diff --git a/CHANGELOG.md b/CHANGELOG.md
index 627cf336..8bfb7798 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ All notable changes to this project will be documented in this file.
 ## Breaking API Changes
 -   The `files` argument of `api.run` is now a `Collection[pathlib.Path]` that represents an exact collection of files to be formatted, instead of a list of paths to search for files. Use `api.get_matching_paths(paths, mode)` to return the set of exact paths expected by `api.run`
 
+## Features
+-   sqlfmt will now display a progress bar for long runs ([#231](https://github.com/tconbeer/sqlfmt/pull/231)). You can disable this with the `--no-progressbar` option
+-   `api.run` now accepts an optional `callback` argument, which must be a `Callable[[Awaitable[SqlFormatResult]], None]`. Unless the `--single-process` option is used, the callback is executed after each file is formatted.
+
 ## Formatting Changes + Bug Fixes
 -   fixed a bug that could cause lines with long jinja tags to be one character over the line length limit, and could result in unstable formatting ([#237](https://github.com/tconbeer/sqlfmt/pull/237) - thank you [@nfcampos](https://github.com/nfcampos)!)
 -   fixed a bug that formatted array literals like they were indexing operations ([#235](https://github.com/tconbeer/sqlfmt/pull/235) - thank you [@nfcampos](https://github.com/nfcampos)!)
diff --git a/poetry.lock b/poetry.lock
index 1f643c78..29030995 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -73,7 +73,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "coverage"
-version = "6.4.2"
+version = "6.4.3"
 description = "Code coverage measurement for Python"
 category = "dev"
 optional = false
@@ -95,15 +95,15 @@ python-versions = "*"
 
 [[package]]
 name = "filelock"
-version = "3.7.1"
+version = "3.8.0"
 description = "A platform independent file lock."
 category = "dev"
 optional = false
 python-versions = ">=3.7"
 
 [package.extras]
-docs = ["furo (>=2021.8.17b43)", "sphinx (>=4.1)", "sphinx-autodoc-typehints (>=1.12)"]
-testing = ["covdefaults (>=1.2.0)", "coverage (>=4)", "pytest (>=4)", "pytest-cov", "pytest-timeout (>=1.4.2)"]
+docs = ["furo (>=2022.6.21)", "sphinx (>=5.1.1)", "sphinx-autodoc-typehints (>=1.19.1)"]
+testing = ["covdefaults (>=2.2)", "coverage (>=6.4.2)", "pytest (>=7.1.2)", "pytest-cov (>=3)", "pytest-timeout (>=2.1)"]
 
 [[package]]
 name = "flake8"
@@ -144,7 +144,7 @@ typing-extensions = {version = ">=3.7.4.3", markers = "python_version < \"3.8\""
 
 [[package]]
 name = "identify"
-version = "2.5.2"
+version = "2.5.3"
 description = "File identification library for Python"
 category = "dev"
 optional = false
@@ -277,8 +277,8 @@ python-versions = ">=3.6"
 importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
 
 [package.extras]
-testing = ["pytest-benchmark", "pytest"]
-dev = ["tox", "pre-commit"]
+dev = ["pre-commit", "tox"]
+testing = ["pytest", "pytest-benchmark"]
 
 [[package]]
 name = "pre-commit"
@@ -307,7 +307,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "pycodestyle"
-version = "2.9.0"
+version = "2.9.1"
 description = "Python style guide checker"
 category = "dev"
 optional = false
@@ -367,7 +367,7 @@ coverage = {version = ">=5.2.1", extras = ["toml"]}
 pytest = ">=4.6"
 
 [package.extras]
-testing = ["virtualenv", "pytest-xdist", "six", "process-tests", "hunter", "fields"]
+testing = ["fields", "hunter", "process-tests", "six", "pytest-xdist", "virtualenv"]
 
 [[package]]
 name = "pyyaml"
@@ -420,6 +420,23 @@ category = "dev"
 optional = true
 python-versions = ">= 3.7"
 
+[[package]]
+name = "tqdm"
+version = "4.64.0"
+description = "Fast, Extensible Progress Meter"
+category = "main"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+
+[package.dependencies]
+colorama = {version = "*", markers = "platform_system == \"Windows\""}
+
+[package.extras]
+dev = ["py-make (>=0.1.0)", "twine", "wheel"]
+notebook = ["ipywidgets (>=6)"]
+slack = ["slack-sdk"]
+telegram = ["requests"]
+
 [[package]]
 name = "typed-ast"
 version = "1.5.4"
@@ -473,41 +490,12 @@ sqlfmt_primer = ["gitpython"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "48f6cf0139488fe94c8f844397b229d14b910d34332a5465d5c0b79efba72730"
+content-hash = "e1d6ff16adfb5a5a915d54fbe72fbcb67d08cd8e9322b7f6f945014d1798a187"
 
 [metadata.files]
-atomicwrites = [
-    {file = "atomicwrites-1.4.1.tar.gz", hash = "sha256:81b2c9071a49367a7f770170e5eec8cb66567cfbbc8c73d20ce5ca4a8d71cf11"},
-]
-attrs = [
-    {file = "attrs-22.1.0-py2.py3-none-any.whl", hash = "sha256:86efa402f67bf2df34f51a335487cf46b1ec130d02b8d39fd248abfd30da551c"},
-    {file = "attrs-22.1.0.tar.gz", hash = "sha256:29adc2665447e5191d0e7c568fde78b21f9672d344281d0c6e1ab085429b22b6"},
-]
-black = [
-    {file = "black-22.6.0-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:f586c26118bc6e714ec58c09df0157fe2d9ee195c764f630eb0d8e7ccce72e69"},
-    {file = "black-22.6.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:b270a168d69edb8b7ed32c193ef10fd27844e5c60852039599f9184460ce0807"},
-    {file = "black-22.6.0-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:6797f58943fceb1c461fb572edbe828d811e719c24e03375fd25170ada53825e"},
-    {file = "black-22.6.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:c85928b9d5f83b23cee7d0efcb310172412fbf7cb9d9ce963bd67fd141781def"},
-    {file = "black-22.6.0-cp310-cp310-win_amd64.whl", hash = "sha256:f6fe02afde060bbeef044af7996f335fbe90b039ccf3f5eb8f16df8b20f77666"},
-    {file = "black-22.6.0-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:cfaf3895a9634e882bf9d2363fed5af8888802d670f58b279b0bece00e9a872d"},
-    {file = "black-22.6.0-cp36-cp36m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:94783f636bca89f11eb5d50437e8e17fbc6a929a628d82304c80fa9cd945f256"},
-    {file = "black-22.6.0-cp36-cp36m-win_amd64.whl", hash = "sha256:2ea29072e954a4d55a2ff58971b83365eba5d3d357352a07a7a4df0d95f51c78"},
-    {file = "black-22.6.0-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:e439798f819d49ba1c0bd9664427a05aab79bfba777a6db94fd4e56fae0cb849"},
-    {file = "black-22.6.0-cp37-cp37m-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:187d96c5e713f441a5829e77120c269b6514418f4513a390b0499b0987f2ff1c"},
-    {file = "black-22.6.0-cp37-cp37m-win_amd64.whl", hash = "sha256:074458dc2f6e0d3dab7928d4417bb6957bb834434516f21514138437accdbe90"},
-    {file = "black-22.6.0-cp38-cp38-macosx_10_9_universal2.whl", hash = "sha256:a218d7e5856f91d20f04e931b6f16d15356db1c846ee55f01bac297a705ca24f"},
-    {file = "black-22.6.0-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:568ac3c465b1c8b34b61cd7a4e349e93f91abf0f9371eda1cf87194663ab684e"},
-    {file = "black-22.6.0-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:6c1734ab264b8f7929cef8ae5f900b85d579e6cbfde09d7387da8f04771b51c6"},
-    {file = "black-22.6.0-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:c9a3ac16efe9ec7d7381ddebcc022119794872abce99475345c5a61aa18c45ad"},
-    {file = "black-22.6.0-cp38-cp38-win_amd64.whl", hash = "sha256:b9fd45787ba8aa3f5e0a0a98920c1012c884622c6c920dbe98dbd05bc7c70fbf"},
-    {file = "black-22.6.0-cp39-cp39-macosx_10_9_universal2.whl", hash = "sha256:7ba9be198ecca5031cd78745780d65a3f75a34b2ff9be5837045dce55db83d1c"},
-    {file = "black-22.6.0-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:a3db5b6409b96d9bd543323b23ef32a1a2b06416d525d27e0f67e74f1446c8f2"},
-    {file = "black-22.6.0-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:560558527e52ce8afba936fcce93a7411ab40c7d5fe8c2463e279e843c0328ee"},
-    {file = "black-22.6.0-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:b154e6bbde1e79ea3260c4b40c0b7b3109ffcdf7bc4ebf8859169a6af72cd70b"},
-    {file = "black-22.6.0-cp39-cp39-win_amd64.whl", hash = "sha256:4af5bc0e1f96be5ae9bd7aaec219c901a94d6caa2484c21983d043371c733fc4"},
-    {file = "black-22.6.0-py3-none-any.whl", hash = "sha256:ac609cf8ef5e7115ddd07d85d988d074ed00e10fbc3445aee393e70164a2219c"},
-    {file = "black-22.6.0.tar.gz", hash = "sha256:6c6d39e28aed379aec40da1c65434c77d75e65bb59a1e1c283de545fb4e7c6c9"},
-]
+atomicwrites = []
+attrs = []
+black = []
 cfgv = [
     {file = "cfgv-3.3.1-py2.py3-none-any.whl", hash = "sha256:c6a0883f3917a037485059700b9e75da2464e6c27051014ad85ba6aaa5884426"},
     {file = "cfgv-3.3.1.tar.gz", hash = "sha256:f5a830efb9ce7a445376bb66ec94c638a9787422f96264c98edc6bdeed8ab736"},
@@ -516,65 +504,11 @@ click = [
     {file = "click-8.1.3-py3-none-any.whl", hash = "sha256:bb4d8133cb15a609f44e8213d9b391b0809795062913b383c62be0ee95b1db48"},
     {file = "click-8.1.3.tar.gz", hash = "sha256:7682dc8afb30297001674575ea00d1814d808d6a36af415a82bd481d37ba7b8e"},
 ]
-colorama = [
-    {file = "colorama-0.4.5-py2.py3-none-any.whl", hash = "sha256:854bf444933e37f5824ae7bfc1e98d5bce2ebe4160d46b5edf346a89358e99da"},
-    {file = "colorama-0.4.5.tar.gz", hash = "sha256:e6c6b4334fc50988a639d9b98aa429a0b57da6e17b9a44f0451f930b6967b7a4"},
-]
-coverage = [
-    {file = "coverage-6.4.2-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:a9032f9b7d38bdf882ac9f66ebde3afb8145f0d4c24b2e600bc4c6304aafb87e"},
-    {file = "coverage-6.4.2-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:e0524adb49c716ca763dbc1d27bedce36b14f33e6b8af6dba56886476b42957c"},
-    {file = "coverage-6.4.2-cp310-cp310-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:d4548be38a1c810d79e097a38107b6bf2ff42151900e47d49635be69943763d8"},
-    {file = "coverage-6.4.2-cp310-cp310-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:f23876b018dfa5d3e98e96f5644b109090f16a4acb22064e0f06933663005d39"},
-    {file = "coverage-6.4.2-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:6fe75dcfcb889b6800f072f2af5a331342d63d0c1b3d2bf0f7b4f6c353e8c9c0"},
-    {file = "coverage-6.4.2-cp310-cp310-musllinux_1_1_aarch64.whl", hash = "sha256:2f8553878a24b00d5ab04b7a92a2af50409247ca5c4b7a2bf4eabe94ed20d3ee"},
-    {file = "coverage-6.4.2-cp310-cp310-musllinux_1_1_i686.whl", hash = "sha256:d774d9e97007b018a651eadc1b3970ed20237395527e22cbeb743d8e73e0563d"},
-    {file = "coverage-6.4.2-cp310-cp310-musllinux_1_1_x86_64.whl", hash = "sha256:d56f105592188ce7a797b2bd94b4a8cb2e36d5d9b0d8a1d2060ff2a71e6b9bbc"},
-    {file = "coverage-6.4.2-cp310-cp310-win32.whl", hash = "sha256:d230d333b0be8042ac34808ad722eabba30036232e7a6fb3e317c49f61c93386"},
-    {file = "coverage-6.4.2-cp310-cp310-win_amd64.whl", hash = "sha256:5ef42e1db047ca42827a85e34abe973971c635f83aed49611b7f3ab49d0130f0"},
-    {file = "coverage-6.4.2-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:25b7ec944f114f70803d6529394b64f8749e93cbfac0fe6c5ea1b7e6c14e8a46"},
-    {file = "coverage-6.4.2-cp37-cp37m-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:7bb00521ab4f99fdce2d5c05a91bddc0280f0afaee0e0a00425e28e209d4af07"},
-    {file = "coverage-6.4.2-cp37-cp37m-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:2dff52b3e7f76ada36f82124703f4953186d9029d00d6287f17c68a75e2e6039"},
-    {file = "coverage-6.4.2-cp37-cp37m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:147605e1702d996279bb3cc3b164f408698850011210d133a2cb96a73a2f7996"},
-    {file = "coverage-6.4.2-cp37-cp37m-musllinux_1_1_aarch64.whl", hash = "sha256:422fa44070b42fef9fb8dabd5af03861708cdd6deb69463adc2130b7bf81332f"},
-    {file = "coverage-6.4.2-cp37-cp37m-musllinux_1_1_i686.whl", hash = "sha256:8af6c26ba8df6338e57bedbf916d76bdae6308e57fc8f14397f03b5da8622b4e"},
-    {file = "coverage-6.4.2-cp37-cp37m-musllinux_1_1_x86_64.whl", hash = "sha256:5336e0352c0b12c7e72727d50ff02557005f79a0b8dcad9219c7c4940a930083"},
-    {file = "coverage-6.4.2-cp37-cp37m-win32.whl", hash = "sha256:0f211df2cba951ffcae210ee00e54921ab42e2b64e0bf2c0befc977377fb09b7"},
-    {file = "coverage-6.4.2-cp37-cp37m-win_amd64.whl", hash = "sha256:a13772c19619118903d65a91f1d5fea84be494d12fd406d06c849b00d31bf120"},
-    {file = "coverage-6.4.2-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:f7bd0ffbcd03dc39490a1f40b2669cc414fae0c4e16b77bb26806a4d0b7d1452"},
-    {file = "coverage-6.4.2-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:0895ea6e6f7f9939166cc835df8fa4599e2d9b759b02d1521b574e13b859ac32"},
-    {file = "coverage-6.4.2-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:d4e7ced84a11c10160c0697a6cc0b214a5d7ab21dfec1cd46e89fbf77cc66fae"},
-    {file = "coverage-6.4.2-cp38-cp38-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:80db4a47a199c4563d4a25919ff29c97c87569130375beca3483b41ad5f698e8"},
-    {file = "coverage-6.4.2-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:3def6791adf580d66f025223078dc84c64696a26f174131059ce8e91452584e1"},
-    {file = "coverage-6.4.2-cp38-cp38-musllinux_1_1_aarch64.whl", hash = "sha256:4f89d8e03c8a3757aae65570d14033e8edf192ee9298303db15955cadcff0c63"},
-    {file = "coverage-6.4.2-cp38-cp38-musllinux_1_1_i686.whl", hash = "sha256:6d0b48aff8e9720bdec315d67723f0babd936a7211dc5df453ddf76f89c59933"},
-    {file = "coverage-6.4.2-cp38-cp38-musllinux_1_1_x86_64.whl", hash = "sha256:2b20286c2b726f94e766e86a3fddb7b7e37af5d0c635bdfa7e4399bc523563de"},
-    {file = "coverage-6.4.2-cp38-cp38-win32.whl", hash = "sha256:d714af0bdba67739598849c9f18efdcc5a0412f4993914a0ec5ce0f1e864d783"},
-    {file = "coverage-6.4.2-cp38-cp38-win_amd64.whl", hash = "sha256:5f65e5d3ff2d895dab76b1faca4586b970a99b5d4b24e9aafffc0ce94a6022d6"},
-    {file = "coverage-6.4.2-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:a697977157adc052284a7160569b36a8bbec09db3c3220642e6323b47cec090f"},
-    {file = "coverage-6.4.2-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:c77943ef768276b61c96a3eb854eba55633c7a3fddf0a79f82805f232326d33f"},
-    {file = "coverage-6.4.2-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:54d8d0e073a7f238f0666d3c7c0d37469b2aa43311e4024c925ee14f5d5a1cbe"},
-    {file = "coverage-6.4.2-cp39-cp39-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:f22325010d8824594820d6ce84fa830838f581a7fd86a9235f0d2ed6deb61e29"},
-    {file = "coverage-6.4.2-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:24b04d305ea172ccb21bee5bacd559383cba2c6fcdef85b7701cf2de4188aa55"},
-    {file = "coverage-6.4.2-cp39-cp39-musllinux_1_1_aarch64.whl", hash = "sha256:866ebf42b4c5dbafd64455b0a1cd5aa7b4837a894809413b930026c91e18090b"},
-    {file = "coverage-6.4.2-cp39-cp39-musllinux_1_1_i686.whl", hash = "sha256:e36750fbbc422c1c46c9d13b937ab437138b998fe74a635ec88989afb57a3978"},
-    {file = "coverage-6.4.2-cp39-cp39-musllinux_1_1_x86_64.whl", hash = "sha256:79419370d6a637cb18553ecb25228893966bd7935a9120fa454e7076f13b627c"},
-    {file = "coverage-6.4.2-cp39-cp39-win32.whl", hash = "sha256:b5e28db9199dd3833cc8a07fa6cf429a01227b5d429facb56eccd765050c26cd"},
-    {file = "coverage-6.4.2-cp39-cp39-win_amd64.whl", hash = "sha256:edfdabe7aa4f97ed2b9dd5dde52d2bb29cb466993bb9d612ddd10d0085a683cf"},
-    {file = "coverage-6.4.2-pp36.pp37.pp38-none-any.whl", hash = "sha256:e2618cb2cf5a7cc8d698306e42ebcacd02fb7ef8cfc18485c59394152c70be97"},
-    {file = "coverage-6.4.2.tar.gz", hash = "sha256:6c3ccfe89c36f3e5b9837b9ee507472310164f352c9fe332120b764c9d60adbe"},
-]
-distlib = [
-    {file = "distlib-0.3.5-py2.py3-none-any.whl", hash = "sha256:b710088c59f06338ca514800ad795a132da19fda270e3ce4affc74abf955a26c"},
-    {file = "distlib-0.3.5.tar.gz", hash = "sha256:a7f75737c70be3b25e2bee06288cec4e4c221de18455b2dd037fe2a795cab2fe"},
-]
-filelock = [
-    {file = "filelock-3.7.1-py3-none-any.whl", hash = "sha256:37def7b658813cda163b56fc564cdc75e86d338246458c4c28ae84cabefa2404"},
-    {file = "filelock-3.7.1.tar.gz", hash = "sha256:3a0fd85166ad9dbab54c9aec96737b744106dc5f15c0b09a6744a445299fcf04"},
-]
-flake8 = [
-    {file = "flake8-5.0.4-py2.py3-none-any.whl", hash = "sha256:7a1cf6b73744f5806ab95e526f6f0d8c01c66d7bbe349562d22dfca20610b248"},
-    {file = "flake8-5.0.4.tar.gz", hash = "sha256:6fbe320aad8d6b95cec8b8e47bc933004678dc63095be98528b7bdd2a9f510db"},
-]
+colorama = []
+coverage = []
+distlib = []
+filelock = []
+flake8 = []
 gitdb = [
     {file = "gitdb-4.0.9-py3-none-any.whl", hash = "sha256:8033ad4e853066ba6ca92050b9df2f89301b8fc8bf7e9324d412a63f8bf1a8fd"},
     {file = "gitdb-4.0.9.tar.gz", hash = "sha256:bac2fd45c0a1c9cf619e63a90d62bdc63892ef92387424b855792a6cabe789aa"},
@@ -583,10 +517,7 @@ gitpython = [
     {file = "GitPython-3.1.27-py3-none-any.whl", hash = "sha256:5b68b000463593e05ff2b261acff0ff0972df8ab1b70d3cdbd41b546c8b8fc3d"},
     {file = "GitPython-3.1.27.tar.gz", hash = "sha256:1c885ce809e8ba2d88a29befeb385fcea06338d3640712b59ca623c220bb5704"},
 ]
-identify = [
-    {file = "identify-2.5.2-py2.py3-none-any.whl", hash = "sha256:feaa9db2dc0ce333b453ce171c0cf1247bbfde2c55fc6bb785022d411a1b78b5"},
-    {file = "identify-2.5.2.tar.gz", hash = "sha256:a3d4c096b384d50d5e6dc5bc8b9bc44f1f61cefebd750a7b3e9f939b53fb214d"},
-]
+identify = []
 importlib-metadata = [
     {file = "importlib_metadata-4.2.0-py3-none-any.whl", hash = "sha256:057e92c15bc8d9e8109738a48db0ccb31b4d9d5cfbee5a8670879a30be66304b"},
     {file = "importlib_metadata-4.2.0.tar.gz", hash = "sha256:b7e52a1f8dec14a75ea73e0891f3060099ca1d8e6a462a4dff11c3e119ea1b31"},
@@ -599,43 +530,13 @@ isort = [
     {file = "isort-5.10.1-py3-none-any.whl", hash = "sha256:6f62d78e2f89b4500b080fe3a81690850cd254227f27f75c3a0c491a1f351ba7"},
     {file = "isort-5.10.1.tar.gz", hash = "sha256:e8443a5e7a020e9d7f97f1d7d9cd17c88bcb3bc7e218bf9cf5095fe550be2951"},
 ]
-mccabe = [
-    {file = "mccabe-0.7.0-py2.py3-none-any.whl", hash = "sha256:6c2d30ab6be0e4a46919781807b4f0d834ebdd6c6e3dca0bda5a15f863427b6e"},
-    {file = "mccabe-0.7.0.tar.gz", hash = "sha256:348e0240c33b60bbdf4e523192ef919f28cb2c3d7d5c7794f74009290f236325"},
-]
-mypy = [
-    {file = "mypy-0.971-cp310-cp310-macosx_10_9_universal2.whl", hash = "sha256:f2899a3cbd394da157194f913a931edfd4be5f274a88041c9dc2d9cdcb1c315c"},
-    {file = "mypy-0.971-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:98e02d56ebe93981c41211c05adb630d1d26c14195d04d95e49cd97dbc046dc5"},
-    {file = "mypy-0.971-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:19830b7dba7d5356d3e26e2427a2ec91c994cd92d983142cbd025ebe81d69cf3"},
-    {file = "mypy-0.971-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:02ef476f6dcb86e6f502ae39a16b93285fef97e7f1ff22932b657d1ef1f28655"},
-    {file = "mypy-0.971-cp310-cp310-win_amd64.whl", hash = "sha256:25c5750ba5609a0c7550b73a33deb314ecfb559c350bb050b655505e8aed4103"},
-    {file = "mypy-0.971-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:d3348e7eb2eea2472db611486846742d5d52d1290576de99d59edeb7cd4a42ca"},
-    {file = "mypy-0.971-cp36-cp36m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:3fa7a477b9900be9b7dd4bab30a12759e5abe9586574ceb944bc29cddf8f0417"},
-    {file = "mypy-0.971-cp36-cp36m-win_amd64.whl", hash = "sha256:2ad53cf9c3adc43cf3bea0a7d01a2f2e86db9fe7596dfecb4496a5dda63cbb09"},
-    {file = "mypy-0.971-cp37-cp37m-macosx_10_9_x86_64.whl", hash = "sha256:855048b6feb6dfe09d3353466004490b1872887150c5bb5caad7838b57328cc8"},
-    {file = "mypy-0.971-cp37-cp37m-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:23488a14a83bca6e54402c2e6435467a4138785df93ec85aeff64c6170077fb0"},
-    {file = "mypy-0.971-cp37-cp37m-win_amd64.whl", hash = "sha256:4b21e5b1a70dfb972490035128f305c39bc4bc253f34e96a4adf9127cf943eb2"},
-    {file = "mypy-0.971-cp38-cp38-macosx_10_9_universal2.whl", hash = "sha256:9796a2ba7b4b538649caa5cecd398d873f4022ed2333ffde58eaf604c4d2cb27"},
-    {file = "mypy-0.971-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:5a361d92635ad4ada1b1b2d3630fc2f53f2127d51cf2def9db83cba32e47c856"},
-    {file = "mypy-0.971-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:b793b899f7cf563b1e7044a5c97361196b938e92f0a4343a5d27966a53d2ec71"},
-    {file = "mypy-0.971-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:d1ea5d12c8e2d266b5fb8c7a5d2e9c0219fedfeb493b7ed60cd350322384ac27"},
-    {file = "mypy-0.971-cp38-cp38-win_amd64.whl", hash = "sha256:23c7ff43fff4b0df93a186581885c8512bc50fc4d4910e0f838e35d6bb6b5e58"},
-    {file = "mypy-0.971-cp39-cp39-macosx_10_9_universal2.whl", hash = "sha256:1f7656b69974a6933e987ee8ffb951d836272d6c0f81d727f1d0e2696074d9e6"},
-    {file = "mypy-0.971-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:d2022bfadb7a5c2ef410d6a7c9763188afdb7f3533f22a0a32be10d571ee4bbe"},
-    {file = "mypy-0.971-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:ef943c72a786b0f8d90fd76e9b39ce81fb7171172daf84bf43eaf937e9f220a9"},
-    {file = "mypy-0.971-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl", hash = "sha256:d744f72eb39f69312bc6c2abf8ff6656973120e2eb3f3ec4f758ed47e414a4bf"},
-    {file = "mypy-0.971-cp39-cp39-win_amd64.whl", hash = "sha256:77a514ea15d3007d33a9e2157b0ba9c267496acf12a7f2b9b9f8446337aac5b0"},
-    {file = "mypy-0.971-py3-none-any.whl", hash = "sha256:0d054ef16b071149917085f51f89555a576e2618d5d9dd70bd6eea6410af3ac9"},
-    {file = "mypy-0.971.tar.gz", hash = "sha256:40b0f21484238269ae6a57200c807d80debc6459d444c0489a102d7c6a75fa56"},
-]
+mccabe = []
+mypy = []
 mypy-extensions = [
     {file = "mypy_extensions-0.4.3-py2.py3-none-any.whl", hash = "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d"},
     {file = "mypy_extensions-0.4.3.tar.gz", hash = "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"},
 ]
-nodeenv = [
-    {file = "nodeenv-1.7.0-py2.py3-none-any.whl", hash = "sha256:27083a7b96a25f2f5e1d8cb4b6317ee8aeda3bdd121394e5ac54e498028a042e"},
-    {file = "nodeenv-1.7.0.tar.gz", hash = "sha256:e0e7f7dfb85fc5394c6fe1e8fa98131a2473e04311a45afb6508f7cf1836fa2b"},
-]
+nodeenv = []
 packaging = [
     {file = "packaging-21.3-py3-none-any.whl", hash = "sha256:ef103e05f519cdc783ae24ea4e2e0f508a9c99b2d4969652eed6a2e1ea5bd522"},
     {file = "packaging-21.3.tar.gz", hash = "sha256:dd47c42927d89ab911e606518907cc2d3a1f38bbd026385970643f9c5b8ecfeb"},
@@ -652,22 +553,13 @@ pluggy = [
     {file = "pluggy-1.0.0-py2.py3-none-any.whl", hash = "sha256:74134bbf457f031a36d68416e1509f34bd5ccc019f0bcc952c7b909d06b37bd3"},
     {file = "pluggy-1.0.0.tar.gz", hash = "sha256:4224373bacce55f955a878bf9cfa763c1e360858e330072059e10bad68531159"},
 ]
-pre-commit = [
-    {file = "pre_commit-2.20.0-py2.py3-none-any.whl", hash = "sha256:51a5ba7c480ae8072ecdb6933df22d2f812dc897d5fe848778116129a681aac7"},
-    {file = "pre_commit-2.20.0.tar.gz", hash = "sha256:a978dac7bc9ec0bcee55c18a277d553b0f419d259dadb4b9418ff2d00eb43959"},
-]
+pre-commit = []
 py = [
     {file = "py-1.11.0-py2.py3-none-any.whl", hash = "sha256:607c53218732647dff4acdfcd50cb62615cedf612e72d1724fb1a0cc6405b378"},
     {file = "py-1.11.0.tar.gz", hash = "sha256:51c75c4126074b472f746a24399ad32f6053d1b34b68d2fa41e558e6f4a98719"},
 ]
-pycodestyle = [
-    {file = "pycodestyle-2.9.0-py2.py3-none-any.whl", hash = "sha256:289cdc0969d589d90752582bef6dff57c5fbc6949ee8b013ad6d6449a8ae9437"},
-    {file = "pycodestyle-2.9.0.tar.gz", hash = "sha256:beaba44501f89d785be791c9462553f06958a221d166c64e1f107320f839acc2"},
-]
-pyflakes = [
-    {file = "pyflakes-2.5.0-py2.py3-none-any.whl", hash = "sha256:4579f67d887f804e67edb544428f264b7b24f435b263c4614f384135cea553d2"},
-    {file = "pyflakes-2.5.0.tar.gz", hash = "sha256:491feb020dca48ccc562a8c0cbe8df07ee13078df59813b83959cbdada312ea3"},
-]
+pycodestyle = []
+pyflakes = []
 pyparsing = [
     {file = "pyparsing-3.0.9-py3-none-any.whl", hash = "sha256:5026bae9a10eeaefb61dab2f09052b9f4307d44aee4eda64b309723d8d206bbc"},
     {file = "pyparsing-3.0.9.tar.gz", hash = "sha256:2b020ecf7d21b687f219b71ecad3631f644a47f01403fa1d1036b0c6416d70fb"},
@@ -731,19 +623,8 @@ tomli = [
     {file = "tomli-2.0.1-py3-none-any.whl", hash = "sha256:939de3e7a6161af0c887ef91b7d41a53e7c5a1ca976325f429cb46ea9bc30ecc"},
     {file = "tomli-2.0.1.tar.gz", hash = "sha256:de526c12914f0c550d15924c62d72abc48d6fe7364aa87328337a31007fe8a4f"},
 ]
-tornado = [
-    {file = "tornado-6.2-cp37-abi3-macosx_10_9_universal2.whl", hash = "sha256:20f638fd8cc85f3cbae3c732326e96addff0a15e22d80f049e00121651e82e72"},
-    {file = "tornado-6.2-cp37-abi3-macosx_10_9_x86_64.whl", hash = "sha256:87dcafae3e884462f90c90ecc200defe5e580a7fbbb4365eda7c7c1eb809ebc9"},
-    {file = "tornado-6.2-cp37-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:ba09ef14ca9893954244fd872798b4ccb2367c165946ce2dd7376aebdde8e3ac"},
-    {file = "tornado-6.2-cp37-abi3-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:b8150f721c101abdef99073bf66d3903e292d851bee51910839831caba341a75"},
-    {file = "tornado-6.2-cp37-abi3-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:d3a2f5999215a3a06a4fc218026cd84c61b8b2b40ac5296a6db1f1451ef04c1e"},
-    {file = "tornado-6.2-cp37-abi3-musllinux_1_1_aarch64.whl", hash = "sha256:5f8c52d219d4995388119af7ccaa0bcec289535747620116a58d830e7c25d8a8"},
-    {file = "tornado-6.2-cp37-abi3-musllinux_1_1_i686.whl", hash = "sha256:6fdfabffd8dfcb6cf887428849d30cf19a3ea34c2c248461e1f7d718ad30b66b"},
-    {file = "tornado-6.2-cp37-abi3-musllinux_1_1_x86_64.whl", hash = "sha256:1d54d13ab8414ed44de07efecb97d4ef7c39f7438cf5e976ccd356bebb1b5fca"},
-    {file = "tornado-6.2-cp37-abi3-win32.whl", hash = "sha256:5c87076709343557ef8032934ce5f637dbb552efa7b21d08e89ae7619ed0eb23"},
-    {file = "tornado-6.2-cp37-abi3-win_amd64.whl", hash = "sha256:e5f923aa6a47e133d1cf87d60700889d7eae68988704e20c75fb2d65677a8e4b"},
-    {file = "tornado-6.2.tar.gz", hash = "sha256:9b630419bde84ec666bfd7ea0a4cb2a8a651c2d5cccdbdd1972a0c859dfc3c13"},
-]
+tornado = []
+tqdm = []
 typed-ast = [
     {file = "typed_ast-1.5.4-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:669dd0c4167f6f2cd9f57041e03c3c2ebf9063d0757dc89f79ba1daa2bfca9d4"},
     {file = "typed_ast-1.5.4-cp310-cp310-macosx_11_0_arm64.whl", hash = "sha256:211260621ab1cd7324e0798d6be953d00b74e0428382991adfddb352252f1d62"},
@@ -770,15 +651,6 @@ typed-ast = [
     {file = "typed_ast-1.5.4-cp39-cp39-win_amd64.whl", hash = "sha256:0fdbcf2fef0ca421a3f5912555804296f0b0960f0418c440f5d6d3abb549f3e1"},
     {file = "typed_ast-1.5.4.tar.gz", hash = "sha256:39e21ceb7388e4bb37f4c679d72707ed46c2fbf2a5609b8b8ebc4b067d977df2"},
 ]
-typing-extensions = [
-    {file = "typing_extensions-4.3.0-py3-none-any.whl", hash = "sha256:25642c956049920a5aa49edcdd6ab1e06d7e5d467fc00e0506c44ac86fbfca02"},
-    {file = "typing_extensions-4.3.0.tar.gz", hash = "sha256:e6d2677a32f47fc7eb2795db1dd15c1f34eff616bcaf2cfb5e997f854fa1c4a6"},
-]
-virtualenv = [
-    {file = "virtualenv-20.16.2-py2.py3-none-any.whl", hash = "sha256:635b272a8e2f77cb051946f46c60a54ace3cb5e25568228bd6b57fc70eca9ff3"},
-    {file = "virtualenv-20.16.2.tar.gz", hash = "sha256:0ef5be6d07181946891f5abc8047fda8bc2f0b4b9bf222c64e6e8963baee76db"},
-]
-zipp = [
-    {file = "zipp-3.8.1-py3-none-any.whl", hash = "sha256:47c40d7fe183a6f21403a199b3e4192cca5774656965b0a4988ad2f8feb5f009"},
-    {file = "zipp-3.8.1.tar.gz", hash = "sha256:05b45f1ee8f807d0cc928485ca40a07cb491cf092ff587c0df9cb1fd154848d2"},
-]
+typing-extensions = []
+virtualenv = []
+zipp = []
diff --git a/pyproject.toml b/pyproject.toml
index e1c7f97d..6e5993e5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,6 +32,7 @@ jinjafmt = ["black"]
 [tool.poetry.dependencies]
 python = "^3.7"
 click = "^8.0"
+tqdm = "^4.0"
 platformdirs = "^2.4.0"
 importlib_metadata = { version = "*", python = "<3.8" }
 gitpython = { version = "^3.1.24", optional = true }
diff --git a/src/sqlfmt/api.py b/src/sqlfmt/api.py
index 0434c4dd..ca1a910b 100755
--- a/src/sqlfmt/api.py
+++ b/src/sqlfmt/api.py
@@ -4,7 +4,19 @@
 from functools import partial
 from glob import glob
 from pathlib import Path
-from typing import Callable, Collection, Iterable, List, Set, TypeVar
+from typing import (
+    Awaitable,
+    Callable,
+    Collection,
+    Iterable,
+    List,
+    Optional,
+    Set,
+    Tuple,
+    TypeVar,
+)
+
+from tqdm import tqdm
 
 from sqlfmt.cache import Cache, check_cache, clear_cache, load_cache, write_cache
 from sqlfmt.exception import SqlfmtError
@@ -28,7 +40,11 @@ def format_string(source_string: str, mode: Mode) -> str:
     return str(formatted_query)
 
 
-def run(files: Collection[Path], mode: Mode) -> Report:
+def run(
+    files: Collection[Path],
+    mode: Mode,
+    callback: Optional[Callable[[Awaitable[SqlFormatResult]], None]] = None,
+) -> Report:
     """
     Runs sqlfmt on all files in list of given paths (files), using the specified mode.
 
@@ -44,7 +60,7 @@ def run(files: Collection[Path], mode: Mode) -> Report:
     else:
         cache = load_cache()
 
-    results = _format_many(files, cache, mode)
+    results = _format_many(files, cache, mode, callback=callback)
 
     report = Report(results, mode)
 
@@ -74,6 +90,33 @@ def get_matching_paths(paths: Iterable[Path], mode: Mode) -> Set[Path]:
     return include_set - exclude_set
 
 
+def initialize_progress_bar(
+    total: int, mode: Mode, force_progress_bar: bool = False
+) -> Tuple[tqdm, Callable[[Awaitable[SqlFormatResult]], None]]:
+    """
+    Return a callable that can be used with api.run to display a progress bar
+    that updates after each file is formatted.
+
+    Pass force_progress_bar to enable the progress bar, even on non-TTY
+    terminals (this is handy for testing the progress bar).
+    """
+    if mode.no_progressbar:
+        disable = True
+    elif force_progress_bar:
+        disable = False
+    else:
+        # will be disabled on non-TTY envs, enabled otherwise
+        disable = None
+    progress_bar = tqdm(
+        iterable=None, total=total, leave=False, disable=disable, delay=0.5, unit="file"
+    )
+
+    def progress_callback(_: Awaitable[SqlFormatResult]) -> None:
+        progress_bar.update()
+
+    return progress_bar, progress_callback
+
+
 def _get_included_paths(paths: Iterable[Path], mode: Mode) -> Set[Path]:
     """
     Takes a list of paths (files or directories) and a mode as an input, and
@@ -93,7 +136,10 @@ def _get_included_paths(paths: Iterable[Path], mode: Mode) -> Set[Path]:
 
 
 def _format_many(
-    paths: Collection[Path], cache: Cache, mode: Mode
+    paths: Collection[Path],
+    cache: Cache,
+    mode: Mode,
+    callback: Optional[Callable[[Awaitable[SqlFormatResult]], None]] = None,
 ) -> List[SqlFormatResult]:
     """
     Runs sqlfmt on all files in a collection of paths, using the specified mode.
@@ -106,7 +152,7 @@ def _format_many(
     format_func = partial(_format_one, cache=cache, mode=mode)
     if len(paths) > 1 and not mode.single_process:
         results: List[SqlFormatResult] = asyncio.get_event_loop().run_until_complete(
-            _multiprocess_map(format_func, paths)
+            _multiprocess_map(format_func, paths, callback=callback)
         )
     else:
         results = list(map(format_func, paths))
@@ -114,7 +160,11 @@ def _format_many(
     return results
 
 
-async def _multiprocess_map(func: Callable[[T], R], seq: Iterable[T]) -> List[R]:
+async def _multiprocess_map(
+    func: Callable[[T], R],
+    seq: Iterable[T],
+    callback: Optional[Callable[[Awaitable[R]], None]] = None,
+) -> List[R]:
     """
     Using multiple processes, creates a Future for each application of func to
     an item in seq, then gathers all Futures and returns the result.
@@ -126,7 +176,10 @@ async def _multiprocess_map(func: Callable[[T], R], seq: Iterable[T]) -> List[R]
     with concurrent.futures.ProcessPoolExecutor() as pool:
         tasks = []
         for item in seq:
-            tasks.append(loop.run_in_executor(pool, func, item))
+            future = loop.run_in_executor(pool, func, item)
+            if callback:
+                future.add_done_callback(callback)
+            tasks.append(future)
         results: List[R] = await asyncio.gather(*tasks)
     return results
 
diff --git a/src/sqlfmt/cli.py b/src/sqlfmt/cli.py
index 7d08961a..5f28f3a2 100755
--- a/src/sqlfmt/cli.py
+++ b/src/sqlfmt/cli.py
@@ -82,6 +82,11 @@
     is_flag=True,
     help=("Prints much less information to stderr"),
 )
+@click.option(
+    "--no-progressbar",
+    is_flag=True,
+    help=("Never prints a progressbar to stderr"),
+)
 @click.option(
     "--no-color",
     is_flag=True,
@@ -140,7 +145,13 @@ def sqlfmt(
         mode = Mode(**config)  # type: ignore
 
         matched_files = api.get_matching_paths(files, mode=mode)
-        report = api.run(files=matched_files, mode=mode)
+        progress_bar, progress_callback = api.initialize_progress_bar(
+            total=len(matched_files), mode=mode
+        )
+
+        report = api.run(files=matched_files, mode=mode, callback=progress_callback)
+
+        progress_bar.close()
         report.display_report()
 
         if report.number_errored > 0:
diff --git a/src/sqlfmt/mode.py b/src/sqlfmt/mode.py
index 1b9007f9..14797a9c 100644
--- a/src/sqlfmt/mode.py
+++ b/src/sqlfmt/mode.py
@@ -24,6 +24,7 @@ class Mode:
     reset_cache: bool = False
     verbose: bool = False
     quiet: bool = False
+    no_progressbar: bool = False
     no_color: bool = False
     force_color: bool = False
 
diff --git a/src/sqlfmt_primer/primer.py b/src/sqlfmt_primer/primer.py
index e0f4cc33..4827ea93 100644
--- a/src/sqlfmt_primer/primer.py
+++ b/src/sqlfmt_primer/primer.py
@@ -9,7 +9,7 @@
 from git import Repo
 from platformdirs import user_cache_dir
 
-from sqlfmt.api import run
+from sqlfmt.api import get_matching_paths, initialize_progress_bar, run
 from sqlfmt.cache import get_cache_file
 from sqlfmt.mode import Mode
 
@@ -148,9 +148,18 @@ def sqlfmt_primer(
             target_dir = get_project_source_tree(project, reset_cache, working_dir)
 
             click.echo(f"Running sqlfmt on {project.name}", err=True)
+
+            files = get_matching_paths([target_dir], mode=mode)
+            progress_bar, progress_callback = initialize_progress_bar(
+                total=len(files), mode=mode
+            )
+
             start_time = timeit.default_timer()
-            report = run(files=[target_dir], mode=mode)
+            report = run(files=files, mode=mode, callback=progress_callback)
             end_time = timeit.default_timer()
+
+            progress_bar.close()
+
             number_formatted = (
                 report.number_changed + report.number_unchanged + report.number_errored
             )
diff --git a/tests/conftest.py b/tests/conftest.py
index 1ccac805..000c0e95 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,5 +1,6 @@
 import os
 import sys
+from itertools import product
 from pathlib import Path
 from typing import Any
 
@@ -76,26 +77,23 @@ def reset_cache_mode(unset_no_color_env: None) -> Mode:
     return Mode(reset_cache=True)
 
 
+@pytest.fixture
+def no_progressbar_mode(unset_no_color_env: None) -> Mode:
+    return Mode(no_progressbar=True)
+
+
 @pytest.fixture
 def single_process_mode(unset_no_color_env: None) -> Mode:
     return Mode(single_process=True)
 
 
-@pytest.fixture(
-    params=[
-        # (check, diff, single_process)
-        (False, False, False),
-        (False, True, False),
-        (True, False, False),
-        (True, True, False),
-        (False, False, True),
-        (True, False, True),
-        (False, True, True),
-    ]
-)
+@pytest.fixture(params=product([True, False], repeat=4))
 def all_output_modes(request: Any, unset_no_color_env: None) -> Mode:
     return Mode(
-        check=request.param[0], diff=request.param[1], single_process=request.param[2]
+        check=request.param[0],
+        diff=request.param[1],
+        single_process=request.param[2],
+        no_progressbar=request.param[3],
     )
 
 
diff --git a/tests/unit_tests/test_api.py b/tests/unit_tests/test_api.py
index 6f9b5795..155ef582 100644
--- a/tests/unit_tests/test_api.py
+++ b/tests/unit_tests/test_api.py
@@ -1,15 +1,17 @@
 import io
 import os
 from pathlib import Path
-from typing import List, Type
+from typing import Any, List, Type
 
 import pytest
+from tqdm import tqdm
 
 from sqlfmt.api import (
     _format_many,
     _update_source_files,
     format_string,
     get_matching_paths,
+    initialize_progress_bar,
     run,
 )
 from sqlfmt.exception import SqlfmtBracketError, SqlfmtError
@@ -26,9 +28,9 @@ def unformatted_files(unformatted_dir: Path) -> List[Path]:
     return list(unformatted_dir.iterdir())
 
 
-def test_file_discovery(all_output_modes: Mode) -> None:
+def test_file_discovery(default_mode: Mode) -> None:
     p = Path("tests/data/unit_tests/test_api/test_file_discovery")
-    res = list(get_matching_paths(p.iterdir(), all_output_modes))
+    res = list(get_matching_paths(p.iterdir(), default_mode))
 
     expected = (
         p / "top_level_file.sql",
@@ -100,9 +102,9 @@ def test_format_many_preformatted(
 
 
 def test_format_many_unformatted(
-    unformatted_files: List[Path], all_output_modes: Mode
+    unformatted_files: List[Path], default_mode: Mode
 ) -> None:
-    results = list(_format_many(unformatted_files, {}, all_output_modes))
+    results = list(_format_many(unformatted_files, {}, default_mode))
 
     assert len(results) == len(
         unformatted_files
@@ -269,3 +271,52 @@ def test_run_single_process_does_not_use_multiprocessing(
     files = get_matching_paths([unformatted_dir], single_process_mode)
     monkeypatch.delattr("sqlfmt.api._multiprocess_map")
     _ = run(files=files, mode=single_process_mode)
+
+
+def test_run_with_callback(
+    capsys: Any, unformatted_dir: Path, default_mode: Mode
+) -> None:
+    def print_dot(_: Any) -> None:
+        print(".", end="", flush=True)
+
+    files = get_matching_paths([unformatted_dir], default_mode)
+    expected_dots = len(files)
+
+    _ = run(files=files, mode=default_mode, callback=print_dot)
+    captured = capsys.readouterr()
+
+    assert "." * expected_dots in captured.out
+
+
+def test_initialize_progress_bar(default_mode: Mode) -> None:
+    total = 100
+    progress_bar, progress_callback = initialize_progress_bar(
+        total=total, mode=default_mode, force_progress_bar=True
+    )
+    assert progress_bar
+    assert isinstance(progress_bar, tqdm)
+    assert progress_bar.format_dict.get("n") == 0
+    assert progress_bar.format_dict.get("total") == total
+    assert progress_bar.format_dict.get("elapsed") > 0
+
+    assert progress_callback
+    progress_callback("foo")  # type: ignore
+    assert progress_bar.format_dict.get("n") == 1
+
+
+def test_initialize_disabled_progress_bar(no_progressbar_mode: Mode) -> None:
+    total = 100
+    progress_bar, progress_callback = initialize_progress_bar(
+        total=total, mode=no_progressbar_mode, force_progress_bar=True
+    )
+    # a disabled progress bar's elapsed timer will not count up,
+    # and calling update() will not increment n
+    assert progress_bar
+    assert isinstance(progress_bar, tqdm)
+    assert progress_bar.format_dict.get("n") == 0
+    assert progress_bar.format_dict.get("total") == total
+    assert progress_bar.format_dict.get("elapsed") == 0
+
+    assert progress_callback
+    progress_callback("foo")  # type: ignore
+    assert progress_bar.format_dict.get("n") == 0
diff --git a/tests/unit_tests/test_cli.py b/tests/unit_tests/test_cli.py
index a94dab08..6d6b23df 100755
--- a/tests/unit_tests/test_cli.py
+++ b/tests/unit_tests/test_cli.py
@@ -121,3 +121,11 @@ def test_preformatted_clickhouse(
     args = f"{preformatted_dir.as_posix()} --check --dialect clickhouse"
     results = sqlfmt_runner.invoke(sqlfmt_main, args=args)
     assert results.exit_code == 0
+
+
+def test_preformatted_no_progressbar(
+    sqlfmt_runner: CliRunner, preformatted_dir: Path
+) -> None:
+    args = f"{preformatted_dir.as_posix()} --check --no-progressbar"
+    results = sqlfmt_runner.invoke(sqlfmt_main, args=args)
+    assert results.exit_code == 0