diff --git a/Cargo.lock b/Cargo.lock
index f5243dd9..2631d024 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -102,12 +102,6 @@ version = "1.0.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c1fd03a028ef38ba2276dce7e33fcd6369c158a1bca17946c4b1b701891c1ff7"
 
-[[package]]
-name = "arc-swap"
-version = "1.7.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "69f7f8c3906b62b754cd5326047894316021dcfe5a194c8ea52bdd94934a3457"
-
 [[package]]
 name = "arrayvec"
 version = "0.7.6"
@@ -170,18 +164,6 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
-[[package]]
-name = "base62"
-version = "2.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48fa474cf7492f9a299ba6019fb99ec673e1739556d48e8a90eabaea282ef0e4"
-
-[[package]]
-name = "bitflags"
-version = "1.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
-
 [[package]]
 name = "bitflags"
 version = "2.6.0"
@@ -201,16 +183,6 @@ dependencies = [
  "piper",
 ]
 
-[[package]]
-name = "bstr"
-version = "1.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a68f1f47cdf0ec8ee4b941b2eee2a80cb796db73118c0dd09ac63fbe405be22"
-dependencies = [
- "memchr",
- "serde",
-]
-
 [[package]]
 name = "bumpalo"
 version = "3.16.0"
@@ -487,7 +459,7 @@ version = "0.28.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "829d955a0bb380ef178a640b91779e3987da38c9aea133b20614cfed8cdea9c6"
 dependencies = [
- "bitflags 2.6.0",
+ "bitflags",
  "crossterm_winapi",
  "mio",
  "parking_lot",
@@ -868,36 +840,6 @@ version = "0.31.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "07e28edb80900c19c28f1072f2e8aeca7fa06b23cd4169cefe1af5aa3260783f"
 
-[[package]]
-name = "glob"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
-
-[[package]]
-name = "globset"
-version = "0.4.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15f1ce686646e7f1e19bf7d5533fe443a45dbfb990e00629110797578b42fb19"
-dependencies = [
- "aho-corasick",
- "bstr",
- "log",
- "regex-automata 0.4.9",
- "regex-syntax 0.8.5",
-]
-
-[[package]]
-name = "globwalk"
-version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93e3af942408868f6934a7b85134a3230832b9977cf66125df2f9edcfce4ddcc"
-dependencies = [
- "bitflags 1.3.2",
- "ignore",
- "walkdir",
-]
-
 [[package]]
 name = "hashbrown"
 version = "0.15.2"
@@ -1168,22 +1110,6 @@ dependencies = [
  "icu_properties",
 ]
 
-[[package]]
-name = "ignore"
-version = "0.4.23"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d89fd380afde86567dfba715db065673989d6253f42b88179abd3eae47bda4b"
-dependencies = [
- "crossbeam-deque",
- "globset",
- "log",
- "memchr",
- "regex-automata 0.4.9",
- "same-file",
- "walkdir",
- "winapi-util",
-]
-
 [[package]]
 name = "indexmap"
 version = "2.7.0"
@@ -1260,15 +1186,6 @@ version = "1.70.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf"
 
-[[package]]
-name = "itertools"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1c173a5686ce8bfa551b3563d0c2170bf24ca44da99c7ca4bfdab5418c3fe57"
-dependencies = [
- "either",
-]
-
 [[package]]
 name = "itertools"
 version = "0.13.0"
@@ -1316,12 +1233,6 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
-[[package]]
-name = "libyml"
-version = "0.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64804cc6a5042d4f05379909ba25b503ec04e2c082151d62122d5dcaa274b961"
-
 [[package]]
 name = "linked-hash-map"
 version = "0.5.6"
@@ -1469,22 +1380,13 @@ version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "71e2746dc3a24dd78b3cfcb7be93368c6de9963d30f43a6a73998a9cf4b17b46"
 dependencies = [
- "bitflags 2.6.0",
+ "bitflags",
  "cfg-if",
  "cfg_aliases",
  "libc",
  "memoffset",
 ]
 
-[[package]]
-name = "normpath"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c8911957c4b1549ac0dc74e30db9c8b0e66ddcd6d7acc33098f4c63a64a6d7ed"
-dependencies = [
- "windows-sys 0.59.0",
-]
-
 [[package]]
 name = "nu-ansi-term"
 version = "0.46.0"
@@ -1576,6 +1478,44 @@ dependencies = [
  "indexmap",
 ]
 
+[[package]]
+name = "phf"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ade2d8b8f33c7333b51bcf0428d37e217e9f32192ae4772156f65063b8ce03dc"
+dependencies = [
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_codegen"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8d39688d359e6b34654d328e262234662d16cc0f60ec8dcbe5e718709342a5a"
+dependencies = [
+ "phf_generator",
+ "phf_shared",
+]
+
+[[package]]
+name = "phf_generator"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48e4cc64c2ad9ebe670cb8fd69dd50ae301650392e81c05f9bfcb2d5bdbc24b0"
+dependencies = [
+ "phf_shared",
+ "rand",
+]
+
+[[package]]
+name = "phf_shared"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90fcb95eef784c2ac79119d1dd819e162b5da872ce6f3c3abe1e8ca1c082f72b"
+dependencies = [
+ "siphasher",
+]
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.15"
@@ -1704,13 +1644,13 @@ version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eabd94c2f37801c20583fc49dd5cd6b0ba68c716787c2dd6ed18571e1e63117b"
 dependencies = [
- "bitflags 2.6.0",
+ "bitflags",
  "cassowary",
  "compact_str",
  "crossterm",
  "indoc",
  "instability",
- "itertools 0.13.0",
+ "itertools",
  "lru",
  "paste",
  "strum",
@@ -1725,7 +1665,7 @@ version = "0.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b6dfecf2c74bce2466cabf93f6664d6998a69eb21e39f4207930065b27b771f"
 dependencies = [
- "bitflags 2.6.0",
+ "bitflags",
 ]
 
 [[package]]
@@ -1788,60 +1728,6 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "88f8660c1ff60292143c98d08fc6e2f654d722db50410e3f3797d40baaf9d8f3"
 
-[[package]]
-name = "rust-i18n"
-version = "3.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "039f57d22229db401af3458ca939300178e99e88b938573cea12b7c2b0f09724"
-dependencies = [
- "globwalk",
- "once_cell",
- "regex",
- "rust-i18n-macro",
- "rust-i18n-support",
- "smallvec",
-]
-
-[[package]]
-name = "rust-i18n-macro"
-version = "3.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dde5c022360a2e54477882843d56b6f9bcb4bc62f504b651a2f497f0028d174f"
-dependencies = [
- "glob",
- "once_cell",
- "proc-macro2",
- "quote",
- "rust-i18n-support",
- "serde",
- "serde_json",
- "serde_yml",
- "syn 2.0.90",
-]
-
-[[package]]
-name = "rust-i18n-support"
-version = "3.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75d2844d36f62b5d6b66f9cf8f8cbdbbbdcdb5fd37a473a9cc2fb45fdcf485d2"
-dependencies = [
- "arc-swap",
- "base62",
- "globwalk",
- "itertools 0.11.0",
- "lazy_static",
- "normpath",
- "once_cell",
- "proc-macro2",
- "regex",
- "serde",
- "serde_json",
- "serde_yml",
- "siphasher",
- "toml 0.7.8",
- "triomphe",
-]
-
 [[package]]
 name = "rustc-demangle"
 version = "0.1.24"
@@ -1854,7 +1740,7 @@ version = "0.38.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f93dc38ecbab2eb790ff964bb77fa94faf256fd3e73285fd7ba0903b76bedb85"
 dependencies = [
- "bitflags 2.6.0",
+ "bitflags",
  "errno",
  "libc",
  "linux-raw-sys",
@@ -1873,15 +1759,6 @@ version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f3cb5ba0dc43242ce17de99c180e96db90b235b8a9fdc9543c96d2209116bd9f"
 
-[[package]]
-name = "same-file"
-version = "1.0.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
-dependencies = [
- "winapi-util",
-]
-
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
@@ -1952,23 +1829,6 @@ dependencies = [
  "syn 2.0.90",
 ]
 
-[[package]]
-name = "serde_yml"
-version = "0.0.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48e76bab63c3fd98d27c17f9cbce177f64a91f5e69ac04cafe04e1bb25d1dc3c"
-dependencies = [
- "indexmap",
- "itoa",
- "libyml",
- "log",
- "memchr",
- "ryu",
- "serde",
- "serde_json",
- "tempfile",
-]
-
 [[package]]
 name = "sharded-slab"
 version = "0.1.7"
@@ -2022,9 +1882,9 @@ checksum = "1de1d4f81173b03af4c0cbed3c898f6bff5b870e4a7f5d6f4057d62a7a4b686e"
 
 [[package]]
 name = "siphasher"
-version = "1.0.1"
+version = "0.3.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "56199f7ddabf13fe5074ce809e7d3f42b42ae711800501b5b16ea82ad029c39d"
+checksum = "38b58827f4464d87d377d175e90bf58eb00fd8716ff0a62f80356b5e61555d0d"
 
 [[package]]
 name = "slab"
@@ -2133,19 +1993,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "tempfile"
-version = "3.14.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28cce251fcbc87fac86a866eeb0d6c2d536fc16d06f184bb61aeae11aa4cee0c"
-dependencies = [
- "cfg-if",
- "fastrand",
- "once_cell",
- "rustix",
- "windows-sys 0.59.0",
-]
-
 [[package]]
 name = "terminal_size"
 version = "0.4.1"
@@ -2312,18 +2159,6 @@ dependencies = [
  "tokio",
 ]
 
-[[package]]
-name = "toml"
-version = "0.7.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd79e69d3b627db300ff956027cc6c3798cef26d22526befdfcd12feeb6d2257"
-dependencies = [
- "serde",
- "serde_spanned",
- "toml_datetime",
- "toml_edit 0.19.15",
-]
-
 [[package]]
 name = "toml"
 version = "0.8.19"
@@ -2333,7 +2168,7 @@ dependencies = [
  "serde",
  "serde_spanned",
  "toml_datetime",
- "toml_edit 0.22.22",
+ "toml_edit",
 ]
 
 [[package]]
@@ -2345,19 +2180,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "toml_edit"
-version = "0.19.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b5bb770da30e5cbfde35a2d7b9b8a2c4b8ef89548a7a6aeab5c9a576e3e7421"
-dependencies = [
- "indexmap",
- "serde",
- "serde_spanned",
- "toml_datetime",
- "winnow 0.5.40",
-]
-
 [[package]]
 name = "toml_edit"
 version = "0.22.22"
@@ -2368,7 +2190,7 @@ dependencies = [
  "serde",
  "serde_spanned",
  "toml_datetime",
- "winnow 0.6.20",
+ "winnow",
 ]
 
 [[package]]
@@ -2377,7 +2199,7 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "clap",
- "itertools 0.13.0",
+ "itertools",
  "trippy",
 ]
 
@@ -2466,17 +2288,6 @@ dependencies = [
  "tracing-serde",
 ]
 
-[[package]]
-name = "triomphe"
-version = "0.1.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef8f7726da4807b58ea5c96fdc122f80702030edc33b35aff9190a51148ccc85"
-dependencies = [
- "arc-swap",
- "serde",
- "stable_deref_trait",
-]
-
 [[package]]
 name = "trippy"
 version = "0.13.0-dev"
@@ -2495,12 +2306,12 @@ version = "0.13.0-dev"
 dependencies = [
  "anyhow",
  "arrayvec",
- "bitflags 2.6.0",
+ "bitflags",
  "derive_more",
  "hex-literal",
  "indexmap",
  "ipnetwork",
- "itertools 0.13.0",
+ "itertools",
  "mockall",
  "nix",
  "parking_lot",
@@ -2512,7 +2323,7 @@ dependencies = [
  "thiserror 2.0.6",
  "tokio",
  "tokio-util",
- "toml 0.8.19",
+ "toml",
  "tracing",
  "tracing-subscriber",
  "trippy-packet",
@@ -2530,7 +2341,7 @@ dependencies = [
  "crossbeam",
  "dns-lookup",
  "hickory-resolver",
- "itertools 0.13.0",
+ "itertools",
  "parking_lot",
  "thiserror 2.0.6",
 ]
@@ -2541,7 +2352,7 @@ version = "0.13.0-dev"
 dependencies = [
  "anyhow",
  "hex-literal",
- "itertools 0.13.0",
+ "itertools",
  "thiserror 2.0.6",
 ]
 
@@ -2573,19 +2384,20 @@ dependencies = [
  "etcetera",
  "humantime",
  "insta",
- "itertools 0.13.0",
+ "itertools",
  "maxminddb",
  "petgraph",
+ "phf",
+ "phf_codegen",
  "pretty_assertions",
  "ratatui",
- "rust-i18n",
  "serde",
  "serde_json",
  "serde_with",
  "strum",
  "sys-locale",
  "test-case",
- "toml 0.8.19",
+ "toml",
  "tracing",
  "tracing-chrome",
  "tracing-subscriber",
@@ -2634,7 +2446,7 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b3644627a5af5fa321c95b9b235a72fd24cd29c648c2c379431e6628655627bf"
 dependencies = [
- "itertools 0.13.0",
+ "itertools",
  "unicode-segmentation",
  "unicode-width 0.1.14",
 ]
@@ -2686,16 +2498,6 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
 
-[[package]]
-name = "walkdir"
-version = "2.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
-dependencies = [
- "same-file",
- "winapi-util",
-]
-
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"
@@ -2778,15 +2580,6 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
-[[package]]
-name = "winapi-util"
-version = "0.1.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
-dependencies = [
- "windows-sys 0.59.0",
-]
-
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
@@ -2950,15 +2743,6 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
 
-[[package]]
-name = "winnow"
-version = "0.5.40"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f593a95398737aeed53e489c785df13f3618e41dbcd6718c6addbf1395aa6876"
-dependencies = [
- "memchr",
-]
-
 [[package]]
 name = "winnow"
 version = "0.6.20"
diff --git a/Cargo.toml b/Cargo.toml
index 220350b6..71aa2e2c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -58,10 +58,11 @@ nix = { version = "0.29.0", default-features = false }
 parking_lot = "0.12.3"
 paste = "1.0.15"
 petgraph = "0.6.5"
+phf = "0.11"
+phf_codegen = "0.11"
 pretty_assertions = "1.4.1"
 rand = "0.8.5"
 ratatui = "0.29.0"
-rust-i18n = "3.1.2"
 serde = { version = "1.0.201", default-features = false }
 serde_json = { version = "1.0.117", default-features = false }
 serde_with = { version = "3.11.0", default-features = false, features = ["macros"] }
diff --git a/crates/trippy-tui/Cargo.toml b/crates/trippy-tui/Cargo.toml
index 2134f2bd..e269c4b3 100644
--- a/crates/trippy-tui/Cargo.toml
+++ b/crates/trippy-tui/Cargo.toml
@@ -40,8 +40,8 @@ humantime.workspace = true
 itertools.workspace = true
 maxminddb.workspace = true
 petgraph.workspace = true
+phf.workspace = true
 ratatui.workspace = true
-rust-i18n.workspace = true
 serde = { workspace = true, default-features = false, features = [ "derive" ] }
 serde_json.workspace = true
 serde_with.workspace = true
@@ -58,5 +58,9 @@ insta = { workspace = true, features = ["serde"] }
 pretty_assertions.workspace = true
 test-case.workspace = true
 
+[build-dependencies]
+phf_codegen.workspace = true
+toml = { workspace = true, default-features = false, features = [ "parse" ] }
+
 [lints]
-workspace = true
\ No newline at end of file
+workspace = true
diff --git a/crates/trippy-tui/build.rs b/crates/trippy-tui/build.rs
new file mode 100644
index 00000000..13641e31
--- /dev/null
+++ b/crates/trippy-tui/build.rs
@@ -0,0 +1,29 @@
+fn main() {
+    generate_locales();
+}
+
+fn generate_locales() {
+    let path = std::path::Path::new(&std::env::var("OUT_DIR").unwrap()).join("locale_strings.rs");
+    let mut map = phf_codegen::Map::new();
+    let data: toml::Value =
+        toml::from_str(&std::fs::read_to_string("locales.toml").unwrap()).unwrap();
+    data.as_table().unwrap().iter().for_each(|(key, t)| {
+        let mut key_map = phf_codegen::Map::new();
+        t.as_table().unwrap().iter().for_each(|(lang, value)| {
+            key_map.entry(lang, &format!("{:?}", value.as_str().unwrap()));
+        });
+        map.entry(key, &format!("{}", key_map.build()));
+    });
+
+    std::fs::write(
+        path,
+        format!(
+            "
+#[allow(clippy::unreadable_literal)]
+static STRINGS: phf::Map<&'static str, phf::Map<&'static str, &'static str>> = {};
+",
+            map.build()
+        ),
+    )
+    .unwrap();
+}
diff --git a/crates/trippy-tui/locales/app.toml b/crates/trippy-tui/locales.toml
similarity index 99%
rename from crates/trippy-tui/locales/app.toml
rename to crates/trippy-tui/locales.toml
index c68b0c45..d64ea45b 100644
--- a/crates/trippy-tui/locales/app.toml
+++ b/crates/trippy-tui/locales.toml
@@ -1,5 +1,3 @@
-_version = 2
-
 [trippy]
 en = "trippy"
 fr = "trippy"
diff --git a/crates/trippy-tui/src/app.rs b/crates/trippy-tui/src/app.rs
index 77a09ecd..fb6b9450 100644
--- a/crates/trippy-tui/src/app.rs
+++ b/crates/trippy-tui/src/app.rs
@@ -19,7 +19,7 @@ pub fn run_trippy(cfg: &TrippyConfig, pid: u16) -> anyhow::Result<()> {
     let locale = locale();
     let _guard = configure_logging(cfg);
     let resolver = start_dns_resolver(cfg)?;
-    let geoip_lookup = create_geoip_lookup(cfg, &locale)?;
+    let geoip_lookup = create_geoip_lookup(cfg, locale)?;
     let addrs = resolve_targets(cfg, &resolver)?;
     if addrs.is_empty() {
         return Err(anyhow!(
@@ -88,7 +88,7 @@ fn start_tracer(
 /// Run the TUI, stream or report.
 fn run_frontend(
     args: &TrippyConfig,
-    locale: String,
+    locale: &str,
     resolver: DnsResolver,
     geoip_lookup: GeoIpLookup,
     traces: Vec<TraceInfo>,
@@ -96,7 +96,7 @@ fn run_frontend(
     match args.mode {
         Mode::Tui => frontend::run_frontend(
             traces,
-            make_tui_config(args, locale),
+            make_tui_config(args, locale.to_string()),
             resolver,
             geoip_lookup,
         )?,
diff --git a/crates/trippy-tui/src/frontend/render/bar.rs b/crates/trippy-tui/src/frontend/render/bar.rs
index a0899d4f..7ebcc413 100644
--- a/crates/trippy-tui/src/frontend/render/bar.rs
+++ b/crates/trippy-tui/src/frontend/render/bar.rs
@@ -13,20 +13,17 @@ use trippy_dns::ResolveMethod;
 pub fn render(f: &mut Frame<'_>, rect: Rect, app: &TuiApp) {
     let protocol = Span::raw(match app.tracer_config().data.protocol() {
         Protocol::Icmp => format!(
-            "{}/{}",
+            "{}/ICMP",
             fmt_target_family(app.tracer_config().data.target_addr()),
-            t!("ICMP"),
         ),
         Protocol::Udp => format!(
-            "{}/{}/{}",
+            "{}/UDP/{}",
             fmt_target_family(app.tracer_config().data.target_addr()),
-            t!("UDP"),
             app.tracer_config().data.multipath_strategy(),
         ),
         Protocol::Tcp => format!(
-            "{}/{}",
+            "{}/TCP",
             fmt_target_family(app.tracer_config().data.target_addr()),
-            t!("TCP"),
         ),
     });
 
diff --git a/crates/trippy-tui/src/frontend/render/settings.rs b/crates/trippy-tui/src/frontend/render/settings.rs
index 49fa5e7c..739c002c 100644
--- a/crates/trippy-tui/src/frontend/render/settings.rs
+++ b/crates/trippy-tui/src/frontend/render/settings.rs
@@ -170,8 +170,7 @@ fn format_all_settings(app: &TuiApp) -> Vec<(String, String, Vec<SettingsItem>)>
                 c = toggle_column,
                 d = move_down,
                 u = move_up
-            )
-            .to_string(),
+            ),
             columns_settings,
         ),
     ]
diff --git a/crates/trippy-tui/src/lib.rs b/crates/trippy-tui/src/lib.rs
index 32835ab9..ff0955f2 100644
--- a/crates/trippy-tui/src/lib.rs
+++ b/crates/trippy-tui/src/lib.rs
@@ -20,9 +20,6 @@ mod print;
 mod report;
 mod util;
 
-// initialize the i18n system.
-rust_i18n::i18n!("locales", fallback = "en");
-
 /// Run the Trippy application.
 pub fn trippy() -> anyhow::Result<()> {
     let args = Args::parse();
diff --git a/crates/trippy-tui/src/locale.rs b/crates/trippy-tui/src/locale.rs
index 5739fd0f..f0f42664 100644
--- a/crates/trippy-tui/src/locale.rs
+++ b/crates/trippy-tui/src/locale.rs
@@ -1,5 +1,16 @@
+use std::sync::{OnceLock, RwLock};
+
 const FALLBACK_LOCALE: &str = "en";
 
+static CURRENT_LOCALE: OnceLock<RwLock<&str>> = OnceLock::new();
+
+pub fn locale() -> &'static str {
+    &CURRENT_LOCALE
+        .get_or_init(|| RwLock::new(FALLBACK_LOCALE))
+        .read()
+        .unwrap()
+}
+
 /// Set the locale for the application.
 ///
 /// If the given locale is `None` or unsupported, the system locale is tried. If the system locale
@@ -7,74 +18,63 @@ const FALLBACK_LOCALE: &str = "en";
 ///
 /// In both cases, the language part of the locale is used if the full locale is not supported.
 pub fn set_locale(locale: Option<&str>) {
-    if let Some(locale) = locale {
-        set_locale_inner(locale);
-    } else if let Some(locale) = sys_locale::get_locale().as_ref() {
-        set_locale_inner(locale);
+    // SAFETY: locale should be a very short string (`"zh"`, `"en-GB"`), that even if leaked does not matter in memory
+	// usage, and this function should only be called once per run.
+    let new_locale = if let Some(locale) = locale {
+        locale.to_string().leak()
+    } else if let Some(locale) = sys_locale::get_locale() {
+        locale.leak()
     } else {
-        set_locale_inner(FALLBACK_LOCALE);
-    }
+        FALLBACK_LOCALE
+    };
+    *CURRENT_LOCALE
+        .get_or_init(|| RwLock::new(FALLBACK_LOCALE))
+        .write()
+        .unwrap() = new_locale;
 }
 
-/// Get the current locale.
-pub fn locale() -> String {
-    rust_i18n::locale().to_string()
-}
-
-/// Get all available locales.
 pub fn available_locales() -> Vec<&'static str> {
-    rust_i18n::available_locales!()
+    let mut locales: Vec<_> = STRINGS.get("trippy").unwrap().keys().copied().collect();
+    locales.sort_unstable();
+    locales
 }
 
-fn set_locale_inner(locale: &str) {
-    let all_locales = rust_i18n::available_locales!();
-    if all_locales.contains(&locale) {
-        rust_i18n::set_locale(locale);
-    } else {
-        let language = split_locale(locale);
-        if all_locales.contains(&language.as_str()) {
-            rust_i18n::set_locale(&language);
-        } else {
-            rust_i18n::set_locale(FALLBACK_LOCALE);
-        }
+/// Like [`set_locale`], the language part of current locale is used if the full locale is not supported.
+pub fn get_string(key: &str) -> &str {
+    let kt = STRINGS.get(key).unwrap();
+	let locale = locale();
+    if let Some(v) = kt.get(locale) {
+        v
+    } else if let Some(v) = kt.get(&locale[..2]) {
+		v
+	} else {
+        kt.get(FALLBACK_LOCALE).unwrap()
     }
 }
 
-fn split_locale(locale: &str) -> String {
-    let mut parts = locale.split(['-', '_']);
-    parts
-        .next()
-        .map_or_else(|| FALLBACK_LOCALE, |lang| lang)
-        .to_string()
-}
-
-// A macro for translating a text string.
 #[macro_export]
 macro_rules! t {
-    ($($all:tt)*) => {
-        rust_i18n::t!($($all)*)
-    }
+    ($key:expr) => {
+        std::borrow::Cow::Borrowed($crate::locale::get_string($key))
+    };
+    ($key:expr, $($kt:ident = $kv:expr),+) => {
+        {
+            let string = t!($key);
+            $(
+                let string = string.replace(concat!("%{", stringify!($kt), "}"), &$kv.to_string());
+            )+
+            string
+        }
+    };
+    ($key:expr, $($kt:literal => $kv:expr),+) => {
+        {
+            let string = t!($key);
+            $(
+                let string = string.replace(concat!("%{", $kt, "}"), &$kv.to_string());
+            )+
+            string
+        }
+    };
 }
 
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn test_split_locale_dash() {
-        let language = split_locale("en-US");
-        assert_eq!(language, "en");
-    }
-
-    #[test]
-    fn test_split_locale_underscore() {
-        let language = split_locale("en_US");
-        assert_eq!(language, "en");
-    }
-
-    #[test]
-    fn test_split_locale_no_region() {
-        let language = split_locale("en");
-        assert_eq!(language, "en");
-    }
-}
+include!(concat!(env!("OUT_DIR"), "/locale_strings.rs"));
diff --git a/crates/trippy-tui/src/print.rs b/crates/trippy-tui/src/print.rs
index ce14aa2c..d6bfed2d 100644
--- a/crates/trippy-tui/src/print.rs
+++ b/crates/trippy-tui/src/print.rs
@@ -2,7 +2,6 @@ use crate::config::{Args, TuiCommandItem, TuiThemeItem};
 use crate::locale::available_locales;
 use clap::CommandFactory;
 use clap_complete::Shell;
-use itertools::Itertools;
 use std::process;
 use strum::VariantNames;
 
@@ -32,7 +31,7 @@ pub fn print_man_page() -> anyhow::Result<()> {
 }
 
 pub fn print_locales() {
-    println!("TUI locales: {}", available_locales().iter().join(", "));
+    println!("TUI locales: {}", available_locales().join(", "));
     process::exit(0);
 }