Merge pull request #1112 from hx2A/html_alt_text

add support for alt tags for jpeg and png images
jupyter · Oct 9, 2019 · fda8ba5 · fda8ba5
2 parents 2a1802e + 4419fee
commit fda8ba5
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/nbconvert/templates/html/basic.tpl b/nbconvert/templates/html/basic.tpl
@@ -155,6 +155,10 @@ height={{ height }}
 {%- if output | get_metadata('unconfined', 'image/png') %}
 class="unconfined"
 {%- endif %}
+{%- set alttext=(output | get_metadata('alt', 'image/png')) or (cell | get_metadata('alt')) -%}
+{%- if alttext is not none %}
+alt="{{ alttext }}"
+{%- endif %}
 >
 </div>
 {%- endblock data_png %}
@@ -177,6 +181,10 @@ height={{ height }}
 {%- if output | get_metadata('unconfined', 'image/jpeg') %}
 class="unconfined"
 {%- endif %}
+{%- set alttext=(output | get_metadata('alt', 'image/jpeg')) or (cell | get_metadata('alt')) -%}
+{%- if alttext is not none %}
+alt="{{ alttext }}"
+{%- endif %}
 >
 </div>
 {%- endblock data_jpg %}