Diff Image Generator

Diff Image Generator takes a unified diff — the patch format produced by tools like git diff with its @@ hunk headers, plus-prefixed additions and minus-prefixed deletions — and renders it as a color-coded image card. Added lines are tinted green, removed lines red, and context lines stay neutral, recreating the familiar review view as a clean, shareable graphic.

You paste the diff text and the tool parses each line by its leading marker, applies the appropriate background and text color, draws the hunk headers, and frames the whole thing in a window-style card exportable as an image. This makes a code change legible at a glance even to people who never open the repository, and it sidesteps the formatting problems you get when pasting raw diffs into chat or slides where indentation and coloring are lost.

It's a natural fit for changelogs, pull-request summaries, blog posts explaining a fix, and social announcements of a notable patch. It sits alongside the Code Image Generator, which renders a whole snippet, and the Terminal Screenshot Generator, which renders shell sessions — here the focus is specifically the before/after delta of a unified diff.

Practical tips: feed it genuine unified-diff output (for example from git diff, git show, or diff -u) so the +, -, and @@ markers are present and parse correctly. Keep the diff focused on one logical change with a few lines of surrounding context, since a sprawling multi-file patch becomes unreadable as a single card, and choose a theme whose green and red provide enough contrast against your destination background.