diff

Text Diff / Compare — Compare two blocks of text and see exactly what changed — added lines in green, deleted in red, unchanged in gray.

JSON Diff — Compare two JSON values structurally — see exactly what was added, removed, or changed, with full key paths.

Text Compare — Compare two texts side-by-side to highlight line and character differences. Ideal for developers, writers, and editors.

Code Diff & Merge — Compare two code snippets side-by-side. View additions and deletions with syntax highlighting, and merge changes interactively with ...

Compare Two Lists — Drop two newline-separated lists into the boxes and instantly see what is shared, what is unique to each, and the merged union.

Free online pdf compare. No signup, no upload — works entirely in your browser. Fast, private, and free forever.