Step 2 of 2

Prompt Version Diff

Compare two prompt versions side-by-side with word/character-level diff highlighting. Save versions with labels, browse history, and compare any two saved versions.

Added Removed Changed
Words: 0Chars: 0
Words: 0Chars: 0
Original (Version A)
Modified (Version B)
Added: 0 Removed: 0 Changed: 0
Paste text in both textareas to see the diff.
How it works: The diff is computed entirely in your browser — no data is sent to any server. Word mode compares whitespace-delimited tokens. Character mode compares individual characters for granular inspection. Green = added, red = removed, yellow = replaced.
Save New Version
Saved Versions 0 saved

No versions saved yet.
Paste a prompt above and click Save Version.

How it works: All versions are stored in your browser's local storage — nothing is ever sent to a server. The diff algorithm performs a word-level comparison using LCS (Longest Common Subsequence). Color: ● Removed   ● Added   ● Changed