Compare two texts, code blocks or files side by side online free. Line-by-line diff with additions in green and removals in red. Stats, swap A↔B. No upload.
Built for real developer workflows. No fluff, just the tools you need.
Every line is compared individually. Additions appear in green (+), removals in red (−). Unchanged lines shown for context.
See added lines, removed lines, unchanged lines and percentage changed — updated live as you type.
Instantly reverse which version is original and which is modified with the Swap button.
Copy the full diff output as plain text for commit messages, bug reports or documentation.
Diff reruns instantly on every keystroke in either panel. No delay, no clicking.
Your text and code never leaves your browser. Safe for comparing private configs and unreleased code.
Get results in seconds — no account, no file upload required.
Paste the original version into the left panel (A).
Paste the new version into the middle panel (B). The diff runs immediately.
Green lines were added, red lines removed, grey lines unchanged. Copy the diff or screenshot it.
Every tool at itsseven is free, private and browser-based.