Introducing Nova Diff — a free text diff checker
We just launched Nova Diff, a new web tool. Paste two texts and it highlights the differences — additions in green, deletions in red.
What it does
- Text diff: compare by line, word, or character. Line mode works well for code and config files, while word and character modes are great for proofreading prose
- JSON diff: documents are automatically formatted before comparison, so indentation and line-break differences don't get in the way. Turn on "Ignore key order" to treat JSON that differs only in key order as identical
- Options: ignore whitespace (line mode), ignore case (word and character modes), and swap sides with one click
How to use it
- Paste the two texts you want to compare into the two input panes
- Pick a granularity (line, word, or character) — the diff is highlighted automatically
- For JSON, head to the JSON diff page; documents are auto-formatted so formatting differences never get in the way
No sign-up, no installation — it works the moment you open it.
Privacy
The diff is computed entirely in your browser (client-side). Your text is never sent to a server, so it's safe to compare internal documents or personal notes.
Every feature is free.
When it comes in handy
- Quickly comparing a snippet before and after a fix, ahead of a code review
- Checking exactly what changed after rewriting a piece of text
- Verifying that an API's JSON response is the same across environments
Novare Orbis offers other free, browser-based tools as well — see the full list.