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

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.

No sign-up, no installation — 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

👉 Try Nova Diff

Novare Orbis offers other free, browser-based tools as well — see the full list.