Text Diff — Compare Two Texts
Paste two versions of a text and see every added, removed and changed line highlighted instantly. Perfect for code review, contracts and content edits.
Runs 100% in your browser — nothing is ever uploaded.
What is Text Diff?
Compare two texts online and see the differences highlighted line by line — additions, deletions and changes. Free, private, in-browser diff tool. Paste your content, get an instant result, and copy or download the output with a single click. Free and unlimited, with no watermarks and no registration — all processing happens right in your browser, so nothing is ever sent to a server.
How to use Text Diff
- Open Text Diff — it loads instantly and needs no sign-up.
- Paste or type your input into the editor (or press Sample to try an example).
- Adjust the available options if needed and press the action button.
- Copy the result with one click or download it as a file.
Frequently asked questions
Is Text Diff really free?
Yes — Text Diff is 100% free with no limits, no watermarks and no registration. You can use it as often as you like, on as many files or inputs as you need.
Is my data safe when I use Text Diff?
Absolutely. Text Diff runs entirely in your browser using JavaScript — your input is processed on your own device and is never uploaded to any server.
Does Text Diff work on mobile devices?
Yes. Text Diff works in any modern browser on desktop, tablet and mobile (Chrome, Firefox, Safari, Edge) — there is no app to install.
Is my text sent to a server?
Never. All TextKit tools process text locally in your browser using JavaScript. Nothing is uploaded, logged or stored.
Do the counters match Twitter/X and SEO limits?
Yes — the character counter counts Unicode characters the way platforms do, and shows live limits for tweets, meta titles, meta descriptions and SMS.
Can I use these tools offline?
Yes. Once the page has loaded, every tool keeps working without a connection — nothing depends on a server.