Compare texts with highlighted differences
Paste the original and the new version into the two panes — the service finds differences line by line and highlights the changed fragments inside each line. Unlike a plain diff you instantly see not only which line changed, but what exactly changed in it: a word, a number, a punctuation mark. It suits articles, translations, contracts and any unformatted text. Document contents are never stored — only a fingerprint of the pair stays on the server.
Supported: .conf, .css, .csv, .docx, .htm, .html, .ini, .js, .json, .log, .md, .pdf, .php, .py, .sh, .sql, .ts, .tsv, .txt, .xls, .xlsx, .xml, .yaml, .yml. Limit: 10000 lines for two documents. Nothing is stored — only a fingerprint of the pair stays on the server.
Features
- Line-by-line comparison with inline highlighting of changes
- Ignore case, extra spaces and line-ending differences
- Correct handling of Cyrillic and UTF-8
- Swapping the panes does not use a free comparison
- The 10,000-line limit keeps the browser responsive
Questions and answers
How do I compare two texts online for free?
Paste both texts into the panes and press “Compare”. The first 10 unique document pairs are free and need no sign-up.
What counts as one comparison?
A unique document pair. Comparing the same texts again or swapping the panes does not use the limit.
Is my text stored on the server?
No. Only a fingerprint of the pair is kept so the limit is not charged twice. The content itself is never written.
How is this different from a diff in a code editor?
Changes inside a line are highlighted and line numbers are aligned in two columns — better for texts and documents than for code.
Is there a size limit?
Up to 10,000 lines for two documents in the web interface. For larger volumes use the paid API.
Ready to start? The working screen is above. Need unlimited comparisons — see the plans.
Page updated: 2026-11-10
Related pages
- Find differences in text — Quickly find differences between two texts: changed lines, added and removed fragments. Character-level highlighting, no sign-up required.
- Compare two documents — Upload two documents and get a report of the differences: edits, insertions, deletions. Supports DOCX, PDF, XLSX, XLS and plain text formats.
- Compare code — Compare two code snippets: line-by-line changes and inline highlighting. Python, JS, PHP, SQL, CSS, HTML, JSON and other languages. For free.
- Text comparison pricing — prices and terms.