Free Text Compare
Paste two drafts side by side and see exactly what was added and removed, word by word or line by line. Ideal for checking edits, contracts and revisions — and it stays in your browser.
What is the text compare?
A text compare tool, also called a diff checker, shows exactly what changed between two versions of a piece of text. It highlights what was added in one colour and what was removed in another, so you can see the edits at a glance instead of reading both versions and hoping to spot the difference. It's the fastest way to check what a client altered in a contract, what an editor changed in your draft, or whether two files that look identical really are. Slashit's comparison runs entirely in your browser, so confidential documents and client work are never uploaded, and you can compare word by word for prose or line by line for lists, code and data.
How our free text compare works
Paste both versions
Put the original on the left and the changed version on the right.
Choose the detail level
Compare by words for prose, or by lines for code, lists and structured data.
Read the differences
Green marks additions, struck-through red marks deletions, with a count of each.
Who uses our free text compare?
Writers and editors
See precisely what changed between drafts without re-reading both.
Freelancers and agencies
Check what a client edited in a proposal or contract before signing.
Developers
Compare configuration files, logs or snippets outside a git workflow.
Translators and proofreaders
Verify corrections were applied and nothing else moved.
Why use the text compare?
Every change highlighted
Additions and deletions are colour-coded, so nothing slips past.
Word or line granularity
Word-level for prose, line-level for anything structured.
Confidential by default
Comparison happens in your browser — nothing is uploaded.
Tips for getting the best results
Use line mode for code and lists
Word-level comparison of structured text produces noisy results. Line mode is far easier to read.
Ignore capitalisation for style edits
When you only care about substantive changes, the case-insensitive option removes a lot of distraction.
Paste as plain text
Copying from a word processor can bring invisible formatting characters that show up as spurious differences.
Watch for trailing spaces
Two lines can look identical but differ by a space at the end. The comparison catches it even when your eyes don't.
Frequently asked questions
How do I compare two texts for differences?
Paste the original on the left and the changed version on the right, then click Compare. Additions appear in green, deletions in struck-through red.
Is my text uploaded to a server?
No. The comparison runs entirely in your browser, so it's safe for contracts, client work and anything confidential.
What's the difference between word and line comparison?
Word mode highlights individual changed words, which suits prose. Line mode marks whole changed lines, which is clearer for code, lists and data.
Can I compare two files?
Open each file, copy its contents and paste them into the two boxes. The comparison works on any text you can paste.
Is there a size limit?
No fixed limit, though very large texts take longer since the work happens on your device.
