Use cases for comparing text
Text comparison is useful for reviewing contract or document edits, comparing two versions of code or config files, and spotting subtle changes between drafts.
Text Compare
Paste two versions of a text to see exactly which lines were added, removed or left unchanged.
How it works
- 1
Paste the original content on the left (or first panel).
- 2
Paste the changed content on the right (or second panel).
- 3
Review the highlighted differences; copy a unified view if offered.
Why use this tool
- Runs entirely in your browser — nothing is uploaded to a server.
- 100% free, no sign-up, no limits.
- Works in any modern browser — no app install, no extension, no account.
How to use Text Compare
Use both panels in Text Compare to compare two versions. Differences update as you edit either side — nothing needs to be uploaded.
Tips for better results
Keep formatting consistent when comparing code. For huge files, compare a focused slice first.
Privacy and offline-friendly processing
Whenever possible, Text Compare processes your data locally with JavaScript in this page. That means drafts, secrets, and unfinished work stay on your device by default. Prefer this workflow when you do not want to upload sensitive text, tokens, passwords, or files to a third-party service.
Frequently asked questions
Does this compare word by word or line by line?
It compares line by line, which works well for paragraphs, code, and lists — for single-line text, put each version on its own line.
Can I ignore capitalization differences?
Yes, disable "case-sensitive" to treat differently-cased lines as identical.
Is my data uploaded when I use this tool?
For most FlyUtils tools, no. Processing happens in your browser with JavaScript. If a tool ever needs a server, that will be stated clearly on the page.
Is Text Compare free to use?
Yes. Text Compare is free, with no sign-up and no artificial usage caps for normal personal and work use.
Does Text Compare work on mobile?
Yes. The page is mobile-first, so you can paste input, tweak options, and copy results from a phone or tablet.