Text Diff Checker
FreeCompare two texts side by side and highlight every change.
Hello world−This is line two+This is line two (edited)Keep this line+Brand new line
Showcase
See Text Diff Checker in action
Compare two texts side by side and highlight every change.
- Private — files never leave your device
- Results update in the browser as you work
- Works on desktop and mobile browsers
How to use Text Diff Checker
Compare two versions of text and see every change instantly.
Paste original
Put the older version in the left (Original) box
Paste changed
Put the newer version in the right (Changed) box
Review diff
Green lines were added, red lines were removed
Copy summary
Copy the counts or full report if you need to share it
FAQs
Answers to the questions people ask most about privacy, quality, limits, and Text Diff Checker.
Yes. Text Diff Checker is free for everyday use. It runs in your browser with no account required for this tool.
For this tool, processing stays on your device in the browser. Files are not uploaded to Tools2Easy servers, so there is nothing for us to store or delete later. Close the tab when you are done if you want the in-memory preview cleared.
No install and no account for free tools. Open the page, add your file or text, process, then download or copy the result.
Most PDF and utility tools keep content fidelity unless you choose a compress or lossy convert option. Always preview the result before downloading when a preview is available.
Accepted types for Text Diff Checker are listed in the upload area. Most browser tools work best under about 100 MB; very large files may fail or run slowly because your device does the work.
Yes, in modern mobile browsers (Chrome, Safari, Firefox, Edge). Large PDFs, images, or videos can be slower on phones because processing uses your device memory and CPU.
Browser tools depend on your device and file size — not a remote server queue. Close extra tabs, try a smaller file, or use a desktop browser if a large job stalls. If the tab crashes, the file was likely too heavy for available memory.
Yes. Results show in the workspace first. Download only when you are happy with the output. Use Compare on image/video results when you want to check against the original.
Browser-side text utilities keep content on your device. Premium AI features that call an API send the prompt to that provider — we do not sell your text, but the provider’s policy applies.
Yes. Results appear in the workspace so you can review, edit, and copy what you need.
This utility is designed for quick, local text tasks without a model call.
Add a clear source file, adjust the settings shown for this tool, preview the output, then download. If something looks off, use Adjust & reprocess or start over with a fresh file.