Text Diff Checker (Compare Two Texts)
Guide & FAQDifferences
Guide: Text Diff Checker (Compare Two Texts)
Spot every change between two texts
A diff checker shows exactly what changed between two versions of a text. Paste the original in the first box and the new version in the second. Differences are highlighted immediately, with a summary of how many items were removed, added and left unchanged.
Choose how to compare
- Lines: best for code, lists, config files and logs. Changed lines are paired up and the changed words inside are highlighted.
- Words: best for articles, contracts and essays where you care about edited phrases.
- Characters: best for catching small typos, changed numbers or a single swapped letter.
Options
Use Ignore case when capitalisation changes do not matter. Use Ignore whitespace to skip extra spaces, tabs or reflowed line breaks. The Swap button exchanges the two texts, which is handy when you pasted them in the wrong order. Try a sample loads a small example so you can see the colours at work.
Reading the result
Red with a strike-through marks text that was in the original but is gone. Green marks text that was added. Unmarked text is the same in both. In side by side view the original is on the left and the new text on the right. In inline view they are merged into a single flow.
Privacy and limits
The comparison runs entirely in your browser, needs no signup and has no set limit. For very large texts the tool uses a faster, simpler comparison so your device stays responsive.
FAQ
How do I compare two texts?
Paste the original text on the left and the changed text on the right. The differences appear below right away. Removed parts are red and added parts are green.
What is the difference between line, word and character diff?
Line mode compares whole lines and also highlights the changed words inside them. Word mode compares word by word, good for prose. Character mode shows every changed letter, good for spotting typos.
Can I ignore case and extra spaces?
Yes. Tick Ignore case to treat upper and lower case as equal. Tick Ignore whitespace to ignore differences in spaces, tabs and line spacing.
What is the difference between side by side and inline view?
Side by side shows the original and changed text in two columns. Inline merges both into one flow with deletions and additions marked in place.
Is my text uploaded?
No. The comparison runs in your browser and the text is not sent by this tool. Very large inputs are compared in a simpler way to keep the page responsive.