Text Diff
17 toolsCompare two blocks of text line by line.
Runs in your browser — your files and text stay on your device
Compare two blocks of text side by side, line by line. Lines that differ at the same position are highlighted, but there is no smart alignment, so inserting a line near the top marks everything after it as changed. The comparison happens in your browser and nothing is uploaded.
CaseCountDiffLorem IpsumSlug GeneratorRemove DuplicatesWord FrequencyText ReverseLine SorterFind & ReplaceFancy Text GeneratorReadability ScoreText-to-SpeechSpeech-to-TextWhitespace NormalizerROT13 / Caesar CipherPalindrome Checker
How to use this tool
- 1Paste original text on the left, changed on the right.
- 2Differing lines are highlighted in red.
- 3Updates immediately as you edit.
Frequently asked questions
Line-level or word-level diff?
Line-level — the whole line highlights if any part differs.
Is either text uploaded anywhere?
No — comparison runs locally.