Text Diff
17 toolsCompare two blocks of text line by line.
Runs in your browser — your files and text stay on your device
A complete text toolkit — convert case, count words, diff text, sort and dedupe lines, find & replace with regex, generate fancy Unicode text and Lorem Ipsum, check readability, use text-to-speech and speech-to-text, normalize whitespace, apply a Caesar cipher, and check palindromes. All processing happens in your browser tab.
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.