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Diff Checker — Text
Compare text by lines, words, or characters. Fast, free, open source, ad-free.
Use this diff checker to compare two pieces of text and see exactly what changed. Supports line-by-line, word-by-word, and character-by-character comparison. Made with 💜.
How to Use the Text Diff Checker
Paste your original text on the left and your modified text on the right. Choose a comparison mode — Lines, Words, or Characters — then click Compare.
Line Mode
Compares text line by line and shows a side-by-side split view. Great for comparing code, config files, or prose documents.
Word Mode
Highlights individual words that were added or removed. Useful for spotting edits in paragraphs.
Character Mode
Shows every single character that changed. Perfect for catching subtle spelling or punctuation differences.