No API fees · Runs on your device · LCS diff
Sentence difference checker
See sentences added and removed between document versions.
Choose a local model, trainable classifier or statistical helper. Inputs stay on your device; model files download only when you run a model tool.
Text & settings
Analysis result
Enter your text or try a sample.
Method & limitations
A sentence-level longest common subsequence separates unchanged, removed and added sentences. Minus signs refer to the first text; plus signs refer to the updated text. Exact mode compares sentence strings. Normalized mode ignores case, punctuation and word separators. This is not a character-level diff.
Runs in a Web Worker. Inputs and results are cleared when you leave or choose Clear text; they are not saved in browser storage. Downloaded files remain on your device.
A guide to this tool
How to use Sentence difference checker
- Enter your text or load this tool’s sample.
- Choose the available settings and fill in a second input if this tool has one.
- Run the analysis and review the output and method notes before using it.
A sample you can try
Sample input
Product photos are clear. Delivery takes three days. Returns are available.
Updated text
Product photos are clear. Delivery takes two days. Phone support is available.
Sample output
Unchanged sentences: 1 - Sentence 2: Delivery takes three days. - Sentence 3: Returns are available. + Sentence 2: Delivery takes two days. + Sentence 3: Phone support is available.