Does it compare word by word or line by line?

It highlights word-level additions and removals between the two texts you paste in.

Does Text Diff Checker upload my files to a server?

No. Text Diff Checker runs entirely in your browser using on-device processing, your files never leave your device.

Compare two blocks of text and highlight the differences.

See it in action

2 textsDifferences

Original text

Changed text

File Converter

Convert data files between CSV, JSON and TSV.

JSON Formatter

Format, validate and minify JSON.

Base64 Converter

Encode or decode text and files as Base64.

URL Encoder/Decoder

Encode or decode URLs and query strings.