Compare · review · copy

Text changes, aligned without an upload.

TextDiff compares complete lines with a bounded exact algorithm, two number streams and explicit whitespace rules in your browser.

Open text comparison

No account, upload, saved history, remote fetch, file reader or result URL.

Three explicit steps

Paste, configure, review

Paste both versions

Original and revised plain text remain in the current browser page.

Choose one matching rule

Exact, line-edge or all-whitespace matching changes equality only.

Read both line streams

Retained, removed and added records preserve their source positions.

Neutral text review

Useful for ordinary software, writing and translation

Compare a configuration example before updating documentation.
Review edited paragraphs with original and revised line numbers.
Suppress known whitespace noise without rewriting either source.
Copy a deterministic unified review view for an ordinary workflow.

Reproducible text pairs

Follow exact and whitespace-aware comparisons

Both examples correspond to executable presets and explain every line record, count and configured similarity value.

View examples

Two versions · local comparison

Compare the text without uploading it

Paste the original and revised versions into TextDiff, choose one explicit matching rule, and review the ordered line records before using the result elsewhere.

Open TextDiff