Private text comparison

Pagan Text Diff

Compare drafts, code, data, translations or whole chapters. Changed lines and words are calculated locally in your browser.

Nothing you compare is uploaded

The diff engine is first-party JavaScript. Text remains in this tab unless you explicitly download an output report. Large, radically different documents may use a clearly marked coarse comparison rather than freezing your device.

Original

Left side

Open file

0 lines · 0 characters

Revised

Right side

Open file

0 lines · 0 characters

Comparison rules Ignore letter case Ignore whitespace changes Ignore leading and trailing spaces Ignore blank lines Format valid JSON first Wrap long lines

Line and word detail

Changed line pairs receive a second comparison so the exact words, punctuation and spaces that changed can be highlighted.

Useful normalization

Case, whitespace and blank lines can be ignored. Valid JSON can be formatted before comparison so structural changes are easier to see.

Honest performance limits

Inputs are limited to 8 MB and 40,000 lines per side. Extremely divergent documents may use a coarse middle block instead of pretending the browser has infinite memory.