VersionDiff
0 BYTES UPLOADED — EVER

Compare two PDFs, line by line.
Your files never leave this device.

VersionDiff reads both documents inside your browser, aligns the text even when pagination and line breaks shift, and highlights only substantive changes — spacing, page flow and dot leaders are ignored. No upload. No server. No account.

ORIGINAL

Drop the old version here

or click to browse — PDF only

REVISED

Drop the new version here

or click to browse — PDF only

01 — IN-BROWSER

Your documents stay put

Text extraction and comparison run as JavaScript on your own machine. Your files are read into memory and never uploaded, sent, or stored anywhere.

02 — VERIFIABLE

Don't take our word for it

Every line of code and every font loads from this domain — nothing from third-party CDNs. Open your browser's Network tab while you compare: you'll see no requests carrying your documents.

03 — SIGNAL, NOT NOISE

Substantive changes only

Only relevant edits are highlighted to the reviewer; minor formatting changes — spacing differences, text reflowing to a different page, dot leaders — are filtered out.

Comparison summary

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0%
Legend: Added Removed Changed Re-flowed (identical)
Original Revised