Compare PDF files online

Extract and compare page text without sending either PDF to a server. Everything runs locally, with no account required.

PDF

PDF ≤ 30 MB · ≤ 500 pages · selectable text only

PDF Compare

Extract and compare page text without sending either PDF to a server.

PDF
Original file
Drop a PDF file here
Updated file
Drop a PDF file here
Deterministic local comparison

Content is processed in your browser · Not sent to the application server · Free to use

How PDF Compare works

The browser extracts selectable text page by page and performs a line comparison. Scanned image-only pages require OCR and are reported as having no extractable text.

The comparison is deterministic: the same files and settings produce the same classification. File contents remain inside the current browser session.

Get a cleaner result

  1. 01Use text-based PDFs for best results.
  2. 02Treat changed line wrapping as a formatting signal.
  3. 03Use visual review for image-only or layout-critical pages.

Frequently asked questions

Does this perform OCR?

No. The initial tool compares embedded selectable text and identifies pages with no extractable text.

Are PDFs uploaded?

No. PDF parsing and comparison run in your browser.

Private by design

Runs in your browser

Content is processed in your browser and not sent to the application server

Works without an account