Compare two PDFs

Compare two PDFs

Drop in both versions and get a report showing which lines were added and which removed, page by page — the contract redline you were going to do by eye.

Runs in your browserNothing is uploadedNo account, no watermark

You get a self-contained HTML report — additions in green, removals in red, page by page. It compares the text layer, so a changed image, font or colour will not show up, and two scans cannot be compared at all.

How to compare two pdfs

  1. 1

    Drop in both PDFs

    Select the two files together. The first is treated as the earlier version.

  2. 2

    Choose how much to show

    Only the changes, for a short report, or the full text with the changes marked, for context.

  3. 3

    Compare

    The text of each page is read and the two versions are diffed line by line.

  4. 4

    Open the report

    You get an HTML file. Open it in any browser — additions in green, removals in red.

Compared page by page

Each page is diffed against the same page in the other document, which keeps the comparison fast and the report legible. The trade-off is that inserting a page early on shifts everything after it, and the report will show the rest of the document as changed.

Text only

This compares words. A changed logo, a different font, a moved table or a colour change will not show up. For visual differences, export both to images and compare those.

A file you can send

The report is a self-contained HTML file with no external dependencies, so it opens offline, prints, and can be attached to an email as the record of what changed.

Questions

No. Both files need a text layer. Two scans have no characters to compare, only pixels.

Quill

A calm, fast PDF workspace. Free to use, private by default.

Product

EditorAll PDF tools

Templates

Quill AI

Mobile

Tools

Convert

Organise

Company

About

Privacy

Terms

Contact

© 2026 Quill. All rights reserved.
PrivacyTermsStatus