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Compare PDF

Compare two PDFs by page text and rendered previews, then download a PDF comparison report.

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    Comparison

    Choose exactly two PDFs: original first, updated second. Drag the queued files to change the order. Up to 100 pages per PDF. The report compares page text, dimensions and rendered previews; it does not compare metadata or interactive behavior.

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    Free No watermark No sign-up Files never uploaded
    Files in the wrong order?Drag them — original first, updated second.
    Scanned PDFs?They compare by look only — run OCR PDF first.
    Up to 100 pages eachLonger files compare in parts.

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    How to use Compare PDF

    1. Select your two PDFs.Choose exactly two PDFs: the original and the updated version.
    2. Check the order.The original should be first and the updated one second.
    3. Click Compare PDF.You get a PDF report comparing text, page size and look.
    4. Read the report.It lists which pages changed.

    About Compare PDF

    When is it useful? Compare PDF shows what changed between two versions of a document — a revised agreement, an updated price list, a corrected thesis or a new version of a policy — so you do not have to check every page by eye.

    Good to know: choose exactly two PDFs, the original first and the updated one second. You get a PDF report that compares the text, the page sizes and the look of every page, and lists which pages changed. Up to 100 pages per PDF are compared; metadata and interactive features are not compared.

    Tips for Better Results

    • Drag the files in the list if they are in the wrong order.
    • Scanned PDFs compare by look only — run OCR PDF first for a text comparison.
    • Read the changed pages carefully; the report points you to them.

    Frequently Asked Questions

    What does the report compare?
    The text, the page sizes and the look of every page, and it lists which pages changed.
    Can it compare scanned PDFs?
    By look only. Run OCR PDF first for a text comparison.
    Are metadata and form fields compared?
    No. Metadata and interactive features are not compared.
    Works with: Adobe Reader · Chrome · Edge · Mac Preview · phone PDF viewers

    What converts well, and what doesn't

    ComparedIn the PDF report
    TextYes
    Page sizesYes
    Look of every pageYes
    Changed pagesListed
    Metadata and interactive featuresNot compared
    💡 Tip: Read the changed pages carefully; the report points you to them.

    Common uses

    AgreementsCheck revisions.
    Price listsSee updated prices.
    ThesesCheck corrections.
    PoliciesSpot new wording.
    Design proofsCompare versions.
    Legal filesFind changes.

    Is my file safe?

    Browser processing: your files are processed on your own device and are never uploaded to our server.

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    Guide

    Compare PDF: a complete guide

    Why compare two versions

    When a contract, price list, policy, thesis or quotation comes back revised, the important question is: what changed? Reading both versions side by side is slow and it is easy to miss a changed number or a removed sentence. Compare PDF checks the pages for you.

    How it works

    Choose exactly two PDFs — the original first and the updated version second; drag them in the list to change the order. Up to 100 pages per PDF are compared. The tool compares each page's text, its page size, and how the page looks, and creates a PDF report showing the number of pages in each file and which pages changed.

    Reading the report

    Use the report as a map: it points you to the pages that differ, so you can read those pages carefully in both files. Pages that are identical in text and appearance can be skipped. Metadata, form behaviour and links are not compared.

    Common problems and how to fix them

    Every page shows as changed: a page was added or removed near the start, shifting all later pages — compare the page counts and check where the shift begins. Scanned PDFs: their text cannot be compared until OCR is run, so only appearance is compared — use OCR PDF on both first. “Choose exactly two PDFs”: remove extra files from the list.

    Good habits

    Keep clear version names such as v1 and v2, always put the original first, and confirm important changes by reading the actual pages.

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