Compare PDF · 2 min read

How to Compare Two PDF Files Online — Free, No Login

Comparing two versions of a PDF — to see what changed between a draft and final, or two contract versions — is fast and visual in the browser.

1

Open pdfeditor.onl/compare-pdf

Navigate to the compare tool — no login or account required.

2

Upload Both PDFs

Upload the first PDF as File A and the second as File B. Click Compare. The tool processes both documents and renders them in a side-by-side viewer.

Tip: For best comparison results, ensure both PDFs have the same page size and orientation. Comparing a portrait to a landscape version adds false differences.

3

Review Differences

Use Side-by-Side view to read both versions in parallel. Switch to Diff view to see all pixel differences highlighted in red — every changed word, line, or image clearly marked.

Compare PDF Files Free — No Login →

Frequently Asked Questions

Does the comparison tool work on scanned PDFs?

Yes. The visual diff mode works on any PDF including scanned documents — it compares the rendered page images pixel by pixel.

Is this free with no login?

Yes — completely free, no account or login required.

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