Add both documents
Upload the original PDF as document A and the revised PDF as document B.
PDF TOOLS · FREE ONLINE TOOL
PDF Compare
Compare two PDFs and see exactly what text changedCompare two PDF files free and see every text change between versions, page by page. Perfect for contracts, drafts and proofs. Nothing is uploaded.
// PDF COMPARE · GET STARTED
Use PDF Compare
Compare two PDFs and see exactly what text changed
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Document A (original)
Choose the original PDF
Read in your browser only.
Document B (revised)
Choose the revised PDF
Read in your browser only.
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How to use the PDF Compare
Run the comparison
Click compare and wait while both text layers are read.
Read the summary
Read the summary first: how many lines were added, removed and left identical, and which pages changed.
Review every change
Scroll the difference list (or show everything) to review each change in context.
// PDF COMPARE · ABOUT THIS TOOL
About the PDF Compare
Somewhere between version 3 and version 4 of every important document, a clause changes, a price moves or a paragraph quietly disappears. This PDF compare tool exists for that moment: it reads both versions and produces a plain, ordered list of what the text actually did, additions in one colour, removals in another, so a ten-minute review replaces an anxious evening of side-by-side reading.
The comparison is text-first by design. It ignores the visual noise that makes pixel comparison tools cry wolf, font rendering, image shifts, metadata, and concentrates on wording, the layer where contracts bind, proofs are approved and reports are believed. Changed pages are flagged in the summary so you can jump straight to the pages that need your eyes.
Because everything runs in your browser, the tool is safe for the documents that need comparing most: contracts under negotiation, salary and offer letters, legal drafts, financial statements and manuscripts. No uploads, no accounts, no copies of your files sitting on a stranger's server.
PDF Compare FAQs
It compares the text content of two PDFs, line by line and page by page, and reports three things: lines that were removed from the first file, lines that were added in the second, and pages that are completely identical. That is exactly what you need when reviewing a revised contract, a corrected proof or an updated report: not a vague "the files differ", but the actual sentences that changed.
