Upload two versions of a document and see exactly what changed between them. Every added line, deleted paragraph, and formatting edit is highlighted side by side, so you never have to read both files line by line to catch what moved.
Most free comparison tools only tell you that two files are different, not where or why. You end up scrolling through both documents yourself to find the actual change, which defeats the purpose of using a tool at all.
I Love PDF highlights every difference directly on the page, text edits, added or removed pages, and formatting changes, so the comparison itself does the work instead of just confirming something changed.
Differences are marked directly on the page where they occur. Added text, removed text, and edited sections each get their own visual marker, so you can tell at a glance what kind of change you’re looking at instead of just that something is different.
Most free comparison tools only check text. I Love PDF compares text, images, and page layout together, so a moved image, a resized graphic, a shifted table, or a changed logo is flagged just as reliably as an edited sentence. This matters for design documents, reports with charts, marketing materials, and any file where visual changes carry as much weight as wording.
Choose whether you want to see only text changes, only formatting changes, or both together. This matters when you’re reviewing a contract redline and only care about substantive edits, not font or spacing differences introduced by re-saving the file.
Before you dig into line-by-line differences, get a summary of which pages changed at all. This lets you jump straight to the sections that need review in a long document instead of opening every page.
Download a single file showing both versions with changes marked, rather than two separate reports you have to cross-reference yourself.
Dedicated redline tools built for law firms exist for a reason: reviewing a revised contract by eye is slow and error-prone, and a missed clause change can be costly. I Love PDF gives you the core of that same workflow without a paid subscription or account setup.
Upload the original contract and the revised version, and every clause edit, added paragraph, and deleted line is marked automatically. Filter the view to show only substantive text changes if you don’t want formatting noise from a re-save cluttering the result. For quick contract turnarounds, one-off NDA reviews, or checking a single amended clause, this covers the same ground as a paid legal redline tool for the vast majority of cases.
If your firm compares documents daily at high volume, a dedicated paid tool may still make sense. For everyone else, comparing occasionally, checking a single revised agreement, or reviewing a client’s redline before a call, this is enough.
Lawyers and paralegals comparing a revised contract against the original can catch every clause change instantly, rather than reading both versions side by side and hoping nothing was missed.
Compare two versions of a report, proposal, or plan to see exactly what a colleague or client changed before you approve the next draft.
Compare a revised paper or essay against an earlier draft to see what a co-author or student changed, without re-reading the entire document.
Organizations that update internal policies regularly can confirm exactly what changed between versions, which matters for compliance records.
Compare a PDF export of updated web copy against the previous version to confirm only the intended sections changed.
Confirm that a resubmitted form or official document matches what was expected, with no unauthorized edits slipped in.
Compare two versions of a brochure, presentation, or report layout to catch a moved image, resized logo, or shifted table, changes that a text-only comparison tool would miss entirely.
Yes. Every file uploaded to I Love PDF is transferred using SSL encryption, the same standard used by banks and financial institutions. Both files are processed on secure servers and automatically deleted once your comparison result is ready. We do not store, read, share, or sell any content you upload.
This matters most for confidential documents like contracts, financial reports, or legal filings, where the two versions being compared may both contain sensitive information. Neither file is kept longer than necessary to generate your result.
If either file is password protected, use Unlock PDF to remove the protection first, then upload both versions here.
Yes, comparing two PDF files is completely free with no signup required.
No, comparisons run between two files at a time. To review multiple versions, compare them in pairs.
Yes. Both files are encrypted during upload and processing, then automatically deleted from our servers once your comparison is ready.
No. There is no charge to compare files, and there’s no limit on how many comparisons you can run.
Yes. It works in any mobile browser on iPhone and Android, no app required.
There is no file size limit. Larger documents may take slightly longer to process, but the comparison works the same way regardless of length.
Yes. The output is a standard PDF you can download and print like any other document.
Scanned documents are compared as images rather than text, so exact wording differences may not be detected the same way as in a text-based PDF. For best results with scanned pages, run them through OCR PDF first to convert the content to searchable text.
Yes. Compare PDF checks text, images, and page layout together. Changes such as moved images, resized graphics, shifted tables, and modified text are all detected.
This tool compares PDF files only. If your document is in Microsoft Word format, convert it to PDF first, then upload both PDF versions for comparison.
Files are securely uploaded and processed on our servers using encrypted connections. Once the comparison is complete, they are automatically deleted, allowing you to use the tool from any browser without installing desktop software.
Reading two documents side by side to spot differences works for a one-page letter. It does not work for a forty-page contract or a report with multiple revision rounds, where a single changed number or deleted clause is easy to miss.
Compare PDF finds every difference automatically and marks it directly on the page, so review time drops from an hour of careful reading to a few minutes of checking flagged changes. This is especially valuable for legal and business documents, where missing a single edit can have real consequences.
combine the reviewed file with a cover page or appendix
permanently remove sensitive text before sharing a comparison result
secure the comparison output before sending it
remove password protection before comparing a locked file
convert scanned pages to searchable text before comparing
