iSharePDFCompare PDF Files in Your Browser — Instantly & Privately
Load two PDFs side by side, and see every added, removed, or changed line highlighted in real time — without sending a single byte to a server.
→ Try it free — no sign-upWhether you are reviewing a contract revision, checking that a supplier updated the right clause, or auditing two versions of a technical report, manually reading through pages to spot differences is error-prone and slow. iSharePDF's compare tool processes both documents entirely in your browser using local computation, so your confidential files never leave your machine. You get a clear, colour-coded diff in seconds — free, with no account required for up to 5 comparisons per day.
Why Compare PDFs Locally Instead of Uploading Them?
- Zero upload, zero exposure. Both PDFs are read directly in your browser tab. No file ever reaches a remote server, which means no data breach risk — a critical requirement for contracts, NDAs, financial documents, or medical records.
- Free for everyday use. Up to 5 comparison tasks per day at no cost, with no sign-up. Need unlimited access? iSharePDF Pro costs just 4.99 per month or 39 per year — less than a single cup of coffee.
- Hosted in France, GDPR-compliant by design. iSharePDF infrastructure runs in the EU. Because processing is local, there is no personal data to collect or store in the first place.
- Works everywhere, including as a Chrome extension. Use the web app directly or install the Chrome extension to compare PDFs without even opening a new tab. No installation of desktop software required.
How to Compare Two PDFs in 4 Steps
- Open the tool. Go to /app/tools/compare — no account or sign-up needed to get started.
- Load your first PDF. Click the left panel and select the original document from your device. The file stays on your machine.
- Load your second PDF. Click the right panel and select the revised version you want to compare against.
- Read the diff. iSharePDF highlights additions in green, deletions in red, and modified blocks in amber. Navigate through changes using the arrow controls.
- Export or share if needed. Copy the diff summary, or use iSharePDF Pro to export a marked-up PDF report to share with colleagues.
iSharePDF vs. Other Ways to Compare PDFs
| Method | Your files go to a server? | iSharePDF advantage |
|---|---|---|
| Online converters (Smallpdf, ILovePDF…) | Yes — uploaded to their cloud | 100% local, no upload |
| Adobe Acrobat Pro (desktop) | No — but costs ~180/yr | Free tier + Pro at 39/yr |
| Manual side-by-side reading | No — but slow and error-prone | Instant colour-coded diff |
Ready to Compare Your PDFs in Seconds?
No upload. No account. No waiting. Open the tool, drop in your two files, and get a precise diff right in your browser — free up to 5 times a day, or unlimited with Pro at 4.99/mo.
Open the tool →