Compare PDF files online in seconds
Upload two PDFs and compare text changes side by side or in an overlay view. Spot every added, deleted, and replaced line right in your browser.
Supports PDF, DOCX, DOC, PPTX, PPT, PNG, JPG, HEIC, HEIF, MD
Files stay private
This made everything so much easier and better! Thank you!
Leo ContiTrustpilot review
When to use a PDF comparison tool
Checking what changed between two drafts
Upload both versions and see every added, deleted, or edited line at a glance.
Reviewing a contract before you sign
Compare the final PDF against the draft to catch any last-minute changes.
Verifying a document you got back
Make sure the returned file matches what you sent, with no silent edits.
Tracking revisions across versions
Compare each pair of PDF documents to keep a clear record of what was updated.
Start editing your PDF
All PDF tools in one place
No installs, no app-switching — works on any device
More tools
Convert Word to PDF
Transform DOC/DOCX to PDF. Preserve formatting.
Convert Excel to PDF
Turn XLS & XLSX into a clean, shareable PDF. Formatting intact.
Convert Markdown to PDF
Paste or upload your .md file and get a formatted PDF in seconds. Tables and code blocks included.
Convert PNG to PDF
Combine multiple PNG images into one PDF. Resolution maintained.
Convert PDF to PNG
Split PDF pages into separate PNGs. Full resolution preserved.
Convert JPG to PDF
Merge JPEG photos into a single PDF file without losing quality.
Convert HEIC to PDF
Turn iPhone HEIC photos into a shareable PDF. Opens on any device.
Convert PDF to JPG
Turn PDF pages into separate JPEG images. Ready to share or upload.
PDF to Excel
Turn PDF tables into editable spreadsheets ready to use in Excel or Google Sheets.
PDF to CSV
Extract table data from PDFs into clean CSV files ready for spreadsheets and data analysis.
PDF to PowerPoint
Get editable PPT & PPTX slides. Keep fonts & layout.
Convert PowerPoint to PDF
Turn PPT & PPTX into a share-ready PDF. Opens on any device.
Bank Statement to Excel
Convert PDF bank statements to editable Excel or CSV files for accounting and analysis.
Compress
Reduce PDF file size with 3 compression levels.
Change Text
Edit PDF text directly. Change font, size, color.
Add Image
Add logos, photos & graphics to PDFs. Adjust size and position.
Split File
Split PDF into multiple files. Choose any page to divide.
Rotate Pages
Adjust PDF orientation easily. Choose single, multiple, or all pages.
Rearrange Pages
Drag & drop to reorganize. Delete, duplicate, rotate pages.
Annotate
Mark up PDFs: draw, highlight, erase. Multiple colors & line widths.
Add Page Numbers
Number pages automatically. Choose position, format, margins.
Bates Numbering
Add Bates numbers automatically. Choose prefix, suffix, and numbering style.
Extract Pages
Select the pages you need and save them as a new PDF.
Protect PDF
Secure PDF from unauthorized use with a password.
Unlock PDF
Remove passwords and restrictions with just a few clicks.
Chat with PDF
Ask AI any questions about your PDF.
PDF Summarizer
Summarize PDFs into key points with AI.
Generate PDF
Describe a doc you need and get a formatted PDF.
How to compare two PDF files
1Upload your PDF files
2Choose side-by-side text changes or overlay comparison view
3Review all the highlighted differences between your PDF files
Ready when you are.
Why people prefer pdf.net
Simple and easy for daily use
Our online PDF editor features a clean, intuitive, and user-friendly interface designed for amateurs and professionals alike. You can navigate it with ease and edit your PDF file, even if you’ve never done it before.
All‑in‑one PDF editor
Our editor offers a robust and comprehensive set of features that allow you to customize your documents, merge them, sign them, and much more. No need to transfer your files between several applications anymore.
Keeping formatting without issues
No more messy documents and inconsistent formatting across multiple systems or devices. Our online PDF editor is cross-platform compatible and maintains uniformity whether you’re using a PC, MacOS, smartphone, or tablet.
People all over the world trust pdf.net to edit their docs
I can handle contracts, invoices, and client documents without paying for expensive software or hiring someone to do it. The browser-based setup means I can work from the office, home, or even my phone when I'm meeting with clients. Processing is quick enough that I'm not wasting time, and the tools I use regularly (merging proposals, compressing files, converting documents) work consistently.
Anna Y.G2 review
I can handle contracts, invoices, and client documents without paying for expensive software or hiring someone to do it. The browser-based setup means I can work from the office, home, or even my phone when I'm meeting with clients. Processing is quick enough that I'm not wasting time, and the tools I use regularly (merging proposals, compressing files, converting documents) work consistently.
Anna Y.G2 review
It does the task for the available features of this platform very efficiently. Editing and organizing of pdf files can be done easy and fast on this platform.
Konjengbam Mitindra SinghG2 review
That is what makes PDF.net stand out for me. I do not have to scratch my head or waste time figuring things out when I am under pressure. Everything feels obvious. It just flows.
AbeChallahAppSumo review
Easy to use & does exactly what it says: split pdfs. Super easy to download and very intuitive to use.
MonicaTrustpilot review
Frequently asked questions
- Can I compare more than two files?
- No, you cannot compare more than two files at once. If you have three PDFs, compare each pair separately, for example File A with File B, then File A with File C. Our visual PDF comparison tool makes it easy to compare files as often as you need.
- What file formats are supported?
- This tool compares PDF files, Word documents (DOC, DOCX), PowerPoint files (PPT, PPTX), and Markdown files (MD). You can also compare images (PNG, JPG, HEIC, and HEIF) in the overlay view — they are converted to PDF before comparison.
- Is the PDF comparison tool free?
- Yes. You can upload two documents and compare them for free. Downloading the edited file is what requires a subscription.
- Can I compare a PDF with a Word document?
- Yes. Our diff checker helps you compare documents even if they are in different formats, for example a PDF against a Word document or a PowerPoint presentation. For text-based files, both the Text changes and the overlay views are available. If one of the files is an image, use the overlay view: text comparison needs a text layer, which images do not have.
- Can I compare a PDF with an image?
- Yes. Use the overlay view: it compares your files pixel by pixel and shows every visual difference.
- Can I compare scanned PDFs?
- Yes, in the overlay view. Scanned pages are compared pixel by pixel, so you can spot visual differences between two scans. Text comparison is not available for scans, as they do not contain a text layer.
- What types of changes can this PDF difference checker detect?
- It detects added, deleted, and replaced text and helps you spot layout differences in overlay mode. As a reliable PDF revision tracker, it helps you catch every edit.
- Which browsers and devices are supported?
- Chrome, Firefox, Edge, and Safari on desktops, laptops, tablets, and phones. You can compare PDF files anytime and anywhere.
- How do I view two different PDFs side by side?
- Right after uploading your documents, you will see them in a side-by-side comparison view. This mode shows both documents next to each other with synchronized scrolling, so you can compare two PDF documents for differences line by line.
- Are my files safe?
- Yes. Our PDF comparison tool uses encrypted connections to keep your files private.