Compare PDF
Put two PDF versions side by side and spot every difference.
Document 1
Drop your PDF file here
Document 2
Drop your PDF file here
How to use Compare PDF?
- Add two PDF versions you want to check. Use the cleanest version you have, especially for scans or client files.
- Upload the original file and revised file in the correct slots. Take ten seconds here; most PDF mistakes are order, range, or quality mistakes.
- Click Compare PDF and let RashPDF prepare a comparison view or report showing changes.
- Open the result once before sending it. If it looks right, download it or continue with the next PDF tool.
- Finds differences faster than manual review.
- Helps spot changed wording, layout, or missing pages.
- Creates a clearer review workflow for revisions.
File details, settings, and quality checks
A useful result depends on the source file and the choices made before processing. Use these tool-specific checks before you download or share the output.
- Accepted input
- two PDF versions you want to check
- Result
- a comparison view or report showing changes
- Setting to review
- upload the original file and revised file in the correct slots
- Best-result check
- Use the earlier version as the original and the newer version as the revised file to keep changes easy to read. Comparison quality depends on whether text is selectable and how similar the two layouts are.
- Processing and privacy
- This conversion may use the RashPDF conversion service for advanced processing, and the result is returned to your browser when it is ready.
Once the result looks right, you can download the comparison, edit the revised PDF, or share the final approved version. Keep the source file until the downloaded version has opened correctly.
Frequently Asked Questions
How do I compare two PDF files?
Upload your original and revised PDFs. The tool highlights all differences in a side-by-side view.
What types of differences are detected?
Text additions, deletions, formatting changes, and image differences are all detected.
How are differences displayed?
Additions are in green and deletions in red, making changes immediately visible.
Can I download the comparison result?
Yes. Download an annotated comparison PDF showing all detected differences.
Does it work for scanned PDFs?
It works but with lower accuracy. Comparison is text-based, so scanned PDF accuracy depends on OCR quality.
Is it free?
Yes. PDF comparison is completely free.
Who usually needs Compare PDF?
Compare PDF is most useful for legal reviewers, editors checking revisions, and business teams approving reports. It is for everyday document work: fix the file, check the result, and move on without opening a heavy desktop app.
What should I check before using Compare PDF?
Make sure two PDF versions you want to check is the final version you actually want to process. For private, legal, financial, or client files, check the output before you forward it.
Which setting matters most?
Most mistakes happen when users skip this part: upload the original file and revised file in the correct slots. Review page order, page range, orientation, and quality before starting the job.
Will Compare PDF change my original file?
No. RashPDF creates a comparison view or report showing changes as a new file. Your original stays where it is unless you decide to replace it yourself.
How do I get the best result from Compare PDF?
Use the earlier version as the original and the newer version as the revised file to keep changes easy to read. Comparison quality depends on whether text is selectable and how similar the two layouts are. For anything important, open the downloaded file once before submitting, printing, archiving, or forwarding it.
Can I use the output with other RashPDF tools?
Yes. After using Compare PDF, you can download the comparison, edit the revised PDF, or share the final approved version. This conversion may use the RashPDF conversion service for advanced processing, and the result is returned to your browser when it is ready.
About Compare PDF
Put two PDF versions side by side and spot every difference. Free online PDF comparison tool — highlights changed text, images, and formatting.
Start with two PDF versions you want to check, then upload the original file and revised file in the correct slots. That one review step matters more than it looks: wrong page order, missed ranges, sideways scans, and low-quality source files are the usual reasons people have to redo a PDF job.
This conversion may use the RashPDF conversion service for advanced processing, and the result is returned to your browser when it is ready. RashPDF returns a comparison view or report showing changes, so your original file is not overwritten. Comparison quality depends on whether text is selectable and how similar the two layouts are.
Afterward, open the downloaded file once. If it is ready, you can download the comparison, edit the revised PDF, or share the final approved version. This keeps the workflow natural: fix the document first, polish it second, and share it only after the final check.
Step-by-step guide
Compare Two PDF Versions Before Approval