When a contract or report goes through a few rounds of edits, spotting what actually changed by eye is slow and error-prone. Compare PDF runs a word-level diff between two versions of a document and highlights every addition and deletion, page by page, entirely in your browser.
How to compare pdf
- 1
Upload the original file
Drag the first version of your document onto the upload area.
- 2
Select Compare PDF
Choose the tool, then upload the second version to compare against.
- 3
Review the highlighted differences
Additions and deletions are marked page by page as you scroll.
- 4
Download the comparison report
Export a copy with the differences marked for sharing.
Why use RealPDFTool for compare pdf
Word-level, not just page-level
See exactly which words changed, not just that a page looks different.
Your files never leave your browser
The comparison runs locally, so neither document is ever uploaded.
Frequently asked questions about compare pdf
Does it compare images or just text?
The comparison works on the text layer of each PDF — it's built for catching wording changes, not pixel-level image differences.
Can I compare a scanned PDF?
Run OCR text on both scans first to give them a text layer, then compare the results.
Is there a page limit?
Comparison runs entirely in your browser, so it's bounded by your device's memory rather than a server-side limit.
Are my documents uploaded anywhere?
No — the comparison happens locally, so neither file ever leaves your device.