Compare two PDFs, and see exactly what changed in the text.
Drop the old and the new version of a contract, a course or any other document. The tool shows every word that was added or removed, page by page, and makes a report you can keep – all in your browser.
Drop one or more PDFs here, or click to choose
Tables become real cells, numbers become numbers
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Drop one or more PDFs here, or click to choose
Each file is split the same way
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
e.g. 3, 7 — leave empty to split every page separately
Drop one or more PDFs here, or click to choose
Applied to every page, or only to the pages you enter below
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Drop one or more PDFs here, or click to choose
A page number on every page, bottom centre unless you choose another position
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Drop one or more PDFs here, or click to choose
Each file has the same pages removed
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
e.g. 2, 5-7
Drop one or more PDFs here, or click to choose
The same pages are taken from each file
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
e.g. 1, 3-5
Drop one or more PDFs here, or click to choose
The watermark is added to every page
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
e.g. CONFIDENTIAL
A PNG with a transparent background works best. Up to 10 MB.
Drop JPG or PNG images here, or click to choose
All images go into one PDF – change the order below if needed
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Drop one or more PDFs here, or click to choose
Every page becomes one JPG image
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
e.g. 1, 3-5 — leave empty to convert every page
Drop one or more PDFs here, or click to choose
Every file gets the same password
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Remember it well: nobody can recover a forgotten password, not even us. It stays in your browser.
Drop one or more PDFs here, or click to choose
The same password is tried on every file
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Leave empty for a file that opens without a password but blocks printing or copying.
Drop one or more PDFs here, or click to choose
Your signature goes on every file at the same place
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Drag your signature to the right place
Create your signature above and it appears here.
Tip: click the signature and move it with the arrow keys (hold Shift for bigger steps).
Drop one or more PDFs here, or click to choose
Several pages of your PDF on each sheet, ready to print
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Drop one or more PDFs here, or click to choose
Cut margins off every page, or trim the white edges
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Preview: the dashed box is what stays
Drop one or more PDFs here, or click to choose
See what the file says about itself, then remove it
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Leave a field empty to remove it. Dates and software names are always removed.
Drop one or more PDFs here, or click to choose
The text of your PDF as a plain .txt file
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Drop one or more PDFs here, or click to choose
Every picture in your PDF as a separate file
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Drop one or more PDFs here, or click to choose
See every page, then put them in the right order
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Drop one or more PDFs here, or click to choose
Scanned pages get an invisible, searchable text layer
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Takes a few seconds per page; a long scan can take minutes.
Drop a PDF here, or click to choose
Draw black boxes over what must disappear
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Pages with a black box become an image: text there can no longer be selected or searched. Pages without a box stay as they are.
Draw a box over everything that must disappear
Drag with your mouse or finger to draw a box. To remove a box: click it, or reach it with the Tab key, and press Delete.
Drop one or more PDFs here, or click to choose
Form fields and comments become part of the page
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Drop a PDF here, or click to choose
Fill in its form fields or add text to a page
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Form fields
Add text: click on the page where it should go
Tip: select a box with Tab or a click and move it with the arrow keys (hold Shift for bigger steps); Delete removes it.
Drop 2 PDFs here (old and new), or click to choose
Text differences, word by word, page by page
Guideline: up to 50 MB works well on most devices; for larger files a computer is more reliable than a phone. Check for yourself that your files aren't uploaded
Add 2 PDFs: first the old version, then the new one.
removed text added text
How to compare two PDFs
Choose the two PDFs
First the old version, then the new one. Your files aren't uploaded: your browser reads them itself.
Compare
The text of both files is read and compared word by word over the whole document, also when pages were added or removed.
View and download
Every change is shown per page: removed text struck through, added text underlined. Download the report to keep it.
Tips for comparing PDFs
Old first, new second
The first file is the old version, the second the new one. Removed means it was in the old version and is gone from the new one. Wrong way round? Use Swap order.
Jump from change to change
Use Previous change and Next change. Each heading gives the page of the new version, and the old page too when the text moved.
Keep the report
The report is a single HTML file without scripts. It opens in any browser, and you can print it or save it as a PDF from there.
Honest about the limits
Only the text is compared, not layout, images or formatting. Scans without a text layer cannot be compared (the comparison does no OCR); add a text layer first with OCR PDF. A strongly changed layout, such as new columns, can show extra differences.
Questions about comparing PDFs
How do I compare two PDFs?
Drop the old version and then the new version into the tool above and click Compare PDFs. The changes appear below the tool, page by page, and you can download them as a report.
What counts as a change?
Every word that was added, removed or replaced. Punctuation and capital letters count, extra spaces and line breaks do not. A word split with a hyphen at the end of a line is read as one word.
Are images, layout or formatting compared?
No. The tool compares the text only. A changed picture, colour, font or position is not shown. If the layout changed a lot, text that moved can show up as removed and added.
Can it compare scanned PDFs?
Only if the scan has a text layer. A scan without one is just a picture: the tool then says it found no text, because it does not do OCR itself. You can add a text layer first with OCR PDF.
What does the report look like?
One HTML file with the same changes as on screen: a summary, then every page with changes, with removed text struck through (−) and added text underlined (+). It has no scripts and loads nothing from the internet.
Are my files uploaded?
No. Both PDFs are read and compared in your browser, so your files aren't uploaded. A password-protected PDF works too: the tool asks for the password.
General questions about privacy, cost and file size are answered on the homepage. Stuck? See the help page.
Important to know
Check the result before you print or share it. Full terms of use.