Compare PDF
Place two versions of a PDF side by side to spot the differences.
How to compare two versions of a PDF online
Upload both files
Drag the original PDF and the modified version into their respective slots, or click to select them from your computer.
Click Compare
The tool analyzes both documents page by page to detect differences between them.
Review the highlighted differences
You'll see both versions side by side, plus a third image with changes highlighted in red, so you can spot what's changed at a glance.
Why compare PDFs on PDFDocks?
Comparing two PDF versions—contracts, reports, design iterations—to spot differences manually is tedious and error-prone. PDFDocks compares PDFs side-by-side, highlighting differences visually so you see exactly what changed.
How does comparison work?
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PDFDocks displays two PDFs side-by-side and visually highlights added, removed, or modified content.
Can I compare any two PDFs?
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Yes. Upload any two PDFs, and PDFDocks identifies differences.
Will differences be clearly marked?
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Yes. Changes are highlighted in contrasting colors for easy visibility.
Is my PDF data private?
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Completely. All comparison happens locally in your browser.
How accurate is the comparison?
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Very accurate for text and most visual elements. Complex or artistic differences might need manual review.
Can I export comparison results?
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You can screenshot or print the comparison view from your browser.
Tools
Merge PDF
Combine several PDFs into one file, in any order you like.
Split PDF
Extract specific pages or split your PDF into ranges.
Rotate PDF
Rotate the pages you need, one by one or all at once.
Compress PDF
Reduce the file size by re-optimizing its content.
PDF to images
Convert every page into a high-quality PNG image.
Images to PDF
Combine your photos or images into a single PDF document.
Watermark
Add overlay text to every page of your PDF.
Protect PDF
Add a password to restrict access to the file.
Unlock PDF
Remove the password from a PDF if you know it.
Remove pages
Delete the pages you don't need from your PDF document.
Extract pages
Select and save only the pages you need.
Reorder PDF
Freely reorganize, move or rearrange the pages in your document.
Crop PDF
Remove margins or adjust the visible area of the page.
Page numbers
Add page numbering with custom position, style and font.
Fill PDF forms
Detect fields and fill in existing PDF forms.
Sign PDF
Draw your signature and stamp it onto any page of the document.
Scan to PDF
Capture documents from your phone and send them straight into a PDF.
OCR PDF
Turn scanned PDFs into documents with selectable, searchable text.
PDF to Markdown
Extract your PDF's content into editable Markdown text.
Word to PDF
Convert Word (.docx) documents into PDF format.
Excel to PDF
Turn Excel spreadsheets (.xlsx) into PDF documents.
Redact PDF
Permanently cover up text or graphics containing sensitive information.
Repair PDF
Attempt to recover and fix damaged or corrupted PDF files.
JPG to PDF
Convert one or several JPG photos into a single PDF document.
PNG to PDF
Convert one or several PNG images into a single PDF document.
PDF to JPG
Convert every page of your PDF into a JPG image.
PDF to PNG
Convert every page of your PDF into a high-quality PNG image.
WEBP to PDF
Convert one or more WEBP images into a single PDF document.
PDF to WEBP
Convert each page of your PDF into a lightweight, high-quality WEBP image.
PDF to Word
Extract text from your PDF into an editable Word document (.docx).
PDF to Excel
Extract text and tables from your PDF into an Excel spreadsheet (.xlsx).
HEIC to PDF
Convert one or multiple HEIC photos (iPhone format) into a single PDF document.
EML to PDF
Convert an email (.eml) into a PDF document, including sender, recipient, subject, and message body.
MHT/MHTML to PDF
Convert a web page saved in MHT or MHTML format into a PDF document.
