Processed locally, never uploaded
Merge PDF
Combine several PDFs into one file, in the order shown below (drag to reorder).
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Split / Extract
Extract page ranges, split every page into its own file, split every N pages, or into equal parts.
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Organize pages
Delete, rotate and drag pages right in the thumbnail grid, then export a new PDF.
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Image to PDF
Turn JPG / PNG / WebP images into a single PDF, in list order, with optional page size and margin.
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PDF to image
Render every page to JPG or PNG. Choose the quality; files download page by page.
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Watermark
Stamp a text or image watermark on every page; adjust size, colour, opacity, angle and position.
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Protect / Unlock
Set an open password for a PDF, or remove a password you already know. Passwords never leave your device.
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Page numbers
Add page numbers in bulk; position, style, first number and font size are all adjustable.
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Crop pages
Trim the edges by setting a margin on each side - handy for scanner borders or a consistent page margin.
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Extract images
Export the images embedded in a PDF, one file each, named in page order.
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Compress PDF
Two ways to shrink a file: rewrite the structure (lossless, limited gain) or rasterise every page (great for scans, but the text stops being selectable).
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Repair PDF
Rebuild a damaged cross-reference table and drop redundant objects so a file that will not open becomes usable again.
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Compare PDF
Compare the text of two PDFs and list every added, removed and changed line. Scans have no text layer and cannot be compared.
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Sign PDF
Draw a signature and place it on a chosen page, with adjustable position and size. This is an image signature, not a digital one.
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Fill forms
Read the form fields already present in a PDF, fill them in and export. Files without fields cannot use this tool.
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Add a PDF and its fillable fields will be listed here.
Overlay / Stamp
Lay one PDF (letterhead, background, stamp page) over your document - behind or in front of the content, with the last page repeating across long files.
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Redact
Cover confidential text and images with boxes or a brush. On export every page is rasterised, so the covered content is permanently removed and cannot be recovered.
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Add a PDF and its pages will appear here for redaction.
This cannot be undone: after export the covered content cannot be recovered by any means.
Compare the text of two PDFs and list every added, removed and changed line. Scans have no text layer and cannot be compared.
All processing happens locally in your browser. Your files are never uploaded to any server.
Compare the text of two PDFs and list every added, removed and changed line - handy for reviewing edits or verifying that a revised draft and a printed version match.
Comparison works on the text layer only: scans have no text layer and cannot be compared, and image or layout changes are not shown. Documents stay on your device - all processing is local.
How to use it
- Add two PDFs - the first is the old version, the second the new one.
- Click Start.
- Review the line-by-line differences: additions, deletions and changes are marked distinctly.
Frequently asked questions
- Can scanned PDFs be compared?
- No. Scans have no text layer; only extractable text can be compared.
- Are image and layout changes visible?
- No. Only the text layer is compared; image, font and layout changes are out of scope.
- Are my files uploaded to a server?
- No. Everything runs in your browser and there is no upload endpoint, so the server never sees your content.
- How large a file can I use?
- Stay under about 100 MB and a few thousand pages. Speed and memory depend on your own device.
- Is it free? Do I need an account?
- It is completely free with no usage limit, and no sign-up or login is required.
- Does it work on phones?
- Yes, the layout is responsive. Large files and complex edits are easier on a desktop.
- Which browsers are supported?
- Any modern browser: Chrome, Edge, Firefox, Safari and their mobile versions.
- Does it work with scanned PDFs?
- Yes for page-level operations, which do not need a text layer. There is no OCR, so text cannot be pulled out of a scan.
Client-side only · No sign-up · Local processing · Files never uploaded