Edit & secure PDF
This is the site's widest category: everything that changes PDF page content, protects it, or edits it — size compression, password protection, electronic signing, watermarks, numbering, cropping, repair, extracting text from scans (OCR), and specialized tools like grayscale conversion, redaction, and file comparison.
Some of these tools inherently handle sensitive data (passwords, signatures, confidential information being hidden) — which is why it matters even more that all processing happens locally in your browser with no upload to any server. The Redact tool specifically removes text from the file for real, not just drawing a black box over it like cheaper tools do.
Compress PDF
Reduce a PDF's file size while keeping acceptable quality.
Watermark PDF
Add a text or image watermark to your PDF pages.
Page numbers
Add page numbers to a PDF in various positions.
Sign PDF
Sign PDF files electronically by drawing your signature.
Edit PDF
Add text on top of a PDF's pages.
Protect PDF
Add a password to encrypt and protect a PDF file.
Unlock PDF
Remove the password from a PDF you are allowed to open.
Crop PDF
Trim the margins of PDF pages or change their size.
Repair PDF
Attempt to repair damaged or corrupted PDF files.
OCR — text from scan
Extract selectable text from a scanned PDF or image (Arabic supported).
PDF to grayscale
Convert a PDF's pages to grayscale, ready for black-and-white printing.
Flatten PDF
Turn interactive PDF form fields into permanent, non-editable content.
Edit PDF metadata
Edit the title, author and keywords, or clear all metadata at once.
Header & footer
Add a custom header and footer line to every PDF page.
Bates numbering
Add sequential legal Bates numbering with a prefix and zero-padding.
N-up PDF
Lay 2, 4, 6 or 9 pages onto each printed sheet to save paper.
Redact PDF
Permanently remove every occurrence of a given text from a PDF and cover it with a black box.
Fill PDF form
Fill in a PDF's interactive form fields directly, then download it.
Compare PDF
Compare two versions of a PDF page by page and highlight the differences.
Resize PDF pages
Resize PDF pages to A4, Letter, or Legal.
Remove PDF annotations
Strip comments, notes, and highlights from a PDF.
PDF overlay
Stamp a PDF (letterhead or seal) over every page of another file.
Deskew PDF
Straighten skewed scanned pages automatically or by a manual angle.
Frequently asked questions
What's the difference between a watermark and password protection?+
A watermark is a visible label (like "CONFIDENTIAL") that stays visible even to whoever opens the file, while password protection prevents opening the file at all without knowing it.
Does the Redact tool actually remove the text?+
Yes, the text is removed from the page content beneath the black box, so it can't be recovered by selecting or copying — unlike other tools that only cover it visually.
When do I use OCR instead of the regular PDF to text conversion?+
If your file is scanned images with no real text layer, the regular PDF to text tool will output an empty file — use OCR, which recognizes characters inside the images themselves.