Remove unwanted PDF pages
Convert Markdown to a clean PDF, with LaTeX math
Shrink PDFs — lossless or aggressive
Compare two PDFs line-by-line
Fill + save any PDF form
Pull embedded images from PDFs
Merge multiple PDFs into one
Strip the fingerprint your PDF leaves
Add page numbers to any PDF
True redaction — bytes removed, not just covered
Rotate PDF pages with live thumbnails
Inspect digital signatures in PDF files — signer, certificate, signing time, cryptographic validity. All client-side.
Split a PDF or extract specific pages
Pull every word out of a PDF
Convert PDF pages to images
Stamp every page — DRAFT, CONFIDENTIAL, your text
Word + character + sentence stats
Drag thumbnails to rearrange a PDF
Convert screenshots to PDF
ChatDOC
Chat with your documents and click through to the passage behind each answer
ChatPDF
Ask questions of any PDF and jump straight to the cited passage
Explainpaper
Highlight a confusing line in a paper, get a plain-English fix.
Ask questions across your files and see the cited passage behind each answer
Reducto
Document parsing and extraction API built for messy PDFs, tables and forms
Scholarcy
Turns papers into structured flashcards: findings, methods, refs.
Why Is My PDF So Big? It Is Probably a Picture of Text
We built one A4 page both ways and weighed them. As text: 8,256 bytes, with 4,791 searchable characters. The s...
KE
11 Aug
How to Redact a PDF So the Text Is Actually Gone
A black rectangle removes nothing, and the check most people run afterwards returns nothing on a file that is...
PR
9 Aug