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 any file and trace every answer to the page
ChatPDF
Chat with any PDF document
Explainpaper
Highlight a confusing line in a paper, get a plain-English fix.
Cited answers pulled straight from your PDFs
Reducto
Document-parsing API tuned 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