29 stories tagged pdf, newest first.
191 points by vardhan1237 | 70 comments
GitHub repository for PaperPilot, a local, zero-cloud pure-Rust PDF engine and AI document copilot with WASM builds and an MCP server.
11 points by patrickg | 1 comments
A blog post by Patrick Gundlach walking through the algorithms behind a typeset page, from page layout down to PDF bytes, using speedata Publisher and boxesandglue.
29 points by cyrillsemah | 8 comments
Landing page for Sygal, a desktop app that converts PDFs, Office files, scans, web pages and YouTube links into Markdown and JSON locally for AI use.
144 points by janpmz | 74 comments
Page for PDF to MP3, a tool that lets users connect their existing OpenAI subscription to convert PDF documents into audiobooks, with a demo video.
![Screenshot of pagedout.institute: Paged Out Issue #8 [pdf]](https://hn.urlbox.com/shots/renders/2026/2/19/aa996558-22ca-40a5-8c3e-b81d629aece9.jpg)
407 points by SteveHawk27 | 61 comments
PDF of Paged Out! issue #8 (February 2026), a free zine of one-page articles on programming, hacking, security, and electronics.
497 points by ComputerGuru | 183 comments
A NeoSmart Technologies blog post on reconstructing original PDFs from raw encoded email attachments in the DoJ's Epstein archive release.
374 points by DuffJohnson | 211 comments
PDF Association article analyzing the released Epstein PDF files forensically, covering file validity, versions, incremental updates, Bates numbering, metadata and photographs.
660 points by rendx | 114 comments
GitHub repository for x-ray, a BSD-licensed Python library from Free Law Project that detects bad or ineffective redactions in PDF documents.
919 points by vinni2 | 713 comments
Guardian news article reporting that redactions in released Epstein files are being undone with simple hacks, with un-redacted text circulating on social media.
586 points by captn3m0 | 289 comments
Kindle Direct Publishing community announcement about new eBook download options for readers, including ePub and PDF for DRM-free titles, coming in 2026.
![Screenshot of mathcs.holycross.edu: Calculus for Mathematicians, Computer Scientists, and Physicists [pdf]](https://hn.urlbox.com/shots/renders/2025/11/23/e229c1d5-fc4e-4c18-b5f1-458787f9acf1.jpg)
332 points by o4c | 70 comments
A free PDF textbook by Andrew D. Hwang, 'Calculus for Mathematicians, Computer Scientists, and Physicists: An Introduction to Abstract Mathematics'.
321 points by mzehrer | 78 comments
GitHub repository for Abogen, an open-source tool that generates audiobooks with synchronized captions from EPUBs, PDFs and text using text-to-speech.
369 points by UglyToad | 199 comments
Blog post by Eliot Jones explaining how PDF parsing should work per the spec, covering headers, cross-reference tables, object offsets and trailers, and its real-world pitfalls.
361 points by charleshan | 89 comments
GitHub repository for KOReader, an open-source ebook reader supporting PDF, DjVu, EPUB, FB2 and more on Kindle, Kobo, PocketBook, Cervantes and Android.
417 points by desgeeko | 53 comments
Documentation page in the pdfsyntax GitHub repo describing a browse feature that renders a PDF file's internal structure as navigable HTML.
1193 points by ThomasRinsma | 211 comments
A PDF file that runs a playable Tetris game using JavaScript and form-field annotations supported by browser PDF engines like PDFium and PDF.js.
465 points by bukacdan | 52 comments
GitHub repository for ripgrep-all (rga), a tool extending ripgrep to search inside PDFs, e-books, Office documents, and archives like zip and tar.gz.
439 points by eigenvalue | 155 comments
GitHub repository for LLM-aided OCR, a Python tool that corrects Tesseract OCR output from scanned PDFs using multi-stage LLM prompts and outputs markdown.
522 points by Olshansky | 74 comments
GitHub repository for diff-pdf, a simple open-source tool for visually comparing two PDF files.
649 points by alexwlchan | 140 comments
Blog post by Alex Chan exploring the claimed maximum page size of PDF documents and creating a PDF with pages larger than Germany.
551 points by sohkamyung | 213 comments
Will Crichton's essay arguing PDF limits modern documents and proposing portable EPUBs as an HTML-based alternative, shown in a prototype EPUB reader.
![Screenshot of tge-data-web.nyc3.digitaloceanspaces.com: Vector Databases: A Technical Primer [pdf]](https://hn.urlbox.com/shots/renders/2024/1/12/cbe02d07-693f-4205-a548-b14e53fbfdec.jpg)
484 points by jide_tracc | 99 comments
A PDF document providing a technical primer on vector databases, shown in a browser PDF viewer that had not yet rendered content.
465 points by alexzeitler | 198 comments
GitHub repository for Stirling-PDF, a locally hosted web application for performing various operations on PDF files such as merging, converting, and OCR.
533 points by sebg | 84 comments
GitHub repository for Marker, a GPL-licensed tool by Vik Paruchuri that converts PDF documents to Markdown quickly and accurately.
550 points by skilled | 123 comments
Reuters news report that Adobe co-founder John Warnock has died at age 82.
451 points by thunderbong | 164 comments
A web app offering in-browser PDF tools such as encrypt, decrypt, optimize, merge, rotate, and page removal without uploading files.
526 points by thunderbong | 173 comments
GitHub repository for DocuSeal, an open-source, self-hostable DocuSign alternative for creating, filling, and signing digital documents.
841 points by ggr2342 | 142 comments
A PDF textbook from Carnegie Mellon introducing mathematical thinking, logic, and proof-writing for beginning university students.
420 points by dataminer | 29 comments
A PDF of François Fleuret's The Little Book of Deep Learning, a short introductory textbook on deep learning.