PDF-Diff - Visualize any differences between two PDFs

In plain words

PDF-Diff is a tool that compares two PDF files and displays their differences visually. Users can upload or select two PDFs to see what has changed between versions, making it useful for document review, version control, and quality assurance. The tool highlights modifications across pages, helping anyone who needs to track changes in PDF documents quickly and accurately.

written from the facts on this page · September 2026

• 
  Diffchecker 2.02020 · diffchecker.com · ▲153

  Check the differences between two text files, images or PDFs

• PD
  PDF Differ2023 · pdfdiffer.com · ▲62
• DI
  Diff.io2015 · diff.io · ▲194
• AN
  A new way to diff websites2015 · diffd.com · ▲46
• 
  PDF Differ2023 · ▲66

  PDF comparison tool for creatives

• VD
  Visual diff for 3D printable models2012 · cubehero.com · ▲127

• 
  SimCity, but with Permits▲867

  A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.

  Life & fun · 21h ago · permit.petercai.com

• IV
  I've been paying for a rural Tanzanian's education for 10 years▲778

  Life & fun · 13d ago · tanzaniaeducationproject.org

• 
  Bigwords.page – Turn any screen into a sign. The URL is the app▲728

  Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.

  Life & fun · 14d ago · bigwords.page

• 
  Guitoro, a virtual guitar you strum with your keyboard▲573

  Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.

  Life & fun · 8d ago · guitoro.com

• 
  See *almost* any carriers phone settings▲432

  Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.

  Life & fun · 12d ago · carrierexplode.com

• 
  The whole Solar System and every tracked satellite, live in the browser▲407

  Life & fun · 22d ago · space.bl2.net

• 
  Xnapper▲1,517

  Take beautiful screenshots instantly

  Work · 2022 · xnapper.com

• 
  Gamma▲1,169

  Auto-generate decks, docs & social posts inside any workflow

  Work · 2022 · gamma.app

• 
  Threado▲921

  The command center for community builders

  Life & fun · 2022

• 
  Remotebase▲744

  Build remote engineering teams in 24 hours

  Dev tools · 2022 · remotebase.com

• 
  DhiWise 2.0▲740

  Convert Figma designs into Flutter 3.0 & React code rapidly

  Dev tools · 2022 · dhiwise.com

• PA
  Pornpen.ai – AI-Generated Porn▲711

  Hey HN, I've been working on https://pornpen.ai, a site for generating adult images. Please only visit the site if you are 18+ and willing to look at NSFW images. This site is an experiment using newer text-to-image models. I explicitly removed the ability to specify custom text to avoid harmful imagery from being generated. New tags will be added once the prompt-engineering algorithm is fine-tuned further. If the servers are overloaded, take a look at the feed and search pages to look through past results. For comments/suggestions/feedback please visit…

  AI · 2022 · pornpen.ai