PDF Tools

What it does

PDF Tools is a privacy-first suite of 38 online utilities for merging, splitting, compressing, converting, organizing, signing, redacting, OCR, and AI-assisted document work. Most tools run directly in the browser, no signup is required to start, and completed files have no watermark. Heavier workflows use clearly labeled temporary server processing. Pro costs $4/month.

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  PDF.ai Free tools2023 · ▲230

  Free PDF tools, merge, split, compress, compress, rotate etc

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  PDFCraft26d ago · ▲1

  Privacy-first PDF tools to merge, edit & convert files

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  One Page PDF Converter28d ago · onepagepdfconverter.com · ▲4

  Free PDF tools that stay private, now with 3 premium tools

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  PDF Utility19d ago · ▲2

  Make every PDF task feel effortless

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  ToolMaster9d ago · freetoolmaster.online · ▲1

  34+ PDF tools that never leave your browser

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  Free PDF Tools26d ago · ▲2

  Free PDF tools like compress, merge, split and reorder.

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  Clipto MCP▲640

  Let agents source clips from terabytes of your local video

  Work · 18d ago · clipto.com

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  HyNote for Mac▲383

  Free local transcription that is 100% Private

  Work · 17d ago · hynote.ai

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  VoiceOS App Store▲330

  The app store for voice native apps that lives in your notch

  Work · 28d ago · voiceos.com

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  Scrimba Explain▲325

  Ask any question, get a video back instantly

  Work · 24d ago · scrimba.com

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  The New Calendly▲211

  Handle all of the work before, during, and after meetings

  Work · 17d ago · calendly.com

• TL
  The load-bearing vocabulary of Claude▲703

  Life & fun · 9d ago · louisabraham.github.io

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  Hey Noah▲641

  A proactive AI executive assistant for founders

  AI · Aug 2026 · heynoah.io

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  Clipto MCP▲640

  Let agents source clips from terabytes of your local video

  Work · 18d ago · clipto.com

• SA
  Simple algorithm and color space to generate diverse skin tones▲627

  Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…

  Life & fun · Aug 2026 · toneyalexander.github.io

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  AdAnt AI▲608

  Claude for viral, high-converting social ads

  AI · Aug 2026

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  I trained a 125M model to autocomplete piano on-device▲598

  I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.

  AI · 16d ago · simedw.com