Utility Stones

What it does

The main constraint I set: nothing leaves the browser. No file uploads, no server, no account. PDF merge, image processing, OCR, video-to-GIF — all done via WebAssembly or native browser APIs client-side. Tech behind some of the tools: * PDF operations → pdf-lib + custom worker * Image/video processing → Canvas API + ffmpeg.wasm * OCR → Tesseract.js * QR generation → client-side JS library * Remove background → runs locally in-browser * etc

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  All-in-One Utility ToolsJun 2026 · utilitytools.in · ▲3

  200+ Free Online Tools for PDF, Images, Text & More

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  ConvertKoro26d ago · convertkoro.com · ▲3

  Free PDF & image tools that never upload your files

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  SafePaperApr 2026 · safepaper.app · ▲3

  Private PDF Hub & Tools in Your Browser

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  I Have A Tool For That5d ago · ihaveatoolforthat.com · ▲2

  90+ browser tools. No upload. Files never leave your device.

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  AlteredIdeaJun 2026 · alteredidea.com · ▲3

  Free browser tools that never upload your files

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  SmartToolsHubMay 2026 · smarttoolshub.tech · ▲2

  Free, browser-based PDF toolkit. No uploads, no limits.

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  Dograh▲592

  The open source VAPI alternative

  Dev tools · 26d ago · dograh.com

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  Meridian▲530

  Don't let your work go unnoticed. Get promoted!

  Dev tools · 21d ago · meridiona.com

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  x1▲516

  Lovable for iPhone apps go from idea to App Store

  Dev tools · 12d ago · x1.new

• 
  Open-Source eInk Bike Computer▲408

  OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.

  Dev tools · 2d ago · opentrailpaper.com

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  The GTM Co-Founder▲402

  Open-source GTM skills for technical founders

  Dev tools · 30d ago · gtmcofounder.com

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  Nuphos▲380

  The AI-Native DevOps Workspace.

  Dev tools · 25d ago · nuphos.ai

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  Brila▲1,367

  One-page websites from real Google Maps reviews

  AI · Apr 2026 · brila.ai

• AG
  A game where you build a GPU▲964

  Thought the resources for GPU arch were lacking, so here we are

  Life & fun · Apr 2026 · jaso1024.com

• IB
  I built a tiny LLM to demystify how language models work▲915

  Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.

  AI · Apr 2026 · github.com

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  Fathom 3.0▲803

  AI meeting notes: now bot-free, in ChatGPT & Claude + more

  AI · Apr 2026 · fathom.ai

• BC
  Brutalist Concrete Laptop Stand (2024)▲786

  Life & fun · Apr 2026 · sam-burns.com

• IB
  I built a frontpage for personal blogs▲783

  With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.

  AI · Apr 2026 · text.blogosphere.app