private toolkit

What it does

the whole idea is in the tag line: everything runs in your browser — nothing is uploaded. there are no limits for the number of images or videos. file size is limited to user's device capabilities only.

Convert HEIC, camera RAW, WebP and AVIF images and turn MOV into MP4 — hundreds of files at once, free, all inside your browser. Nothing is uploaded.

Format converter for images, video and text. Drop in a whole folder — hundreds of files convert in one go and come back as a single .zip. Built to stay local, suitable for sensitive files. The codecs come to you — nothing leaves. This toolkit runs plain JavaScript for simple jobs — Base64 and quoted-printable encoding and decoding — and switches to WebAssembly modules for heavier ones, like transcoding MOV video or RAW camera photos into something smaller and more web-friendly. Privacy is the core feature, and that won't change: a Content Security Policy is in place, so that's enforced, not just promised. It does mean some limits compared to doing the work on a server — but…from privatetoolkit.org

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  Image Converter hub11d ago · imageconverterhub.com · ▲2

  Convert images in your browser. Nothing uploaded, ever.

• BC
  Bulk convert images online without sending to server2022 · webutils.app · ▲188

  There are lots of solutions already, but most solutions have too many ads or they process on server(privacy concern). Webutils convert all images on client using webassembly.

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  HEIC Converter2017 · ▲97

  Convert HEIC images to JPEG or PNG on macOS

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  .HEIC File Converter2022 · ▲79

  Easily convert your iPhone .HEIC photos to .JPG or .PNG

• HI
  Heicconvert.it – HEIC → JPEG, PNG, WebP or AVIF In-Browser (No Upload)2025 · heicconvert.it · ▲5

  I built heicconvert.it — a fast, private, and completely browser-based HEIC/HEIF image converter that supports output conversion to JPEG, PNG, WebP, or even AVIF. Why I made it: - Photos from iPhones often come in HEIC format, which isn’t broadly supported everywhere. - Existing tools tend to require uploads, compromise privacy, or feel clunky. - I wanted a zero-friction, client-side tool where conversion happens instantly, in your browser, without ever touching a server. Try it - https://www.heicconvert.it - No signup, no tracking, and no data is sent to anyone. What’s…

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  HEIC ConverterAug 2026 · heic.onlinefreetools.net · ▲1

  Convert HEIC to JPG/PNG 100% in your browser, no upload

• TL
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  Expeditione▲265

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  Eigendrum - Draw any shape and hear what it sounds like as a drum▲243

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  Life & fun · 26d ago · baselashraf81.github.io

• TL
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  Clipto MCP▲640

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• SA
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  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 · adant.ai

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  AI · 17d ago · simedw.com