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Sinkhole – 30 free browser-based tools, no signup, MIT licensed

Sinkhole – 30 free browser-based tools, no signup, MIT licensed

by boringeurodev·Mar 9, 2026·2 points·0 comments
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AI Analysis

●MidCrowd Pleaser

Free TinyPNG and SmallPDF alternative, but these tools already exist everywhere.

Strengths
  • •MIT licensed with all processing client-side for privacy
  • •30+ tools in one place saves bookmarking multiple sites
  • •No file retention means uploads never hit a server
Weaknesses
  • •Background removal uses simple threshold, not AI like remove.bg
  • •Nothing technically novel, just aggregates existing open-source libraries
Category
Productivity
Target Audience

Casual users needing occasional file conversions and quick utilities

Similar To

TinyPNG · iLovePDF · CyberChef

Post Description

I built this because I kept paying monthly fees for tools I use maybe twice a month — TinyPNG, SmallPDF, iLovePDF, Convertio etc.

Sinkhole replaces all of them: - Image tools: compress, convert, resize, crop, rotate, blur, HEIC→JPG, remove background - PDF tools: merge, split, compress, unlock, PDF→images - Text tools: word counter, JSON formatter, Base64, URL encoder, Markdown preview - Video tools: compress, video→GIF, thumbnail extractor - Dev tools: webhook tester, website screenshot

Everything runs in the browser or via a lightweight API. No accounts, no watermarks, no file retention, MIT licensed.

GitHub: https://github.com/BoringEuropeanDev/sinkhole

Feedback welcome — especially on tools people wish existed.

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