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karim narimi
karim narimi

Posted on • Originally published at aawebtools.com

I Built 7 Free Browser-Based Tools — No Signup Required (Here's What I Learned)

After months of building, I just launched AAWebTools — a collection of free web tools that run entirely in your browser.

What I built

7 tools, zero signups required:

  • 🎵 TikTok Video Downloader — no watermark, HD quality
  • 🐦 Twitter/X Video Downloader
  • 📄 Free Invoice Generator — 5 PDF templates, EN/FR support, international tax compliance
  • 🤖 AI Content Detector — pure JS perplexity scoring, no API cost
  • ✍️ AI Text Humanizer — Claude API backend
  • 💰 Pay Stub Generator — supports USA, Canada, UK, France, Germany, Australia, Morocco
  • 🖼️ Image Toolkit — compress, convert to WebP/AVIF, resize with social media presets — images never leave your browser

The tech stack

Pure HTML5 + Vanilla JS frontend (no React, no frameworks). Node.js backend only for the downloaders. Python container ready for future tools. Docker on a Hostinger VPS.

No frameworks = sub-1-second load time on all pages. Lighthouse 90+ across the board.

The privacy-first decision

The image toolkit was the most interesting challenge. Instead of sending files to a server (like TinyPNG does), everything runs client-side using the Canvas API and browser-image-compression library. Images never touch our server.

This was actually faster than server-side processing for most users because there's no upload/download round trip.

What's live now

https://aawebtools.com

All tools are live, free, and working. Would love feedback from the dev community — especially on the image toolkit and AI detector.

What free tools do you find yourself reaching for most often?

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