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. Ins