Tools Hub

25+ free, fast, 100% client-side online tools. PDF, image, text and developer utilities — all processing happens in the browser, so files are never uploaded. Zero backend = zero hosting cost.

Live: https://guppyo.github.io/tools-hub/

Tools (25)

PDF (8)

Merge · Split · Compress · PDF to JPG · JPG to PDF · Rotate · Delete Pages · Watermark

Image (5)

Image Compressor · Image Converter · Image Resizer · QR Code Generator · Image to Base64

Text (5)

Word Counter · Case Converter · Lorem Ipsum · Text Diff · Slug Generator

Developer (7)

JSON Formatter · Base64 Encode/Decode · URL Encode/Decode · JWT Decoder · Hash Generator · Color Converter · UUID Generator

Why this makes money

• Zero operating cost — static site, free hosting on GitHub Pages.
• Privacy hook — "files never leave your device" converts and ranks.
• Broad keyword coverage — 25 tools = 25 keyword targets.
• Monetization built in — ad slots, donation CTA, Pro upsell modal.

Run locally

npx serve .
# or
python -m http.server 8080

Deploy

Already deployed via GitHub Pages on push to main. Configured at: https://github.com/guppyO/tools-hub/settings/pages

Monetization setup

1. Ads — index.html, find <!-- AD SLOT -->, paste AdSense snippet.
2. Donations — edit the "Buy me a coffee" link in the CTA band.
3. Pro — js/app.js → openProModal, set Gumroad/Stripe link.

Tech

• pdf-lib + pdf.js (PDF) + qrcode — all via CDN.
• Vanilla JS SPA, no build step.
• ~80 KB custom code across 5 JS files.

Traffic

• Sitemap submitted to Google Search Console.
• Each tool targets a high-intent search keyword.