I wasted 20 minutes uploading images to Favicon.io just to get a 16x16 pixel icon. Then I realized I had to create an account for it. And the free tier is basically useless — the Pro plan is $29/month.
So I built a free alternative that runs entirely in your browser.
The problem with favicon generators
Most online favicon tools share the same flaws:
Upload required — your image goes to someone else's server
Account wall — create an account just to download a 32x32 PNG
Subscription pricing — $29/month for a tool that does pixel-perfect resizing
No offline support — you need internet just to generate a tiny icon
What I built
Favicon Generator generates favicons in every format you need:
ICO (16/32/48px) — multi-resolution, single file
PNG (16/32/48/180/192/512px) — every size you'd ever need
SVG — scalable vector wrapper
Apple Touch Icon (180x180) — iOS home screen
Open Graph (1200x630) — social media sharing
Zero JavaScript libraries. Zero dependencies. One HTML file.
How it works
When you drop an image, it uses the Canvas API to resize to your selected formats. Everything happens locally — no network requests, no server calls. Your images never leave your machine.
The ICO encoder is a ~40-line inline function that packs multiple PNG sizes into a single .ico file with proper headers. No library needed.
Why this matters
Favicon generation is a utility, not a product. You shouldn't pay monthly for it, and you definitely shouldn't need to upload your brand assets to a third-party server.
This tool proves that simple utilities should be simple: free, fast, private, and offline-ready.
Try it at favicon.jackgreen.top — no signup, no upload, no cost.