Convert PNG to ICO

Transform your lossless image format with transparency into ICO format. Free, private, and browser-based.

How it works

  1. Upload PNG Files — Drag and drop your PNG files into the converter, or click to browse. Common sources: screenshots, graphic design tools.
  2. Convert to ICO — The converter processes your files to ICO format entirely in your browser. No files are uploaded to any server — your privacy is guaranteed.
  3. Download Results — Download your converted ICO files instantly. For multiple files, download individually or as a ZIP archive.

Why convert PNG to ICO

  • Significantly reduce file size — ICO files are much smaller than PNG
  • Leverage ICO advantages: can contain multiple sizes in one file
  • Overcome PNG limitations: larger file sizes than jpeg for photos
  • Upload to websites and platforms that require or prefer ICO format

FAQ

Is PNG to ICO conversion free?
Yes, Fileza.io converts PNG to ICO completely free with no limits on file size or number of conversions. No hidden fees, no watermarks, and no account required.

Will I lose quality converting PNG to ICO?
No quality is lost. ICO uses lossless compression, preserving all original data from your PNG file.

Is it safe to convert PNG to ICO online?
Absolutely. Unlike most online converters, Fileza.io processes your files entirely in your browser using WebAssembly. Your PNG files are never uploaded to any server — the conversion runs on your own device, keeping your files 100% private.

Can I convert multiple PNG files to ICO at once?
Yes, Fileza.io supports batch conversion. Drag and drop multiple PNG files at once and they will all be converted to ICO simultaneously. Download them individually or as a ZIP archive.

Does PNG to ICO conversion work on mobile?
Yes, the converter works on any device with a modern web browser — iPhones, iPads, Android phones, and tablets. No app installation required.

Will the converted ICO files be smaller or larger than PNG?
Yes, ICO files are typically much smaller than PNG. You can expect significant file size reduction, often 50-90% smaller depending on content and quality settings.

How long does PNG to ICO conversion take?
Most conversions complete in seconds. The exact time depends on file size and your device performance. Since processing happens locally in your browser, faster devices convert more quickly.