File ConversionImage ConversionFree Tool
PNG to ICO
Convert a PNG image into a real, valid Windows .ico file by building an actual ICO container that embeds your PNG — the modern Vista+ ICO format, not a renamed PNG.
How to Use PNG to ICO
- 1Upload your PNG image (square images work best)
- 2The ICO file is built automatically
- 3Download the resulting .ico file
Frequently Asked Questions
A genuinely valid ICO file — it builds the real binary ICO container structure (the ICONDIR header and ICONDIRENTRY) and embeds your PNG data inside it, per the format Windows Vista and later use. It's not simply a PNG with the file extension changed.
A square image works best — common favicon sizes are 32x32 or 16x16 pixels, though this tool preserves whatever dimensions your source PNG has, up to 255x255 stored directly (larger images are still embedded correctly but use the ICO format's special "256" size code).
No — it creates a single-image ICO containing just your uploaded PNG at its original size, not a multi-size bundle. For a full multi-resolution favicon set, a dedicated icon-generation tool is more appropriate.
No — the ICO file is built entirely in your browser.
Related Tools
JPG to PNG
Convert a JPG image to PNG entirely in your browser using the Canvas API — no upload to a server, no wait.
PNG to JPG
Convert a PNG image to JPG entirely in your browser at 92% quality — transparent areas are filled with white since JPG has no alpha channel.
ICO to PNG
Extract the largest icon image from a Windows .ico file as a real PNG, by parsing the ICO container format directly — works for modern PNG-compressed icons, not legacy uncompressed ones.
SVG to PNG
Rasterize an SVG vector graphic to PNG entirely in your browser, preserving transparency, at the SVG's rendered pixel dimensions.