PNG → ICO
Package a PNG into a standard ICO icon container with transparency fully preserved, scaled to 256px or smaller for favicons and Windows app icons.
Drag files here or click to upload (multiple files supported)
Ctrl+V to paste from clipboard
How to convert PNG to ICO
- 1Upload your PNG file by dragging, clicking, or pasting.
- 2Adjust quality settings if needed.
- 3Click 'Convert Now' and wait for the conversion to complete.
- 4Download your converted ICO file.
About PNG to ICO conversion
PNG was released in 1996, uses DEFLATE lossless compression, and was designed for general-purpose lossless image storage. ICO is the icon container format for Windows, and supports encapsulating multiple resolution bitmaps from 16px to 256px. The difference in purpose between the two formats creates demand for converting PNG to ICO.
Conversion generates a standard ICO container. The 8-bit alpha channel information from the original PNG is preserved, and the original 48-bit color depth is retained in compliance with ICO format specifications. File size changes based on encapsulated resolutions, and there is no compression-related quality loss.
The output ICO can be used for Windows desktop icons and website favicon creation, and is compatible with all versions of Windows and major modern browsers. When creating website icons, it is recommended to encapsulate multiple resolutions from 16x16 to 256x256 to adapt to different scenarios.
PNG vs ICO: technical comparison
| Feature | PNG | ICO |
|---|---|---|
| Compression | Lossless | Lossless |
| Transparency | Yes | Yes |
| Animation | No | No |
| Released | 1996 | 1985 |
| Developer | PNG Development Group | Microsoft |
FAQ about PNG → ICO
Is there quality loss after conversion
No quality loss occurs during conversion. This conversion is processed based on the Sharp engine, and uses lossless encapsulation to generate ICO. The pixel information of the original PNG is fully preserved.
Is the alpha channel preserved
The alpha channel is preserved. ICO format natively supports 8-bit transparency, and the alpha channel information from the original PNG can be fully written into the generated ICO file.
What is the single file size limit
The maximum single file size for this tool is 50MB, and only one file can be converted per session. The service is free of charge, output files have no watermarks, and no account registration is required.
Are files stored after conversion
Files are not stored. Files are uploaded to the server via HTTPS for conversion. After conversion completes, the server immediately deletes both the source file and output file, and does not store any files.