Image
Favicon generator
Build favicon PNGs and a PNG-in-ICO locally from a square source image.
This tool processes files and text locally in your browser. Your content is not uploaded or stored by this site.
Loading the workbench…
What this tool does
The source is resized to 16, 32, 48, 180, 192, and 512 pixels. Those PNGs are zipped together with a favicon.ico that contains the 16, 32, and 48 images as PNG entries (Windows Vista and later). A square source works best. Non-square images are fitted to a square canvas.
How to use it
- Drop a square PNG or SVG-rasterisable image.
- Download favicons.zip.
- Use favicon.ico for legacy links, and the PNG sizes in your site’s metadata.
Supported input
- A source image, ideally square
Output
- A zip of PNG files at standard sizes plus favicon.ico
Privacy
This tool processes files and text locally in your browser. Your content is not uploaded or stored by this site.
ConvertPass does not include your input in analytics, URLs, or error reports. Encoding: PNG, plus PNG-in-ICO. Limit: 25 MB (25.00 MB).
Limitations
- The ICO contains PNG images, not BMP DIB icons. Very old Windows versions before Vista may not read it.
- SVG is rasterised if the browser can draw it, which loses true vector scaling.
Example
mark.png 1024×1024
favicon.ico, favicon-16.png … apple-touch-icon 180.png … icon-512.png
Troubleshooting
- The icon looks padded
- Use a square source with the glyph already centred. This generator does not auto-trim transparency.
FAQ
Do I still need a favicon.ico?
The zip now includes favicon.ico with 16, 32, and 48 PNG entries. That works on Windows Vista and later. Keep the PNG sizes for modern browsers and apple-touch-icon.
What about maskable icons?
Keep important content in the centre 80% if you will also use the 192/512 files as maskable PWA icons.
Is the zip uploaded?
No. JSZip runs in the page.
Can I pick colours?
Not here. Prepare the source artwork first, then generate sizes.
Related tools
- Social image resizer
Export named social sizes locally, with the pixel dimensions stated up front.
- Image resizer
Crop and resize images on-device without a trip through a remote farm.
- Image colour palette extractor
Pull a handful of dominant colours from an image without uploading it.
Related guides
Related formats
Last reviewed 16 August 2026. Report a problem. Reports do not include your input.