Convert Image to ICO
Create a Windows .ico file with multiple embedded sizes (16–256px) from any image. Perfect favicon and app-icon maker.
About the Image to ICO
ICO files bundle several resolutions in one container so Windows can pick the crispest size for each context. This tool writes a valid multi-size ICO from your image — a custom binary encoder, built in-browser, no upload.
How it works
The tool renders your image at each size you list and packs all renditions into a single multi-resolution .ico — the container format Windows shortcuts and browsers' favicon lookups expect. Smooth downsampling keeps small sizes legible, and the size list is editable if you need a custom set.
How to use it
Drop one image (PNG, JPG, WebP or SVG), edit the size list if needed — 16, 32, 48, 64, 128, 256 is the classic set — and convert. Download the .ico and reference it as your favicon or shortcut icon.
Supported formats & limitations
Accepts .png, .jpg, .webp and .svg up to 30MB; single file per run; output is .ico. Square sources work best; non-square images are fitted into square frames. Very detailed logos may need simplification to read clearly at 16px.
Common use cases
Website favicons with proper Windows support, desktop application icons, folder icons, and shortcut branding. Pair it with the Favicon Generator when you also want modern PNG favicon sizes for Apple and Android touch devices.
Frequently asked questions
Is my image uploaded to a server when I use Image to ICO?
Everything runs locally in your browser via the Canvas API. Your picture never leaves your machine — there is no upload step at all, so processing is as private as working in an offline editor.
Which input formats does Image to ICO accept?
Common formats are covered: PNG, JPG, WEBP or SVG+XML, each up to 30 MB. Paste from the clipboard, drag and drop, or use the select button.
What are the size and batch limits?
One image is processed per run, up to 30 MB — and you can run it as many times as you like. No signup, no counters, and no watermark on results.
Can I fine-tune the result before downloading?
The controls cover Icon sizes (comma-separated). Nothing is baked in until you press the action button, and every run gives you a fresh preview to check.
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