Preview and inspect .ico favicons

Drop in a favicon .ico file to preview it on a checkerboard background, zoom in closely, and see which icon sizes are bundled inside the file.

Current file

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File summary

Format None

File size 0 KB

Images 0

Largest None

What it shows

ICO files can contain several favicon images at different sizes. This viewer reads the ICO directory and previews the browser-rendered favicon without uploading the file.

Preview

Zoom in and inspect the favicon

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Zoom level 100%

Embedded icons

Sizes found inside the ICO

Local scan

Size	Colour	Encoding	Bytes

Details

Favicon notes

Browser preview

Multiple sizes are normal

A strong favicon.ico usually contains small and larger variants so browsers can choose the best fit.

PNG entries are common

Modern ICO files often store PNG-compressed images alongside older bitmap-style entries.

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