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Set a favicon that identifies the site at small sizes

Summary

Choose a recognizable favicon and check its file URL, page markup, search requirements, and home-screen differences before diagnosing display problems.

Published

A favicon identifies a site in tabs and other small displays

The small image identifying a website in browser tabs or bookmarks is called a favicon. Assess its small-scale appearance rather than simply shrinking a complete logo. MDN describes declaring page icons in the head. (MDN page icons)

Its purpose is identification. Its presence alone provides insufficient evidence about business trust or inquiry outcomes.

Choose a form recognizable at small sizes

Compare a logo mark or short symbol with a long business name. Check its outline against light and dark backgrounds.

Compare the original artwork with the reduced image

Fine strokes and lettering may disappear when reduced. Simplify the artwork and compare it near the intended tab size. Keep the source artwork for other display requirements.

Read requirements for each display destination

HTML can declare <link rel="icon" href="/favicon.png"> in the page head. With a builder, check the image setting and the publishing action.

Distinguish tabs, search results, and home screens

Google Search requires a square image at least 8 by 8 pixels and recommends an image larger than 48 by 48. The file must be retrievable with a stable URL. Eligibility and actual display are separate. (Google favicon requirements)

Home-screen icons may use separate declarations. List the destinations you need instead of treating a tab icon as configuration for every device.

Verify the image URL and published result

Open the file URL to verify the actual image. For an old or missing image, investigate the declaration, publication, and stored browser data.

Compare the declared and published files before attributing the problem solely to caching. See Text and background contrast for color choices.

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Frequently asked questions

Q: Should the icon contain the whole business name?

A: Long lettering can disappear. Compare a logo mark or short symbol at the intended size.

Q: Is one 16-pixel image sufficient?

A: Read each destination requirement. Google Search recommends an image larger than 48 by 48 pixels.

Q: Will it appear in search immediately?

A: Retrieval and processing follow publication. Assess the declaration and search display separately.

Q: Is caching always the cause of a missing icon?

A: File availability, declaration, and publication can also be responsible. Compare the requested file with the configured destination.

Sources

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