Favicons in Search Results
Last updated
A favicon is the small square image a browser shows in a tab, and the same file is what Google displays beside your result in search. Google calls it a site icon. It is declared once per hostname, on the home page, and it is one of the few things a site controls that renders in organic results and in the citation lists attached to AI Overviews and AI Mode.
What is a favicon in search results?
Google displays a site icon next to the URL and breadcrumb above each result title. Its stated purpose is recognition: the guidance asks you to make the favicon “visually representative of your website’s brand” so people can “quickly identify your site when they scan through search results”.1
One favicon covers one site, and Google defines a site here as a hostname. https://example.com and https://news.example.com are separate hostnames and can carry different icons. https://example.com/news is a subdirectory, so it inherits whatever the root declares.1 A section of a site cannot have an icon of its own.
Google also states that following every guideline does not guarantee display: “A favicon isn’t guaranteed to appear in Google Search results, even if all guidelines are met.”1
How do you add a favicon for Google Search?
Declare it with a <link> element in the <head> of your home page:
<link rel="icon" href="/favicon.ico">Three details in Google’s implementation notes each remove a step people commonly add:
- Four
relvalues are read.iconis the standard one.shortcut iconis supported for historical reasons, andapple-touch-iconandapple-touch-icon-precomposedare both valid sources.1 An Apple touch icon you already ship counts, so it does not need a duplicate declaration. - The file does not have to sit on your domain. Google accepts a relative path, an absolute path, or a URL on a CDN.1
- Only the home page declaration is read. Adding the tag to a template that outputs it on every page is harmless but does nothing extra for Search.
After that it is a waiting game. Google’s own estimate for picking up the change is “several days to several weeks”, and requesting indexing of the home page through the URL Inspection tool is the one lever available to speed it up.1
Which file formats does Google Search support?
BMP, GIF, ICO, PNG, JPEG, PPM and TIFF.1 Google added that list to its documentation on 28 August 2026, replacing a link to an external reference that had drifted over time and left the supported set ambiguous. It says the formats themselves did not change, only the documentation.2
SVG and WebP are absent from the list, and SVG is the one that catches sites out, because a single scalable icon is a common default in modern templates and framework starters. Chrome has rendered SVG favicons since Chrome 80 in February 2020,3 so an SVG favicon displays perfectly in the tab while producing no site icon in results. The failure is silent, which is why sites run for months without noticing.
The restriction belongs to the favicon pipeline, not to Google’s ability to decode the file. Google’s image guidelines name SVG and WebP among the formats Search supports for images in an <img> element,4 so the same file Google will index as an image on your page is one it will not accept as your site icon.
Check the file extension on your icon
Open your home page, right-click anywhere on it and choose View page source. Search that page for rel="icon". If every match points at a file ending .svg or .webp, Google Search has no icon it can use, and your browser tab will look exactly the same either way.
A multi-size ICO is the safest single declaration, since one file can carry 16, 32 and 48 pixel versions and cover the tab, the bookmark bar and higher-density displays without a second request.
What size and shape does a favicon need to be?
Square, a 1:1 aspect ratio, and at least 8x8 pixels. Google recommends going larger than 48x48 “so that it looks good on various surfaces”, which is the practical minimum given how many places the icon now appears.1 Google does not document what it does with a non-square file, so the requirement is the safer thing to design to.
Two further constraints sit in the same guidance. The favicon URL must be stable, so replacing the file at an existing path is better than publishing it at a new one.1 And Google will substitute a default icon for imagery it considers inappropriate, naming pornography and hate symbols as examples.1
Where do favicons appear in AI Overviews and AI Mode?
In the citation links, which is what makes the favicon unusual among on-page elements. A title tag gets rewritten and a meta description is often ignored, but the icon file is served as it is.
Google uses its own term for this. When it introduced the expanded link display for AI Overviews, it told mobile users to reach the full list by “tapping the site icons on the upper right”.5 In AI Mode, favicons appear beside cited sources, and in May 2026 Google was seen testing a treatment that enlarges them and places them inline next to the anchor text they support rather than only in a citation list. Sachin Patel spotted the test and Brodie Clark replicated it.6
Read the value here carefully, because it is easy to overstate. A favicon is not a retrieval signal. Nothing suggests it affects whether a page is selected or cited, and there is no mechanism by which a 48-pixel image would. What it changes is what a reader sees once the citation already exists, and that matters more in an AI answer than in an organic result: there is no blue link, usually no visible URL and no description, so the icon is often the only brand identifier travelling with your citation.
One consultant documented a case in May 2026 where a restored favicon appeared in AI Mode and AI Overviews about two days before it appeared in organic results, which were still showing the placeholder globe.7 That is one site and one observation, and a lag between surfaces is explained as easily by different serving caches as by different detection. Treat it as a reason not to panic when two surfaces disagree, rather than as documented behaviour.
Why is my favicon not showing in Google search results?
The symptom is a grey globe sitting where your icon should be, which is the placeholder Google substitutes when it has no icon it can use.
Work through these in order, since the first three account for most cases:
- It is declared somewhere other than the home page. Only the home page of the hostname is read.1
- It is an SVG or a WebP. Neither is on Google’s list, and both render fine in a browser, so the tab gives no warning.
- It is not square, or smaller than 8x8 pixels.
- Googlebot or Googlebot-Image cannot reach it. Googlebot must be able to crawl the home page and Googlebot-Image the favicon file, and neither can be blocked from crawling.1 A blanket
robots.txtrule on an assets directory is the usual cause. - The URL moved. Changing the path resets the clock and Google asks for a stable URL.1
If all of those check out, the remaining answer is time: several days to several weeks for a recrawl, with URL Inspection as the only accelerator.1
Do favicons affect click-through rate?
No published study measures it. The claim that a favicon lifts click-through rate circulates widely and, as far as anything public goes, rests on plausibility rather than data, so it belongs in the same category as other untested display effects.
What is documented is Google’s own reason for showing one, and it is about recognition rather than clicks: helping people identify a site as they scan a results page.1 That reasoning holds without a measured effect attached, and it justifies spending twenty minutes on a favicon. It does not justify spending a week on one.
Frequently asked questions
Does a favicon affect rankings?
No. It is a display element, and Google documents it under search appearance rather than as a ranking consideration.1 A missing favicon costs you a visual brand cue in results and in AI citations, not position.
Can different pages have different favicons?
No. Google supports one favicon per hostname, and subdirectories inherit it.1 A subdomain is a separate hostname, so news.example.com can carry a different icon from example.com.
Does an SVG favicon work at all?
Yes, in browsers. Chrome has supported SVG favicons since Chrome 80,3 and an SVG will display in the tab. It just produces nothing for Google Search, so a site wanting both needs an SVG for the browser and a raster file in a supported format for Search.
Footnotes
-
Define a favicon to show in search results — Google Search Central ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9 ↩10 ↩11 ↩12 ↩13 ↩14 ↩15 ↩16 ↩17
-
Search Central documentation updates, 28 August 2026 — Google Search Central. “Previously, the documentation linked to an external reference that evolved over time and caused ambiguity about which favicon file formats are actually supported in Google Search.” ↩
-
Support for SVG in favicons — Chrome Platform Status. Enabled by default from Chrome 80 on desktop and Android. ↩ ↩2
-
Image SEO best practices — Google Search Central. “Google Search supports images referenced in the
srcattribute ofimgin the following file formats: BMP, GIF, JPEG, PNG, WebP, SVG, and AVIF.” ↩ -
New ways to connect to the web with AI Overviews — Google, 15 August 2024. ↩
-
Google Tests New Anchor Links & Favicon Experiences In AI Mode — Search Engine Roundtable, 6 May 2026. ↩
-
Google uses two different methods to detect favicons — Sanoop Balan, May 2026. A single-site observation; the two-pipeline conclusion the author draws goes further than a propagation lag supports. ↩
