What is a favicon, and does my website need one?
The short answer
The small icon that appears in a browser tab, a bookmark and a phone home screen. You need one — without it your site shows a blank or generic mark, which looks unfinished and makes you harder to find among a dozen open tabs. It takes about ten minutes to add and is one of the few genuinely trivial improvements worth doing today.
On this page
What it is
The small square image next to a page title in a browser tab. It also appears in bookmarks, in browser history, in search results on some devices, and as the icon if someone saves your site to a phone home screen.
Without one, browsers show a blank page mark or a generic globe.
Why it is worth ten minutes
Findability among tabs. People keep many tabs open while comparing options. Your tab is a tiny icon and a few truncated words. The icon is what someone scans for when returning to you, and a blank one is invisible in that row.
It signals a finished site. Not consciously — but a missing favicon is one of the small details that make a site feel unattended, alongside a broken link or a stretched image.
Home screen saves. If someone adds your site to their phone home screen, this is the icon they see. Blank there looks distinctly unfinished.
What you need
Modern browsers accept several formats, but the practical set is small:
| Purpose | Size |
|---|---|
| Browser tab | 32×32 |
| Phone home screen | 180×180 |
| Android and PWA | 192×192 and 512×512 |
Most site platforms and favicon generators take one square image and produce the whole set. You do not need to make each one by hand.
The mistake that makes it useless
Using your full logo.
At 32 pixels square, a horizontal logo with your business name becomes an unreadable smear. It is technically present and practically invisible, which is the worst of both.
Use a simplified mark instead: a single letter, a symbol from your logo, or a distinctive shape. Test it at actual size — shrink it on screen and see whether you can still tell what it is at a glance.
High contrast matters too. A pale icon disappears against a light tab bar, and many people use a dark theme where the opposite happens. Check both if you can.
How to add it
If you are on a platform, there is almost certainly a setting — usually under site or brand settings — where you upload one square image and it handles the rest.
If your site is custom-built, whoever built it can add the files and the links in a few minutes.
Either way, check it afterwards. Load your site in a new tab and look. A surprising number of favicons are added, cached wrong, and never actually seen by anyone.
Where it fits
This is a small thing, and it belongs on the list of small things: a favicon, alt text on images, a proper page title, a description. None of them individually changes your fortunes. Together they are the difference between a site that feels maintained and one that feels abandoned — and visitors read that distinction long before they read your words.
Where this sits among things that matter
Being honest about proportion: a favicon is worth ten minutes and is not worth a meeting. It is a small credibility signal and a genuine convenience for anybody who keeps twenty tabs open. That is the whole of it.
It does belong to a category worth naming, though — the set of small setup jobs that are each trivial, individually never urgent, and collectively the difference between a site that looks attended and one that does not. The favicon. The social preview image that appears when someone shares a link. A 404 page that helps rather than dead-ends. The redirect from the version of your domain without www. The certificate.
None of them will ever be the most important thing on your list, which is exactly why they stay undone on sites where somebody has to be asked. On Helm they are simply part of setup, done once and not thereafter your problem. That is the honest case for a managed platform on a page like this: not that any single item is hard, but that nobody gets round to a list like this on their own.