The Apple touch icon is 180x180 pixels. But is that still true in 2026?

If you've ever added a favicon to a website, you've met the touch icon — the picture iOS uses when someone taps Share → Add to Home Screen in Safari. You declare it like this:

<link rel="apple-touch-icon" href="/apple-touch-icon.png">

And the size everyone will tell you to use is 180×180 pixels.

That's the right answer. But I want to take you down the small rabbit hole I fell into recently, because "180×180" is one of those facts that sounds suspicious the moment you stop and think about it — and chasing down whether it's actually still correct turned out to be a lot more interesting than I expected.

Wait — hasn't that number been the same forever?

Here's what nags at me. 180×180 has been the recommended touch icon size for something like a decade. Meanwhile, iPhone screens have changed enormously. The panels keep getting bigger, and the pixel density keeps climbing. A modern iPhone crams in an absurd number of pixels.

So how can the same icon size from the iPhone 6 Plus era still be right for a phone with a screen this sharp? Either 180 was wildly future-proof back then, or something's off and we're all shipping slightly-too-small icons without noticing. That deserves a proper answer, not a shrug.

The web is full of answers. Almost none of them are official.

Search for it and you'll find a hundred pages confidently stating "180×180" — size guides, generators, Stack Overflow threads. RealFaviconGenerator (yes, my own site) is in there too.

But here's the uncomfortable part: that's all secondary sourcing. Everyone is citing everyone else. If the number is wrong, or outdated, the entire web would happily keep repeating it in unison. To actually trust 180, I wanted it from Apple.

Apple's own documentation on touch icons is... archived

This is where it gets awkward. The only Apple document that actually describes the apple-touch-icon markup — the Safari Web Content Guide — now lives in Apple's archived library. Not maintained. Its own example does show sizes="180x180", but the page even punts on sizes, telling you to "see the iOS Human Interface Guidelines for current icon sizes."

And that page? The current Human Interface Guidelines "App icons" page has quietly dropped the old pixel-size tables entirely. Today it only lists a single 1024×1024 source asset — the master image you hand to Xcode for a native app, which the system then renders down. That has nothing to do with a web clip, and it says nothing about 180.

So the situation is genuinely this: there is no actively-maintained Apple page that states the touch icon is 180×180. The number survives only in Apple's archive (the Safari guide, plus the old QA1686 icon-size table, where the home-screen icon file is literally named Icon-60@3x.png). Which brings us to why it's 180 in the first place.

Where 180 actually comes from

iOS lays out the Home Screen in points, not pixels. A point is an abstract unit; the number of physical pixels it maps to depends on the screen's scale factor.

The Home Screen app-icon slot has been 60 points for years. And the densest iPhones render at @3x — three pixels per point. So:

60 pt × 3 = 180 px

That's it. 180 isn't a magic number someone picked — it's just the 60 pt icon slot measured at the highest scale factor Apple ships. The Icon-60@3x filename in Apple's own archive spells it out.

But hold on — the high-resolution problem

Here's the objection that sent me down the hole, and it's worth doing the arithmetic, because at first it looks alarming.

Take a recent flagship, the iPhone 16 Pro Max. Its screen is 1320 pixels wide in portrait. iOS fits exactly 4 icons per row. So, naively:

1320 px ÷ 4 icons = 330 px per icon

330 pixels. If each icon gets a 330-pixel-wide column, then a 180-pixel icon is being blown up to fill it — an upscale of about 1.8×. That would make every home-screen icon look soft. On paper, 180 looks way too small for a screen like this.

If that math were the whole story, we'd have a real problem.

Why it's actually fine

The flaw in that calculation is the assumption that the icon fills its column. It doesn't.

Convert that screen back to points: 1320 px ÷ 3 = 440 points wide. Now lay out the row:

4 icons × 60 pt      = 240 pt   ← actual icons
remaining            = 200 pt   ← margins + gaps between them

Four icons use 240 points; the other 200 points are just whitespace — edge margins and the generous gaps iOS puts between icons. The "330 pixels per icon" from before was never 330 pixels of icon. It was 180 pixels of icon sitting inside a roomy, mostly-empty cell.

So the pixels are all there — the screen really is that dense — but iOS spends the surplus on breathing room, not on making the icon bigger. The icon stays a crisp 60 pt / 180 px square.

And the deeper reason 180 hasn't budged in a decade: no iPhone renders above @3x. There's no @4x device. High-density panels achieve their sharpness by being @3x with tiny pixels, and @3x of a 60 pt slot is — every time — 180 px. The screen getting sharper is precisely why 180 is correct, not a reason to exceed it. Ship a genuinely crisp 180×180 and you've hit the ceiling of what any current iPhone will draw.

So… you thought favicons were easy?

Let's recap what it took to be sure about a single number, for a single platform: reading three Apple documents (two of them archived, one of which redirects you to a page that no longer contains the answer), reconstructing the value from a point-size and a scale factor, and doing a little fifth-grade arithmetic to talk yourself out of a panic about high-resolution screens.

That's one icon. Now multiply it by every other platform, browser, and form factor — Android's adaptive icons, Windows tiles, Safari pinned-tab masks, the manifest, the classic favicon.ico with its multiple embedded sizes, dark-mode variants… each with its own quietly-shifting rules and its own archived documentation.

This is the whole reason favicon generators exist. Getting it right isn't hard because any single step is hard — it's hard because there are dozens of steps, the ground moves, and nobody publishes a tidy, current, authoritative table anymore.

So: the touch icon is 180×180. You can trust it. And if you'd rather not re-derive the other forty numbers from first principles every couple of years, use a favicon generator that already keeps track — that's exactly what it's for.