mit.edu favicon

https://web.mit.edu/ · 1 redirect · checked November 5, 2026

17passed
7warnings
2missing
7optional

The main favicon of mit.edu is favicon.svg, an SVG file of 484 B. We found 6 icon files, 44.6 KB in total. Google Search can use apple-touch-icon.png, a 180×180 PNG file (2.7 KB). The site scores 81 out of 100: 17 passed, 7 warnings, 2 missing. Missing: name, maskable manifest icon.

How it looks

Rendered from the files we found.

MIT - Massachusetts Institute of Technology

Browser tab · lightPassed

MIT - Massachusetts Institute of Technology

Browser tab · darkOptional

Check that the icon stays visible on a dark tab.

Massachusetts Institute of Technologyhttps://web.mit.edu

MIT - Massachusetts Institute of Technology The mission of MIT is to advance knowledge and educate students in science, technology and other areas of scholarship that will best serve the nation and the world in the 21st century.

Google searchPassed

Massachusetts Institute of Technology

iOS home screenWarning

iOS fills transparent areas with black. Give the icon a solid background.

Android · maskableMissing

There is no maskable icon, so Android shrinks the regular one onto a white circle.

PWA install & splashPassed

All favicon files of mit.edu

6 found

File	Found through	Format	Size	Weight
favicon.ico	default path	ICO	16, 32, 48 px	15.0 KB
favicon.ico	rel="icon"	ICO	16, 32, 48 px	15.0 KB
favicon.svg	rel="icon"	SVG	vector	484 B
apple-touch-icon.png	rel="apple-touch-icon"	PNG	180×180	2.7 KB
favicon-192x192.png	manifest	PNG	192×192	2.9 KB
favicon-512x512.png	manifest	PNG	512×512	8.4 KB

Classic favicon

2 passed

favicon.ico

Passed

GET /favicon.ico · not declared in HTML (found at the root)

Format: ICO (real)
Contains: 16 · 32 · 48
File size: 15.0 KB
HTTP: 200
Content-Type: image/x-icon
Cache: 4 hours

ICO 32×32

Passed

<link rel="icon" href="/themes/mit/assets/favicon/favicon.ico" sizes="32x32">

Declared: 32×32
Actual: 16 · 32 · 48
Format: ICO
File size: 15.0 KB
HTTP: 200
Content-Type: image/x-icon

SVG icon

1 passed

SVG favicon

Passed

<link rel="icon" href="/themes/mit/assets/favicon/favicon.svg" type="image/svg+xml">

Square viewBox: yes
Dark mode: no
Scripts: none
File size: 484 B
HTTP: 200
Content-Type: image/svg+xml

Add a prefers-color-scheme media query in the SVG to switch colors for dark browser themes.

Apple

1 warning · 1 optional

Apple touch icon

Warning

<link rel="apple-touch-icon" href="/themes/mit/assets/favicon/apple-touch-icon.png">

Declared: no sizes
Actual: 180×180
Recommended: 180×180
Background: transparent
File size: 2.7 KB
HTTP: 200

iOS fills transparent areas with black. Give the icon a solid background.

mask

Safari pinned tab (mask-icon)

Optional

<link rel="mask-icon" href="…" color="…"> – not found

Legacy. Safari 12+ uses the regular favicon, so this is no longer required.

Web app manifest file

1 warning

json

manifest.webmanifest

Warning

<link rel="manifest" href="/themes/mit/assets/favicon/manifest.webmanifest">

HTTP: 200
Content-Type: text/plain
JSON: valid
File size: 231 B
Same origin: yes
Cache: 14 min

Serve the manifest as application/manifest+json.

Manifest fields

2 passed · 4 warnings · 2 missing · 2 optional

nameShown under the icon when the site is installed.
not set
short_nameUsed on the home screen when name is too long.
not set
start_urlThe page that opens when the installed app starts.
not set
displayDefaults to "browser", which is not installable.
not set
theme_colorColors the title bar of the installed app.
not set
background_colorThe splash screen background.
not set
icons · 192×192
PNG · 2.9 KB · 200
icons · 512×512
PNG · 8.4 KB · 200
icons · purpose: maskableWithout it Android shrinks your icon onto a white circle.
not found
id
not set

Google search

6 passed

Supported file format
PNG · apple-touch-icon.png
Square, at least 8×8 px
180×180
Larger than 48×48 px
180 px
Declared on the homepage
yes
Not blocked by robots.txt
allowed
Stable URL
no redirects

Meta & legacy

4 optional

theme-colorColors the browser UI on mobile.
not set
theme-color for dark modemedia="(prefers-color-scheme: dark)"
not set
msapplication-TileColorWindows tiles, legacy.
not set
browserconfig.xmlWindows tiles, legacy.
not found

Delivery & performance

6 passed · 1 warning

HTTPS for every icon
6 of 6
No mixed content
0 http:// links
No broken links
0 errors
Cache headersIcons rarely change; cache them for at least a day.
0 of 6 · ≥ 1 day
Total icon weight
44.6 KB
Redirects
0
Duplicate tags
none

Icon tags found in <head>

<link rel="icon" href="/themes/mit/assets/favicon/favicon.ico" sizes="32x32">
<link rel="icon" href="/themes/mit/assets/favicon/favicon.svg" type="image/svg+xml">
<link rel="apple-touch-icon" href="/themes/mit/assets/favicon/apple-touch-icon.png">
<link rel="manifest" href="/themes/mit/assets/favicon/manifest.webmanifest">

Questions about the mit.edu favicon

Where is the mit.edu favicon?

The main one is at https://web.mit.edu/themes/mit/assets/favicon/favicon.svg. The default path, https://web.mit.edu/favicon.ico, also returns an icon.

What size is the mit.edu favicon?

favicon.svg is a vector file, so it scales to any size. The largest raster icon on the site is favicon-512x512.png at 512×512 px.

Can Google Search show the mit.edu favicon?

The site meets Google's rules: apple-touch-icon.png is a 180×180 PNG file (2.7 KB) and robots.txt allows it. Google still decides what it shows.

Does mit.edu have an Apple touch icon and a maskable icon?

The Apple touch icon is 180×180, with transparent areas that iOS turns black. The manifest has no maskable icon, so Android shrinks the regular one onto a white circle.

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