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UserProof / YC homepage check / Magma

Magma homepage check

Checked October 28, 2026 · Summer 2026 · magmahq.ai

95out of 100 · Good · #92 of 378

Magma (Monetize your agent's traces) scored 95 out of 100 on our homepage check, #92 of 378 YC startups and #14 of 46 in Summer 2026. It passed 9 of 10 checks. The biggest problem: "Talk to us" is 15px tall on mobile (under 44px is easy to miss).

Magma home page on a phone
Magma on a 390px phone, October 28, 2026. Outlined: “Talk to us”, the button we tested.
  • Pass
    A sign-up, demo or get-started button on the first phone screen“Talk to us” is on the first screen.67% of YC startups pass this.
  • Pass
    The main button does something when tapped“Talk to us” is a mailto link.99% of YC startups pass this.
  • Pass
    Nothing covers the main buttonNothing sits on top of it.96% of YC startups pass this.
  • Fail
    The main button is at least 44px tall on a phone (−5 points)"Talk to us" is 15px tall on mobile (under 44px is easy to miss).65% of YC startups pass this.
  • Pass
    The page fits a phone screenNo sideways scrolling on a 390px-wide phone.100% of YC startups pass this.
  • Pass
    No JavaScript errors from the site's own codeNone seen while loading and tapping the main button.95% of YC startups pass this.
  • Pass
    No broken links to the site's own pages5 internal links checked.97% of YC startups pass this.
  • Pass
    Everything that looks clickable respondsClickable things on 3 pages responded.90% of YC startups pass this.
  • Pass
    Loads in under 4 seconds on desktop and 6 on a phoneLoaded in 2.0s on desktop and 1.7s on a phone.75% of YC startups pass this.
  • Pass
    Images and files loadEverything we requested from the site loaded.92% of YC startups pass this.

How Magma compares

Magma is the outlined dot. The top row is all 378 YC startups we checked; the bottom row is Summer 2026.

Score
All startups378 sites
Magma: 95/100
Magma: 95/100
Summer 202646 sites

Good (90+)Fair (75-89)Needs work (0-74)Each dot is one startup. Tap a dot to see its page.

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Other Summer 2026 startups with similar scores

← #92 MadeThis · #92 Maquoketa Research → · All 378 scores

How we checked

We loaded the home page in Chromium as a 390px phone and a 1366px desktop, found the main button by its words (sign up, book a demo, get started and similar), tapped it once, and checked up to 3 pages for broken links and dead taps. Nothing was submitted. Each failed check costs the points shown. Full method.