Developer Tools
Maple
Last updated 2026-09-08 · benchmark measured 2026-09-08 — deterministic & reproducible
Maple is a variable-first, stack-agnostic atomic CSS engine for browsers.
Maple at a glance
Maple is an atomic CSS engine that turns utility classes into CSS directly in the browser, for frontend developers, web designers, and full-stack developers working on any stack.
Good for
- Adding CSS styling to a project without setting up a build step or configuration files
- Working across different stacks like WordPress, Rails, React, Angular, or plain HTML
- Building interfaces that need dark mode support tied to system preferences or manual toggles
- Creating responsive layouts using CSS Grid without writing full grid syntax by hand
Questions people ask
Does Maple require a build step or configuration files?
No, Maple generates atomic styles from utility classes as they appear in the DOM, with no build step or config files needed.
How do I add Maple to my project?
You include a single script tag pointing to Maple's CDN file in the head of your HTML, then start using utility classes on your elements.
What stacks does Maple work with?
Maple works with any stack, including WordPress, Rails, React, Angular, or plain HTML.
How does dark mode work in Maple?
Maple uses a hybrid dark mode architecture that automatically supports both system preferences and manual toggles, using a single --l-shift variable to adjust the interface.
Does Maple include animations?
Yes, Maple has built-in animation aliases like fade-in, scale-in, spin, pulse, and bounce, with customizable timing, delays, and fill modes directly in markup.
Written by Legit.Show from maple.f12.io on 2026-09-30. It does not change the score.
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To cite this score: legit.show/s/maple-f12-io/2026-09-08. That address never changes; this page moves with every re-measure.
Legit.Show scored Maple 76/100 on 2026-09-08, measured across all 7 frames from its public surface. legit.show/s/maple-f12-io/2026-09-08
Is Maple production-ready?
Legit.Show scores Maple 76 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Maple (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 71/100
- Accessibility — 89/100
- Security — 45/100How this compares across the catalogue: The Web Security Baseline
- Privacy — 25/100How this compares across the catalogue: The Privacy Gap
- Reliability — 100/100
- Standards — 100/100
- Discoverability — 100/100
What we measured
- Security headers present: X-Content-Type-Options, Referrer-Policy.
- No Content-Security-Policy and no HSTS.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 242 ms to first byte.
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- No privacy policy found.
- Sets cookies / loads scripts with no consent prompt.
Who it's for
Frontend developers · Web designers · React/Vue/Angular developers · WordPress/Rails developers · Full-stack developers
Sources and updates
- Description
- Taken from maple.f12.io's own website on 2026-09-08.
- Operator
- F12, as named in maple.f12.io's terms, privacy page or footer.
- Benchmark
- Measured by Legit.Show from the live site, the way any visitor sees it — with no access to its code or accounts. Same method for every product, and no AI decides the score. Last checked 2026-09-08.
Put together from public information, without Maple's involvement. If anything here is wrong, tell us and a person will check it.
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