Developer Tools

Fillo

Last updated 2026-08-15 · benchmark measured 2026-09-16 — deterministic & reproducible

Fillo is a form-builder SDK for embedding forms in React apps and websites.

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To cite this score: legit.show/s/fillo-so/2026-09-16. That address never changes; this page moves with every re-measure.

Legit.Show scored Fillo 90/100 on 2026-09-16, measured across all 7 frames from its public surface. legit.show/s/fillo-so/2026-09-16

Is Fillo production-ready?

Legit.Show scores Fillo 90 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Fillo (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Accessibility; its weakest is Performance. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

• Performance — 66/100
• Accessibility — 100/100
• Security — 100/100
  How this compares across the catalogue: The Web Security Baseline
• Privacy — 75/100
  How this compares across the catalogue: The Privacy Gap
• Reliability — 100/100
• Standards — 92/100
• Discoverability — 100/100

What we measured

• Security headers present: CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 421 ms to first byte.
• Returns a proper 404 for unknown routes.
• 3 of 3 sampled routes reachable.
• Has a reachable privacy policy.
• Sets cookies / loads scripts with no consent prompt.
• Discoverable: structured data, sitemap, OpenGraph image, canonical URL.

Who it's for

React developers · Product teams · Form builders · SaaS companies · Enterprises

Pricing

Free (200 responses/month), €35/month for 5,000 responses/month with priority support

Sources and updates

Description

Taken from fillo.so's own website on 2026-08-15.

Operator

Fillo, as named in fillo.so'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 2026-09-16.

Put together from public information, without Fillo's involvement. If anything here is wrong, tell us and a person will check it.

Visit Fillo → · Alternatives to Fillo → · How this was measured →