Developer Tools
CRC Calculator
Last updated 2026-07-29 · benchmark measured 2026-08-09 — deterministic & reproducible
Online tool to calculate, compare, and look up CRC checksums across 55 algorithms.
Is CRC Calculator production-ready?
Legit.Show scores CRC Calculator 78 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on CRC Calculator (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Accessibility; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 93/100
- Accessibility — 100/100
- Security — 60/100
- Privacy — 25/100
- Reliability — 75/100
- Standards — 92/100
- Discoverability — 100/100
What we measured
- Security headers present: X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
- No Content-Security-Policy and no HSTS.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 626 ms to first byte.
- 3 of 3 sampled routes reachable.
- No privacy policy found.
- Sets cookies / loads scripts with no consent prompt.
- Discoverable: structured data, sitemap, OpenGraph image, canonical URL.
Who built it
crc-calc
Who it's for
software developers · embedded systems engineers · protocol implementers · data integrity testers · firmware developers
Visit CRC Calculator → · Alternatives to CRC Calculator → · How this was measured →