Developer Tools

CRC Calculator

Last updated 2026-07-29 · benchmark measured 2026-09-10 — deterministic & reproducible

Online tool to calculate, compare, and look up CRC checksums across 55 algorithms.

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To cite this score: legit.show/s/crc-calc-com/2026-09-10. That address never changes; this page moves with every re-measure.

Legit.Show scored CRC Calculator 67/100 on 2026-09-10, measured across 5 of 7 frames from its public surface. legit.show/s/crc-calc-com/2026-09-10

Is CRC Calculator production-ready?

Legit.Show scores CRC Calculator 67 out of 100 — the simple average of its 5 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 Discoverability; its weakest is Privacy. 5 of the seven frames returned a score; Performance and Accessibility were not measurable on this service and are recorded as null — not as zero. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

• Performance — not measurable on this service (null — not scored as 0)
• Accessibility — not measurable on this service (null — not scored as 0)
• Security — 60/100
  How this compares across the catalogue: The Web Security Baseline
• Privacy — 25/100
  How this compares across the catalogue: The Privacy Gap
• Reliability — 75/100
• Standards — 75/100
• 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 — 307 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

Sources and updates

Description

Taken from crc-calc.com's own website on 2026-07-29.

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 2026-09-10.

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

Visit CRC Calculator → · Alternatives to CRC Calculator → · How this was measured →