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How The Heck Does JPEG Work?
Last updated 2026-08-10 · benchmark measured 2026-08-10 — deterministic & reproducible
An interactive exploration of how JPEG works: from the Discrete Cosine Transform to quantization and Huffman coding.
63/100
Legit Benchmark — the simple average of 7 measured frames. Frames we could not measure are left out of the average, never counted as zero. Every frame is shown below with its evidence.
Is How The Heck Does JPEG Work? production-ready?
Legit.Show scores How The Heck Does JPEG Work? 63 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on How The Heck Does JPEG Work? (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 — 60/100
- Accessibility — 96/100
- Security — 25/100
- Privacy — 0/100
- Reliability — 100/100
- Standards — 93/100
- Discoverability — 70/100
What we measured
- No Content-Security-Policy and no HSTS.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 780 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.
- Discoverable: sitemap, OpenGraph image.
Visit How The Heck Does JPEG Work? → · How this was measured →