Legit.Show measured Under1MB's Security frame at 45/100. Security headers present: CSP. No HSTS. Served over HTTPS with a valid certificate.

How does Legit.Show measure Under1MB?

Legit.Show scores seven frames — Performance, Accessibility, Security, Privacy, Reliability, Standards and Discoverability — deterministically from the public surface (URL, HTTP headers, real Lighthouse), with no LLM in the scoring path. See legit.show/methodology.

Productivity

Under1MB

Last updated 2026-09-12 · benchmark measured 2026-09-12 — deterministic & reproducible

Browser-based image converter and compressor that processes files locally on your device.

71/100

7/7 frames

Top 71% of 14,148 measured · #34 of 41 in image compression tool

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.

Checked 2026-09-12 · scores move as sites change

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To cite this score: legit.show/s/under1mb-app/2026-09-12. That address never changes; this page moves with every re-measure.

Legit.Show scored Under1MB 71/100 on 2026-09-12, measured across all 7 frames from its public surface. legit.show/s/under1mb-app/2026-09-12

Is Under1MB production-ready?

Legit.Show scores Under1MB 71 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Under1MB (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 — 69/100
Accessibility — 100/100
Security — 45/100
How this compares across the catalogue: The Web Security Baseline
Privacy — 30/100
How this compares across the catalogue: The Privacy Gap
Reliability — 70/100
Standards — 92/100
Discoverability — 90/100

What we measured

Security headers present: CSP.
No HSTS.
Served over HTTPS with a valid certificate.
Real Lighthouse performance run — 574 ms to first byte.
Returns a proper 404 for unknown routes.
0 of 3 sampled routes reachable.
No privacy policy found.
Sets cookies / loads scripts with no consent prompt.

Who it's for

Photographers · Designers · Content creators · Teams needing batch processing · Privacy-conscious users

Pricing

Free Forever — unlimited conversions, compressions, resizes; Pro tier planned for automation and team features

Sources and updates

Description: Taken from under1mb.app's own website on 2026-09-12.
Operator: Under1MB, as named in under1mb.app'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 2026-09-12.

Put together from public information, without Under1MB's involvement. If anything here is wrong, tell us and a person will check it.

Visit Under1MB → · Alternatives to Under1MB → · How this was measured →