Legit.Show measured PairOnce's Security frame at 100/100. Security headers present: CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy. Served over HTTPS with a valid certificate.

How does Legit.Show measure PairOnce?

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.

Developer Tools

PairOnce

Last updated 2026-11-11 · benchmark measured 2026-11-11 — deterministic & reproducible

Browser-to-browser file transfer between devices, no app or account needed.

99/100

7/7 frames

Top 1% of 19,084 measured · #1 of 35 in file transfer service

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 2026-11-11 · scores move as sites change

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To cite this score: legit.show/s/paironce-com/2026-11-11. That address never changes; this page moves with every re-measure.

Legit.Show scored PairOnce 99/100 on 2026-11-11, measured across all 7 frames from its public surface. legit.show/s/paironce-com/2026-11-11

Is PairOnce production-ready?

Legit.Show scores PairOnce 99 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on PairOnce (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 — 95/100
Accessibility — 100/100
Security — 100/100
How this compares across the catalogue: The Web Security Baseline
Privacy — 100/100
How this compares across the catalogue: The Privacy Gap
Reliability — 100/100
Standards — 97/100
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 — 147 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

Mobile users · Desktop users · Cross-device sharers · Privacy-conscious users · Teams on same network

Pricing

Free; optional Pro plan $3.99/month or $29.99/year for higher limits (10 GB files, 5 GB relay data/month)

Sources and updates

Description: Taken from paironce.com's own website on 2026-11-11.
Operator: Yiheng Han, as named in paironce.com'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 2026-11-11.

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

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