Developer Tools
Web4 Browser
Last updated 2026-07-09 · benchmark measured 2026-07-09 — deterministic & reproducible
Web4 Browser is a fingerprint browser for managing multiple isolated browser profiles.
Is Web4 Browser production-ready?
Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Web4 Browser (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Privacy. The per-frame breakdown is public on the Legit.Show listing; the single overall production-readiness score is reserved for the verified maker.
The 7 Frames
- Performance — 69/100
- Accessibility — 94/100
- Security — 45/100
- Privacy — 0/100
- Reliability — 100/100
- Standards — 89/100
- Discoverability — 100/100
What we measured
- Security headers present: HSTS.
- No Content-Security-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 185 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.
Who it's for
Cross-border e-commerce teams · Advertising and social media managers · Automated testing teams · Data research teams · Multi-account managers
Pricing
Free plan (3 environments); Starter $9/mo (15 environments); Small Team $19/mo (55 environments); Popular $39/mo (125 environments); Scale Team $69/mo (250 environments); Custom enterprise pricing