Developer Tools
IO Tools
Last updated 2026-08-04 · benchmark measured 2026-08-04 — deterministic & reproducible
A collection of free browser-based tools with optional paid upgrades for heavy use.
Is IO Tools production-ready?
Legit.Show scores IO Tools 92 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on IO Tools (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Security; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 76/100
- Accessibility — 96/100
- Security — 100/100
- Privacy — 75/100
- Reliability — 100/100
- Standards — 100/100
- 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 — 162 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 built it
Thien Nguyen · product account @io_tools
Who it's for
Developers · Designers · Students · Everyone
Pricing
Free forever; $12 one-time to remove ads; $19/month for Builder plan (50,000 credits, higher rate limits, embeds)