Send browser requests, inspect bounded responses, and save sanitized request definitions.
HTTP & API Tools
Runs in your browser
No account required
The browser is a useful place to reproduce frontend HTTP behavior because it applies real CORS, mixed-content, and private-network restrictions. It cannot bypass those restrictions or replace server-side testing.
Tools in this collection
Convert supported cURL commands to Fetch, Axios, Python, Go, Java, and C#.
Assemble common methods, headers, and JSON bodies.
Analyze pasted CSP, HSTS, CORS, cookie, and policy headers.
Fetch HTML through the proxy and inspect SEO-relevant page signals.
Inspect application/ld+json structured data returned in HTML.
Look up status-code meaning while debugging a response.
Practical guides
Translate a reproducible request without losing method, headers, or body.
Separate network failures, preflight failures, and HTTP errors.
Review response hardening after the request works.
Continue exploring
Security tools
Inspect signatures, secrets, certificates, and response policy.
SEO tools
Inspect fetched HTML for metadata and structured data signals.
DevOps tools
Review the deployment configuration behind an API.
Content reviewed .
