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Web & API

6 tools

Build curl commands, inspect HTTP, and debug API requests in your browser

cURL Command Generator & Builder

web

Build curl commands in your browser — set method, headers, auth, and body, get a copy-ready command instantly. Presets for Bearer, POST JSON, file upload. Free, private, no signup.

htpasswd Generator — bcrypt, Apache MD5 (apr1) & Basic Auth

web

Generate htpasswd entries with bcrypt, Apache MD5 (apr1), SHA-1 & more. Get ready-to-paste Apache, nginx & Docker config. 100% in your browser — no upload.

Open Graph & Meta Tag Generator

web

Generate Open Graph, Twitter Card & SEO meta tags with a live Google, Facebook & X preview. 100% free, in-browser, no signup — copy & paste the code.

Nginx Location Tester — Why That Block Wins

web

See which nginx location block wins — and why every other block lost. Free location match tester for =, ^~, ~ and ~*, running entirely in your browser.

IPv4 Subnet Calculator

web

Free IPv4 subnet calculator: enter 192.168.1.130/26 for the network address, broadcast, usable host range, netmask and wildcard, plus paste-ready Cisco and Linux config.

traceparent Decoder — W3C Trace Context

web

Stop counting hex digits. Free online traceparent decoder — runs in your browser, nothing uploaded. Trace ID, span ID, all 8 trace-flags bits, tracestate check, Datadog/X-Ray/B3 conversion.

Frequently Asked Questions

What are web & api tools?
Build curl commands, inspect HTTP, and debug API requests in your browser These tools help developers work more efficiently with common tasks in this area.
Are these tools free to use?
Yes, all tools on Go Tools are completely free to use. There are no subscriptions, no sign-ups required, and no hidden fees.
Is my data secure?
All processing happens directly in your browser. Your data never leaves your device and is not sent to any server. This ensures maximum privacy and security for all your sensitive information.