Developer Toolkit

Developers who need a fast formatter, encoder or validator without installing a CLI tool or pasting sensitive data into a random website. Every tool here runs entirely in the browser — nothing you paste is uploaded anywhere, except the two network checkers (HTTP Status Checker, DNS Checker), which fetch only the public URL or domain you provide through the same SSRF-protected request path used across the site.

Formatting and reading data: JSON Formatter, JSON Validator and Regex Tester for everyday debugging. Encoding and hashing: Base64 Encode, URL Encode and Hash Generator for the conversions that come up constantly when working with APIs and web protocols. Generating test data and identifiers: UUID Generator and Cron Expression Generator, useful when scaffolding a new service or scheduled job. Inspecting tokens and documents: JWT Decoder for reading a token's claims, and HTML Validator for catching markup errors before they reach production. Checking a live endpoint: HTTP Status Checker traces what a URL actually returns, and DNS Checker resolves its DNS records — both useful when debugging deployment or connectivity issues.

Pull a JSON API response into JSON Formatter to make it readable, then JSON Validator to confirm it's well-formed before writing a parser against it. Decode a JWT from an Auth header with JWT Decoder to check its claims without touching a debugger. Generate a UUID for a new database record, or a cron expression for a scheduled job, without looking up cron syntax again. After deploying, run HTTP Status Checker against the new endpoint and DNS Checker against the domain to confirm everything resolves correctly.