Available tools
13 ready tools in this category.
Developer
Developer tools for JSON, JWT, Base64 and URLs
JSON, JWT, Base64, hash, UUID, URL, timestamp, and encoding tools. Use these focused ErgoKit tools to check public pages, inspect technical signals, or complete browser-local utility work without a noisy dashboard.
Input model
Server-side checks inspect public URLs transiently. Local utilities run in your browser.
Discovery
Category pages, tool pages, sitemap, llms.txt, and tools.json expose the same live tool catalog.
Developer tools
Use ErgoKit developer tools for JSON formatting, JWT decoding, Base64 conversion, hashing, UUIDs, URLs, timestamps, cron, and QR codes.
DNS Lookup
Look up A, AAAA, CNAME, MX, TXT, NS, CAA, and SOA records.
Redirect Chain Checker
Trace redirect hops, final URLs, loops, and avoidable redirect chains.
HTTP Status Checker
Check a URL's status code, final URL, response time, and selected headers.
CORS Tester
Test preflight and simple CORS responses without exposing response bodies.
JSON Formatter
Format, validate, minify, and sort JSON in the browser.
JWT Decoder
Decode JWT headers and payloads locally without sending tokens to a server.
Base64 Tool
Encode and decode Base64 text with Unicode and URL-safe support.
Hash Generator
Generate SHA-256 and SHA-512 hashes locally with Web Crypto.
UUID Generator
Generate UUID v4 values locally with browser-safe randomness.
Cron Generator
Build cron expressions and preview upcoming run times.
Timestamp Converter
Convert Unix timestamps, milliseconds, ISO dates, local time, and UTC.
URL Encoder/Decoder
Encode, decode, parse, and build URL query strings.
UTM Builder
Build campaign URLs with encoded UTM parameters.