Developer Tools
28 toolsJWT decoder, JSON formatter, regex tester, and 25+ developer utilities.
Category Overview
Developer Tools covers developer utilities for developers, QA teams, SREs, API integrators, and support engineers. The developer category groups browser-based helpers for tokens, schemas, formats, HTTP references, code generation, and debugging tasks.
Inside this category you can move between tools for jwt decode, json web token, jwt generate, and create jwt without losing context. That makes the page useful as both a discovery hub and a quick bookmark for repeat workflows.
Popular Tasks in This Category
Good Fit For
Browse All Developer Tools
JWT Decoder
Decode and inspect JWT tokens entirely offline.
JWT Generator
Generate JWT tokens with HS/RS algorithms using local keys.
UUID Generator
Generate UUID v4 and v7 identifiers.
ULID Generator
Generate ULID (Universally Unique Lexicographically Sortable Identifiers).
Cron Expression Builder
Build cron expressions with a visual interface.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
HTTP Status Code Lookup
Quick reference for all HTTP status codes and meanings.
MIME Type Lookup
Look up MIME types for file extensions and vice versa.
URL Encoder/Decoder
Encode and decode URL components and full URLs.
Querystring Parser
Parse and build URL query strings visually.
JSON Schema Validator
Validate JSON data against JSON Schema client-side.
OpenAPI Viewer
Drop YAML/JSON OpenAPI specs to view API documentation.
Postman Collection Viewer
View Postman collection JSON files with organized API endpoints.
HAR File Viewer
View and analyze HTTP Archive (HAR) network logs.
cURL to Fetch Converter
Convert between cURL commands and JavaScript fetch() calls.
SQL Formatter
Format and beautify SQL queries with proper indentation.
.env Editor
Parse and edit .env files with secret redaction.
Dockerfile Linter
Lint Dockerfiles against best practice rules.
Nginx Config Formatter
Format and beautify Nginx configuration files.
Regex Cheatsheet
Interactive regex cheatsheet with copy-ready patterns.
Color Contrast Checker
Check WCAG color contrast ratios for accessibility.
CSS Clamp Generator
Generate CSS clamp() values for fluid typography.
CSS Gradient Generator
Create beautiful CSS gradients with a visual editor.
SVG Optimizer
Optimize SVG files to reduce size using SVGO.
SVG Path Editor
Edit SVG path data with visual feedback.
JSON to TypeScript
Generate TypeScript type definitions from JSON data.
CSV to SQL
Generate SQL INSERT statements from CSV data.
Test Data Generator
Generate random test data with configurable schemas and seeds.