Dev & API
Tools in the Dev & API category.
JSON Formatter
Format, minify, and validate JSON. For API development and debugging.
Base64 Encode/Decode
Encode and decode text to Base64. For API integration and data transfer.
URL Encode/Decode
Encode and decode URL. For query strings and API params.
JWT Decode
Decode JWT tokens to view header and payload. For API auth debugging.
Hash Generator
Generate SHA-256, SHA-384, SHA-512 hashes.
Markdown Formatter
Normalize full-width→half-width, fix spacing. HackMD-compatible.
HTML Escape/Unescape
Escape and unescape HTML special chars. XSS prevention, text display.
Password Generator
Generate random strong passwords. Length and character types configurable.
YAML ↔ JSON Converter
Convert between YAML and JSON. For config files and API.
JSON to CSV Converter
Convert Web API JSON to CSV for Excel.
Markdown Table Generator
Convert Excel paste to Markdown table syntax.
SQL Formatter & Minifier
Format SQL with indentation or minify to one line. Uppercase keywords option included.
LLM Token Counter
Estimate LLM token counts in real time. GPT-4/Claude/Gemini with API cost approximation.
Escape Sequence Converter
Escape/unescape newlines and tabs.
.env Formatter
Format .env by key order.
MD5 Hash Generator
MD5 hash. Legacy use only.
Lua Formatter
Format Lua. Indent.