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 Token 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 — Table to Markdown
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.