Tool suite
A collection of free developer tools to make your life easier.
JSON Prettier
Format, validate and prettify JSON.
JWT Decoder
Decode, verify and analyze JWT tokens.
Regex Tester
Test, validate and debug regular expressions.
URL Parser
Parse a URL and extract its components.
SQL Formatter
Format and beautify SQL queries.
Text Diff Viewer
Compare text and highlight differences.
QR Generator
Generate QR codes for links and text.
XML/HTML Prettifier
Format and beautify XML or HTML code.
Time Converter
Convert time between different formats.
JS Editor
Write, run and debug JavaScript online.
Prompt Builder
Compose and structure reusable AI prompts.
Token Counter
Estimate token usage for LLM prompts.
Prompt Optimizer
Refine prompts for clearer model output.
System Prompt Generator
Generate strong system prompts from a goal.
AI JSON Schema
Build JSON schemas for structured outputs.
Embedding Inspector
Inspect and compare embedding vectors.
Model Comparator
Compare model capabilities side by side.