Convert, format and validate structured data. Built for high-intent developer workflows.
Paste or upload CSV. Get clean, formatted JSON with header detection and options.
Beautify or minify JSON with clear error locations and one-click copy.
Deep syntax inspection and error location with clear diagnostic summaries.
Turn valid JSON into readable, indented YAML documents instantly.
Find malformed rows, inconsistent column counts, and missing headers.
Convert text to Base64 and back with URL-safe options and utf-8 support.
Encode or decode URLs and inspect individual query parameters.
Generate configurable version 4 UUIDs, API keys, and cryptographically secure tokens.
Convert special characters to HTML named, decimal, or hex entities and vice versa.
Format complex SQL queries (PostgreSQL, MySQL, SQLite) with customizable indentation and keyword casing.
100% private in-browser JWT debugger. Decodes header & payload, verifies signatures, and computes live relative token expiration.
Convert raw DevTools cURL commands into modern JavaScript fetch, Axios, Python requests, Go net/http, and TypeScript.
Estimate prompt tokens and compare costs across GPT-4o, Claude 3.5, Gemini 2.0, and DeepSeek with volume multipliers.
Preview social share cards for Twitter/X, LinkedIn, Facebook, and Google Search. Generates valid HTML meta tags.
RFC 9309 parser, AI crawler control center (GPTBot, ClaudeBot, Perplexity), and URL access simulator.
Zero-knowledge encrypted notes and secrets with automatic burn-after-reading and AES-256-GCM.