Developer Tools
Tools for every dev workflow
Free, fast, and 100% browser-based. No sign-up, no tracking — your data never leaves your device.
JWT Decoder
Decode and inspect JWT tokens. See header, payload, and expiry status instantly.
Open toolJSON Formatter
Format, validate, and minify JSON. Spot syntax errors with line/column info.
Open toolRegex Tester
Build and test regular expressions with real-time match highlighting.
Open toolDockerfile Linter
Analyze your Dockerfile for best-practice issues, security risks, and size tips.
Open toolBase64 Encoder
Encode and decode Base64 strings. Supports URL-safe variant.
Open toolTimestamp Converter
Convert Unix timestamps to readable dates and vice versa. Shows relative time.
Open toolUUID Generator
Generate v4 (random) or v1 (timestamp) UUIDs in bulk with format options.
Open toolHTTP Status Codes
Look up any HTTP status code — description, behaviour, and when to use it.
Open toolCron Parser
Parse cron expressions into plain English. See the next 5 scheduled runs.
Open toolcurl → fetch
Convert curl commands to JavaScript fetch() calls with headers, body, and auth.
Open toolSQL Formatter
Format SQL queries for PostgreSQL, MySQL, SQLite, T-SQL, and PL/SQL.
Open toolMarkdown Previewer
Live Markdown preview with GFM — tables, code blocks, task lists, HTML export.
Open toolHashtag Generator
Generate platform-optimised hashtags for Twitter/X, Instagram, LinkedIn, YouTube, and TikTok.
Open toolAll tools run entirely in your browser. Nothing is sent to any server.