💻

Developer Hub

JSON, regex, SQL, JWT, CSS and everyday developer utilities.

20 free tools · no signup, ever

Everyday developer utilities — JSON formatting, regex testing, JWT decoding, SQL generation, CSS tools and a full HTTP status reference. Built for quick, no-context-switch lookups while you're actually coding.

🔡
Base64 Encoder/Decoder
Encode or decode any text in Base64
🆔
UUID Generator
Generate random UUIDs for development
{}
JSON Formatter
Format, validate and beautify JSON
S
SQL Query Generator
Describe what you need in plain English and get SQL instantly.
R
Regex Generator
Describe your pattern in plain English and get regex instantly.
B
Bug Report Generator
AI writes clear professional bug reports from your description.
P
PRD Generator
AI writes Product Requirements Documents from your idea.
U
User Story Generator
AI writes Agile user stories from feature descriptions.
J
JWT Decoder
Decode and inspect JSON Web Tokens instantly. No data sent to servers.
H
Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes instantly.
R
Regex Tester
Test and debug regular expressions with live matching.
Y
YAML to JSON Converter
Convert YAML to JSON and JSON to YAML instantly.
X
XML Formatter
Format, beautify and validate XML code instantly.
C
Cron Expression Generator
Build cron job schedules visually with plain English descriptions.
📦
CSS Minifier
Minify CSS code to reduce file size. Paste and compress instantly.
📦
JavaScript Minifier
Minify JavaScript code instantly to reduce file size.
💠
SVG Viewer and Editor
Paste SVG code to preview and edit it live, then download the file.
🗃️
SQL Query Generator
Describe what you want, get a ready-to-run SQL query.
📐
CSS Flexbox Generator
Build flexbox layouts visually with live preview.
🔢
HTTP Status Code Reference
Search and look up any HTTP status code.
Want an AI-powered second opinion?
AI Analyst reads your actual content and gives you specific, evidence-based feedback — not a guess.
Try AI Analyst →
Frequently Asked Questions
Is it safe to paste tokens or credentials into these tools?
Formatting and decoding tools (JSON, JWT, regex, YAML) run entirely in your browser — nothing is sent to a server. As general practice, still avoid pasting production credentials into any online tool.
Does the AI SQL generator work with my specific database?
It generates standard SQL compatible with MySQL, PostgreSQL and SQLite — always review generated queries against your actual schema before running them, especially anything that modifies data.
Can I use these tools without an internet connection?
Client-side tools like the JSON formatter, regex tester and color tools work offline once the page has loaded. AI-powered tools like the SQL generator need a connection.
Explore other hubs