Developer & Design Tools
Access free developer and designer tools for JSON formatting, color palettes, and code generation. Debug and format code instantly online with total privacy.
Developer & Design Tools Tools
Password Generator
Generate highly secure random passwords with customizable parameters and strength analysis.
QR Code Generator
Create custom QR codes for texts, URLs, WiFi networks, phone numbers, and emails.
JSON Formatter & Validator
Prettify, minify, validate, and explore complex JSON objects in an interactive node tree.
Palette & Contrast Checker
Generate color schemes and test text-to-background contrast using official WCAG guidelines.
Favicon Generator
Generate standard web favicons and manifest files instantly.
Open Graph (OG) Generator
Design beautiful Open Graph images for social media sharing.
Fake Data Generator
Generate mock JSON, SQL, or CSV data for software testing.
Median Calculator
Calculate statistical median, sorted range, quartiles (Q1/Q3), and IQR.
Mean Calculator
Calculate Arithmetic, Geometric, and Harmonic Means along with standard deviation.
Mod (Modulo & Mode) Calculator
Calculate remainder (A mod B) or statistical mode frequency distribution.
Local-first by design
Every tool on this page runs entirely in your browser. Your files and data never leave your device — no uploads, no server processing, no tracking. Works offline after first load.