Free developer tools, training, and videos.
Everything you need to build better frontend skills. Use free tools, practice with curated training, and learn from upcoming videos.
JSON → TypeScript
interface User {
id: number;
name?: string;
status: "active" | "inactive";
}
JSON Formatter
✓ Valid JSON
Tools
Free Developer Tools
Fast, simple, and free tools that make your day-to-day developer workflow easier.
JSON to TypeScript
Convert JSON objects to clean TypeScript interfaces or types.
Open Tool →
JSON Formatter
Format and beautify JSON data instantly with proper indentation.
Open Tool →
JSON Minifier
Minify JSON by removing unnecessary whitespace and reduce its size.
Open Tool →
Object Diff Viewer
Compare JSON objects and quickly see what changed.
Open Tool →
JWT Decoder
Decode JWT tokens and inspect payload claims instantly.
Open Tool →
Regex Tester
Test JavaScript regular expressions and inspect matches.
Open Tool →
Training
Frontend Training
Free training tracks to level up your frontend development skills.
Videos
Videos coming soon
Practical videos and walkthroughs to help you learn frontend concepts, use tools faster, and prepare for interviews.
DevDrills is free.
Premium tools and training can come later. For now, the goal is to build useful things.