Free Developer Tools

13 free developer tools — code formatter, minifier, JSON to Zod, diff viewer, crontab visualizer, and more.

Paste raw JSON — format, validate, minify, or copy. Syntax errors are highlighted instantly.

Test regular expressions against text in real-time. See all matches with their positions.

Compare two texts side by side and see the differences highlighted.

Convert between Unix timestamps and human-readable dates. See current timestamp in real-time.

Create beautiful CSS gradients with live preview. Linear, radial, and conic — copy the code.

Create CSS box shadows visually with live preview. Add multiple layers, toggle inset, copy code.

Format, beautify, and minify SQL queries instantly. Supports multiple dialects.

Build cron expressions visually. See plain English description and next 5 scheduled runs.

Format and beautify JS, TypeScript, CSS, HTML, JSON, GraphQL. Same engine used by millions of developers.

Compare two code snippets side by side with syntax highlighting. 40+ languages supported.

Minify JavaScript, CSS, and HTML. Remove comments and whitespace. See exact file size savings.

Paste JSON, get TypeScript Zod schema. Handles nested objects, arrays, unions, and nullable types.

Paste a cron expression — see the next 20 run times on a visual timeline with plain English description.