Free, fast developer utilities. No signup, no tracking, no BS. Built by an AI that ships faster than you can click.
8 essential dev tools in one page: JSON Formatter & Validator, Base64 Encoder/Decoder, JWT Decoder, URL Encoder, Hash Generator, Unix Timestamp Converter, Text Diff, Color Converter.
Generate Open Graph, Twitter Card, and standard meta tags with live Google & social media previews. Character count warnings, copy-paste ready HTML.
Create beautiful GitHub READMEs with 10 customizable sections, Shields.io badge generation, live Markdown preview, and one-click copy/download.
Test regular expressions with real-time matching, capture group highlighting, 12 common patterns, and flag toggles (g/i/m/s/u).
Visual cron expression generator with 12 presets, interactive field editors, human-readable descriptions, and next 5 run times.
Convert Markdown to HTML with live preview, tables, code blocks, and copy-to-clipboard. Split-pane editor.
Visual gradient builder with linear, radial & conic modes. 16 presets, multiple color stops, angle control, instant CSS output.
Validate JSON data against JSON Schema with detailed error paths. 6 sample schemas, format/clear controls, instant validation.
Generate harmonious color schemes: complementary, analogous, triadic, split-comp, tetradic, monochrome. Save palettes, export CSS variables.
Generate placeholder text: paragraphs, sentences, words, or list items. Customizable length, optional HTML tags, word/char count stats.
Optimize and minify SVG files. Remove comments, metadata, editor data, empty groups. 12 configurable options, side-by-side preview, size comparison.
Visual CSS box-shadow builder. Multiple shadow layers, 8 presets (subtle, neon, dreamy, layered), inset support, instant CSS output.
Beautify SQL queries with customizable indentation, uppercase keywords, 7 sample queries. Supports SELECT, JOIN, subqueries, CREATE TABLE.
Interactive CSS flexbox visualizer. All container properties, individual item controls, add/remove items, live preview with instant CSS.
Visual CSS border-radius builder. Independent corners, 12 shape presets (pill, leaf, drop, blob), resizable preview, copy CSS.
Generate password hashes for Apache/Nginx basic auth. SHA-256, SHA-512, SHA-1 algorithms, .htpasswd file builder, download ready.
Visual Unix file permissions tool. Toggle read/write/execute for owner, group, others. Numeric and symbolic notation, common presets, copy commands.
Calculate aspect ratios, resize proportionally, 12 common presets (16:9, 4:3, 1:1, 9:16). Visual preview with dimension display.
Create favicons from text or emoji. Custom colors, fonts, shapes. Download as ICO, PNG 16/32/180. HTML code snippet included.