One tool. One file. Open and use.

Visually create and customize CSS cubic-bezier() easing functions with a live animation preview.

Calculate and simplify aspect ratios instantly. Supports common presets and outputs decimal ratio and CSS padding-bottom values.

Design CSS box shadows visually with live preview, presets, and copy-ready output.

Visually create complex CSS clip-path shapes and instantly copy the generated code.

Extract dominant colors and generate beautiful palettes directly from images in your browser.

Load multiple commands and copy them one at a time with a terminal-style interface.

Build and customize cron schedules with presets, validation, explanations, and upcoming run previews.

Convert between Hex, RGB, HSL, HSLA, and OKLCH color formats instantly with a visual picker.

Build CSS Grid layouts visually with configurable columns, rows, gap, and sizing options.

Instantly convert between px, rem, em, vw, vh, and percentages.

Generate a complete favicon pack and integration tags from any image, offline.

Experiment with Flexbox properties visually and copy the generated CSS.

Validate GitHub Personal Access Tokens with a terminal-style UI that displays user identity and scopes.

Validate GitHub Personal Access Tokens with a clean, straightforward interface.

Validate GitHub Personal Access Tokens with a retro terminal themed interface.

Generate sleek, frosted-glass UI effects for your components.

Compare two JSON objects semantically with added, removed, and modified value highlighting.

Format, validate, and minify JSON locally in your browser.

Decode and inspect JSON Web Tokens — header, payload, claims, and expiry — entirely in your browser.

Generate essential HTML meta tags with a live preview and copy-ready code.

Create soft, extruded UI elements with customizable neumorphic shadows.

Validate Open Graph tags from any public URL with social previews, health score, and JSON export.

Generate Open Graph meta tags with a live tri-platform preview (Facebook, Twitter, LinkedIn) and copy-ready HTML.

Analyze meta tags, social previews, and SEO metadata for any URL with actionable scores.

Generate unique, collision-free variation color schemes based on color theory metrics, offline.

Generate highly secure, cryptographic random passwords instantly. 100% offline, privacy guaranteed.

Visually create CSS border-radius values with live preview, presets, and copy-ready CSS output.

Test responsive layouts instantly via URL or raw HTML sandbox with intelligent scaling.

Visually build, manage, and export standard-compliant robots.txt files with live syntax highlighting.

Preview how Twitter/X cards appear with live updates for Summary and Summary Large Image layouts.

Generate random v4 UUIDs instantly, offline.