Email Extractor
Find, clean, deduplicate, sort, copy, and download email addresses from pasted text.
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UUID Generator
Generate one or many cryptographically random UUID v4 identifiers in your browser.
Hash Generator
Create SHA-256, SHA-384, or SHA-512 hashes from text using the Web Crypto API.
JWT Decoder
Inspect JWT header and payload data locally without uploading or verifying the token.
JSON to CSV Converter
Convert arrays of JSON objects into clean downloadable CSV data.
HTML Entity Encoder & Decoder
Encode text safely for HTML or decode HTML entities back into readable text.
CSS Formatter & Minifier
Beautify readable CSS or remove unnecessary whitespace for production use.
URL Parser & Query Inspector
Break a URL into its protocol, host, path, query parameters, and fragment.
URL Slug Generator
Turn titles and phrases into clean SEO-friendly URL slugs.
Aspect Ratio Calculator
Calculate image and video dimensions while preserving the original aspect ratio.
CSS Grid Builder
Build responsive auto-fit or fixed-column grids with a resizable preview and ready-to-copy CSS.
Flexbox Layout Builder
Explore alignment, wrapping, direction, and spacing with a live Flexbox layout preview.
Fluid Typography Calculator
Generate CSS clamp() font sizes that scale smoothly between your chosen viewport widths.
CSS Spacing Scale Generator
Create consistent linear or geometric spacing tokens for margins, padding, and gaps.
Color Palette & Shades Generator
Turn a brand color into ten useful tints and shades with exportable CSS variables.
Image Resizer & Compressor
Resize and compress JPEG, PNG, and WebP images locally, preview the result, and download.
SVG to CSS Background Converter
Encode SVG artwork as a CSS background-image data URL without uploading your source.
Placeholder Text Generator
Generate paragraphs, sentences, or an exact word count for layouts in plain text or HTML.
Robots.txt Generator
Build crawler directives, allowed exceptions, and sitemap references for your robots.txt file.
CSS Media Query Builder
Create responsive CSS queries with width ranges, orientation, and motion preferences.
AI Prompt Generator & Writing Guide
Build detailed prompts with task templates, context, examples, output formats, and a practical writing guide.
Prompt Checklist Reviewer
Inspect prompt structure with transparent local checks and create a revision brief.
AI Token & Cost Estimator
Estimate context usage and API costs using your own model limits and pricing.
AI Context Pack Builder
Organize reference material into a labeled context pack with sources and instructions.