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Free Tools

Developer tools,
no strings attached.

Browser-based utilities built by the team at MarkupFox. No signup, no server, no tracking. Your code and files never leave your device.

Formatting
HTML Formatter

Clean up minified or AI-generated HTML. Configurable indentation.

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Performance
CSS Minifier

Remove whitespace, comments, and redundant code. Typically 30–70% smaller.

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Units
PX → REM Converter

Convert pixel values with a Tailwind spacing reference alongside.

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Images
Base64 Image Encoder

Drag and drop. Get a data URI for inline embedding.

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SEO
Meta Tag Generator

SEO + Open Graph + Twitter Card with live SERP preview.

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Accessibility
Color Contrast Checker

WCAG AA/AAA contrast ratio for any two colors, with a live preview.

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From MarkupFox

We write code like this every day.

MarkupFox converts Figma, PSD, and XD designs into pixel-perfect HTML, React, WordPress, and Shopify code. Hand-coded, W3C-validated, SEO-optimised.