👕 FitCheck

Stop wasting money on returns. Get the right clothing size, first time.

Download for Chrome View on GitHub

Why FitCheck?

Smart size recommendations based on YOUR measurements

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Smart Recommendations

Analyzes size guides and matches them to your body measurements with 70-100% confidence scores.

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100% Private

Your measurements never leave your device. No cloud, no tracking, no data collection. Guaranteed.

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Works Instantly

Enter measurements once. Get recommendations on every product page automatically.

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Free Forever

No subscriptions, no hidden costs. Open source and community-driven.

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Fit Warnings

Alerts you if something might be tight, loose, or between sizes.

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Multi-Site Support

Works on ASOS, Zara, Boohoo, and more. New sites added regularly.

How It Works

Three simple steps to perfect sizing

1

Enter Measurements

One-time setup: bust/chest, waist, hips, height (takes 30 seconds)

2

Shop Normally

Browse your favorite sites. FitCheck works in the background.

3

Get Recommendations

See your perfect size on every product page with confidence scores.

Supported Sites

Works on your favorite fashion retailers

More sites added regularly. Request a site

🔒 Your Privacy is Guaranteed

FitCheck stores your measurements locally on your device using Chrome's secure storage. Your data NEVER leaves your computer. No cloud servers, no analytics, no tracking. We can't see your data even if we wanted to - we have no servers.

Open source = full transparency. Audit the code yourself on GitHub.

Ready to stop wasting money on returns?

Join thousands of shoppers getting the right size, first time.

Get FitCheck Free