FitCheck by cloanic
Find your best clothing size on any retail site by matching your measurements to page size charts instantly.
ExperimentalExperimental
Available on Firefox for Android™Available on Firefox for Android™
Extension Metadata
About this extension
FitCheck helps you choose the right size faster while shopping online.
Enter your body measurements once, open a product page, and click Check My Fit. FitCheck detects available size-chart information on the page and compares it with your saved measurements to recommend a likely best size.
What you get
- A recommended size based on chart ranges
- Confidence level for the recommendation
- Measurement-by-measurement fit breakdown
- Alternative size suggestion when relevant
- Automatic centimeter/inch handling for chart comparisons
How it works
- You enter measurements in the extension popup (for example: chest, waist, hips, inseam, shoulder, neck, height).
- On demand, FitCheck reads the current product page for size-chart tables and fit-related chart structures.
- FitCheck runs local matching logic to map your measurements to chart ranges and displays the result in plain language.
Designed for real shopping flow
- Works across many retailer domains
- Built for quick repeated checks
- Keeps your saved measurements locally for convenience
Privacy and data handling
- Measurements and preferences are stored locally in your browser.
- No account required.
- No ads and no sale of personal data.
Enter your body measurements once, open a product page, and click Check My Fit. FitCheck detects available size-chart information on the page and compares it with your saved measurements to recommend a likely best size.
What you get
- A recommended size based on chart ranges
- Confidence level for the recommendation
- Measurement-by-measurement fit breakdown
- Alternative size suggestion when relevant
- Automatic centimeter/inch handling for chart comparisons
How it works
- You enter measurements in the extension popup (for example: chest, waist, hips, inseam, shoulder, neck, height).
- On demand, FitCheck reads the current product page for size-chart tables and fit-related chart structures.
- FitCheck runs local matching logic to map your measurements to chart ranges and displays the result in plain language.
Designed for real shopping flow
- Works across many retailer domains
- Built for quick repeated checks
- Keeps your saved measurements locally for convenience
Privacy and data handling
- Measurements and preferences are stored locally in your browser.
- No account required.
- No ads and no sale of personal data.
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Permissions and data
Required permissions:
- Access browser tabs
- Access your data for all websites
Optional permissions:
- Access your data for all websites
Required data collection, according to the developer:
- Browsing activity
- Website content
Optional data collection, according to the developer:
- Technical and interaction data
More information
- Version
- 2.0.0
- Size
- 25.89 KB
- Last updated
- 6 days ago (May 8, 2026)
- Related Categories
- License
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Tags
- Add to collection