BookScale

Overview

Visualize and compare book dimensions with standard formats.

BookScale helps you visualize book dimensions before buying. When browsing book pages on supported sites, click the ruler icon to see a visual comparison with standard formats like A4, A5, US Comic, Manga Tankobon, or BD Album. Compare spine thickness with everyday objects like a matchbox or coin. Save books to compare them side by side.

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Details

Version
1.1.0
Updated
January 7, 2026
Flag concern
Offered by
Petr Šimek
Size
31.27KiB
Languages
2 languages
Developer
Email
petr.simek@gmail.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes

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Measure page elements size in pixel with an easy-to-use ruler.

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Check the contrast between different colour combinations against WCAG standards

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View Goodreads ratings on Overdrive ebooks and audiobooks

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Shows image dimensions and format when hovering over images

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Musical Scales and Modes Quick Reference.

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Compare images by overlaying them on websites.

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Compare prices and save product details.

Image Aspect Ratio Resize Calculator

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Find the proportional dimensions of your image when you enlarge or reduce its size.

Responsive Viewer

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View any webpage in different device dimensions with custom sizing