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Poster Size & Aspect Ratio Calculator

ExtensionTools
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Overview

Check image aspect ratio, 300 DPI print size, and compatibility with common poster formats.

Quickly check an image's aspect ratio, pixel dimensions, maximum print size at 300 DPI, and compatibility with common poster formats. Upload an image directly in the extension to see: • Image dimensions in pixels • Simplified aspect ratio • Maximum print size at 300 DPI • Compatibility with A4, A3, A2, A1 and popular metric and inch-based poster sizes • Whether each format is an exact fit, a good fit, or requires cropping Images are processed locally in your browser. The extension does not upload images, use a backend, or require an account.

Details

  • Version
    1.0.0
  • Updated
    July 22, 2026
  • Size
    8.25KiB
  • Languages
    English
  • Developer
    Website
    Email
    support@yougotprints.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

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

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

Support

For help with questions, suggestions, or problems, visit the developer's support site

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