How big is that?

Name: How big is that?
Author: vantezzen

By: vantezzen

"How big is that?" allows you to select any measurement online and see how big this measurement really is.

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Features & Capabilities

"How big is that?" allows you to select any measurement online and see how big this measurement really is.

Before using the extension, you will need to calibrate it to your display. This will ensure that all shown measurement have the right size.After that, simply select any measurement you find online, right-click on it and select "How big is that?". The extension will then show you a grey box representing the actual size of the selected object.

The full source code of this extension is available on https://github.com/vantezzen/howbigisthat, if you find any issues or have a question please visit https://github.com/vantezzen/howbigisthat/issues.

This extension needs the following permissions:

"Read and change all you data on the websites that you visit" to display the popup representing the size of the measurement.

User Growth & Download Statistics

Add-on

By:

vantezzen

Daily users:

Version:

1.3 Last updated: 2019-04-27

Version code:

3211161

Creation date:

2019-04-14

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

119.44KB

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-17

Compare stats and ranking:

Ranking

# 147,939 ▲ 3,186

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

vantezzen

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/how-big-is-that/

Website:

https://github.com/vantezzen/howbigisthat

Is How big is that? Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

How big is that? requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

How big is that? is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
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