Nullbrains

Nullbrains is a Firefox add-on publisher. It has published 3 Firefox add-ons, including WebP / Avif image converter. Its Firefox add-ons have reached 21,841 users.

Most used add-on

WebP / Avif image converter (v1.2.10)

Convert WebP, Avif and other image types before saving and store them in an orderly fashion. All based on your preferences and fully automatic. Simply right click on an image and use the "Convert and save as" button. More details in the description.

3.99 (110) 20,120

Least used add-on

DuoKeyboard (v1.5.0)

Adds automatic keyboard selection for duolingo.com based on user preferences.

3.42 (24) 345

Highest rated add-on

Let's get color blind (v1.0.1resigned1)

Simulates information a color blind person receives and/or adds a daltonization filter. This addon can be used for testing a website accessibility for the color blind and / or to educate (yourself) on the topic of color blindness.

4.69 (16) 1,376

Lowest rated add-on

DuoKeyboard (v1.5.0)

Adds automatic keyboard selection for duolingo.com based on user preferences.

3.42 (24) 345

Active extensions

#1, Let's get color blind

Nullbrains

Simulates information a color blind person receives and/or adds a daltonization filter. This addon can be used for testing a website accessibility for the color blind and / or to educate (yourself) on the topic of color blindness.

4.69 (16)

1,376

#2, WebP / Avif image converter

Nullbrains

Convert WebP, Avif and other image types before saving and store them in an orderly fashion. All based on your preferences and fully automatic. Simply right click on an image and use the "Convert and save as" button. More details in the description.

3.99 (110)

20,120

#3, DuoKeyboard

Nullbrains

Adds automatic keyboard selection for duolingo.com based on user preferences.

3.42 (24)

345

Stats trends