Extension Name

Your extension’s name is critical. It shows up everywhere—in search results, on addons.mozilla.org, and in the browser itself. It’s sometimes one of the few pieces of information that a user has to determine whether or not they are interested in what you built.

Research shows that people really do take an extension’s name into account when making installation decisions. And, what you put into the extension name field becomes your URL on addons.mozilla.org.

Between your extension name and subtitle, you have up to 70 characters to use—that’s because 70 is the max character limit for your headline in external search results. It’s best to keep your extension name shorter so you have more characters left over for your subtitle.

Requirements

Minimum length: 2 characters
Maximum length: 70 characters between extension name and subtitle

Do This

Make it memorable
Make it unique
Keep it short for better display on smaller screens
Make it easy to read and say
Give an idea or hint about what your extension does with an illustrative word or metaphor

Examples:

An extension that saves passwords is called Remembear

An extension that puts a cat on new tabs is called Tabbycat

An extension that improves YouTube is called Enhancer for YouTube

Not This

Don't include a description. Save these details for your subtitle and description.

Example: Videomix, a fast video downloader

Don't stuff it with keywords. Google is smarter than this and it just makes your extension look untrustworthy.

Example: Youtube Download Videos, Convert, Media, MP3, MP4, Free.

Don't use random words to differentiate, like “Barbara Notetaker.” Instead, create a descriptive name that is not already in use, like “Instant Notetaker.”
Don't call it something with no meaning, like “hoyv.” While the name “hoyv” doesn’t work, the name “uBlock Origin” for an ad-blocking extension does because it contains the word “block”.
Don't include "WebExtension," “Firefox,” or “Mozilla."
Don't include version number or a previous name.

Example: Weatherchanger (fix version)

Don't make it hard to read or say.

Example: TrLrs! Tab Changer.

Stuck? Try this.

What problem does your extension solve? You had a reason for creating that extension...what was it? Write that down.

Take the popular extension, Remembear, as an example. You can imagine the creator of this extension writing, "I am tired of having to remember all of my passwords for the web. And I worry that these passwords will get stolen. I want a simple way to save and secure my passwords so they are always at my fingertips. And I don’t want the experience to be an unpleasant, security-laden process. Let’s make it friendly and easy.

2. Pull out the key words (nouns, adjectives, verbs) and phrases from your description and create a word list. Add other words that come to mind based on those words, including synonyms.

Remembear:

Tired, remember, passwords, worry, stolen, simple, save, secure, at fingertips, friendly, easy

3. Consider adding a person, place, or thing that summarizes or serves as a metaphor for what your extension does.

Remembear: Saving and protecting passwords is not very unique from what other extensions do, so finding a good metaphor might help create a unique name. What animal, place, or thing makes me think about safety and security? How about a mother bear? Mother bears are notorious for protecting their young.

4. Take that list of words and try different combinations until you land on something that feels right.

Remembear:

Protect passwords with a mother bear

Protect passwords with a bear

Remember passwords with a bear

Remembear

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