Frequently Asked Questions (FAQ)
Is Definer Free?
Yes, Definer is completely free to use.
There are no hidden costs or in-app purchases.
How Does Definer Make Money?
Definer is currently a free app that does not generate revenue.
There are no ads, no data collection, and no tracking.
In the future, there will be a premium subscription offering additional features and customization options.
How Can I Support Definer?
Join the Definer subreddit to share feedback, report bugs, and suggest new features.
You can also help by spreading the word about Definer to friends, family, and language learners in your community.
Definer Does Not Work?
If Definer isn't working properly, try these steps:
- Try reopening your tabs or restarting the browser. The bubble won't work in tabs that were open before you installed the extension.
- Try disabling other extensions temporarily. Sometimes, extensions can conflict with each other.
If nothing helps, let's troubleshoot together:
- Email: definer@lumetrium.com
- Reddit: Definer subreddit
Please mention which browser you're using when reporting an issue.
Can Definer Work on Mobile?
Definer works on Android browsers that support browser extensions, such as:
How to Use Definer on PDF?
There are multiple ways to use Definer with PDF files. You can read about all available methods here.
How to Use Definer on EPUB?
Definer can handle .epub files when you use an online reader like TTSU Reader.
Paywalled Pages Support?
Definer works on any webpage, including those behind paywalls.
Google Docs Support?
Definer cannot work in Google Docs.
This is a known limitation affecting many extensions because Google Docs renders its contents within a canvas element, which restricts extensions from accessing the text directly.
Workaround
Download your document by going to "File" → "Download" → "PDF document". Then open the PDF with Definer's built-in PDF reader to use the popup dictionary there.
Google Sheets Support?
Definer works with Google Sheets, but you need to enable "Editable blocks" in the trigger activation rules to be able to look up text in cells.
Definer in Incognito Mode?
Yes, but you need to explicitly allow it. Go to your browser's extensions page and enable the "Allow in Incognito" option for Definer.
Can Definer Work Offline?
Definer requires an internet connection for most of its built-in sources to work.
However, you have offline options:
- Use the Custom source to display local content or content from your local network
- Use the AI source with locally installed models through Ollama or LM Studio
Is Definer Open-Source?
Definer is not open-source.
There are no immediate plans to make it open-source.
Why Does Definer Need Permission to Read and Change Data on Websites?
Permission to access data on websites is a technical requirement for Definer to function. This permission is necessary when you select text on a page for Definer to show definitions or provide information.
For more details about each permission and how they're used, please read Definer's Privacy Policy.
Is Definer Safe?
Platforms like the Chrome Web Store and Firefox Add-ons conduct regular reviews of listed extensions. Definer has been in the extensions catalogs for years (since June 20th, 2021) and has earned a good reputation and can be trusted.
Mozilla also requires developers to submit their source code for every update, and they have manually reviewed Definer's code.
If you're technically inclined, you can also inspect what an extension does yourself. Extensions' code is not compiled into an unreadable format, as both Chrome and Firefox policies prohibit that.
This means anyone with some technical knowledge can examine it and spot anything suspicious.
Safari Version?
Safari is not supported, and there are no plans to develop a Safari version.
Kindle Version?
Definer is not compatible with Amazon Kindle, and there are no plans for Kindle support at this time.
Word History and Anki?
Definer does not currently have a word history feature or built-in Anki integration, but they're coming soon! Both are popular requests and are on the development roadmap.