Text Revealer
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Add-on summary
Introduction This Firefox Extension adds a new popover that appears when seecting text. It shows additional information about the text you selected. Things like Wikipedia entries, dictionary definitions, and more.
How to Use Toggle the extension by using the new floating bottom at the bottom left of the page. Once activated, it will generate a popover view after a delay that can be configured in the extension options accessed by goint to Add-ons → Text Revealer → Options.
Acknowledgments
This is the Firefox port of Text Revealer by Jami Gibbs.
Add-on safety
Risk impact
Text Revealer requires a few sensitive permissions. Exercise caution before installing.
Risk likelihood
Text Revealer is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.