How to Change the Reading Language and Accents in Reader Engine

When using text-to-speech tools, having the right dialect and regional accent makes a massive difference in how natural the voice sounds. Listening to British literature read with a standard American accent, or practicing European Spanish with a Latin American cadence, can feel mismatched.

The Reader Engine extension for Mozilla Firefox lets you switch voices and regional accents in seconds. Your preference saves automatically and applies instantly to every webpage you browse.

Here is how to customize your reading voice and regional dialects in Reader Engine.

Step 1: Open the Reader Engine Extension Popup

• Locate the Firefox browser toolbar at the top right of your screen.
• Click the Reader Engine (🎧) icon.
• A clean settings popup menu will open directly below the extension icon.

Step 2: Choose Your Language and Regional Accent

Inside the popup, you will see the Reading language dropdown selector. Click the dropdown to explore the organized language groups:

• English:
  • English (United States 🇺🇸): Ideal for standard North American pronunciation and business tech articles.
  • English (United Kingdom 🇬🇧): Ideal for British English cadence and UK news sites.
• Spanish:
  • Spanish (Latin America 🇲🇽): Standard Latin American accent.
  • Spanish (Spain 🇪🇸): European Peninsular Spanish.
• Portuguese:
  • Portuguese (Brazil 🇧🇷) or Portuguese (Portugal 🇵🇹).
• Other Languages:
  • French (fr-FR), German (de-DE), or Italian (it-IT).

Click on the specific dialect you want to use.

Step 3: Check the Instant Confirmation Notice

• You do not need to click a manual save button.
• As soon as you select your language, a green confirmation label reading ✓ Saved will appear briefly beneath the dropdown.
• Reader Engine stores your choice in your browser storage instantly.

Step 4: Test Your New Accent on Any Page

• Click back onto your webpage to close the popup.
• Select a sentence with your mouse cursor.
• Click the 🎧 (Play) button on the floating toolbar.
• You will immediately hear the text read aloud using your newly selected dialect and accent.

You can switch dialects whenever you need, whether switching languages for foreign study or adjusting regional cadence for leisure reading.