Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of HelaKatha - Sinhala Input Tool

HelaKatha - Sinhala Input Tool by mudhitha

Smart Singlish to Sinhala phonetic typing tool with real-time transliteration, predictions, and FM Abhaya legacy conversion on any website.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
No account, login credentials, or third-party service is required to test this add-on.

How to test the extension:
1. Open any website containing an input or search field (e.g., https://www.google.com or https://www.wikipedia.org).
2. Click inside any text box or search bar.
3. Type phonetic Singlish words to observe real-time suggestions and replacement:
- Type "amma" and press Space -> Converts to "අම්මා "
- Type "kohomada" and press Space -> Converts to "කොහොමද "
- Type "lanka" and press Space -> Converts to "ලංකා "
- Type "oyata" and press "." (period) -> Converts to "ඔයාට."
4. Press "Alt + Space" at any time to toggle Singlish typing ON/OFF (an on-screen toast and the toolbar icon badge update between "සි" and "EN").
5. Click the extension toolbar icon (purple "සි") to:
- Switch Output Format between "Sinhala Unicode" and "FM Abhaya (Legacy)" mode.
- Switch Theme between "Dark Theme" and "Light Theme".

Privacy & Permissions:
- This extension operates 100% client-side in pure JavaScript.
- It does not collect, log, track, or transmit any user data or keystrokes (declared as data_collection_permissions: ["none"]).
- No external network requests or remote scripts are executed.
Developer comments
HelaKatha was created to provide the Sri Lankan and global Sinhala-speaking community with a fast, private, and intuitive phonetic typing experience directly
inside the browser.

Features & Philosophy:
• 100% Privacy First: Transliteration runs entirely offline in your browser with zero data collection.
• Universal Compatibility: Works across all modern web apps including Google Docs, Gmail, WhatsApp Web, ChatGPT, and social media.
• Legacy & Modern Support: Seamlessly switch between Standard Sinhala Unicode and FM Abhaya visual ASCII encoding.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support Email
  • Copy add-on ID
Version
1.0.1
Size
31.87 KB
Last updated
5 days ago (Aug 26, 2026)
Related Categories
  • Language Support
  • Social & Communication
  • Alerts & Updates
License
Mozilla Public License 2.0
Version History
  • See all versions
Tags
  • facebook
  • google
  • social media
  • translate
  • twitch
  • twitter
  • whatsapp
  • youtube
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.