If you primarily use Firefox and need the performance of the MEGA extension, consider these official alternatives:
Standard browsers have memory limits that can cause "Out of memory" errors when downloading files larger than 1GB. The extension bypasses these limits, allowing for much larger and more reliable file transfers.
By running source code locally rather than from a remote server, the extension offers a more secure environment for MEGA's zero-knowledge encryption to operate. Current Availability Status mega nz extension firefox
If the extension is essential to your workflow, MEGA continues to offer fully supported, up-to-date extensions for Google Chrome and Microsoft Edge . meganz/web-extension: mega.nz browser extensions - GitHub
As of , the official status of the Firefox extension is as follows: If you primarily use Firefox and need the
When active, the extension provides several critical improvements over standard browser behavior:
The MEGA Pass password manager extension remains available and supported on Firefox for users looking to manage secure credentials. Recommended Alternatives for Firefox Users Current Availability Status If the extension is essential
This is the most recommended solution. Once installed, you can enable browser integration in the app settings ( Settings > Transfers > Transfer tools ), which allows the desktop app to handle large downloads initiated from Firefox, bypassing browser memory limits entirely.
MEGA has officially ceased support for the Firefox extension due to the 4-week review delay imposed by Mozilla.