By: Ahmad Rosario Add-on
Download Custom SubUploader (current and past versions) for Firefox
Latest Version:
3.0.3 Updated:
a year ago
Ready to install?
Custom SubUploader is available to install from Firefox Add-ons Store and for download from this page.
1
Daily users
No ratings yet
0
Total downloads
Available versions
You can find the current and older versions of Custom SubUploader here. You can download the archived versions or inspect their source codes.
As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
| Version | Download | Size | Download count | Timestamp |
|---|---|---|---|---|
| 3.0.3 | XPI · ZIP · Source code | 310.72KB | 0 | 2025-04-05 |
3.0.3 310.72KB
Install XPI file
An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
- Simply drag-and-drop the XPI into Firefox to install the add-on.
Install ZIP file
- Download the Custom SubUploader ZIP file.
- In Firefox browser, go to
about:addonsto open Add-ons Manager - Click on ⚙, Install Add-on From File

- Select the Custom SubUploader ZIP file from step 1. Custom SubUploader is now installed on your browser.
Best Custom SubUploader Alternatives
Here are some Firefox add-ons that are similar to Custom SubUploader:
Subtitle Uploader
baun-baggi
SubSync Master
Ywirju
+Sub
stefan.breitenstein
EasySubs
Nitrino
Subtitles Translator
Bắn cá 23win
YTSubtitleLoader
RomanHue
Subtitle Exporter
Anisha Bird
VoxSub
voxsub
YouSub
Masaru
AutoSubtitleFinder
Asad
Substital
Gaëtan Covelli
Auto Subtitles Extractor Plus
Peter Russell