Download Onyx Notes - Markdown Editor

Name: Onyx Notes - Markdown Editor
Author: Spirit of Star

By: Spirit of Star Add-on

Download Onyx Notes - Markdown Editor (current and past versions) for Firefox

Latest Version: 2.6 Updated: a month ago

Ready to install?

Onyx Notes - Markdown Editor is available to install from Firefox Add-ons Store and for download from this page.

View source code

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Available versions

You can find the current and older versions of Onyx Notes - Markdown Editor 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	Timestamp
2.6	XPI · ZIP · Source code	2.80MB	2026-06-18
2.3	XPI · ZIP · Source code	2.78MB	2026-06-12
2.2	XPI · ZIP · Source code	2.82MB	2025-09-17
2.1	Paid users only	2.82MB	2025-09-16
2.0	Paid users only	1.64MB	2024-12-01
1.9	Paid users only	1.70MB	2024-08-11
1.8	Paid users only	755.25KB	2024-08-08

2026-06-18 · 0 downloads

XPI ZIP Source code

2026-06-12 · 0 downloads

XPI ZIP Source code

2025-09-17 · 0 downloads

XPI ZIP Source code

2025-09-16 · 0 downloads

Paid users only

2024-12-01 · 0 downloads

Paid users only

2024-08-11 · 0 downloads

Paid users only

2024-08-08 · 0 downloads

Paid users only

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 Onyx Notes - Markdown Editor ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the Onyx Notes - Markdown Editor ZIP file from step 1. Onyx Notes - Markdown Editor is now installed on your browser.