Substack Exporter

Name: Substack Exporter
Author: rxliuli

By: rxliuli Add-on

Export Substack posts, comments, notes and subscriptions as Markdown, CSV, HTML or EPUB

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-07-26

Version:

0.0.1

Last updated: 2026-07-21

Features & Capabilities

Substack Exporter saves Substack newsletters to your computer for offline reading and backup.

What it exports

All posts of a publication, or a single post, as Markdown, HTML or EPUB
Comment threads of a post as CSV, with reply structure preserved
Notes and Reads of any user profile
Your own subscription list

About paid content: posts behind a paywall export in full only for publications your account already subscribes to. The extension uses your existing browser login and cannot bypass paywalls.

Details

Works on substack.com subdomains and custom domains
Can download all images in posts, so archives stay readable fully offline. Links in the exported files point to the local copies
EPUB export packs a whole publication into one file for Kindle or Kobo
Exports run in the background and resume where they stopped after rate limits, network errors or browser restarts
Everything is processed locally in your browser. No data is sent to any server

How to use

Click the extension icon to open the dashboard. If you are on a Substack page, its URL is filled in for you
Or click New Export and paste the URL of any publication, post or profile
Pick what to export, watch the progress, and download when done

The free version handles up to 100 records per task with Markdown, HTML and CSV export. Pro removes the limit and adds EPUB, offline image download and multiple concurrent tasks.

Questions or feature requests: https://discord.gg/gFhKUthc88

User Growth & Download Statistics

Add-on

By:

rxliuli

Daily users:

Version:

0.0.1 Last updated: 2026-07-21

Version code:

6361770

Creation date:

2026-07-18

Risk:

Permissions:

Host permissions:

<all_urls>

Size:

287.45KB

Email:

rx*****@gmail.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-26

Compare stats and ranking:

Ranking

# 147,935 ▲

Other rankings

#234 in kindle keyword 35 ▲

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

rxliuli

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/substack-exporter/

Email:

rx*****@gmail.com

Website:

https://store.rxliuli.com/support/

Is Substack Exporter Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Substack Exporter requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Substack Exporter is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
High **** ********* *** ******** ****** *** ********** *** *** ** ****** ** *****
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****