KindleFlow

Name: KindleFlow
Author: TJ

By: TJ Add-on

Send the rendered article page you can read in your browser to KindleFlow.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-07-26

Version:

0.1.0

Last updated: 2026-05-13

Features & Capabilities

KindleFlow turns readable web articles into Kindle-friendly EPUB files. The browser extension is the recommended way to save paid Substack posts because it works from the page you can already read in your browser.

Open a readable article, click the KindleFlow extension, and send the current page to your configured KindleFlow server. KindleFlow imports the rendered article, generates an EPUB, and can automatically send it to your Kindle email address when your KindleFlow profile is configured for auto-send.

The extension does not read, store, or transmit Substack cookies.

User Growth & Download Statistics

Add-on

By:

Daily users:

Version:

0.1.0 Last updated: 2026-05-13

Version code:

6254582

Creation date:

2026-05-10

Risk:

Permissions:

Host permissions:

https://substack.com/*
https://*.substack.com/*
https://kindleflow.tail217062.ts.net/*

Size:

20.53KB

URLs:

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-26

Compare stats and ranking:

Ranking

# 136,310 ▼ 37,552

Other rankings

#36 in kindle keyword 35 ▼ 11

For Developers

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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:

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/kindleflow/

Is KindleFlow 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.

KindleFlow requires very minimum permissions.

Risk impact analysis details

Low Request access to the following domains: substack.com, ts.net

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.

KindleFlow 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 has low user count. Unpopular extensions may not be stable or safe.
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