Previews (For Twitch & YouTube & Kick) Firefox

Previews (For Twitch & YouTube & Kick)

By: MarkM
Live hover previews for Twitch & YouTube & Kick | A bunch of quality of life improvements for Twitch & YouTube & Kick

Features & Capabilities

Previews (For Twitch & YouTube & Kick) delivers live image or video previews when you hover over streams, plus a wide range of quality‑of‑life enhancements for Twitch, YouTube, and Kick. It brings previews to the sidebar and directories with features like multi‑stream, dynamic chat overlays, and per‑platform options.

Key capabilities include auto quality, Picture-in-Picture, screenshot and clip download, quick preview resizing, volume control, and keyboard shortcuts. The extension also offers a Scroll-friendly sidebar, RTL layout, and cross‑platform support to streamline your viewing and streaming workflow.

User Growth & Download Statistics

Manifest V2 Add-on Developer Tools Content
By:
MarkM
Daily users:
2,696 -21
Rating:
4.75
(132)
Version:
16.6 Last updated: 2026-05-28
Version code:
6280799
Creation date:
2020-08-22
Risk:
High risk impact Moderate risk likelihood
Permissions:
Content scripts matches:
  • www.twitch.tv
  • www.youtube.com
  • player.twitch.tv
  • clips.twitch.tv
  • previews-app.com
Size:
844.82KB
Email:
Ma*****@previews-app.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-20
Compare stats and ranking:

Other platforms

Chrome
Previews (For Twitch & YouTube & Kick) (v17.0)
60,000 4.76 (1,418)
Edge

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:
MarkM
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/previews-for-ttv/
Email:
Ma*****@previews-app.com
Website:
https://github.com/Previews-app/Previews/issues

Publisher Change History

2026-02-19: tw*****@gmail.com to Ma*****@previews-app.com

Upgrade to see full email

Permission Change History

2025-11-05: Version 14.1 → 15.1
Add Optional permissions: *://*.kick.com/*
2025-04-03: Version 12.4 → 12.7
Add Optional permissions: *://kick.com/* cookies
Remove Optional permissions: *://*.facebook.com/*
2023-02-17: Version 6.2.4 → 7.4
Add Permissions: scripting *://*.twitch.tv/* *://*.youtube.com/* *://previews-app.com/*
Add Optional permissions: *://*.facebook.com/*
Remove Optional permissions: https://previews-app.com/* https://clips.twitch.tv/* https://www.youtube.com/* https://*.facebook.com/*
2022-11-23: Version 5.8 → 6.0
Add Optional permissions: https://previews-app.com/*

User Reviews

Users appreciate the add-on's extensive and improving features that enhance Twitch and YouTube experiences beyond the original platforms. However, multiple reviews express frustration that some previously free features and favorite channel previews are now locked behind a subscription paywall, which was not clearly disclosed upfront. This unexpected paywall and usage limits have led to negative feelings, with some calling the monetization practice shady. Despite this, the features themselves remain valued and recommended by users.
Pros
  • Offers many useful and awesome features enhancing Twitch and YouTube viewing experience
  • Provides features that the original platforms do not have or are lacking
  • Features are continually improved and updated
Cons
  • Some favorite channels' content has been put behind a paywall after being free
  • Existing free features have been moved behind a subscription paywall, which frustrates users
  • The subscription requirement is not clearly disclosed on the add-on's page, leading to surprise and dissatisfaction
  • Pop-ups limit free usage by warning users they have hit their free clip viewing limit
Recent reviews
by CO*****, 2026-03-31

Nice extension, but if I set the previews to video on twitch I get a black preview, it works ok on kick.
by Ke*****, 2026-03-13

by Te*****, 2026-02-13
View all user reviews ›

Is Previews (For Twitch & YouTube & Kick) 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.

Previews (For Twitch & YouTube & Kick) requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Request access to the following domains: twitch.tv, youtube.com, previews-app.com
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
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.

Previews (For Twitch & YouTube & Kick) is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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