Synclify

Name: Synclify
Rating: 5 (1 reviews)
Author: Andrea De Masi

By: Andrea De Masi

Create a watch party straight from your browser—works anywhere, ad-free.

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Install

Features & Capabilities

Synclify lets you watch videos in perfect sync with friends and family right from your browser. Start a watch party on any streaming site by installing the extension, creating a room, and sharing a code.

Synclify's key features include synchronized playback, optional shared volume, live chat, emoji reactions, a built-in overlay, nickname support, and fullscreen playback. It's free, ad-free, open-source, with no accounts required, and the source code is publicly available on GitHub.

User Growth & Download Statistics

Add-on Open Source Entertainment Developer Tools Communication

By:

Daily users:

Rating:

Version:

0.5.0 Last updated: 2026-04-09

Version code:

6214155

Creation date:

2022-12-01

Risk:

Permissions:

storage
activeTab
scripting
https://api.synclify.party/*
http://localhost:3001/*
https://eu.i.posthog.com/*

Size:

597.02KB

Email:

in*****@synclify.party

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-14

Compare stats and ranking:

Ranking

# 7,239 ▼ 50

Other rankings

#19 in sync keyword 43 #25 in lift keyword 2 #108 in party keyword 39 #161 in life keyword 9 ▲ 1#222 in room keyword 22

Other platforms

Synclify - Watch in sync with your friends (v0.5.0)

4,000 5.00

(9)

Synclify - Watch in sync with your friends (v0.5.0)

652 5.00

(1)

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:

Andrea De Masi

Firefox Add-ons Store

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

Email:

in*****@synclify.party

Website:

https://synclify.party

Permission Change History

2026-04-10: Version 0.4.1 → 0.5.0

Add Optional permissions: https://*/* http://*/*

2026-03-29: Version 0.4.0 → 0.4.1

Remove Optional permissions: https://*/*

2026-03-23: Version 0.3.1 → 0.4.0

Remove Host permissions: https://api.synclify.party/* http://localhost:3000/*

Remove Optional host permissions: https://*/*

Add Permissions: https://api.synclify.party/* http://localhost:3001/* https://eu.i.posthog.com/*

2023-03-19: Version 0.0.5 → 0.1.1

Add Host permissions: https://api.synclify.party/* http://localhost:3000/*

Add Optional host permissions: https://*/*

Add Permissions: scripting

Remove Permissions: https://api.openw2g.com/* http://localhost:3000/*

Add Optional permissions: activeTab https://*/*

User Reviews

Fulfills its purpose without messing up the watching experience — which is rare in this kind of solution. It was also really stable, in my experience. A great way to provide a functionality that should be native, at least for huge websites like YouTube.

by Lu*****, 2024-08-21

View all user reviews ›

Is Synclify 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.

Synclify requires very minimum permissions.

Risk impact analysis details

Medium Request access to the following domains: synclify.party, localhost, posthog.com

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.

Synclify is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******