JustAnime Sync

Name: JustAnime Sync
Author: umutxyp

By: umutxyp Add-on

Marks episodes and chapters on JustAnime as you watch or read them, wherever you are.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-09-08

Version:

1.15.0

Last updated: 2026-08-31

Features & Capabilities

JustAnime Sync keeps your anime and manga list up to date without you touching it.

Watch or read like you normally do. When you're far enough into an episode or chapter, the extension marks it on your JustAnime account — and on any AniList or MyAnimeList account you've linked there.

Works on 200+ streaming and reading sites, from Netflix and Crunchyroll to MANGA Plus and VIZ
Every site has its own switch, and one switch pauses all of them
New sites arrive from the server, so you never wait for an update
Wrong title? Fix it from the page, and that page is never guessed again
Stopped halfway? It remembers where, so you can pick it back up
Add your own Plex, Jellyfin, Emby, Komga or Kavita — that address stays in your browser and is never sent to us

Privacy. On a supported site the extension reads the page title, the address, how far along you are, and — where a site needs it — the text of the specific elements its rule points at. No other page content, no cookies, no browsing history. The only server it talks to is justanime.me.

You need a free JustAnime account: https://justanime.me

User Growth & Download Statistics

Add-on

By:

umutxyp

Daily users:

Version:

1.15.0 Last updated: 2026-08-31

Version code:

6451746

Creation date:

2026-08-26

Firefox add-on GUID:

sync@justanime.me

Firefox add-on numeric ID:

3060642

Weekly download count:

Firefox on Android:

Risk:

Permissions:

Host permissions:

*://*/*

Size:

224.73KB

Email:

su*****@justanime.me

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-09-08

Compare stats and ranking:

Ranking

# 112,078 ▲

Other rankings

#190 in episode keyword 4 ▲ #196 in sync keyword 37 ▲

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:

umutxyp

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/justanime-sync/

Email:

su*****@justanime.me

Website:

https://justanime.me/developers

Is JustAnime Sync 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.

JustAnime Sync 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.

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.

JustAnime Sync 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.
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