HarmonySync Firefox

HarmonySync

By: Arvi Add-on
Seamlessly move your playlists between major music streaming platforms like Spotify, Apple Music, and YouTube Music with a single click. Keep your library organized across platforms automatically.

Features & Capabilities

Harmony Sync Harmony Sync is a lightweight, fully automated Chrome extension that lets you instantly transfer your favorite playlists between major streaming platforms like Spotify, YouTube Music, Apple Music, Tidal, and Deezer.

Stop wasting time manually searching for songs or paying for expensive third-party syncing services. Harmony Sync runs directly in your browser, leveraging a smart matching engine to find and save your tracks across platforms in real-time.

Key Features Universal Support: Extract your playlists from Spotify, Apple Music, YouTube Music, Tidal, and Deezer, and seamlessly transfer them to your Spotify, Apple Music, or YouTube Music accounts.

Smart Matching Engine: Automatically sanitizes track titles and cross-references artists to ensure the highest possible match accuracy.

Real-Time Tracking: Watch your transfer progress live with a built-in stopwatch, exact song counts, and an accurate ETA.

Auto-Playlist Creation: Automatically generates a newly sequenced playlist in your destination account to keep your library organized.

Frictionless Setup: No third-party accounts, subscriptions, or external dashboard logins required.

How it Works Open a tab with the source playlist you want to transfer.

Open a second tab for your destination music platform.

Click the Harmony Sync extension icon.

Verify the auto-detected route (e.g., Tidal ➔ YouTube Music) and click Run Transfer.

Privacy & Security First Harmony Sync operates entirely locally within your browser. Your authentication tokens and playlist data are never routed through, stored on, or analyzed by external developer servers. The extension communicates directly and exclusively with the official APIs of your selected music platforms.

User Growth & Download Statistics

Manifest V3 Add-on
By:
Arvi
Daily users:
1
Version:
1.0.0 Last updated: 2026-08-27
Version code:
6434418
Creation date:
2026-08-24
Firefox add-on GUID:
harmonysync@yourdomain.com
Firefox add-on numeric ID:
3059539
Weekly download count:
1
Firefox on Android:
No
Risk:
Very high risk impact High risk likelihood
Permissions:
Host permissions:
  • *://*.apple.com/*
  • *://*.youtube.com/*
  • *://*.spotify.com/*
  • *://*.deezer.com/*
  • *://api.deezer.com/*
  • *://*.tidal.com/*
  • *://tidal.com/*
Size:
777.76KB
Email:
ar*****@gmail.com
URLs:
Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-09-09
Compare stats and ranking:

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:
Arvi
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/harmonysync/
Email:
ar*****@gmail.com

Is HarmonySync 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.

HarmonySync requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
  • Critical ******* ****** ** *** ********* ******** ********** ************ ************ *********** *********
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.

HarmonySync 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 **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
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