Convert M3U to JSON Online Free

Transform M3U playlist files into structured JSON data. Each track entry becomes a JSON object with metadata preserved. Perfect for music apps, streaming services, and playlist management.

By ChangeThisFile Team · Last updated: March 2026

Quick Answer

ChangeThisFile converts M3U to JSON in your browser using JavaScript libraries. No server upload required -- processing happens entirely on your device. Drop your file, get the converted result instantly. Free with no signup.

Free No signup required Files stay on your device Instant conversion Updated March 2026

Convert M3U to JSON

Drop your M3U file here to convert it instantly

Drag & drop your .m3u file here, or click to browse

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M3U vs JSON: Format Comparison

Key differences between the two formats

Feature	M3U	JSON
Structure	Plain text playlist format	Structured object notation
Metadata	Comments with #EXTINF tags	Nested objects with key-value pairs
File paths	Line-by-line file URLs	String values in track objects
Extended info	Duration and title in #EXTINF	Separate properties for each field
Parsing	Line-based text processing	Native JavaScript object parsing
File size	Very compact text format	Larger due to object notation
Browser support	Requires custom parser	Native JSON.parse() support
API compatibility	Media player specific	Universal web API format

When to Convert

Common scenarios where this conversion is useful

Music app development

Convert M3U playlists to JSON for use in web and mobile music applications. JSON format makes it easy to manipulate playlist data programmatically and display track information.

Streaming service migration

Export playlists from desktop media players as M3U and convert to JSON for importing into streaming platforms or custom playlist managers that accept JSON data.

Playlist analysis and processing

Transform M3U files into JSON for data analysis, duplicate detection, or batch processing of playlist metadata using JavaScript or Python scripts.

Web player integration

Convert M3U playlists to JSON format for loading into HTML5 audio players, React music components, or Vue.js media applications that expect structured data.

Who Uses This Conversion

Tailored guidance for different workflows

For Developers

Convert M3U playlists to JSON for web music players and streaming applications
Transform playlist data into JSON for API endpoints and database storage
Generate JSON fixtures from M3U files for testing media player components

Validate the JSON output structure matches your application's expected schema

Handle both basic M3U and extended M3U8 formats in your conversion workflow

For Music Enthusiasts

Export playlists from Winamp, VLC, or other media players as M3U and convert to JSON
Migrate playlists between different music management systems that require JSON format
Backup playlist metadata in a structured format for archival purposes

Ensure your M3U file uses UTF-8 encoding to preserve special characters in track names

Verify file paths in the JSON output point to accessible music files

For Web Developers

Load M3U playlists into JavaScript music players as JSON data
Convert streaming radio M3U files to JSON for web-based media applications
Transform playlist exports into JSON for integration with React or Vue music components

Test the JSON output in your JavaScript environment to ensure proper parsing

Handle streaming URLs and local file paths appropriately in your web application

How to Convert M3U to JSON

1

Select your M3U file

Drag and drop your M3U file onto the converter, or click browse to choose from your files.
2

Instant conversion

The browser converts your M3U to JSON locally. No upload needed and no data leaves your device.
3

Download the JSON

Save your converted JSON file. Ready to use immediately.

Frequently Asked Questions

Is M3U to JSON conversion free?

Yes, completely free with no limits. The conversion happens in your browser so there are no server costs or usage restrictions.

Are my playlist files uploaded to a server?

No, everything happens locally in your browser. Your M3U files are processed on your device and never leave your computer, ensuring complete privacy.

Does this work offline once loaded?

Yes, after the page loads, you can convert M3U files to JSON even without an internet connection. All processing is done client-side.

Is there a file size limit for M3U playlists?

The limit depends on your device's available memory. Most M3U files are small text files, so even playlists with thousands of tracks convert easily.

What M3U playlist formats are supported?

Both basic M3U (simple file paths) and extended M3U8 (with #EXTINF metadata) are supported. The converter preserves track duration, title, and other metadata in the JSON output.

Can I convert extended M3U files with metadata?

Yes, extended M3U files with #EXTINF tags are fully supported. Duration, track titles, and artist information are parsed and included as properties in the JSON objects.

Does this preserve track metadata and duration?

Yes, all metadata from #EXTINF tags (duration, title, artist) is preserved and converted into structured JSON properties for each track.

What JSON structure is created from M3U playlists?

The output is a JSON array where each track becomes an object with properties like 'duration', 'title', 'artist', and 'url'. Extended metadata is preserved as additional properties.

Can I convert playlists with relative file paths?

Yes, relative paths in M3U files are preserved exactly as written in the original playlist. The JSON output maintains the same file path structure.

Does this work with streaming URLs in playlists?

Yes, M3U files containing HTTP/HTTPS streaming URLs are converted correctly. Both local file paths and remote streaming links are supported.

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Need to convert programmatically?

Use the ChangeThisFile API to convert M3U to JSON in your app. No rate limits, up to 500MB files, simple REST endpoint.

View API Docs

Read our guides on file formats and conversion

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