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Document · ALS → JSON

Convert Ableton Live Set (.als) to JSON

Inventory any Ableton Live Set (.als) without owning Ableton Live: tempo, tracks, instruments, effects and the sample files the project needs. Ideal for archiving a collection, migrating DAWs, or recovering the story of a track from a backup drive — entirely in your browser, nothing uploaded.

DROP FILES HEREor click to browse
ALS
[ BATCH & MULTI-FILE STUDIO ]Want to batch convert multiple ALS files to JSON simultaneously or mix formats?
Open this config in Master Studio
LOCAL ONLY · 0 BYTES UPLOADED · WORKS OFFLINE
[ SPECIFICATION DOSSIER ]ALS → JSON

Technical Specifications & Architecture Matrix

VERIFIED SPECIFICATION // BITSTREAM FORENSICS

Detailed side-by-side format architecture for ALS Document (.als) and JavaScript Object Notation (.json). Every conversion executes strictly within isolated browser memory without network transit.

ParameterInput: ALSOutput: JSON
Full NameALS DocumentJavaScript Object Notation
Standard / SpecificationALS SpecificationECMA-404 / RFC 8259
MIME Media Typeapplication/alsapplication/json
Magic Header BytesRead off file header on device7B (ASCII '{') or 5B (ASCII '[')
Compression / CodecDeflate / UTF-8 Text RepresentationUncompressed UTF-8 plain text
Color / Audio DepthSemantic Typographic ContentArbitrary structured data objects
Alpha / TransparencyFormat-dependentN/A
Browser SupportDecoded via local WebAssembly in-browser compilerUniversal native JSON.parse() in all JavaScript engines
Ecosystem ApplicationDocument asset storage and forensic processingWeb APIs, configuration files, state serialization, data exchange
[ RUNTIME BENCHMARK ]

Local Execution & Resource Telemetry

ZERO CLOUD INGRESS // ISOLATED CLIENT RUNTIME
PROCESSING ENGINEWebAssembly (WASM) · In-Thread / Web Worker
NETWORK TELEMETRY0 BYTES TRANSFERRED
ESTIMATED PAYLOAD DELTAVaries by content and quality settings
DISPATCH LATENCY~40 ms to ~180 ms for standard assets on desktop/mobile CPU
Memory Guarantee: Direct ArrayBuffer allocation in WebAssembly linear memory; freed on tab close. Unlike cloud SaaS converters that log file payloads into storage buckets, no intermediate frames persist after execution.
[ EXECUTION PROTOCOL ]

How to Convert ALS to JSON Locally

  1. PHASE 01 // STAGE SOURCE

    Load .als Payload

    Drag and drop your .als file onto the working surface or use the system file dialog. File magic bytes are verified locally on device.

  2. PHASE 02 // CONFIGURE

    Set Codec & Quality Parameters

    Select a quality preset (Lossless, Visually Lossless, Balanced, Smallest) or adjust advanced encoding switches in the options panel.

  3. PHASE 03 // COMPILE & EXPORT

    Export .json to Disk

    Click CONVERT to execute local WebAssembly compilation. Save the finished .json directly to local storage, or stage it for chaining.

[ CLI SPECIFICATION ]

Command-Line Equivalent Recipe

DEVELOPER TERMINAL SYNTAX

Prefer local shell scripting? Run this standard POSIX command on your machine to achieve equivalent transcoding without a web interface:

# Convert ALS to JSON locally
pandoc input.als -o output.json
[ CONVERSION NETWORK ]

Related Converters & Routing

[ BROWSER INSTRUMENT ]

Convert directly inside Chrome without switching tabs

Extension specs

Working with files across multiple web pages? The official convrtr Chrome Extension adds native Side Panel docking, right-click context menu media extraction, and visible viewport capture. Powered by the same zero-upload client-side WebAssembly engine.

[ FORMAT SPECIFICATIONS ]

Format Comparisons & Guides

All comparisons
[ FREQUENTLY ASKED QUESTIONS ]

Technical Details & FAQ

[?]I inherited a drive full of .als files and don't own Ableton. What does this tell me?

Everything structural: the Live version that saved it, tempo, time signature, every track with its instruments and effects, and the exact sample file names the project references — so you know what each project is and which audio files to hunt down.

[?]Can it recover the actual audio / stems?

No tool can: .als files store no audio, only references to sample files on the producer's disk. The JSON lists every referenced sample so you can locate or relink them; rendering stems still needs the DAW with its plugins.

[?]Which Live versions are supported?

The extractor uses tolerant parsing that degrades gracefully across Live 8 through 12 project schemas. Unknown newer elements are skipped rather than failing the whole file.

[?]Are my unreleased tracks uploaded anywhere?

No. Decompression and parsing run entirely inside your browser. Unreleased music never leaves your device.

[?]Why convert from ALS to JSON?

ALS Document (ALS) and JavaScript Object Notation (JSON) serve distinct roles across the digital workflow. Converting to JSON provides optimized compatibility, modern compression efficiency, or standardized playback across web browsers, operating systems, and media production environments.

[?]Is the ALS to JSON conversion lossless or lossy?

The output format (JSON) is inherently lossless or supports lossless operation. Your original visual or audio fidelity is mathematically preserved without quantization artifacts.

[?]Does convrtr upload my files to any cloud server?

Never. convrtr is architected with a strict zero-upload model. All processing, decoding, decompression, and encoding happen 100% locally on your machine using sandboxed WebAssembly and Web Workers. Your data never touches an external server, database, or analytics collector.

[?]How can I convert ALS to JSON from the terminal / command line?

You can execute this conversion locally via command-line utilities such as ffmpeg, cwebp, or ImageMagick. For example: see the developer terminal recipe provided in the technical specifications dossier above. convrtr provides the identical local-first capability directly inside your browser without installing CLI packages.

[?]Can I batch convert multiple ALS files to JSON simultaneously?

Yes. You can drop multiple .als files into the instrument to process them concurrently in browser Web Workers, or click 'Open in Master Studio' to queue mixed formats, configure individual targets, and export as a single ZIP archive.

[ ARCHIVE & GUIDES ]

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