MontroneDSP

Free toolsALS Converter

Ableton Live Set Downgrader

Free ALS Converter for Ableton Live: create a new Live 11.x-targeted copy of a Live 12 .als Set. Choose the exact Live 11 point release you run — 11.3 metadata will not open in 11.2. Runs locally in your browser.

Downgrade Set

Drop an .als file here. The tool analyzes version metadata, applies evidence-based Live 12 → 11 transforms when needed, and downloads a new file such as Session_Live11_downgraded.als.

Drop .als here

or browse from disk

No file selected.

  • Pick the Live 11 point release you actually run (11.3 Sets will not open in 11.2).
  • Default output is a new download — source project stays read-only.
  • Static XML validation ≠ confirmed open in Ableton Live.

Report

Waiting for a Set…

Privacy

We do not collect any data. Conversion runs entirely in your browser on this device. Your .als files are not uploaded to MontroneDSP servers, and we do not use analytics, accounts, or cloud processing for this tool.

Original Sets are never overwritten. The tool only creates a new downgraded copy for download.

This tool is open source (MIT). Source code:

https://github.com/montronedsp/alsconverter

No guarantee. Provided as-is, without warranty of any kind. Converted Sets may fail to open, lose features, or behave unexpectedly. Always keep backups. Not affiliated with Ableton AG.

FAQ

What does ALS Converter do?

It creates a new Ableton Live 11.x-targeted copy of a Live 12 Set (.als). The tool analyzes version metadata and applies evidence-based Live 12 → 11 transforms when needed, then downloads a file such as Session_Live11_downgraded.als.

Does my .als file get uploaded?

No. Everything runs on this device in your browser. There is no upload to MontroneDSP servers, no accounts, and no cloud processing for this tool.

Which Live 11 versions can I target?

Live 11.2.11 (recommended for 11.2.x), Live 11.2.7, Live 11.3.21, Live 11.1, and Live 11.0.12. Choose the point release you actually run — Live 11.3 Sets will not open in Live 11.2.

Is it free and open source?

Yes — MIT License. Source: github.com/montronedsp/alsconverter. A portable Windows x64 app is available below.

Will every converted Set open in Ableton Live?

No guarantee. Converted Sets may fail to open or lose features. Keep backups. Static XML validation is not a confirmed open in Ableton Live. Not affiliated with Ableton AG.

Also see free tools for more MontroneDSP utilities, and the ALS Converter repository for releases and issues.

Windows app

Portable Windows x64 build of the same open-source converter. Runs fully offline. Accept the MIT License to unlock the download.

  • No installer — unzip and run ALSConverter.exe
  • No data collection / no cloud upload
  • NO WARRANTY — experimental tool, use at your own risk