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Preview of OwSynth

OwSynth by BrokenByteOfCode

Enjoy MIDI files directly on any webpage without downloading them. OwSynth brings back the classic web vibe with a built-in player that supports most MIDI formats!

ExperimentalExperimental
Available on Firefox for Android™Available on Firefox for Android™
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Extension Metadata

Screenshots
Support of bgsounds!MIDI Files in <a> also playable
About this extension
Let's imagine. You find old webpage with MIDI files. You don't wanna download each file for just listen them. Right? So. Here our main hero. It support all sorta (kinda) of MIDI files and can play them with SoundFont (No build-in SF2 included. Search by own. But add-on fallback to sine wave synthesis if no SoundFont is provided)

Works on Firefox for Android too! (Tested on Samsung A0x devices)
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Permissions and data

Required permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
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Add-on Links
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Version
1.0.0
Size
43.25 KB
Last updated
7 days ago (Feb 13, 2026)
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Tags
  • music
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