rFXGen
rFXGen generates sound effects through a simple interface, with a downloadable tool and project links provided by its creator.
About rFXGen
rFXGen by raylib technologies is a tool for generating sound effects. It is based on Dr.Petter's sfxr and is available as a WebAssembly tool in the browser and as a downloadable standalone tool for desktop. The source code is distributed under a zlib/libpng license, and the standalone desktop tool is distributed as freeware.
You can generate random sounds with buttons and adjust parameters with sliders. It includes presets such as Coin, Shoot, Explosion and PowerUp, and supports square, sawtooth, sine and noise wave types. Sounds can be kept in up to 10 slots for temporary storage, saved as .rfx parameter files, and exported as .wav, .qoa, .raw data or .h code files with configurable sample rate, bits per sample and channels.
It suits game developers and hobbyists who need short effects for projects and want a small, focused tool without a full audio editor.
Key features
- Predefined presets for Coin, Shoot, Explosion and PowerUp
- Square, sawtooth, sine and noise wave types
- Up to 10 slots for temporary sound storage
- Load and save .rfx sound parameter files
- Export to .wav, .qoa, .raw or .h files
- Standalone version supports command-line batch conversion
Best for: Game developers and hobbyists who need short sound effects for projects benefit most.
Good for
- Free to use in browser and as download
- Portable single-file standalone with no dependencies
- Exports audio files and code-ready byte arrays
- Supports custom GUI styles with .rgs files
Watch out for
- Web version lacks extra standalone features
- Sound slots store sounds only temporarily
rFXGen at a glance
- Website
- raylibtech.itch.io/rfxgen
- Category
- Music & Audio › Audio Editing & Production
- Type
- Website
- Pricing
- Free
- Platforms
- Linux, Web, Windows
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Audio Editing & Production
rFXGen alternatives
Tools and sites you could use instead, ranked by how closely they match.
ChipTone generates sound effects, mainly for games, and includes sampler and sequencer features under development.
jsfxr generates 8-bit sound effects online, with presets for game sounds and controls for waveforms, pitch, effects, and export.
Create custom sound effects for games with Bfxr, a simple sound design tool.
Orange Free Sounds provides downloadable sound effects, music, loops, beats, and ringtones, organized into browsable categories.
SoundboardGuys offers more than 10,000 playable and downloadable buttons for meme sounds, pranks, games, and other sound effects.
SoundGator provides downloadable sound effects with no registration requirement or attribution, according to its page.
Free
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rFXGen FAQ
What is rFXGen?
rFXGen is a sound effects generator based on Dr.Petter's sfxr. It runs in the browser and as a downloadable standalone tool.
Is rFXGen free?
Yes. The web tool is free to use and the standalone desktop tool is distributed as freeware. Donations are optional.
What file formats can rFXGen export?
It can export wave data as .wav, .qoa, .raw data or .h code files. It can also save sound parameters as .rfx files.
How do you create sounds in rFXGen?
Open the tool and use the buttons to generate random sounds. Use the sliders to customize sound parameters.
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