SFXR
jsfxr generates 8-bit sound effects online, with presets for game sounds and controls for waveforms, pitch, effects, and export.
About SFXR
jsfxr is an online 8-bit sound maker and sound effects generator that runs in a web browser. It is a JavaScript port of the original sfxr by DrPetter. Users can start from presets for common game sounds, such as pickup/coin, laser/shoot, explosion, powerup, jump, and blip/select, or from random, synth, and tone settings, then adjust them with manual controls. The manual controls cover envelope, frequency, vibrato, arpeggiation, duty cycle, retrigger, flanger, and low-pass and high-pass filters. Finished sounds can be downloaded as sfx.wav or sfx.json, with sample rate and sample size options.
The site can also be used as a JavaScript library for playing and rendering sfxr sound effects in games. A Pro version is described on the page with additional features, including mp3 and ogg export, a JSON sound editor, cloud save and sync, and sound packs. Pricing is not stated on the page.
Key features
- Preset generators for pickup, laser, explosion, jump, and similar game sounds
- Manual controls for envelope, frequency, vibrato, arpeggiation, and duty cycle
- Flanger and low-pass and high-pass filter effects
- WAV export with selectable sample rate and 8-bit or 16-bit sample size
- JavaScript library option for playing and rendering sounds in games
- Pro tier adds mp3 and ogg export and cloud save with sync across devices
Best for: Game developers and hobbyists who need simple retro-style sound effects for games.
Good for
- The free version lists unlimited 8-bit sound generation and WAV export
- The page lists unrestricted commercial use for both the free and Pro versions
- Sounds can be used directly in JavaScript games through the library option
Watch out for
- The free version does not include mp3 or ogg export, cloud save, or infinite undo and redo
- Cloud save and sync are listed only as Pro features, and cloud storage involves data leaving the device
SFXR at a glance
- Website
- sfxr.me
- Category
- Music & Audio › Audio Editing & Production
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
Guides for Audio Editing & Production
SFXR 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.
rFXGen generates sound effects through a simple interface, with a downloadable tool and project links provided by its creator.
Free
19 alternatives
WaveTracker is open-source Windows software for making music with wavetable synthesis, sampling, custom waves, effects, and MIDI controls.
Free
9 alternatives
Waveform Free is a free digital audio workstation for Mac, PC, and Linux, with recording workflows, mixing, and audio effects.
orDrumbox combines a browser drum machine, beat maker, step sequencer, soft synth, effects, and WAV export.
Vital provides wavetable synthesis with spectral oscillator warping to reshape waveforms and create different sounds.
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SFXR FAQ
Can sounds made with jsfxr be used commercially?
The page's comparison table lists unrestricted commercial use for both the free and Pro versions.
Can jsfxr be used inside a JavaScript game?
Yes. The site describes a JavaScript library for playing and rendering sfxr sound effects in games, and it refers to documentation for this use.
Does jsfxr collect personal data?
The page states that no personal data is collected and that there are no ads or trackers. The Pro cloud save and sync feature is optional, so data handling for that feature depends on whether it is used.
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