A downloadable tool

Buy Now$5.00 USD or more

Any audio file. Instant retro.

RetroSample takes any audio file — a voice memo, a field recording, a modern music loop, a podcast clip — and crushes it into crunchy retro console sound, entirely inside your browser. Drop a file, pick a console preset, hear the before/after instantly, export a WAV. No install. No account. No upload. No internet after download.

This is the full version — all 16 console presets, wave shaping, silence trim, edge fade and batch ZIP export, unlocked forever. (Looking for the free edition? Try RetroSample Free — 6 presets, bit crusher & sample-rate reduction.)

What you get

  • All 16 console presets — NES, Game Boy, Commodore 64, Atari 2600, Telephone, Calculator, Master System, Game Gear, ZX Spectrum, Amiga, PC Engine, Old Radio, Cassette Tape, Robot Voice, Toy Piano, Dial-up Modem
  • Wave shaping — square, pulse 25/50/75%, saw, triangle on top of the bit crusher
  • Silence trim & edge fade — clean up starts/ends and avoid clicks
  • Batch ZIP export — process and download in one click
  • Bit-depth reduction — 16 bits down to 2 (that crunchy quantization grit)
  • Sample-rate reduction — 44.1 kHz down to 2 kHz (stair-steps and aliasing)
  • Before / After A-B preview — play the original and the crushed version side by side
  • Mono downmix + normalize — console-style mono and peak control
  • WAV export — 16-bit, ready for Godot, Unity, GameMaker, Construct or anything that reads WAV
  • English & Japanese UI

Free vs Full

Free: bit-depth and sample-rate reduction, mono downmix, normalize, 6 console presets, one-at-a-time WAV export.
Full (this page): everything above, one-time $5, no subscriptions.

100% offline by design

RetroSample contains zero network code. Your file is decoded and processed with the Web Audio API inside your tab — nothing is uploaded, nothing is recorded, no telemetry. It keeps working forever, even offline, from a single HTML file. Double-click, done.

Requirements

Any modern browser (Chrome, Edge, Firefox, Safari). Works on Windows, macOS, Linux.

You own your sounds

Exported audio is 100% yours — use it in commercial projects, free of royalties. The software itself is licensed (no redistribution of the tool). See LICENSE.txt inside the ZIP.

More from capsuloom

Kitshot — turn one screenshot into a complete Steam & itch.io store art pack (capsules, headers, heroes), 100% offline. Free edition + Full ($5, all 5 templates).

SFX Forge — offline retro sound effect generator: jumps, coins, lasers, explosions with instant WAV export, 100% local, no uploads. Free edition (3 waveforms, 8 presets) + Full ($5, 48 presets, batch export).

PixCrunch — offline image compressor & resizer: batch shrink screenshots and store images to PNG, JPEG or WebP before you upload them. Free edition (10 files per batch) + Full ($5, unlimited batches + target size).

PackPix — offline sprite sheet packer: drop a batch of PNG frames and get a packed sheet with a live atlas preview, 100% local, no uploads. Free edition (3 layouts, PNG export) + Full ($5, MaxRects, JSON atlas, batch ZIP).

Updates included. Refunds follow itch.io policy.

Purchase

Buy Now$5.00 USD or more

In order to download this tool you must purchase it at or above the minimum price of $5 USD. You will get access to the following files:

retro-sample-full.zip 19 kB

Development log

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