UtilityBaseProductivity Tools
Slowed + Reverb Maker
Turn any song slowed + reverb or nightcore in your browser, then download a WAV.
Updated July 13, 2026
How to use the slowed + reverb maker
- 1Choose an audio file — MP3, WAV, OGG, or M4A.
- 2Pick the Slowed + Reverb or Nightcore preset, or go Custom.
- 3Adjust speed, reverb amount, and room size to taste.
- 4Preview, then download the processed WAV.
Common uses
- Making a slowed + reverb edit of a song for a video
- Creating a nightcore (sped-up) version of a track
- Slowing a song down to learn or transcribe a part
- Adding reverb ambience to a dry recording
Frequently asked questions
What is a slowed + reverb edit?
It's a remix style that slows a song down and adds reverb, giving it a hazy, spacious, nostalgic feel. Slowing playback also drops the pitch (voices and instruments sound deeper), and the reverb makes it sound like it's playing in a large room. It blew up through TikTok and YouTube edits.
Does slowing the song change the pitch?
Yes — and that's intentional. This tool changes speed and pitch together, the way a record played at a slower RPM sounds lower. There's no pitch correction, because the lowered pitch is exactly what gives slowed + reverb its sound. Nightcore is the same idea in reverse: speeding up raises the pitch.
Are my audio files uploaded anywhere?
No. The file is decoded and processed entirely in your browser using the Web Audio API, and the WAV is generated locally. Nothing is sent to a server. The output is uncompressed 16-bit WAV, which is universally compatible but larger than an MP3 (roughly 10 MB per minute in stereo).
About this tool
The slowed + reverb maker recreates the dreamy, dragged-out edit that's everywhere on TikTok and YouTube: it lowers the playback speed of your track, which also lowers the pitch (there's no pitch correction — that muffled, underwater tone is the whole aesthetic), and layers a synthetic reverb tail on top so the sound rings out. Flip the speed above 100% instead and you get nightcore — faster and higher-pitched. Drop in an MP3, WAV, OGG, or M4A, tweak speed, reverb amount, and room size, preview instantly, and download an uncompressed 16-bit WAV. Everything — decoding, the offline render, and the export — happens locally in your browser, so your audio is never uploaded.
Like most tools on UtilityBase, the slowed + reverb maker runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more productivity tools here.
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