Upload an MP3, WAV, AAC, OGG, or FLAC file to get started.
Use the controls to slow the audio track down, add reverb, and shape the sound the way you want.
Listen in your browser, make adjustments, and download your creation once it sounds about right.
Slowed and reverb is an audio effect when a song is played a little slower and layered with reverb so it feels more spacious, hazy and emotional. It has become a popular internet remix style that many people have come across on YouTube and TikTok. If you’re interested in the origin of the sound, Pitchfork has a good piece on how slowed + reverb remixes took off. Using this tool, you can quickly make a slowed and reverb edit of your own by uploading a track, slowing it down, and adding reverb until it lands where you want.
Upload your audio file, change speed and reverb settings, preview your resulting audio file, and download it if it sounds good. You can use it as a slowed and reverb maker, slowed reverb converter, and simply as a browser audio editor.
Yep, totally free—no hidden fees, no catch. We do offer a premium version with extra features and perks, which you can try for free by signing up. However, the free version will always be available, so you can keep creating without any cost.
Slowed and Reverb Premium is the professional version of our Slowed and Reverb tool. It unlocks advanced features like 3D Spatial Audio Mode, Advanced Reverb Controls, Multi-Band EQ, Custom Presets, and more. You can try Premium completely free — no payment required.
Refunds for paid products are offered only in special circumstances and evaluated on a case-by-case basis. Because previews are available before purchase, we do not issue refunds for dissatisfaction with results.
Monthly and yearly subscriptions renew automatically until canceled. You may cancel at any time through your account dashboard.
Cancellations take effect at the end of your current billing cycle—your account will remain active until the period you’ve already paid for ends. After that, you will no longer be charged and your access will expire.
Yes, it can! Nightcore is a genre of music where the pitch and tempo of a song are increased, giving it a faster, more energetic feel. To create a Nightcore effect using this tool, simply increase the speed and reduce the reverb. We recommend setting the speed to approximately 1.3x and the reverb to 0%. Play around with the settings until you find the perfect balance that matches your style.
Definitely. Daycore is basically the opposite of nightcore: instead of speeding a song up, you slow it down and usually lower the pitch to make it feel heavier, darker, or more emotional. For a daycore-style result, we suggest the speed be set to around 0.7x to 0.8x and low to moderate reverb, and if you’ve got pitch controls, lower the pitch a bit too. Experiment with it a little bit from there because the best settings really depend on the track.
Indeed, you can. While lo-fi music is generally warmer, softer and a notch less polished, applying slowed + reverb treatment can get you close enough. We recommend slowing the track down to about 0.85x to 0.95x to create a more lo-fi sounding edit. Keep the reverb moderate (avoid huge reverb) and stop before the vocals get too washed out. A little goes a long way.
We support WAV, MP3, AAC, OGG, and FLAC formats. If you’ve got something else, you might need to convert it first. The file size limit is 500 MB per upload and unlimited on our paid-tier plan.
Absolutely. Your audio files are processed directly in your browser. Nothing is sent, stored, or processed on our servers. Your music stays with you.
