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Chrome Extension vs YouTube Playback Speed vs Web Editor Compared

2026-10-11

Three ways to slow music down compared side by side: YouTube's built-in speed control, the Slow & Reverb Chrome extension, and the web editor. Speed range, pitch, reverb, saving a file, platforms and cost.

There are three ways to hear a song slower that do not involve someone else's re-upload. YouTube's player has a speed setting built in. The Slow & Reverb for YouTube extension applies a slowed and reverb effect live to anything playing on YouTube or YouTube Music. And the web editor at slowandreverb.com processes audio files you own and gives you an MP3. They overlap just enough that people pick the wrong one, and differ enough that the wrong one is frustrating.

This guide compares all three on the things that actually decide the choice: how far they can slow, what happens to pitch, whether there is reverb, whether you end up with a file, where each runs and what each costs. Then it says which to use for each common need. The existing extension versus web editor page covers two of the three in more depth; this post adds YouTube's own control to the picture, because it is the one most people try first. If you want to know why pitch behaves the way it does, the preserve pitch page explains the mechanics.

The three tools in one sentence each

YouTube's playback speed is a menu in the player that changes tempo while holding the key fixed. It is designed for lectures and talks.

Slow & Reverb for YouTube is a free Chrome extension, version 0.2.1 at the time of writing, that routes the audio of a YouTube or YouTube Music tab through a speed, reverb, bass, tone and width chain while you listen. It saves nothing.

The web editor is a free browser tool that applies the same kind of chain to audio files you load, with live preview, and exports MP3 at 96 kbps, 32 kHz. Nothing is uploaded and nothing needs installing.

Side by side

Three rows in that table decide almost every choice: pitch behaviour, reverb, and saving a file. The rest of this guide is mostly about those three.

Pitch: the difference you hear first

Slow a recording the old way, on tape or vinyl, and the pitch drops with the tempo. That drop is the sound of the slowed and reverb style. At about 0.84x the key falls roughly three semitones; a voice sits lower in the chest and the whole mix gets heavier.

YouTube's speed menu does not do this. It time-stretches the audio so that a lecture at 0.75x is still the lecturer's voice at the lecturer's pitch, just slower. That is exactly right for speech and exactly wrong for this style. A song at 0.75x in YouTube's menu sounds like the same singer performing slowly, often with a faint warble from the stretching, and never sounds slowed in the way people mean.

The extension lets pitch follow speed by default. The web editor does the same, and adds a Preserve pitch toggle for people who want slower playback in the original key, for example to practise an instrument part. One honest caveat on that toggle: it changes the live preview only. Exported files keep the speed-linked pitch, so a 0.85x export is about three semitones lower even with Preserve pitch on. If you need an in-key file, the route is Audacity's Change Tempo or a DAW time-stretch, as the pitch-preserving guide explains.

Reverb: two of the three have it

YouTube's menu has no reverb. It is a speed control and nothing else. If you want the room sound that gives the style its name, it is the extension or the editor.

Both split reverb into a wet mix (Reverb) and a decay time (Space). Both have bass and tone shelves to shape the result and a width control for the stereo image. Both ship with presets and let you save your own. In practice a sound you like in one carries to the other, with one adjustment: streaming audio from YouTube is already compressed, so in the extension you will usually want reverb and bass a touch lower than you would use on a clean file in the editor. The listening guide covers how to tune reverb by ear in the extension.

Saving a file: only one of the three

This is the line that matters most, and it is the one people most often get wrong.

YouTube's speed menu changes playback. The extension changes playback. Neither produces anything you can keep. The extension in particular does not download, record or export, has no permission that would allow it to, and is not going to gain one. It processes audio on the way to your speakers and discards it. When the tab closes, nothing remains but your settings.

The web editor is the only one of the three that gives you a file. You load audio you own, hear the processed version live, and download an MP3. The output is 96 kbps at 32 kHz, encoded in a web worker in your browser. That bitrate is tuned for fast in-browser encoding and is fine for YouTube, TikTok and Shorts, because those platforms re-encode whatever you upload. It is not a distribution master; for that, start from a WAV and finish in a DAW. There is no WAV or FLAC export.

The editor also cannot open a YouTube link. It works with files you choose from your device. If what you want is a saved copy of a slowed YouTube video, none of the three tools does that, and that is deliberate on our side.

Platforms and cost

YouTube's speed menu works anywhere YouTube does, including the mobile apps. That is its one clear advantage over the extension.

The extension runs on desktop Chrome and other desktop Chromium browsers: Edge, Brave, Opera, Vivaldi. It does not run on phones, in Firefox (a separate add-on called Slowverb exists for that) or in Safari.

The web editor runs in any modern browser on desktop and mobile, slower on phones, with the same features. It needs no install. The phone guide covers the mobile workflow.

All three are free. The extension has no paid tier and no account. The editor has no account, no watermark and no limits on file count or length.

When to use each

Using them together

The three are not rivals so much as stages.

YouTube's menu is the quick check. If you are watching a tutorial and need it slower, there is no reason to involve anything else.

The extension is the listening tool. It costs nothing to leave running, follows playlists on its own, and is the fastest way to find out whether a song suits the style. Many people use it as an audition stage: play a track on YouTube Music through the extension, find the speed and reverb that fit, and save that as a preset.

The editor is the production tool. If you own the audio and want a file, open the editor, recreate the preset, and export. Because the two share control names and a similar chain, the numbers translate with little adjustment. The complete guide to making a slowed and reverb song walks through the editor side with reasons for each setting.

What none of them will do: independent pitch shifting (pitch is tied to speed, and preserving it is preview-only in the editor), chopping or stuttering, EQ beyond bass and tone shelves, video export, or trimming. If you need those, you need a DAW.

Open the free editor: upload MP3, WAV, AAC, OGG or FLAC, adjust speed, reverb, bass, tone, width and space, then export MP3 or a ZIP of many tracks. Everything runs in your browser.