If it doesn’t start immediately
Free: Works on desktop Chrome, Edge, and most Chromium-based browsers.
Pro: Available only in Google Chrome on desktop.
getting started install setup
After installation:
install pin toolbar find extension
Yes. Transpose Classic is free.
Our Mission: Encouraging Music Making
We believe that making music is for everyone. That's why the core of Transpose is a powerful, free tool for your daily practice sessions. It is our contribution to the music community, to help as many people as possible grow and enjoy playing.
The Classic version contains all the features from the original extension, which we've been improving since 2017.
Transpose Pro is a new, optional upgrade.
It adds an improved pitch algorithm, plus extra features like formant control, vocal reducer, advanced loops, clips, and saved songs.
Upgrading is not required. Classic users keep the same free experience they always had.
pricing cost free pro classic upgrade
Transpose Pro is the paid upgrade for musicians who want more advanced tools.
Classic remains fully functional and free — Pro is an optional upgrade on top, designed for musicians who want higher quality, more precision, and advanced practice tools.
Classic includes:
Pro adds all of this on top:
Free: Works on desktop Chrome, Edge, and most Chromium-based browsers.
Pro: Available only in Google Chrome on desktop.
Summary:
👉 Upgrading is never required — but if you want the best experience, Pro is for you.
pro features classic upgrade pitch speed loop formant vocal reducer equalizer clips sequences songs playlists sync
Yes.
Classic works on any desktop or laptop with Chrome or Edge.
Pro only needs to be purchased once per Google account.
As long as you sign in with the same Google account, your Pro access is valid on all your computers. Pro is available only in desktop Google Chrome.
Transpose also works in other Chromium-based browsers (Brave, Opera, Vivaldi).
It is not available for Android, iOS, Safari, or Firefox.
devices sync account multiple computers chrome edge
Transpose is designed for privacy.
We comply with Chrome Web Store policies.
For Pro features like cloud storage, we use Google Sign-In. Please read our privacy policy for complete details.
privacy security data analytics GDPR
Some sites restrict direct access to their audio/video elements.
Transpose may request permissions to capture the tab’s audio as fallback.
permissions privacy security access
If Transpose does not connect or shows a connection panel, start with these general steps:
For specific help, see the FAQ item matching the panel shown in the extension — for example "No playable media", "Activation required", "Start playback", or "Pitch not available".
troubleshooting no media no sound connection error not working tab capture
If Spotify is playing via Spotify Connect (e.g. "Playing on iMac"), the audio is not inside the browser tab, so Transpose cannot connect.
Try this:
Also make sure you only have one Spotify tab playing.
spotify connect web player no media troubleshooting
These messages appear when Transpose cannot find controllable media on the current page:
What to do
If the problem persists, temporarily disable extensions that may interfere with audio or page execution, such as:
Some environments intentionally restrict access to media and advanced browser features. This is common on:
Pro (side panel): Navigate to a page with media — the side panel reconnects automatically. If the side panel is unresponsive, click the Transpose extension icon in the toolbar to re-activate the tab, then close and reopen the side panel if needed.
troubleshooting no playable media page not supported connection tab capture
This message appears in two situations:
New permission needed
The message "Activate Transpose on this site to continue." means the extension needs explicit permission to connect to audio or video on the current site.
This can happen because:
What to do
Keep the permission enabled for that site so Transpose reconnects on future visits.
If it keeps asking
Reconnecting (permission already granted)
The message "Activate Transpose from the browser toolbar to continue on this page." means permission is already granted but the connection to the page was interrupted.
This can happen when:
What to do
After re-activation, Transpose reconnects automatically if media is playing on the page.
troubleshooting activation required allow access add permissions connection disconnected reconnect
Transpose shows "Start playback" with the message "Start audio or video on this page to activate Transpose." This means media exists on the page but is not yet playing, or a page reload or tab navigation caused the connection to go stale.
What to do
troubleshooting start playback connection no media
These messages appear when Transpose can detect audio playing on the page but cannot attach its pitch processor directly to the media element:
This typically happens on sites that use protected, non-standard, or offscreen audio routing.
What to do
Switch to Tab audio mode as a fallback:
If other audio/video extensions are installed, try disabling them — they can conflict with Transpose's audio processing.
On many sites, playback controls (play, loop, markers) still work via the direct connection — only the pitch processing is handled through tab audio.
troubleshooting pitch not available no compatible player detected tab capture tab audio connection
Tab Capture processes all audio from the browser tab.
Use it when direct access to a video/audio element is blocked.
When to use it
How to start Tab Capture
How to exit Tab Capture
tab capture tabcapture troubleshooting settings no media
Free and Pro versions both depend on device performance.
Tips:
Pro users:
troubleshooting audio quality glitches jitter stuttering distortion performance noise
Pitch shifting requires buffering the audio (200–400ms).
This delay between audio and video is normal in Transpose Classic.
Actual delay can vary by device performance, browser load, and site/player behavior.
The Pro version uses a different audio engine with much better latency by default. Pro also has a Low Latency mode (Settings → Audio engine options) for even lower delay — ideal for instrument-following or call-and-response practice.
delay latency sync lag classic pro low latency
Yes.
Transpose Pro uses a more advanced algorithm with:
Low Latency mode
Pro also includes a Low Latency mode (Settings → Audio engine options) that further minimizes perceived delay at the cost of some audio quality. Useful for instrument-following drills or any situation where immediate response matters more than maximum fidelity.
Note: Low Latency mode is not available while Formant shifting is active.
delay latency sync lag pro version features low latency
Yes.
local files mp3 wav mp4 mov video offline from computer
No.
Saving audio streams (e.g. from YouTube) is not allowed by their Terms of Service.
For offline editing, use tools like Audacity with local files.
save export download record audacity mp3
Yes, but only when you cast your desktop.
Transpose works by processing audio in your desktop browser tab before casting; it does not provide native Chromecast app/device integration.
chromecast casting tv
When a new video starts and you make a change to the Transpose controls, it is saved in your Recent history automatically. The video settings are recalled automatically if you play the video later again and open Transpose.
Related setting: Remember settings
settings auto save default remember settings
If Auto Save is enabled and your recent history or video settings are missing after closing Chrome, check the following:
auto save history settings video sync chrome troubleshooting
When a new video starts, Auto Reset resets the controls back to their defaults — so each video starts fresh.
Interaction with Remember settings
settings auto reset default remember settings
Transpose Classic has a simpler loop system with basic markers.
Adding markers
Using markers
Loop toolbar options
Free loops are handy for quick practice ranges, but they lack the higher precision, editing, and sequencing options of Pro advanced loops.
free features looping loops markers
In Transpose Pro, loops are much more precise and flexible than in Transpose Classic.
They use a higher-accuracy algorithm and frame-based timing for smooth, gapless playback.
Markers and the timeline
Selecting a loop range
Setting range in marker list view
Tip: Long-press any marker button to enter range-select mode directly.
Toolbar actions (left to right)
Editing markers
Click the edit icon or the list toggle to switch to the marker list view, where you can:
Tip: Combine advanced loops with clips (see Clips and sequences) to build step-by-step practice sequences.
pro features looping loops markers clips timeline
In Transpose Pro, practice fragments are stored as clips.
A clip is a saved audio range (loop) with its own name, time range, and effect settings — like a bookmark with memory. Clips are tied to a specific section of one track, while saved songs are whole-track entries you can recall later.
Creating a clip
The clip is added to the Clips panel below the markers. In the screenshot above, two clips were created from a song: "Pre" (01:42.4 → 01:54.7) and "Solo" (02:08.6 → 02:32.4).
Clip controls
Each clip card shows:
At the bottom of each clip:
Adding parameters to a clip
Building a practice sequence
Repeating solo at increasing speed
Clips let you practice methodically — gradually increasing speed, changing pitch, or isolating sections — without resetting settings manually each time.
pro features clips sequences looping fragments
Varispeed links pitch and speed together, like a tape deck or turntable — speeding up also raises pitch, slowing down lowers it.
Range and quality
Varispeed only allows a small pitch range (around −2 to +2 semitones). This is by design: within that range, no time-stretch processing is needed, which means the audio stays at its highest possible quality with no stretching artifacts. It is the best choice when you only need a slight pitch correction or fine-tuning.
Pro: Varispeed is available in Pro Trial and Pro Active.
varispeed pitch speed features linked pro quality
By default, Transpose shifts pitch by up to ±12 semitones (one octave up or down).
Enable Extended Range in Settings to expand this to ±36 semitones — three full octaves in either direction.
extended range transpose semitones settings features
Reference Tuning lets you match Transpose to recordings or instruments that use a non-standard pitch standard.
The default is A = 440 Hz (modern international standard). Some recordings, orchestras, or instruments use a different tuning — for example Baroque ensembles often use A = 415 Hz, and some recordings use 432 Hz or 443 Hz. If you practice along with such material, everything will feel slightly off even when the transposition looks correct.
How it works
Reference Tuning uses two independent values:
Transpose calculates the difference and applies it automatically so your pitch adjustments stay in tune with both.
Practical workflow
Built-in presets
Both Track and Instrument have quick-select presets:
| Preset | Frequency |
|---|---|
| French Baroque | 392 Hz |
| Baroque | 415 Hz |
| Classical | 430 Hz |
| Earth frequency | 432 Hz |
| Modern | 440 Hz |
| — | 442 Hz |
| — | 443 Hz |
| — | 445 Hz |
| Chorton | 465 Hz |
Pro: Reference Tuning is available in Pro Trial and Pro Active.
pro features reference tuning tuning 432hz 440hz baroque pitch settings
Formant control changes the timbre (voice color) without affecting pitch.
pro features formant timbre voice sound quality
The Vocal Reducer lowers vocals in stereo music tracks so you can practice along more easily. Use it as a voice reducer on YouTube or any other site Transpose supports.
It intelligently targets center-panned vocals across multiple frequency ranges while preserving the instruments around them, more precise than basic vocal removal tools.
It works best on commercially mixed stereo tracks where vocals are centered. It will not fully isolate or remove vocals; it is designed as a practice and karaoke tool, not a studio separator. Results vary depending on the mix.
Controls:
Vocal Reducer (Amount)
The main dry/wet control. Drag it up to hear more of the reduced signal.
Intensity
Controls how aggressively the reducer suppresses detected vocal content.
Focus
Controls how narrowly the reducer targets vocal frequencies.
Range (Low Hz / High Hz)
A dual-handle slider that defines which frequencies the reducer is active on (20 Hz – 20 kHz, logarithmic scale).
Stereo Bias
Shifts the center detection point left or right.
Tips:
pro features vocal reducer karaoke remove vocals practice voice reducer
The Equalizer (EQ) lets you shape the tone of the audio by boosting or cutting specific frequency ranges. It is useful for making instruments stand out, reducing muddiness, or adjusting the overall sound to your preference while practicing.
The EQ has 6 bands, each represented as a colored dot on a visual frequency curve. You can drag the dots up or down to boost or cut, and left or right to change the target frequency.
Bands and their default roles:
| Band | Default type | Default frequency | Typical use |
|---|---|---|---|
| 1 | High Pass | 30 Hz | Cuts rumble and sub-bass below a cutoff point |
| 2 | Low Shelf | 120 Hz | Boosts or cuts the bass region as a whole |
| 3 | Peaking | 350 Hz | Targets the low-mid range (warmth, muddiness) |
| 4 | Peaking | 1200 Hz | Targets the mid range (vocals, guitar body) |
| 5 | Peaking | 3500 Hz | Targets the upper-mid/presence range (clarity, bite) |
| 6 | High Shelf | 9000 Hz | Boosts or cuts the treble region as a whole |
How to use it:
Built-in presets:
Tips:
pro features equalizer eq tone frequency bass treble presets
Yes.
Pro: Cloud sync is a Pro feature. Classic stores settings locally in the browser only.
pro sync account devices cloud sync songs playlists clips
The Workspace has a History section with two tabs: Recent and Saved.
Saving a song
Managing playlists
Pro: The Saved tab and playlist organization are Pro features. Classic has access to Recent history only.
pro features history saved playlist save cloud songs library
The Workspace is Transpose Pro's dedicated side panel, always visible alongside the page you are playing. You can resize it by dragging the left edge of the panel — widen it to see more controls at a glance, or narrow it when you need more room for the page.
Scenes
Scenes let you create different panel layouts for different workflows. Transpose Pro comes with three scenes — cycle through them by clicking the Scene button in the toolbar.
The built-in defaults are:
You can fully customize each scene. Any changes you make (expand, collapse, enable, disable, reorder) are saved to the active scene automatically.
Enabling and disabling panels
Open the Scene Layout panel (click the scene icon ▸ Scene Layout) to see all nine available panels: Transpose, Pitch, Formant, Vocal Reducer, Equalizer, Speed, Varispeed, Time Display, Notes.
Expanding and collapsing panels
Each enabled panel can be expanded or collapsed by clicking its header:
Each scene remembers which panels are expanded or collapsed, so switching scenes instantly restores your preferred layout.
Resetting scenes
To restore all scenes to their factory defaults, open Settings → Reset Scenes.
Pro: Scenes and the Workspace are available in Pro.
pro features workspace scenes layout side panel expand collapse enable disable resize panels
Yes, you can easily switch between the two interfaces. Open the Settings page at the top right, then choose Open in popup or Open in side panel .
Pro keeps the improved audio engine in popup mode.
pro workspace side panel popup
Yes. Transpose has built-in keyboard shortcuts for the most common actions.
Default shortcuts
| Action | Key |
|---|---|
| Play / Pause | Space, Enter |
| Transpose up | Arrow Up |
| Transpose down | Arrow Down |
| Pitch up | Shift + Arrow Up |
| Pitch down | Shift + Arrow Down |
| Speed up | = / Numpad + |
| Speed down | - / Numpad - |
| Seek forward | Arrow Right |
| Seek backward | Arrow Left |
| Toggle loop | L |
| Add marker | M |
| Jump to marker 1–9 | Digit 1–9 |
Shortcuts are active when the extension panel is focused. They are automatically disabled when typing in text inputs.
Custom shortcuts (Pro)
Pro users can remap any shortcut. Go to Settings → Keyboard shortcuts → Custom shortcuts, then click any action to reassign it.
keyboard shortcuts hotkeys keys pro features settings
Click Try Pro in the extension.
Free: Works on desktop Chrome, Edge, and most Chromium-based browsers.
Pro: Available only in Google Chrome on desktop.
pro trial account free trial
Transpose uses Google Sign-In to provide a secure and simple login experience.
We do not currently support other login methods like email and password.
login account password security authentication
After your trial you can pick:
Payments are processed by Paddle.
pro subscribe payment paddle billing buy purchase
No.
A single Transpose Pro subscription is linked to your Google account, not to a specific device.
👉 You only need one subscription per Google account, even if you use multiple devices.
pro subscribe payment account devices license
Use the official Paddle Customer Portal to manage your subscription:
From there you can:
If you cancel in the portal, your subscription usually stays active until the end of the current billing period, then stops renewing.
pro subscribe cancel paddle billing account manage subscription
In the Customer Portal → Payment methods → Update.
pro payment paddle billing account credit card
Invoices are available in the Customer Portal.
billing invoice paddle receipt
In 2021, the Chrome Web Store removed support for paid extensions.
As a result, the original one-time-payment Pro version was made free for everyone.
That version is now called Transpose Classic.
We believe that making music is for everyone. That's why the core of Transpose is a powerful, free tool for your daily practice sessions. It is our contribution to the music community, to help as many people as possible grow and enjoy playing.
The Classic version contains all the features from the original extension.
The new Transpose Pro is an upgraded edition with more advanced features and separate licensing.
If you once bought the old Pro, you now effectively have the same version with Classic.
Upgrading is not required. With Classic you keep the same experience you've always had.
classic free pro history legacy old version
Didn't find what you were looking for? Contact support.
