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Transpose pitch & cents · playback speed · volume — for any webpage audio or video Capo sits in your toolbar and re-tunes the audio of anything that plays in your browser. Open it on YouTube, Spotify Web, SoundCloud, Bandcamp, or anywhere else music or video plays, and three controls appear: • Pitch — transpose ±12 semitones, with ±50 cents of fine-tune for the in-between notes. Tempo stays the same. • Speed — 0.25× to 3× playback. Pitch stays the same. • Volume — up to 300%, so you can lift quiet sources above your system's ceiling. The popup also gives you transport controls — play/pause, skip back/forward, restart, and a scrubbable timeline — so you don't need to leave it to step through a track. Settings stick per page. Tune a song once and Capo will re-apply the same pitch, speed, and volume the next time you open it. Local by default. Your settings are stored on your device. Capo does not collect listening history, URLs, or audio. Anonymous product diagnostics are opt-in and can be turned off at any time.
◆ PitchLab MK2 — Virtual Deck Engine
PitchLab MK2 · browser vinyl pitch & RPM controller for Discogs, Bandcamp and YouTube. PitchLab MK2 is a browser-based virtual turntable inspired by the pitch control of the Technics SL-1200 MK2. It allows you to change the playback speed of audio on supported websites (YouTube, Discogs and Bandcamp) in a turntable-style way. Speed and pitch are always linked: changing speed also changes pitch, with no key lock, master tempo or time-stretching. PitchLab MK2 is designed for DJs, crate diggers and vinyl enthusiasts who want to hear how music actually behaves when played faster or slower. • Inline playback widget A compact widget appears directly on supported pages, allowing real-time pitch, speed and Auto BPM control (Advanced tools) without leaving the website. • 33 / 45 RPM reference Switch between classic turntable speeds for accurate playback behaviour. • Pitch control (±8%) Fine speed adjustment with a clear visual reference. • Quartz lock indicator Visual feedback when playback speed is close to the original reference. • BPM tools (manual) Tap tempo and BPM reference to understand how tempo changes with playback speed. • Auto BPM detection (Advanced tools) Optional automatic BPM estimation from the browser audio stream (availability depends on the target website). • Nudge controls Small speed adjustments for precise alignment. • Full deck reset Instantly restore speed, pitch and BPM settings to default values. • Output filter Optional high-pass filter, low-pass filter and gain control applied in real time. • Visual level meters Peak and VU-style meters to assist while listening. Bandcamp limitations Due to how Bandcamp handles audio playback, some advanced features (such as output filtering) may be unreliable or not supported on Bandcamp. This is a platform limitation and not a bug in PitchLab MK2. Privacy and permissions • The extension runs only on supported websites and only when triggered by the user. • All functionality operates locally in the browser. • No personal data, browsing activity or audio content is collected, stored or transmitted. • No external servers are contacted. • The “tabs” permission is used only to identify the active tab in order to apply playback control. • The “storage” permission is used only to save local user preferences (such as interface settings and tool states) inside the browser.
SoundAdapt
Perfect for Musicians, Producers, DJs, Streamers, Podcasters, Content Creators, and Sound Enthusiasts. 🔹 Precision Audio Control. Pitch Shift & Tuning: Transpose tracks in semitones or retune to alternative standards (432 Hz, 444 Hz, etc.). 🔹 Speed Control: Adjust tempo up to 4× speed for creative or practice use. 🔹 Looper: Mark A/B points and loop favorite sections seamlessly. 🔹 Studio‑Grade Effects. 10‑Band Graphic EQ: Shape your sound with surgical precision. 🔹 Bass Boost: Add depth and power to low frequencies. 🔹 Reverb: Simulate rooms, halls, and creative ambiences. 🔹 Volume Gain: Push loudness with clean gain staging up to 400%. 🔹 Cross‑Platform Reliability. Works directly in your browser — no plugins, no installation. Compatible with YouTube, Vimeo, SoundCloud, Spotify Web, and most HTML5 players. Lightweight DSP ensures smooth playback without lag. 🔹 Minimalist UI. Sleek, modern interface with intuitive sliders and knobs. Instant feedback and responsive controls. Designed for both casual listeners and professional users. 🔹 Open any online video or audio. (Enable Capture Mode if playback requires authorization on SoundCloud or similar platforms.) 🔹 Launch SoundAdapt controls from the extension menu. 🔹 Adjust pitch, tuning, speed, EQ, bass, reverb, or loop sections. 🔹 Enjoy customized playback in real time.
Transpose Live - Real-time Pitch & Vocal Remover
Transpose Live provides real-time pitch shifting, vocal remover, EQ, and reverb for web media. Transpose Live gives you real-time control over browser audio with low-latency DSP and local AI processing. Built for musicians, learners, and creators, it lets you adjust sound while media is playing in Chrome, without exporting files or setting up complex routing. - Pitch Shift (Free): precise semitone control for practice and transcribing - Chorus (Free): adds width and thickness to vocals and instruments - Limiter (Free): controls peaks for a more stable listening level - Vocal Remover (Pro): AI-based real-time vocal/instrument separation - EQ (Pro): detailed tone shaping with frequency control and presets - Reverb (Pro): adds space and ambience from subtle room to wider hall feel - Free: Pitch, Chorus, Limiter - Trial: full Pro access for 3 days (no auto-charge) - Pro: unlimited access to Vocal Remover, EQ, and Reverb Privacy and processing Audio effects are processed in the extension pipeline during playback. No manual file upload is required for real-time use.
JamKit - Musician's Toolbox for YouTube
The ultimate musician's toolbox for YouTube. Control pitch, tempo, and create A/B loops with ease. JamKit is a free toolbox for musicians, designed to give you better control over your learning and transcription process directly on YouTube. The goal of JamKit is to offer a powerful tool that gathers the most essential features for practicing music. The extension is lightweight, fast, and integrates directly into the YouTube interface. JamKit gives you complete control over the audio with a clean and collapsible interface. ► High-Quality Pitch Shift Change the pitch of any video in semitone steps (±12) without affecting the playback speed. A high-quality vocoder engine lets you practice, sing along, or transcribe in the exact key that suits you. ► Precise Tempo Control Slow down complex or fast passages (down to 0.25x speed) or speed up the tempo (up to 2.0x) without affecting the pitch. This is perfect for carefully analyzing and practicing difficult riffs, solos, or drum patterns. ► Smart A/B-Looping This is a powerful practice tool. Click "Start" when the section you want to practice begins and "Stop" when it ends. JamKit will then loop the section automatically, over and over, until you click the "X" to clear the loop. This simplifies the process of mastering a difficult passage. ► Adjustable Quality (CPU Control) Need to save battery or running on an older computer? No problem. The "Quality" slider ("Low", "Good", "High") lets you adjust the audio processing block size. A lower setting reduces CPU load while still providing great quality. - On/Off Toggle: Easily disable the entire extension with a single click. - Central Reset Button: Instantly reset all settings (pitch, tempo, and loop) with one button press. - Collapsible UI: The tool sits nicely in the YouTube sidebar and can be collapsed so it's not in the way when you just want to watch. HOW TO USE JAMKIT - Find a video on YouTube. - The JamKit panel automatically appears in the sidebar on the right. - Use the controls. It's that simple! JamKit is a passion project provided for free to the music community. The powerful, high-quality pitch-shift feature in this extension is made possible by the "web-audio-phase-vocoder" library, created by Olivier L. B. (olvb). He generously released this work into the public domain (using The Unlicense), which allows projects like JamKit to build upon it and provide these tools to the community for free.
