Ad-skip, boost, speed, loop & PiP for YouTube.
YouTube helper extensions can't be listed on the Chrome Web Store, so this one is a direct download.

YT Tools packs the YouTube upgrades power users want into one extension: auto ad-skip, volume boost past 100%, fine-grained speed control, A-B section looping, one-click HD screenshots, and picture-in-picture. It makes watching, studying and clipping on YouTube dramatically better.
Because YouTube helper extensions aren't allowed on the Chrome Web Store, YT Tools is a direct download you install yourself. The core features run right in your browser.
Skips skippable ads the moment they appear so you keep watching.
Push volume beyond 100% for quiet videos.
Fine-tune playback speed beyond YouTube's presets.
Set a start and end point to loop a section — great for learning.
Grab a clean, high-resolution frame from any video.
Pop the video out into a floating mini-player while you work.
This extension is a self-hosted download, so it installs via Chrome's Developer mode.
YouTube helper extensions are restricted by Chrome Web Store policy, so YT Tools is offered as a direct, self-hosted download.
It auto-skips skippable ads as soon as the skip becomes available, so you spend less time waiting.
Yes, the core tools are free with no login — a Codaiman product.
A free, self-hosted browser extension by Codaiman. Download, load it in Chrome, and you're set.
Download (.zip) — Free