Video Speed & Playback Control — Tach

Set a default video speed on every site, plus volume boost, per-site memory and YouTube cleanup. Free, private, open source.

Watch everything at your speed. Tach sets your preferred playback speed automatically on every site that uses HTML5 video — no more reaching for the player menu on each new tab. When you want to adjust on the fly, a clean popup gives you a slider, +/- buttons, one-click presets, and keyboard shortcuts. Go from a frame-by-frame 0.01× crawl all the way up to a 4.0× sprint. Too quiet? Boost the volume up to 300% and even out loudness from the same popup. FEATURES • Default speed on every site — pick it once, it applies everywhere. • Quick manual control — drag the slider (snaps to 0.25), nudge by 0.05 with +/-, or tap a preset (0.5×–2×, fully editable). • Keyboard shortcuts — speed up, slow down, or reset without opening the popup. • Per-site memory — remember a different speed for, say, YouTube vs. your lecture site; it sticks for that domain. • Frame-by-frame slow motion — drop all the way to 0.01× to crawl through the exact moment you need (a sports replay, a tutorial step, a tricky dance move), then back up to 4.0× to power through the slow parts. • Volume boost — raise a quiet video from 100% up to 300% in the popup, and remember the boost for a site if you like. A built-in limiter reduces clipping at high boost. Off until you use it. • Loudness normalizer — Off, Light or Strong evens out quiet dialogue and loud moments on every site, and applies to open tabs right away. • Honest about limits — some videos can't be boosted safely (audio served from another site without permission, protected/DRM video, or a player that already processes its own audio). Tach is built to leave the ones it can recognise untouched, and the popup tells you why. Videos inside embedded frames aren't covered. • YouTube cleanup — hide Shorts, comments, live chat, games/extras and sponsored tiles, keep chat out of fullscreen, and skip video ads by seeking past them. Each is a toggle in settings (live chat, extras, sponsored tiles, fullscreen chat and ad skipping start on). • Copy Transcript — grab a YouTube video's transcript to your clipboard in one click (with optional timestamps). • Looks the way you like — light/dark/auto theme and a custom accent color. PRIVATE BY DESIGN Tach has no analytics, no tracking, and makes no external network requests. Audio is processed live in the page and is never recorded or transmitted. Your settings live in your browser and sync through your own account — they are never sent to us. Read the full policy: https://domdhi.github.io/Domdhi.Tach/ Free, open source (MIT), and open about exactly what it does.