This means the world coming from an educator thank you!

You've actually identified the exact workflow we designed for:

For watching educational content:

• Speed control blast through familiar material at 3x 4x, slow down to 0.8x for complex derivations

• A-B Loop replay a key explanation or demonstration until it clicks

• Screenshot capture diagrams, equations, key slides at full resolution for your notes

• Keyboard shortcuts navigate your learning without breaking focus

Totally valid concern nobody wants an extension that turns their browser into a space heater.

Here's why Video Controls Plus stays light:

• Activates only on video pages the extension doesn't inject anything on tabs without HTML5 video elements

• Minimal background processing no persistent background scripts eating resources when you're not using it

• Manifest V3 architecture built on the modern extension standard that enforces better resource management by design

• Clean memory footprint controls attach to the video element directly, not running heavy scripts on the entire page

• CSS-based filters visual filters use GPU-accelerated CSS, not CPU-heavy canvas manipulation

• 932 automated tests we test not just features but also that things don't break or bloat unexpectedly

In practical terms: with 15+ tabs open, you should see no measurable difference in memory usage compared to not having the extension installed unless a tab actually has a video you're actively controlling.

Really appreciate this question privacy is something we take seriously, not just as a checkbox.

Here's the transparent breakdown:

• No tracking of videos watched we don't know or care what you're watching

• No browsing history collection your site visits are yours alone

• No data sold to third parties ever

• Privacy-first analytics only aggregated, anonymous usage patterns (like "how many users use speed control") to improve the product

• Manifest V3 compliant built on the latest extension standard which itself has stricter privacy boundaries

• Minimal permissions we only request what's needed to interact with HTML5 video elements on the page

• Cloud sync is opt-in only if you choose to sign in with Google; works fully offline otherwise

The extension needs page-level access to detect <video> elements that's the permission you see. But it doesn't read page content, form data, or anything else.

Love that you're thinking about accessibility it's something we care about deeply. Here's a glimpse of what's ahead:

What's live today:

• Full speed control suite (0.1x 16x)

• A-B looping, audio boost, filters, screenshots

• Customizable keyboard shortcuts

• Cloud sync via Google sign-in

• Chrome, Firefox, and Edge support

What's on the horizon:

Thanks for noticing this is genuinely one of the hardest parts of building a browser extension!

Here's a peek behind the curtain:

• Built with WXT framework a modern extension framework that handles a lot of cross-browser plumbing

• React 19 + TypeScript single codebase for all UI surfaces, strongly typed to catch platform-edge cases early

• 932 automated tests our test suite runs across the extension to catch regressions before they hit any store

• Manifest V3 compliant built natively for MV3 from the start, not ported from MV2

• One codebase, three builds platform-specific quirks are handled at the build layer, not in feature code

The goal was always: you install it on your browser of choice, and it just works the same way. No "Firefox version is behind" or "Edge is missing features" situations.

Note-takers, this one's for you!

Here's how the screenshot feature works:

• Full resolution capture grabs the video frame at the actual video resolution, not your viewport size

• What you see is what you get if the video is 1080p or 4K, your screenshot reflects that

• Instant download captured frame saves directly to your device

• Keyboard shortcut enabled bind it to a key and capture frames without pausing

• Works with filters if you've applied brightness/contrast adjustments, the screenshot captures that too

This is perfect for grabbing diagrams from Khan Academy lectures, code snippets from programming tutorials, or key slides from conference talks all at full quality.

Absolutely and this is a more common need than most people realize!

The video filters in Video Controls Plus include:

• Brightness crank up those dimly-shot lecture videos

• Contrast make text overlays and subtitles pop more clearly

• Grayscale reduce visual noise when you just need to focus on content

• Saturation adjust color intensity for comfort during long sessions

• More filter options fine-tune the video display to your eyes' comfort level

For language learners specifically:

Yes cloud sync is built in! This was a priority feature because we knew power users don't just use one machine.

Here's how it works:

• Google sign-in quick, secure authentication

• Settings sync across devices your keyboard shortcuts, speed presets, and preferences travel with you

• Cross-machine, cross-browser set it up on Chrome at work, find the same config on Firefox at home

• Automatic changes sync in the background, no manual export/import needed

• Firebase-powered reliable, fast, and secure backend

The idea is simple: your video workflow should follow you, not the other way around. Configure once, use everywhere.

Good news for creators yes, all filters apply in real-time with zero perceptible lag!

Here's why it's smooth:

• CSS/Canvas-based processing filters are applied at the rendering layer, not by re-encoding video

• No buffering interruption the video keeps playing as you adjust filters

• Live adjustment slide brightness up, see the change instantly, fine-tune on the fly

• Lightweight on resources no heavy CPU usage, no frame drops

• What you see is real-time perfect for quick visual checks before downloading content for editing

For creators reviewing their own uploads:

YouTube's native speed control is honestly fine for casual use but if you're a power user, here's where Video Controls Plus levels up your experience:

The killer combo is speed + looping + keyboard shortcuts. Imagine watching a 3-hour lecture at 3x, hitting a complex topic, instantly slowing to 1x, setting an A-B loop, reviewing it twice, then jumping back to 3x all without touching your mouse.

"YouTube gave us 2x. We said: 'Those are rookie numbers.'"