For Chromebook users, finding a way to control a Roku device without downloading an app from the Play Store typically leads to a few web-based alternatives. While Roku does not provide an "official" browser-based remote for general consumers, several third-party and developer-focused tools fill the gap. Top "No-Download" Roku Remote Options Remoteku (via SourceHut)
Why this is better than an app:
On Your Chromebook, Open the Chrome Browser. Any Chromium-based browser works, but Chrome is optimized for Chrome OS.
Instant Accessibility: No waiting for downloads or installations. You only need a web browser.
Next time you can't find the clicker, just open a new tab!
Q: Can I control multiple Roku devices from one Chromebook?
A: Absolutely. From my.roku.com, click “My linked devices” and switch between them. The web remote will instantly reconnect.
Roku remote online for Chromebook — no download: a quick look
If you want to control a Roku device from a Chromebook without installing apps, here are practical options and limitations.