Answers, without the fine print.

Yes. Free includes speed up to 3x, volume boost up to 200%, 3 templates, YouTube captions, and keyboard shortcuts. Pro unlocks 16x speed, 600% volume, subtitle search, and more.

Firefox is available now on Mozilla Add-ons. Chrome is available on the Chrome Web Store.

Yes — any site with an HTML5 video player. Save per-domain presets so Udemy can stay at 1.75x while YouTube stays at 1.25x. Platform guides: YouTube, Udemy, Coursera, and the online courses hub.

Install UVE, open a page with video, and choose a speed preset in the Controls tab. You can also use A to slow down, D to speed up, and S to reset. Free supports up to 3x speed and Pro supports up to 16x. See the video speed controller guide.

Yes. UVE supports playback from 0.1x, which is useful for language learning, tutorials, music practice, and detailed demonstrations.

Yes. UVE uses Web Audio to boost quiet HTML5 video up to 200% in Free and up to 600% in Pro. Increase volume gradually to avoid clipping and protect your hearing. Details: video volume booster.

UVE can use available YouTube captions, search OpenSubtitles with Pro, or load a local .vtt or .srt subtitle file. Subtitle controls are available from the Subtitles tab. Guide: video subtitles.

Yes. Per-site presets can remember different playback settings for each domain, such as 1.75x for Udemy and 1.25x for YouTube.

Buy once on our pricing page (Stripe checkout). Your key appears on the activate page after payment, and we email it from support@systemaweb.com when email delivery is enabled. Open UVE → Settings → Activate license. Lost the email? Use resend on the activate page.

Pro Student is €17 one-time (30% off) with the same features as Pro Lifetime. Verify a school or university email on the student page before checkout. Eligibility checks are based on email domain and may not catch every case — misuse may lead to refund or license revoke.

Refund requests go through Stripe / email support@systemaweb.com. If a payment is refunded, the related Pro license may be revoked. See the refund policy. We usually reply within 1–2 business days.

Preferences stay in browser storage on your device. We do not sell data or track browsing history. Read the full privacy policy.

UVE changes playback locally in your browser. It does not upload the videos you watch or collect your browsing history. Preferences are stored in browser extension storage on your device.

Start video playback, refresh the page, and reopen UVE. Some protected, embedded, or non-HTML5 players may limit browser extension controls. Contact support with the website URL if detection still fails.