QRix
One click to 480p / 720p / 1080p / 4K with correct aspect ratio.
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Yes — completely free, no watermark, no signup, no file limits beyond your device's memory.
No — everything runs on your device in the browser. Your videos never leave your computer.
Real MP4 (H.264) where your browser can encode it — Chrome, Edge and Safari — with WebM (VP9) as an automatic fallback elsewhere. Everything is transcoded on your device; nothing is uploaded.
Scaling up gives you the pixel count; for AI detail enhancement use the AI Image Upscaler on extracted frames or wait for the cloud video engine.
Change Resolution rescales your video to standard sizes — 480p for messengers, 720p/1080p for social and web, 4K for displays — preserving the aspect ratio with letterbox-free scaling. Everything renders through the on-device pipeline with live progress.
It's free, private and works right in your browser — no signup, no watermark.