Free AI Video Upscaler
Turn a low-quality video into a clearer, sharper one.
- No signup
- Nothing uploaded
- Any clip length
Drop a video here or choose a file
MP4, MOV, M4V, MKV or WebM · up to 2 GB
How this free video upscaler works
- Choose a clip. The browser reads its resolution, frame rate and size on your device; nothing is uploaded.
- Pick 1080p, 2K or 4K and a quality tier. The upscaler runs on your graphics card through WebGPU and shows a time estimate before it starts.
- Compare before and after on the same frame, then download the result as MP4 (original audio kept) or WebM.
Clips of any length: the estimate before Start gives the time, and progress is saved as it goes. Upscaling goes up to 4×, so 720p and 1080p videos can reach 4K and 480p can reach 2K.
Needs a browser with WebGPU: current Chrome, Edge or Safari — on a phone, Chrome on Android 12 or newer.
Questions people ask
- Is 4K upscaling actually 4K?
- The file is a real 3840 × 2160 video. How much detail it shows depends on the source: a clean 1080p clip gains crisper edges, while a heavily compressed 360p clip stays soft, because upscaling can only work with what the frame already contains.
- Is upscaling to 4K worth it?
- It pays off when the video will play on a 4K screen or go to a platform that gives 4K uploads a better encode, such as YouTube. For a clip that will only be watched on a phone, 1080p looks the same and finishes much sooner.
- Is there a free 4K quality enhancer?
- Yes — this one. It runs in your browser on your own graphics card, so there is no upload, no account, no queue and no watermark; the limits are 2 GB per file and 4× enlargement.
- Does it work on a phone?
- Yes, in a browser with WebGPU such as Chrome on Android 12 or newer. A phone offers the same sizes up to 4K; the job runs several times slower than on a computer, and the time estimate follows the phone as it warms up.
- Is my video uploaded anywhere?
- No. The clip is decoded, upscaled and re-encoded on your own device, and the result is written to your browser's private storage for you to download. The page only fetches its own files and the model files — your video never leaves the browser.
- Will it fix a blurry video?
- It makes the video bigger with firmer edges and, with the Pro or Ultra quality, without compression blocks. It does not fix blur, camera shake or motion blur, and it never invents detail the frame never had — press "Preview this frame" before a run to see what it does for your clip.