Video generation
4K Video Upscaler
Free AI video upscaler that runs in your browser with no watermark, signup, or upload required
- 0community votes
- 2DR by Ahrefs +1 (up) since last check
Ahrefs Domain Rating signal 13 Nov 2026, signal shifted 8 Nov 2026.
A free AI tool that upscales videos in your browser to 1080p, 2K or 4K without uploading files, requiring signup, or adding watermarks.
What it is
4K Video Upscaler is a free, browser-based AI tool for upscaling videos. It runs locally on your device using WebGPU, processing videos entirely on your graphics card with no files uploaded to servers. The tool supports multiple output resolutions (1080p, 2K, 4K) and quality tiers (Fast, Pro, Ultra) suited to different video types. It handles videos of any length without limits and accepts a wide range of formats including MP4, MOV, MKV, WebM, AVI, MPG, VOB, WMV, FLV, DV, and camcorder files (MTS, M2TS, TS). Results can be downloaded as MP4, MOV, MKV or WebM with audio preserved or re-encoded. On computers, batch processing of up to 200 videos is supported. The service requires no account, adds no watermark, and stores results in your browser for 24 hours.
Systems
- Runs entirely in browser on WebGPU with no upload required
- Upscale to 1080p, 2K or 4K resolution
- No signup, watermark or account needed
- Supports videos of any length with progress saved
- Batch upscale up to 200 videos at once on computer
- Opens MP4, MOV, MKV, WebM, 3GP and converts older formats
- Quality tiers from 2× passes to 4× restoration
- Deinterlace interlaced video during conversion
- Download results as MP4, MOV, MKV or WebM with audio
- Works on phones with Chrome, Edge, Samsung Internet or Safari
Pricing
Pricing model: Free
Want to see what 4K Video Upscaler does next? Follow them for milestones, new products and stories by email.
4K Video Upscaler metrics
Signal readout for 4kvideoupscaler.com: Ahrefs Domain Rating and Majestic link signals, arrows for the change since the last scan.
- 2 Domain Rating +1 (up) since last check
- 11 Trust Flow no change since last check
- 19 Citation Flow no change since last check
- 3 Referring domains no change since last check
- 7 External backlinks no change since last check
Ahrefs Domain Rating signal 13 Nov 2026, signal shifted 8 Nov 2026. Strongest signal topic: Computers/Multimedia (11). Majestic signal 6 Nov 2026, signal shifted 6 Nov 2026. Link signals from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
4K Video Upscaler domain signal
Show the signal details
Public RDAP record, last read 12 Nov 2026, 21:21 UTC.
- Domain age 2 months
- Registered
- Expires
- Registrar Cloudflare, Inc.
- DNSSEC Not signed
4K Video Upscaler post-launch signal
The record for 4K Video Upscaler after its launch on Nexora Launch (6 November 2026), from the readings we keep.
- 2 Domain Rating (Ahrefs) +1 (up) since launch
at launch: 1 (6 Nov 2026); latest: 12 Nov 2026 - 11 Trust Flow (Majestic)
first measured 6 Nov 2026 - 3 Referring domains (Majestic)
first measured 6 Nov 2026
Day 7 since launch. Next receipt: day 30, 6 Dec 2026. A change here is a reading, not a claim about its cause; lots of things move these figures. Anything we do not measure is not shown.
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Quick answers
- Is 4K upscaling actually 4K and is it worth it?
- 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 one stays soft. It pays off on a 4K screen or for platforms like YouTube that give 4K uploads better encoding, but for content watched only on a phone, 1080p looks the same and finishes faster.
- Which files can this upscaler open and is it free?
- Yes, it is completely free. It runs in your browser on your own graphics card with no upload, account, queue or watermark. It opens MP4, M4V, MOV, MKV, WebM and 3GP, and converts older formats including AVI, MPG, VOB, WMV, FLV, DV, AVCHD camcorder files, ProRes, 10-bit H.264 and MPEG-2 in MKV. Enlargement goes up to 4×.
- Does it work on a phone?
- Yes, in a browser with WebGPU: Chrome, Edge or Samsung Internet on Android 12 or newer, or Safari on iPhone with iOS 26. Phones offer the same output sizes up to 4K, but processing runs several times slower than on a computer, and the time estimate adjusts as the phone warms up.
- Is my video uploaded anywhere?
- No. Your video is decoded, upscaled and re-encoded entirely 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 AI model files—your video never leaves your browser.
- How long does upscaling take?
- Processing time depends on your device. On a Mac with Apple silicon, one minute of 30fps video takes about 51 seconds from 1080p to 4K with Fast quality, about 16 minutes with Pro from 720p, and about 31 minutes with Ultra. Phones are several times slower. The page measures your device before starting and shows an accurate estimate.
4K Video Upscaler has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
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