Anime4K, built for anime
Anime4K is a super-resolution algorithm designed specifically for anime and line art. On drawn content it beats generic upscalers, cleaning up edges and doubling resolution without the muddy look photo models give anime.
Free Anime4K upscaler · Runs in your browser
Anime Upscaler
Free & Private (Anime4K)
Sharpen anime line art and upscale it 2× on your own graphics card. Nothing is uploaded.
Private, nothing leaves your device No sign-up100% free
Drag & drop a JPG or PNG image, or click to browse
Choose imageQuality
Content
Image content type
Scale
Upscale anime and illustrations 2× right in your browser, image or video. Powered by Anime4K running on your own GPU, it sharpens line art and doubles the resolution, free, with no sign-up, no watermark and nothing uploaded.
- Anime video upscaler
- Upscale anime
- Anime4K online
- Enhance anime art
- Upscale a manga panel
- Anime image upscaler
Anime4K
The upscaler built for anime and line art
Image or video
Upscale a still or a short clip 2×
Private & free
On your GPU, no upload, no account
Three steps
How it works
Choose image or video
Pick the mode, then drop in your anime image (JPG/PNG) or a short anime clip (MP4/MOV/WebM). It stays on your computer.
Upscale with Anime4K
Click Upscale. Anime4K runs on your GPU and doubles the resolution while sharpening the line art, the model it was literally built for.
Compare & download
See the before/after (or preview the clip), then download the upscaled PNG or MP4.
Built for creators
Why people choose it
Image and video, one tool
Upscale a single anime picture or a short anime clip in the same place: stills export as PNG, clips as MP4 with the audio kept.
Runs on your GPU, in the browser
Anime4K runs through WebGPU on your own graphics card, so upscaling anime is fast and completely local, and nothing is uploaded.
100% private
Your art and clips never leave your device: no upload, no account, no server. Safe for original work and anything unreleased.
No credits or watermark
Because it runs on your machine there is no per-file charge and nothing stamped on your image or video, a genuinely free anime upscaler.
Nothing to install
It is a web page, not an app or a shader pack to configure. Open it, drop your anime in, and download the upscaled result.
How to upscale anime for free
Anime and illustration need a different upscaler than photos. Generic photo models tend to smear line art. Anime4K is a super-resolution algorithm built specifically for drawn content, and this tool runs it in your browser. Choose image or video, drop in your anime, and it upscales 2× on your GPU while sharpening the lines. You download the result as a PNG or an MP4.
Whether you want an anime image upscaler for a wallpaper or panel, or an anime video upscaler for a short clip, it is the same fast, local, free flow, with weights tuned for anime, not photographs.
Anime4K, in the browser, private
Running Anime4K online usually means someone else’s server and an upload. Here it runs entirely on your own machine through WebGPU, so your art and clips stay private and there is nothing to pay, sign up for, or install. It is the easy way to enhance anime art or upscale a manga panel without handing your work to a website.
The upscaler is at its best on clean anime and illustration, exactly what Anime4K was trained for, so line art, cel-shaded frames and drawn backgrounds all sharpen nicely as they double in size.
What to expect
This is a 2× upscaler tuned for anime, not a magic restorer: very small or heavily compressed sources will improve but won’t become flawless. For video, keep clips short: browser upscaling is heavy. And because it runs on WebGPU, you’ll need the latest Chrome or Edge on desktop; the tool tells you clearly if your browser can’t run it.
How it compares
A free, private alternative to online anime upscalers
Most anime-upscaler sites upload your art to a server and gate the free tier. This runs Anime4K on your own GPU, locally, for free.
Your artUploaded to their serversNever leaves your device
ModelGeneric / photo-firstAnime4K, built for anime
Sign-upOften requiredNone
Credits / watermarkCommon on free tierNone
CostFreemium / paidFree
Questions
Frequently asked questions
How do I upscale anime for free?
Choose image or video mode, drop in your anime, and click Upscale. Anime4K runs on your GPU in the browser and doubles the resolution while sharpening the line art. Download the result as a PNG or MP4, free, no sign-up, nothing uploaded.
What is Anime4K?
Anime4K is an open-source super-resolution algorithm designed specifically for anime and line art. It reconstructs edges and detail far better on drawn content than generic photo upscalers, which tend to blur anime.
Can I upscale both anime images and anime videos?
Yes. Switch between image and video mode on the same page. Images export as PNG; short clips export as MP4 with the audio kept.
Is my art uploaded to a server?
No. Everything runs on your own device through WebGPU. Nothing is uploaded and no account is needed, so it is safe for original and unreleased work.
Does it work on manga panels and illustrations?
Yes, Anime4K is built for line art, so manga panels, illustrations and cel-shaded frames upscale especially well. Pick image mode and upload the panel.
How much bigger does it make things?
It upscales 2×, so a 1000×1400 panel becomes 2000×2800, and a 640×360 clip becomes 1280×720.
Why does it say my browser isn’t supported?
Anime4K here runs on WebGPU, available in the latest Chrome and Edge on desktop. If you see the unsupported message, update or switch browsers and reload.
Is there a watermark or credit limit?
No. There is no watermark, no credits and no quota. Because it all runs on your own machine, it is free and unlimited.
Keep going
More free browser tools
Upscale your first anime
Drop in an anime image or clip and download a sharper, 2× version, free, private, and with no account.
Runs entirely in your browser. Your files never leave your device.
