waifu2x

Plans and prices

Every plan, in full

On the record

Account

The privacy policy says the site can be used for free without logging in; Patreon login uses a Patreon user ID and records API call counts for that ID.waifu2x.net · read 12 Oct 2026

Analytics and advertising

The site says it uses Google Analytics and Google Adsense, and that third-party publishers may use cookies for personalized advertising.waifu2x.net · read 12 Oct 2026

Batch processing

Yeswaifu2x.net · read 20 Sep 2026

Browser limit

The in-browser page indicates that 4x upscaling is not supported there.unlimited.waifu2x.net · read 12 Oct 2026

Browser version

unlimited:waifu2x is described as an experimental in-browser version with selectable backend, model, denoising, tiling, TTA, and alpha-channel options.unlimited.waifu2x.net · read 12 Oct 2026

Desktop app

Yeswaifu2x.net · read 20 Sep 2026

Desktop availability

The project repository links a Windows installer and installation instructions for Windows, macOS, and Ubuntu.github.com · read 12 Oct 2026

Developer use

The project repository says its dependencies include Python 3.10 or later and PyTorch, and links a waifu2x Python API via torch.hub.load.github.com · read 12 Oct 2026

Formats

The main site offers PNG and WebP output formats.waifu2x.net · read 12 Oct 2026

Hardware

The GitHub README lists an NVIDIA GPU, Torch7, and NVIDIA CUDA among the project dependencies.github.com · read 12 Oct 2026

Image processing

The web tool offers artwork, artwork/scans, and photo styles, with selectable noise reduction and upscaling options.waifu2x.net · read 12 Oct 2026

In-browser version

The separate unlimited:waifu2x site is described as an experimental in-browser version and lists WebGPU support.unlimited.waifu2x.net · read 12 Oct 2026

Input formats

PNG, JPGwaifu2x.net · read 20 Sep 2026

Input limits

The main site lists a 5 MB file-size limit, 3000×3000 px for noise reduction, and 1500×1500 px for upscaling.waifu2x.net · read 12 Oct 2026

Input methods

Images can be selected by drag and drop, entered as a URL, or chosen as a file.waifu2x.net · read 12 Oct 2026

Limit on noise reduction

The website advises using noise reduction only when the image actually has noise because it may otherwise cause the opposite effect.waifu2x.net · read 12 Oct 2026

Local use

The project's GitHub README documents command-line and self-hosted web-app use, including batch conversion.github.com · read 12 Oct 2026

Maintainer identity

The main site links to the nunif GitHub account; the opened pages do not state a headquarters or founding date.waifu2x.net · read 12 Oct 2026

Alternatives to waifu2x

B BigjpgAndroidiPhone & iPad+4 N NextGenUpWebWindows+3 KE Krea EnhanceriPhone & iPadWeb+2 TG Topaz GigapixelAndroidiPhone & iPad+4 RE Real-ESRGANWebWindows+3 S SupaResWebAPI PI PixelPanda Image UpscalerWebBrowser extension+1 AI Adima Image Upscaler ProAndroidWindows

Every alternative, ranked