Waifu2x: AI Photo Upscaler HD

Unblur and upscale photos and anime art 2x–4x with on-device AI. 100% free, no ads, no limits. Every image is processed on your device, so it works offline and nothing is ever uploaded.

■ Completely free – no ads, no in-app purchases
Every feature is available with no limits.

■ AI picks the best model for you
Just choose an image. The AI tells illustrations from photos and enhances each with the model that suits it best.

■ Four AI models
• waifu2x – the classic upscaler for illustrations and anime
• Real-ESRGAN Anime – high-quality 4x upscaling with AI detail completion
• Real-ESRGAN Photo (Light) – fast 4x upscaling for photos
• Real-ESRGAN Photo (High Quality) – the best 4x quality for photos

■ Not happy? Try another model
From the result screen, switch to another model in one tap and process the same image again.

■ Batch processing
Select and process up to 20 images at once, with a progress bar to follow along.

■ Before/After comparison
Compare the original and the result with a slider or a toggle button.

■ Easy saving and sharing
Save to Photos as PNG or JPEG and adjust the JPEG quality. Share results in one tap.

■ History
Look back at images you processed before, then save or share them again.

■ Light & dark mode
The app follows your device setting, or you can choose one in the app.

■ Privacy first
All images are processed on your device. Nothing is uploaded to a server or used to train AI.

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The app icon uses an illustration by Rio Hazuki, purchased here:
https://irorio.booth.pm/items/3909028

The following free assets are used in the screenshots and elsewhere:

Business free illustrations by Ranland
https://web-sozai.com/lists/list5/

Pattern assets for designers
https://www.pattern-sozai.website/data/

Irasutoya
https://www.irasutoya.com/2016/04/blog-post_204.html