Image-Upscaling.net
verifiedFreeimage-upscaling.net
Free, donation-funded AI image upscaler (up to 16K) with no signup and multiple quality models.
What it does
Image-upscaling.net is a free, donation-funded AI upscaler that enlarges images up to 4x (and outputs up to 16K on some models). It offers Diffuser, Plus and General models, preserves transparency, and processes without requiring an account.
How to use: To use the website, upload an image from your device (up to 16MPx). For 3x/4x upscaling, images up to 2Mpx are recommended for the premium model, and for 1x/2x, images up to 8Mpx. The server will process the image, which may take a while. Return to the site later to download the upscaled image. Images are deleted a few hours after processing.
Core features
AI upscaling 2x/4x with multiple models
Outputs up to 256MP (16K) on the General model
Face restoration option
Transparent-image and batch support
No sign-up, daily free quota
Images auto-deleted after processing
Best for
→Upscaling art, drawings and anime
→Restoring low-resolution or blurry photos
→Enlarging images while preserving detail
Toolspool rankingby monthly traffic
Tutorials
Step-by-step: exactly how to get things done with it.