Press & facts

ClarityUp 4K is a free online image upscaler and enhancer that enlarges photos up to 4K. It offers traditional Lanczos and bicubic resampling plus an optional Real-ESRGAN AI mode, all running inside the visitor's own browser.

Key facts

• ClarityUp 4K processes every image locally in your browser using WebGPU — no file is ever uploaded to a server.
• There is no account, no email, no credit limit, and no watermark.
• The Real-ESRGAN model (~17MB) is cached in IndexedDB after first load for faster repeat use.

Using this content

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