Do I need an account to use this tool?

No, this tool is completely free and requires no account registration. You can use it immediately.

Is there a limit to how many times I can use it?

No, there are no usage limits. You can use it as many times as you want without any restrictions.

Is my data stored or shared?

No, this tool runs entirely in your browser. Your data is never stored on our servers or shared with third parties.

AI Image Upscaler

Upscale your images with high quality using Lanczos resampling and unsharp mask sharpening for crisp results.

Upload Image

🖼️

Drag or click to upload image

JPG, PNG, WebP

How to Use

1. Upload Image

Click the upload area or drag an image to upload. Supports JPG, PNG, and WebP formats.

2. Select Settings

Choose scale factor (2x, 4x) and quality preset. Best quality takes longer but provides the sharpest results.

3. Start Upscaling

Click "Start Upscaling" to begin processing. Progress bar shows the current status.

4. Compare and Download

Drag the slider to compare original and upscaled images. Download if satisfied with the result.

Frequently Asked Questions

What is the difference between quality settings?

Fast Processing uses Bilinear interpolation for speed but may be slightly blurry. High Quality uses Lanczos resampling for sharper results. Best Quality applies Lanczos + unsharp mask sharpening for the crispest output but takes the longest time.

What is the maximum image size?

Due to browser memory limits, we recommend images under 20MB. Very large images may slow down your browser when upscaling 4x, so try 2x first.

Does this include AI features?

This tool uses traditional upscaling with Canvas API and mathematical interpolation (Lanczos). No machine learning AI is used, but Lanczos algorithm provides excellent quality.

When should I use this?

Useful for enlarging low-resolution images for printing, scaling up thumbnails for websites, or restoring old photos. Note that very blurry originals will have limited improvement.

Why does processing take so long?

Lanczos resampling and sharpening calculate each pixel precisely, so time depends on image size and quality settings. 4x upscaling increases pixel count by 16x, requiring more time.

Notice

Upscaling increases resolution but does not add details that were not in the original.
Very large images (4000px+) may slow down processing depending on browser performance.
All processing is done locally in your browser and images are not uploaded to any server.

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