Image upscaler help

Image Upscaler enlarges a still image locally in your browser, with 2x, 3x, 4x, and linked custom dimensions plus JPEG, PNG, and WebP download options.

Interpolation-Based Upscaling

The tool uses high-quality browser-local resizing with sharpening controls under the hood. It can create a larger copy with smoother edges than basic scaling, but it does not invent missing detail like AI restoration or face reconstruction tools.

Supported File Types

Use JPG, PNG, WebP, or BMP input. Same as original keeps PNG, JPEG, or WebP when browser export supports the original format. BMP input downloads as PNG because browser Canvas export does not create BMP output.

Local Processing And Privacy

PixTools does not require an account and does not upload selected files to a PixTools server for upscaling. The preview and download are created locally by your browser.

Scale Choices And Custom Dimensions

Choose 2x, 3x, or 4x for quick enlargement. Custom width and height stay linked to the original aspect ratio so the image is enlarged without cropping or stretching.

Large Files And Browser Memory

Larger source images and 4x results can require a lot of memory because the browser must hold large canvas surfaces while rendering. If the preview becomes slow, try a smaller source image or a lower scale.

Downloads And Quality

Download uses the current preview settings. JPEG and WebP exports can use the quality slider; PNG output keeps lossless image data and does not use the quality percentage.

Troubleshooting

If rendering fails, try PNG or JPEG input, use 2x instead of 4x, choose a smaller image, refresh the page, or use a current version of Chrome, Edge, Firefox, or Safari.

Related Tools

Use Image Resizer to shrink or compress images, Image Converter to change the final format, or Background Remover when the subject needs a transparent cutout.

FAQ

Is this an AI image enhancer?

No. Image Upscaler uses interpolation-based resizing and sharpening. It does not recreate missing detail like an AI restoration model.

Which formats are supported?

The tool supports JPG, PNG, WebP, and BMP input. Same as original keeps PNG, JPEG, or WebP when possible, while BMP downloads as PNG.

Can very large images be slow?

Yes. Large images and 4x outputs can use substantial memory, process slowly, or make the browser less responsive.

Can I report an upscaling problem?

Yes. Send the browser, input format, scale settings, and what happened through the contact page. Do not send private images unless you are comfortable sharing them. For image handling details, read the privacy page.