Image Upscaler
Enlarges images in the browser with sharpening controls. It is a practical resize-up tool, not an AI reconstruction engine.
Runs in your browser. The file and result are not sent to Utilio servers.
Image Upscaler
Live preview. Files stay on this device.
Settings
What Image Upscaler does
Use Image Upscaler when you need to create a larger preview image when the source is slightly too small.
When to use it
- Create a larger preview image when the source is slightly too small.
- Prepare screenshots or simple graphics for slides and documentation.
- Upscale assets before light sharpening and export.
How to use it
- Add the image and choose the scale factor.
- Adjust sharpening carefully while watching edges and noise.
- Export and compare the enlarged result at the size where it will be shown.
What to check
- Upscaling cannot recover details that are not in the source.
- Avoid strong sharpening on faces, gradients, and compressed photos.
Data, formats, and limits
What stays on your device and what is sent
Runs in your browser. The file and result are not sent to Utilio servers.
Supported formats
Supported: PNG, JPG, JPEG, WebP, AVIF. Not supported: HEIC, HEIF, TIFF, BMP, SVG, PDF.
File limits and browser requirements
- Up to 40 MB per image
- Image decoding depends on the browser; some formats or color profiles may not open on every device.
- Very large pixel dimensions can exceed browser canvas or memory limits even when the file size is below the limit.
Known limits
- Image decoding depends on the browser; some formats or color profiles may not open on every device.
- Very large pixel dimensions can exceed browser canvas or memory limits even when the file size is below the limit.
Troubleshooting
- If the image does not load, check the file format and try opening it directly in the browser.
- If processing stalls on a phone or older laptop, reduce the image resolution and try again.
- If the result looks soft or too large, adjust quality, dimensions, or output format.
Common questions
What does Utilio receive?
Runs in your browser. The file and result are not sent to Utilio servers.
What is it useful for?
Use it when you need to create a larger preview image when the source is slightly too small. Start by adding the image and choose the scale factor.
Do I need an account?
No. You can use this tool without creating an account.
Can I use it on a phone?
Yes. For large files, complex previews, or careful review, a browser on a computer is usually more comfortable.
How do I get a reliable result?
Add the image and choose the scale factor. Then adjust sharpening carefully while watching edges and noise. Upscaling cannot recover details that are not in the source.
Which formats are supported?
Image Upscaler supports PNG, JPG, JPEG, WebP, AVIF. It does not support HEIC, HEIF, TIFF, BMP, SVG, PDF.
What file size works best?
Up to 40 MB per image. Browser memory and device speed can still affect large files.
Why did I not get the result I expected?
Image decoding depends on the browser; some formats or color profiles may not open on every device. If the result still looks wrong, try a smaller or simpler input and review the output before using it.
Does Utilio use my input or results to train AI?
No. Utilio does not use files, pasted text, settings, generated values, or results from this tool to train AI models.