What is the maximum I can upscale a low resolution image by?

The tool supports 2x, 4x, and 8x scale factors. Very large source images are capped at 8x to keep the server responsive, and a clear message appears if an image is too big for the scale picked.

Low Res to High Res Photo Upscaler

Step 1 Upload & configure

Direction

Source file ＋ Drop a file here, or click to choose one No file selected · JPG / JPEG / PNG / PDF supported · Max 10MB

Converts using a standard color-separation formula and embeds a print CMYK ICC profile. After processing you'll move to a download step with JPG, JPEG, and PDF options.

Step 2 Preview & download

Source

Preview appears here

Output

Waiting to process

Download as

Step 1 Upload & configure

Scale factor

Repair detail after upscaling (sharpen edges & texture)

Source file ＋ Drop a file here, or click to choose one No file selected · JPG / JPEG / PNG / PDF supported · Max 10MB

Uses high-quality Lanczos resampling plus a scale-proportional sharpening pass. After processing you'll move to a download step with JPG, JPEG, PNG, and PDF options.

Step 2 Preview & download

Source

Preview appears here

Output

Waiting to process

Download as

Turn low resolution photos into high resolution images

Going from low res to high res used to mean either blurry, blocky enlargements or expensive desktop software. This tool upscales low resolution photos to high resolution on the server, using high-quality Lanczos resampling plus a scale-proportional sharpening pass to repair edges and texture along the way.

When low res to high res upscaling helps most

This kind of photo upscaling works best on images that are genuinely low resolution but reasonably clear — old family photos, scanned prints, small product shots, or screenshots that need to go into a bigger layout. It sharpens and cleanly enlarges existing detail rather than inventing information that was never captured, so extremely blurry or heavily compressed source images will still show their original softness, just at a larger size.

Frequently asked questions

What's the maximum I can upscale a low resolution image by?

The tool supports 2x, 4x, and 8x scale factors. Very large source images are capped at 8x to keep the server responsive — you'll see a clear message if your image is too big for the scale you picked.

Will upscaling from low res to high res make my photo blurry?

High-quality Lanczos resampling avoids the blocky look of basic resizing, and the sharpening pass afterwards is scaled to the upscale factor so the effect stays visible even at 8x.

Can I upscale a PDF from low resolution to high resolution?

Yes — each page of the PDF is upscaled individually, and downloading as PDF keeps every page. Downloading as JPG, JPEG, or PNG only exports the first page.