You find a picture that is too small for the use you have in mind. It may be a logo for a poster, a profile photo or a scanned picture. You can enlarge it, but it helps to know what to expect.
The honest truth about enlarging
A picture is a grid of pixels. When you make it bigger, the software has to invent new pixels between the old ones. Good resizing makes the new ones blend smoothly, so edges look clean instead of blocky. It cannot bring back detail that was never recorded.
This tool uses smooth resizing with gentle sharpening. It does not use AI to invent detail, so very small images stay soft. That is true of any simple upscaler, and it is better to know up front.
Steps
- Open the Image Upscaler.
- Add your image.
- Choose 2x, 3x or 4x.
- Download the larger image.
It runs on your device, so nothing is uploaded.
Which scale to choose
- 2x gives the best results for most pictures.
- 3x and 4x work for graphics and simple images, but photos get softer.
- Start with the smallest scale that meets your need. You can always try a larger one.
Good candidates for enlarging
- Logos and simple graphics with clear edges.
- Screenshots that you need to show on a bigger screen.
- Photos that need to be only a little larger.
Poor candidates
- Heavily compressed pictures with visible blocks. Enlarging makes the blocks bigger.
- Tiny thumbnails. There is not enough information to work with.
- Faces and fine text in blurry photos.
Better habits
If you can, go back to the original. A larger source file beats any upscaling. Many apps and websites keep the full-size version, and a phone camera photo is usually much larger than the copy sent by chat apps.
Resize vs enlarge
If you need exact dimensions, such as pixels or centimetres for a form or print, use the Resize Image tool. Enlarging with a scale factor is for when you just want it bigger.
Watch the file size
Larger images mean larger files. If you need to upload the result to a form with a limit, compress it afterwards with the Compress Image tool.
Printing
Enlarged images can look fine on a screen but soft in print. Print a small test first before you order a large poster.