Nearest Neighbor, for example, can be used on images with hard edges like line art and diagrams.īilinear and Bicubic are general purpose algorithms. Which one is best will depend on your type of image and whether you are upsampling or downsampling. Each one is an algorithm used to determine where to add or remove pixels. The way Affinity Photo adds the newly created pixels is determined by the interpolation method you choose. When enlarging (upsampling) an image, you are literally adding new pixels.
Resize image without losing quality update#
If the lock aspect ratio box (small padlock icon) is checked, the rest of the image dimension will update automatically. You can also scale your image at the same time. While resampling, you can choose whether to maintain your image’s aspect ratio or not. Upsampling will increase the number of pixels, thus also increasing its overall pixel dimensions and its file size. If you need to enlarge your image by adding more pixels, you will need to resample it instead. The new image size is created without resampling and without creating new pixels or removing them. The DPI changes because Affinity Photo is spacing out the pixels in the image. This will allow you to input a new width or height value. When changing the Units on the drop-down menu, the file size will change and the Size fields will also be enabled. There is a small workaround where you can change your image measurements without resampling. Use a Workaround for Changing Measurement This is because the pixels in the image have been spaced out. Now, if you change the DPI, the image will maintain the same pixel dimensions, but its actual size will change. You will notice that Affinity Photo disables all the options except Units and DPI. If you uncheck the Resample box, you will be able to resize your image without resampling it. We will also show how it affects the resizing of your images. Next, we will explain what happens if you uncheck the Resample box. A lower resolution instead is better suited for online usage. A higher resolution is good for printing but will result in a larger file. When scaling an image, we are changing its resolution or amount of DPI (dots per inch). Now, depending on the results you want to achieve, select the method of image resizing that works better for you. There will be a brief description of your settings at the bottom of the dialog window. You can also change the units (2), the resolution or number of DPI (3), and choose the resample interpolation method (4). There, you can input the new width and/or height of your image (1).
Then, go to Document > Resize Document (Option/Alt + Command/Control + I). You first need to open the image you want to resize in Affinity Photo. We will show you various methods to resize your image. There are pros and cons to each method and its effectiveness will basically depend on your image and the results you want to achieve.įor this example, we will use a white rose photo, but you can choose from our great variety of stock photos.
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