Make white background transparent

Discuss Pixelmator for iOS and mobile image editing.
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2020-02-20 07:31:10

Hi, I am trying to make the white background in an image transparent. Can Pixelmator for iOS (iPad) do this, if so how?
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2020-02-20 15:41:34

Hey Nigel, the answer is yes! Here's how I'd do this:

1. Choose the Color Selection tool (tap the brush icon > Select > Color Selection)
2. Set the selection mode (in the top-right corner) to "Add to"
3. Drag to select all parts of the white background
4. Tap Done
5. Tap any part of the selected area and choose Delete
6. Tap Deselect

Hope that helps!
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2021-08-05 05:12:45

I think it would be good and intuitive to have this option in "replace color" menu
Image
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2021-08-24 08:46:12

by bohdan 2021-08-05 02:12:45 I think it would be good and intuitive to have this option in "replace color" menu
<p><img src="//support-cdn.pixelmator.com/uploads-new/cuf_1628140345_Screenshot_2021_08_05_at_08.12.11.png" class="postimage is-shown is-visible" alt="Image" width="252" height="164"></p>
Hey bohdan! This is Pixelmator for iOS part of the forum but thanks for the suggestion, regardless! The Replace Color tool in Pixelmator Pro and Pixelmator Photo works by changing the tint of the original color (moving it along the color spectrum). Transparency doesn't really exist in a color spectrum but we could probably think about adding a separate checkbox for it or some other way to 'turn off' color completely. We'll consider it!
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2024-02-05 15:41:56

This solution doesn't completely work, though. The pixels that border the previously white background are still partly white (due to the anti-aliasing features built into all image processing software). What we really need is a way to detect that border and then convert its partial "whiteness" to a transparent alpha channel.