Questions tagged [image-editing]

tag for image manipulation programs that allows the user to edit an image

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2answers
45 views

Does redacting images in Preview using opaque shapes remove the original data from the resulting image file?

The Preview application has a Markup toolbar, which allows drawing over the top of an image. I was thinking about the possibility of using this feature to draw opaque shapes to redact sensitive ...
0
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2answers
38 views

How do I save a black & white picture to a 1-bit image file?

I need a 1-bit image file to print on a laser engraver. I used to have quite a few graphics applications that could save 1-bit black & white TIFF files. I've owned Macs since 1987. However most of ...
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1answer
30 views

How do you use the open verb in Image Events using AppleScript?

According to the dictionary for Image Events, the open verb is supposed to return a document object. This is also how it's used in multiple online examples. However, when I try to use it, the script ...
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1answer
456 views

How to adjust vertical & horizontal perspective for photos on Mac OS (like on iOS)?

In Apple's Photo app on my iPhone, I can straighten and adjust vertical & horizontal perspective for photos as shown in my image below and also described on this page. But in Apple's Photo app on ...
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7answers
3k views

Good alternative to Adobe Photoshop

Adobe products have always been the bane of my Mac existence, and lately they seem to have gotten even worse (notably running multiple processes in the background constantly accessing my keychain and ...
1
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1answer
25 views

Can a Mac app set the desktop image?

Been googling this and can't find anything. Can an app set the Mac Desktop image? Like you create a fun cute image in the app, then it asks you 'Do you want to set this as your desktop image?' If you ...
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0answers
33 views

How do I display an image at a particular size (in mm)?

I’m trying to use my iPhone as a light source and a digital negative to make analog prints. For example, the Paper Exposer app generates a light source that when placed behind a 35mm strip of film and ...
1
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1answer
24 views

In Preview, what properties are the top three level sliders?

What am I actually adjusting when I move around these three sliders in the "Adjust Color" setting?
0
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2answers
30 views

What is the native program OSX load to edit the screenshots?

When creating a screenshot with Cmd+Shift+3 or Cmd+Shift+4, a smaller version of the screenshot image appears at the corner of the screen. When clicking the image, the full-sized screenshot image pop ...
0
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1answer
519 views

Adjust the opacity/transparency of an image on Mac OS Big Sur

I thought i'd be able to do this with the built-in Preview app, but I can't find a way to do that. I have an image i'd like to reduce the opacity to 50%. Can anyone advise if there's a way to do this ...
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0answers
24 views

Does Preview do something when copying bitmaps?

I had a jpg with text where I needed to exchange two words. My plan was to just copy the two words, apply a white rectangle on top of the original words to "erase" them and then paste the ...
0
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1answer
45 views

Live preview of changing image file

I'm looking for a software recommendation that will allow me to view an image file that changes frequently, that ideally updates the display within 1 second after the file changes on disk. Why? I'm ...
1
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0answers
137 views

How to export multi page pdf into multi page JPEG in preview?

I have a pdf document with 5 pages. I would like to export it in JPEG format (or any image format). But if I hit File->export->export as JPEG, it only saves the first page of the pdf document as a ...
4
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1answer
519 views

Very large (out of core) image viewer for Mac?

(Yes, I've seen this question, but what that poster considered "truly massive" is pretty ordinary now.) Can anyone suggest an image viewer on the Mac, OSS or commercial, that is capable of ...
0
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1answer
764 views

Invert color in Preview

I used command+option+control+8 to invert the colors on an image. When I open the image in Preview then try to print it, the image does not print with the colors inverted. Is there another way for ...
1
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1answer
51 views

I need to swap a colour with transparency

I have an image and I would like to be able to make white transparent, is this possible using Preview in Mac OSX Catalina?
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1answer
73 views

Inkscape like tool in Mac with latex rendering capabilities

I'm looking for some Inkscape "like" application for MacOS where you can insert latex text/symbols and modify your figures to some extent. Inkscape with Xquartz is not working out for me.
0
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1answer
3k views

How to change text transparency in the Mac preview?

This text is the watermark I want to add. Just wondering how to change its transparency.
3
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1answer
71 views

Proper save format for preview for editable pictures

Suppose you edit a picture in Preview and added new elements such as text. In what format should you save the file if you want to resume editing the added elements, like changing the font of the text ...
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0answers
16 views

Saved images from Photoshop do not show up in folders until restart

I have a problem saving images from Photoshop CC. I usually shoot Camera Raw images, edit them and save them as JPEGs. Photoshop seems to save images normally - it takes about 2 seconds to complete ...
3
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2answers
203 views

Why does macOS Preview show different sizes before/after resize?

An image saved locally on my MacBook Pro (macOS Mojave 10.14.3) has a size of 4.4 MB, as you can see in the screenshot below: 4.4 MB is the original size of the image, which has a resolution of ...
1
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1answer
128 views

OSX Software to use for Photo Collage in a large poster size

I need a very large poster of pictures of kids collage. Here is a sample I'm not a graphic designer and so I'm not necessarily very familiar with the Vector design tools that people often use to ...
0
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3answers
598 views

Android JPG images not opening in Photoshop

I have problems opening JPG files sent by Android smartphones. In Photoshop it says that i's impossibile to open the image since it lacks SOFn, DQT or DHT marker before JPEG SOS marker. In Lightroom ...
2
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1answer
79 views

Generating a mask png from a color image?

Apple requires certain icons to be monochrome masks with transparency in png file format. How (on macOS, using a built-in app, such as Preview, or an app in the App store, such as Pixelmator) can I ...
7
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1answer
933 views

Disable auto-save in Preview (only Preview): Mojave edition

This has been asked before, on earlier OS versions, but doesn't seem to have gained satisfactory answers. I'm looking for a way to disable auto-save in Preview (only). Background: In OS X Lion, ...
6
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1answer
6k views

How to invert colors of a picture on Mac?

How do I invert the colors of an image? I'm using macOS 10.13 and I wish to use built-in Apple software or freeware.
2
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1answer
2k views

How can I preview an image in its original size?

I have 2 images in a directory and I see from the Get Info that one has Dimensions: 532 × 1051 and size 45KB on disk. The other based on the Get Info has Dimensions: 1440 × 2900 and size 379KB on disk....
1
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3answers
533 views

How do I disable Mojave's Finder quick actions for images?

I have a few folders with a large number of images that I typically sort by modification date. Sometimes I'll accidentally trigger one of Mojave's new Quick Actions, such as rotating the image. This ...
3
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1answer
389 views

How can I center a PNG with a transparent background using the CLI?

I'd like to come up with a technique for properly posting images on this site on my Macbook using a CLI tool to do the conversion. This is a sample image that I'd like to make it so that the image is ...
5
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1answer
10k views

Can I use Preview to make this GIF file size smaller?

Here is a 2.6 MB GIF that I would like to post in a Stack Exchange question. That means it needs to be under 2 MB or 2 MiB (I can't remember which). https://techcrunch.com/wp-content/uploads/2019/02/...
1
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1answer
1k views

Annotation/Highlight doesn't work in Apple Preview

I have a screenshot. I want to highlight some parts of it. The highlight icon is disabled; the Tools > Annotate > Highlight Text is greyed out. Why? And how can I highlight easily on my ...
0
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6answers
5k views

How to merge multiple image files into one pdf file with page and its original size for every image?

I have some images and I need to print it to ONE pdf file with size of pages as size of its images. How can I do that? In other words I would like to achieve sth like this: Read rectangle is a pdf ...
2
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1answer
748 views

How can I save a bmp (bitmap) image file at 16bpp?

I need to save an image as Windows Bitmap BMP A1R5G5B5 16bpp. Source files are 32bpp image files (PNG and/or Windows Bitmap). Preview saves bmp images at 32 bits per pixel (bpp). XnConvert saves bmp ...
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0answers
30 views

Looking for a very simple image viewer for usage of viewing graphic design previews

Ive been looking for a program, that I can use to preview design outputs. On windows Photofiltre used to do it all very fast, but sadly it is for windows only. So Im looking for very simple (fast) UI,...
2
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1answer
1k views

Creating New Images in Preview

It seems to me that the macOS Preview app's purpose is to edit existing images. I'm wondering if it's possible to create new images from scratch. For example, I would like to create an illustration ...
2
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2answers
69 views

Update Photo on iOS

I would like to update a photo (Photo A) with another (Photo B). The result should be that Photo A looks like Photo B, but can be reverted back to Photo A. Is there an extension that will let me do ...
12
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3answers
4k views

How can I obfuscate a small section of a image on macOS?

How can I obfuscate a small section of an image on macOS? I would like to obfuscate private information in an image before I share it. Is there a way to do it on macOS?
2
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2answers
4k views

How to resize a screenshot image on a Mac so that it is "regular size" when posted on the Internet? [duplicate]

Short question: why if I do screenshot on a Mac and crop it, and see it using Preview, it is a good size but when posted to Internet, such as StackOverflow, its width and height always double? I can ...
5
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2answers
6k views

What is the purpose of an AAE file?

First, some background: For those of you who edit photos using Apple software, you may have encountered AAE sidecar files, which are generated automatically by the Photos app (for iOS or macOS) when ...
10
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2answers
9k views

How can I undo changes made to a picture I accidentally saved via preview?

The was a picture that I was looking at in my computer, I drew a line with the preview tool. Since my was slow and the app was not responsive, I force quited Preview. I opened the document and it ...
1
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1answer
79 views

MacOS Photos App: Resizing a Photo

I am trying to get used to the Photos App on MacOS, but there’s one thing I can’t find, either in the Help or in all of my web searches. How can I resize an image? By that I mean scale it down. I can ...
2
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3answers
1k views

Why does the contrast change when you zoom out of an image on Preview on mac?

If you click on an image file in finder on the mac and press the space bar, Preview will preview the photo for you. After doing this, you can zoom in on the image (by pinching two fingers apart from ...
0
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0answers
560 views

How can I cut and paste one part of a photo on top of another in iOS?

I have two versions of the same image. One has some text on it (three lines of text), and the other is the original with no text. I want to remove the bottom line of text. To do this, I cut and ...
2
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1answer
1k views

Safari showing border of transparent PNG

A website I work on has a partly transparent png image overlying parts of the website. The image is resized to 100% of the browser window width. In all other browsers the transparent parts behave ...
2
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1answer
366 views

Is it possible to control dimensions of cropping an image?

I'm looking for a tool that can help reshape images to specific dimensions, but I'm not sure if there's a term easy to search for tools that support that. Preview can resize images to specific ...
1
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0answers
503 views

macOS Photos.app: How to save photos with adjustments to Finder?

Q: In Photos.app I have stored images with adjustments. How can I back them up non-destructively to the Finder? The adjustments were applied exclusively with the built-in Photos.app in iOS 10 and iOS ...
3
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2answers
2k views

How do I delete photos from Apple Photos retaining only those marked as favorite?

This should be a fairly easy task to carry out, but I cannot seem to figure out a straightforward way of deleting all but favorite photos from the Apple photos app. One workaround is for me to create ...
1
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1answer
98 views

Photo library app recommendation

With the new Photos in macOS High Sierra, Apple restored some of the former iPhoto/Aperture functionality (always-on sidebar, improved auto-organization [into moments, still no user-defined events ...
3
votes
1answer
11k views

Cropping tool for 4:3 or 16:9 images with Preview.app?

Is there some trick to allow me to crop a screen shot in Apple's Preview.app to 4:3 or 16:9 dimensions? I did notice holding down shift causes a 1:1 rectangular selection, but I need other common ...
4
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2answers
1k views

How to crop-rotate video

How can I crop rotate a video, so that it crops and rotates at the same time. I know that there is an option for this in Photos.app, but it only works for photos. Is there some other application that ...