Questions tagged [image-editing]

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

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12 views

How to reduce file size of multiple pictures in Photos app?

I have some pictures in Photos that I simply don't need in the maximum quality my phone camera took them in. They're usually about 2-4MB when ~200KB would suffice. I am looking for the best way to ...
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1answer
17 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 ...
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0answers
12 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 ...
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1answer
140 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 ...
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1answer
51 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 ...
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1answer
34 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
69 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.
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1answer
815 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
36 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
15 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
44 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 ...
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1answer
45 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 ...
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2answers
273 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 ...
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0answers
12 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 ...
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0answers
450 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, ...
3
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1answer
2k 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.
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1answer
899 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....
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3answers
344 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
75 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 ...
2
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1answer
2k 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/...
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1answer
84 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 ...
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5answers
1k 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 ...
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1answer
307 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
23 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
338 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 ...
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2answers
60 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 ...
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3answers
2k 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
818 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 ...
4
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2answers
3k 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 ...
5
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1answer
5k views

how can I undo a picture I accidentally edited in preview?

The was a picture that I was looking at in my computer, I drew a line with the preview tool, my computer became really slow and it didn't let me do anything so I just force quited Preview. after I ...
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1answer
48 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 ...
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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 ...
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0answers
148 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
857 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
219 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 ...
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0answers
344 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
920 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 ...
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1answer
90 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
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1answer
7k 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
781 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 ...
0
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1answer
43 views

Shrink all images in pages document

I have a huge (filesize) pages document, which I suspect is due to all the images in it. The images were copied from elsewhere and pasted in. A lot of the images are original resolutions of 1080 ...
42
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6answers
40k views

How to convert a HEIF/HEIC image to JPEG in El Capitan?

So, here’s the thing. I have a new iPhone and an old Mac. iOS 11 (still in beta as of today) and El Capitan (no more updates for this Mac). I use iCloud photo library in both devices. When I take a ...
1
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1answer
58 views

Breaking pdf to various images, compress, and recombine

I want to save each page of a PDF file as separate image, compress them, and recombine back as PDF. Some PDF files I often use are strangely large in size. I mean, some 100 pages but some 200M. I ...
2
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1answer
985 views

Smart cropping of images and add border

I need to perform batch cropping to approximately 3000 images. Each image is for a different item. What I need is a crop tool that can define the item from the background and add specific amount of ...
4
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2answers
2k views

join multiple png images

Often I find myself needing to take many PNG images and join them into a larger image. Specifically, in this particular case, I'd like to take 2 PNGs of roughly equal width (±2px) and different ...
1
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2answers
391 views

An image editor with an API (preferably python-oriented)

Is there an image editor for OS X (e.g. Preview) that can be operated programmatically, preferably with python, or that has a built-in programming language, like MS Word has VBA built-in (at least on ...
2
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2answers
222 views

Simple image-editing program to add shapes/text to an image that are still editable after saving?

If I add text boxes and shapes to an image using Preview.app, save that image, and then close the image window, the next time that I open the image in Preview, all additions are uneditable. Preview ...
2
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2answers
330 views

After the image has been saved, can I still edit text-boxes & shapes in Preview.app?

If I add text boxes and shapes to an image using Preview.app, save that image, and then close the image window, the next time that I open the image in Preview, all additions are uneditable. In other ...
6
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1answer
8k views

Rotate Selection in Preview

I am doing something I thought would be pretty easy, but apparently I was wrong. I am wanting to edit blueprints for my sister-in-law's new bathroom redesign. I have made selections to the PNG ...
4
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1answer
3k views

Disable shape detection in Preview's annotation tools

When I try to draw a line on an image using Preview's annotation tools, it doesn't remain as I drew it but instead the line is drawn linear. How can I set it to be preset as nonlinear? So looking to ...