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Questions tagged [image-editing]

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

2
votes
1answer
157 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
votes
1answer
167 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
vote
2answers
36 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 ...
4
votes
1answer
56 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
votes
1answer
51 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/...
0
votes
0answers
15 views

Reduce color richness to reduce file size of an image with Preview.app

In the olden days, I recall using my Mac to reduce the richness of color in an image to reduce its file size and memory usage. I remember switching from millions of colors to thousands of colors. Is ...
0
votes
1answer
30 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
votes
4answers
99 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 ...
1
vote
1answer
58 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 ...
1
vote
0answers
16 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
votes
1answer
40 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
votes
2answers
56 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 ...
8
votes
3answers
985 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?
0
votes
2answers
73 views

How to resize a screenshot image on a Mac so that it is “regular size” when posted on the Internet?

I sometimes take a screenshot on a Mac (OS X Mavericks), by CMD-Shift 4, and resize it to 50% width and height in Preview. But when posted on the Internet (for example, on an online forum or on ibb....
3
votes
2answers
605 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 ...
1
vote
0answers
27 views

ImageMagick: convert [label:] need help

There is a command: /Path_to/convert \ -background LightBlue1 \ -border 10 \ -bordercolor red \ -font Helvetica-Bold-Oblique \ -fill blue \ -pointsize 72 label:"\n`date "+DATE: %Y-%m-%d%nTIME: %H:%M:%...
4
votes
1answer
2k 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 ...
1
vote
1answer
32 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 ...
1
vote
2answers
536 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
votes
0answers
64 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
votes
1answer
582 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
votes
1answer
86 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
vote
0answers
235 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 ...
2
votes
1answer
190 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
vote
1answer
80 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 ...
2
votes
1answer
4k 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
votes
2answers
400 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
votes
1answer
23 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 ...
26
votes
5answers
27k 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
vote
1answer
41 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
votes
1answer
705 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
votes
1answer
1k 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
vote
2answers
312 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
votes
2answers
82 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
votes
2answers
62 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
votes
1answer
5k 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 ...
2
votes
1answer
1k 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 ...
-1
votes
1answer
8k views

Arrange images on a single A4 page for printing? [closed]

I have a number of images I would like to size to something like 3.5"x2.5" and arrange with gaps on A4 or A5 sized paper. Is there some program or utility that can arrange photos for printing like ...
1
vote
0answers
144 views

How do I insert LaTeXiT images in Inkscape without losing the quality of the image?

On a Mac, if one uses Inkscape, one cannot write equations directly (as far as I know). To go around this what I've done is write the equations in LaTeXiT and then import the PDF in Inkscape and then ...
3
votes
1answer
707 views

Preview.app version 7 in macOS Sierra

I have been using the Preview.app that comes with Mavericks until El Capitan. The reason that I have been copying that application instead of using the newer version is that it works better for my ...
2
votes
0answers
433 views

View QTVR files with Google Cardboard

I have a lot of old QuickTime VR cubic panorama images which I want to view with my Google Cardboard, preferably using Google Cardboard iOS app. I think for this I would need some converter, which ...
2
votes
1answer
2k views

What does the “Resample image” option do in Preview?

When using Tools > Adjust Size in Preview, there is an option to Resample image which is checked by default. When it is unchecked, a few things happen: The Fit into option is disabled and set to ...
0
votes
0answers
32 views

How to map different trackpad gestures in a per-application basis?

For instance when using Photoshop together with some other editing tool, when I switch between the apps I mistakenly do the gestures to zoom/pan on the wrong application, so I wonder whether there is ...
5
votes
1answer
9k views

Reduce opacity of existing image

Can Apple's Preview app be used to reduce the opacity of an existing image? I might be asking this wrong. To be clear, I've Googled it extensively but Google seems to think what I want is to remove ...
0
votes
1answer
159 views

Crop animated gifs

Is there any free program to crop animated gifs? With GUI, because ImageMagick can do that pretty easily, but I have quite a few different gifs and preset coordinates for batch cropping is a no go.
0
votes
1answer
2k views

Does iOS's native image editor lose image quality?

I used to use my iPad to crop JPEG's from camera roll, and auto enhance them, etc. It occurred to me that since the photos from iOS's camera app are JPEGs, it would be hard to edit them without ...
2
votes
1answer
361 views

What application can rotate a TIFF without re-encoding it?

This question is inspired by my earlier question: Ask Different: Why does rotating a TIFF in Preview increase the file size? One thing I don't like about the Preview application is that even ...
2
votes
1answer
396 views

Why does rotating a TIFF in Preview increase the file size?

When I use Preview.app to rotate a .TIFF image file 90 degrees, the resulting file is about 10% to 20% larger. All I do is open, rotate, save; there is no exporting or "save as" changes. I've tried ...
-1
votes
1answer
50 views

Add a caption to an image

Need a simple program to add captions to lots of images (Several 1000 - for a hobby website). Some will have the same caption, so copy and paste are a requirement, but may need background colour ...
1
vote
0answers
29 views

In different programs the same size on “Actual” size shown differently, Bug?

Retina-MBP I create new files in Pixelmator and Adobe Illustrator. Both files are of 100x100 pixels size. The resolution in Pixelmator is set 300, the resolution of export raster in Illustrator set ...