35
votes
Accepted
How do I rotate a lot of digital photos by 180 degrees in one operation?
I would recommend any of the applications from this list at JPEGclub.org, which develops and maintains software for the Independent JPEG Group. They have a free piece of code called ...
- 143k
12
votes
How do I rotate a lot of digital photos by 180 degrees in one operation?
On Windows you can do it without any extra software in TWO operations. Select the files you want rotated in file Explorer, right click and do "rotate right" (or left) twice. It will be done losslessly ...
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10
votes
How do I rotate a lot of digital photos by 180 degrees in one operation?
You could use ImageMagick with the rotate option:
convert image.jpg -rotate 180 result.jpg
You should be able to apply this ...
- 8,544
8
votes
How to batch edit a collection of raw files in Darktable?
A useful feature which I have only just found is the ability to copy and paste with short cut keys as shown here darktable manual. I've spent too long right - clicking all over the interface for a ...
- 1,015
8
votes
Accepted
How to extract all metadata from photos in subdirectories?
Try adding the -r option to the command, which tells exiftool to scan the directories recursively, starting from the top folder ...
- 5,414
7
votes
How can I batch crop based on face location?
Thanks to @Ryan's answer which I adapted 5 years ago, I automated most of my first desk job. It's now the open source package autocrop on PyPI, and can be used from your terminal, or through a Python ...
- 171
6
votes
How do I convert multiple JPG images to PNG at once in Photoshop?
Consider using ImageMagick or GraphicsMagick. A simple
mogrify -format png *.jpg
or, if you like uppercase extensions,
...
6
votes
Open Source way to batch reduce export quality?
For a batch process, nothing is better than ImageMagick. In a terminal:
The very simple mogrify that overwrites the input file
...
- 21.7k
5
votes
How to batch edit a collection of raw files in Darktable?
I think another way of doing this in addition to Kyle's answer is the darktable command line interface. There two main options:
...
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5
votes
How do I rotate a lot of digital photos by 180 degrees in one operation?
You can use xnview on windows, which has some batch mode processings and also, for a simple rotation of images, have the option to rotate images based on the exif data.
Select all the images (even ...
- 328
5
votes
Accepted
Open Source way to batch reduce export quality?
You can use free (but not opensource) software as XnView. Batch convert give you the option to define quality level:
Or you can use free and opensource ImageMagick by convert with set compression/...
- 12.4k
4
votes
How do I rotate a lot of digital photos by 180 degrees in one operation?
Assuming your photos are in JPEG format, I'm quite partial to JPEGCrops, a simple and free tool for lossless batch processing of images.
You can crop to specific aspect ratios, and/or rotate.
- 7,181
4
votes
How do I rotate a lot of digital photos by 180 degrees in one operation?
FSViewer is a useful program that can do that.
Open up the folder where the images are, select all that you want to rotate, hit F4 and go to the 'Batch Convert' tab in the window that opens up. Click ...
- 2,055
4
votes
How do I rotate a lot of digital photos by 180 degrees in one operation?
May I suggest the batch mode of Irfanview, which only runs on Windows. Irfanview is also good for simple edits, but it is no GIMP.
Once installed, select "File | Batch Conversion/Rename". From there ...
4
votes
How do I rotate a lot of digital photos by 180 degrees in one operation?
With windows you can mark all if them in the explorer then right click and choose rotate clockwise. Do this two times and your pictures are now rightly orientated.
- 1,633
4
votes
Accepted
Is it possible to batch export all processed photos in Lightroom?
You can create a smart collection with a "Has adjustments" set to "true" rule.
Then all of the processed photos will be in that collection and you will be able to export them at once.
- 577
4
votes
Accepted
How can I batch edit metadata?
Since you mention files coming from different devices, it would probably be useful to sort files into folders based on the device from which they came.
...
- 27k
4
votes
Accepted
How to apply identical color curves to many pictures in GIMP?
For anyone else wanting to do this I figured it out.
First I got the color curve I wanted, and clicked the plus to "Save the current settings as named preset"
Then next to the plus I pressed Manage ...
- 111
4
votes
Accepted
How to insert a pause in Photoshop batch process?
You can insert a "Stop" action anywhere you want. It doesn't actually stop the batch, but pauses it. See the section "Insert a stop" at Creating actions in Adobe's Photoshop User ...
- 7,181
3
votes
How do I convert multiple JPG images to PNG at once in Photoshop?
Look at the File->Automate and File->Scripts menu options. Perhaps you could create droplet or run image processor, although I don't know if these allow conversion to PNG in particular.
See what ...
- 5,223
3
votes
Is there a tool to compare image EXIF data across folders, so I can eliminate duplicates?
Yes, there is, but you will need to be comfortable with the command line to do it. It will work best if you are in a unix/posix environment. This is available for Windows as an add-on using cygwin.
...
- 1,778
3
votes
Best program to batch compress JPGs with minimal loss?
If you are not afraid of using the command line, ImageMagick is the tool you need. It is the state of the art of image processing and it is widely recognized as THE software for image processing.
In ...
- 143
3
votes
What is the best way to auto crop bulk images?
I made a free tool that does this, it automatically detects photos against the scanner bed whitespace. You can make multiple crops on each photo, with no compression.
Currently you can upload 3 images ...
- 51
3
votes
How can I convert RAW files with proper distortion correction from the command-line?
I think you might be best served by being patient — you say that the Lensfun database is old, but it's actually a current, ongoing project, with (as of this writing, of course) new lens information ...
- 143k
3
votes
Accepted
How to make a JPG files DCF compatible? (command line)
Finally, with lots of help on the Internet, including the suggestion by @StarGeek, I got it to work. The required tools are:
ExifTool
ImageMagick
You also need a photo taken with the camera, here:
<...
- 549
3
votes
Bulk auto NEF → TIFF in RawTherapee?
The short answer is no, at least not entirely. But Nikons free NX Studio software will do it quite easily. AFAIK, it is the only software that recognizes and applies every jpeg camera setting to the ...
- 18.8k
2
votes
What is the best way to auto crop bulk images?
Scanning books or their dust jackets? I imagine the scanner lid won't close properly with a book under it, in most types of scanners. One option: Photograph the books with a DSLR or other digital ...
- 129
2
votes
How can I easily convert a large number of pictures from RAW to scaled down JPG?
On OSX, there is a fast, free and easy option. Go into terminal and navigate to the folder containing your RAW photos. For Nikon NEF images, run this command:
...
- 121
2
votes
How to delete JPG files, but only if the matching RAW file exists?
I like the bash script for OS X (by T.Toivonen), but I have noticed there are a few issues.
It did not like my directory names, which contain spaces. That required a bit different handling of the ...
- 21
2
votes
Is there a tool to check the file integrity of a series of images?
I developed check_media_integrity a simple python script check_mi.py, you can download it from GitHub:
https://github.com/ftarlao/check-media-integrity
I quote ...
- 121
Only top scored, non community-wiki answers of a minimum length are eligible