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1
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1answer
25 views

Losslessly change the dpi value of a JPEG on Linux

How can I change the dpi value recorded in a JPEG file without actually touching anything else, nor recompressing the image? Linux compatible solutions are welcome. This 2011 link says we may not ...
2
votes
0answers
48 views

Why can't I change my desktop background to a JPG in LXDE?

I would like to set my desktop background to a JPG wallpaper, but I cannot seem to. I have tried to by right-clicking the desktop and selecting "Desktop Preferences", but even when I select a JPG ...
0
votes
0answers
181 views

Converting .NEF to .JPG

I am trying to convert .NEF files to .JPG and I am using the command: mogrify -format JPG *.NEF this produces mogrify: delegate failed `"ufraw-batch" --silent --create-id=also --out- type=png ...
0
votes
0answers
54 views

display JPEG Exif header with od (Octal Dump)

there are several command line tools to show Exif header of JPEG images. I wish to see the same info with od (octal dump) $ jhead 1430472877538-0.jpg File name : 1430472877538-0.jpg File size ...
0
votes
1answer
60 views

How could I install epeg on Arch Linux?

I've been trying to install epeg on Arch Linux, and I'm not having any success. I tried following the instructions for compiling it on the GitHub site, but I just ended up with a libepeg.so and an ...
0
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1answer
2k views

How to find all JPG files on the file system when .jpg extension is not obligatory ? [duplicate]

First thing I noticed when switched from Windows to Linux was, that Linux has no strict naming convention and no obligatory file name extensions like .bmp, .jpg, .exe etc. Therefore I can not tell by ...
1
vote
1answer
832 views

Rename files based on directory names

How can I rename .jpg files in multiple folders based on the name of the folder? I also want the .jpg files to remain in their respective folders and not moved. The folder names have no spaces. So, ...
4
votes
1answer
696 views

Imagemagick: set IPTC parameters in jpeg image

With the Imagemagick command $ identify -verbose image.jpg so many properties of the image are shown. For example, in the output I can find Profiles: Profile-8bim: 1058 bytes Profile-iptc: 1017 ...
4
votes
2answers
2k views

How to get JPEG thumbnails quickly

My camera is very basic (understatement), but it does have one notable feature: its thumbnail mode is impressively fast; it loads a screenful of 9 thumbnails in less than a quarter of a second. Now, ...
3
votes
1answer
374 views

Need script: latest JPEGs to video, then delete old JPEGs

I have an IP cam which uploads JPEG pictures to an FTP folder on my Arch Linux box whenever it detects movement in the room it is looking in. It uploads a JPEG every second until all motion activity ...
1
vote
1answer
580 views

how to pdfjoin landscape and portrait oriented JPEG images to one PDF file?

I have some JPEG files. Most of them are landscape oriented, but some are portrait oriented. I want to combine them into one big PDF file. I tried pdfjoin but this results in all images beeing ...
0
votes
1answer
238 views

How do Firefox and Chrome render JPEG images on Linux?

I'm having trouble with Firefox and Chrome for some time now and it's very irritating. Neither of these browsers will render JPEG images. Konqueror and Opera are fine though. What libraries I can ...
0
votes
1answer
202 views

Removing all tags from images [duplicate]

Possible Duplicate: Batch delete exif info How can I remove all tags from images under a directory (using Linux)? I can find all files with something like find pictures -type f -iname ...
4
votes
2answers
173 views

mpd/xine like daemon for displaying pictures?

I am looking for a daemon that allows me to programmatically display pictures under X and that listens to commands on a socket or network port. Basically think mpd or xine, just not for audio or ...
2
votes
1answer
1k views

Shell script filtering through jpg files attributes

I'm trying to find a way to filter through thousands of jpg files, and keep only the files with a certain attribute (such as the camera brand with which the picture was captured). How can I do so?
5
votes
6answers
3k views

Stitch two JPEGs together into a PDF

I need to take two 8.5in by 11in JPEG images and merge them together into two pages of a PDF. Is there a commandline or GUI tool to help me do this?
3
votes
2answers
587 views

jpg to pdf without data loss

Trying to make such things: 1st step: convert img.jpg img.pdf 2nd step: pdfimages -j img.pdf img1 Comparing source and extracted images in HEX shows difference. How to make such conversion ...
4
votes
1answer
4k views

Convert a folder of images into a multi-page pdf file using command line tools?

I have a folder with 100 jpg images. I want to convert these images into a multi-page pdf file, with all the images (cropped to A4 size). They are already in the correct rotation. Which tools should ...
2
votes
4answers
1k views

How to generate jpg thumbnails and browsable html pages from command line?

I am searching for a simple command line tool that takes a bunch of jpg files as input, copies them to some destination and generates some browsable html for it (including index page, preview ...