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Questions tagged [jpeg]

JPEG or jpg is a popular image file format.

71 questions
455
votes
10 answers

Convert a directory of JPEG files to a single PDF document

I have many JPEG files in a directory, and I want to convert them to PDF and concatenate them together to make a single document. How can this be done? I would prefer using the command line, as this process will be faster.
lovespeed
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131
votes
5 answers

How can I read and remove meta (exif) data from my photos using the command line?

Just looked this up. Figure I'd share it here for future reference.
klenwell
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67
votes
2 answers

imagemagick - convert not allowed

I have multiple *.jpeg pictures I like to merge into a single *.pdf file like so: convert Blatt1.jpg Blatt2.jpg Blatt3.jpg Blatt4.jpg out.pdf I am prompted with the following exception: convert: attempt to perform an operation not allowed by the…
n00b.exe
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50
votes
13 answers

How to convert CR2 to JPG or PNG?

I need to convert a lot of CR2 photos to either JPG or PNG, no editing. How to do this?
user284848
  • 521
25
votes
4 answers

GIMP 2.8 doesn't allow to save usual image file formats (jpg, png) via Save dialog

I used to save images as usual image file formats (jpg, png) by pressing Ctrl+S or Ctrl+Shift+S (Save or Save As dialog). Now in version 2.8 GIMP doesn't allow it anymore: you can Save only as .xcf but to save as .jpg or .png you must Export. Is…
Nickolai Leschov
  • 8,400
20
votes
2 answers

Convert PDF to image

I'm trying to convert a PDF file (it's a book) into an image. When I using convert like this convert book.pdf book.jpg or like this convert book.pdf book.png then I get this warning Warning: Short look-up table in the Indexed color space was…
Ubuntu-Guy
  • 201
15
votes
8 answers

How to add support for the JPEG image format

After installing Imagemagick, I've tested it with jpg image, like this: identify 1.jpg But, I got this result: identify: no decode delegate for this image format `1.jpg' @ error/constitute.c/ReadImage/550. Then, I tried to add support for JPEG…
Samir Sabri
  • 836
11
votes
2 answers

Can't open .jpg files extracted from an .iso, what to do?

Recently, I extracted some pictures from an .iso file, but I can't see them. When I try to open these .jpg files with Image Viewer, it shows me this error: Error interpreting JPEG image file (Not a JPEG file: starts with 0xda) (the expression…
Julien Shepherd
  • 327
9
votes
3 answers

Converting image to Jpeg2000 does not work

I try to convert an image to Jpeg2000: convert example2.png -quality 95 example.jp2 But the output is still png: file example.jp2 example.jp2: PNG image data, 2549 x 3507, 8-bit/color RGB, non-interlaced What am I doing wrong? convert…
guettli
  • 1,765
8
votes
2 answers

Avoid "save for web" in Gimp

Previously Gimp could directly open and save JPEG and PNG-images. Since Ubuntu 12.10 Gimp is upgraded and requires me to save via a "save for web"-dialog. I have several issues with this dialog and consider it a severe regression: It does not open…
berkes
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7
votes
2 answers

How to save .jpg NOT .JPG

When uploading photos from my iPhone to use for eBay they are automatically saved as .JPG (all caps). However eBay only recognizes .jpg. So I have to manually go back in and rename all the files with the lowercase .jpg. Is there anyway to have them…
Nick Hrbolich
  • 71
6
votes
2 answers

How to troubleshoot photo import failure with Shotwell?

I can't get Shotwell to import my photos. They are all normal JPEG files from digital cameras, about ten thousand in total. How to I continue troubleshooting this, and get all my photos back into Shotwell? I exported them from within Shotwell to a…
Tom Brossman
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6
votes
2 answers

Which apps support to open and convert JPEG XL (.jxl) pictures?

JPEG XL (.jxl) is the next-generation, general-purpose image compression codec by the JPEG committee (more info you can find on jpegxl.info). Which apps/programs can open and convert it?
Filbuntu
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5
votes
1 answer

PDF to Single, Continuous JPG

I'm looking for a way to convert a PDF to a single, continuous JPG. I've tried: convert source.pdf output.jpg But I get all separate pages, eg: output-1.jpg output-2.jpg output-3.jpg ... Is there something I'm missing, so that all my pages will…
unknown6708
  • 121
5
votes
1 answer

Ubuntu 16.04 LTS does not display .jpg files

I have a series of .jpg files that do not show on Ubuntu Image Viewer or as thumbnails. These are perfectly ok on Windows 32 and 64 and on Mac OS. Strangely one very old .jpg file does display correctly and its thumbnail is visible in Files no…
collectordave
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