0
votes
1answer
19 views

Bulk resize / compress TIFF files [closed]

We support and host an EMR for several medical practices; these practices scan images into this software stored as flat files (TIFF mostly). Due to poor user training (people scanning text pages as ...
0
votes
4answers
41 views

How to batch compress images with Imagemagick or similar command or program in Linux

I recently learned about the convert command from imagemagick which I have used to compress many pictures that I have for personal use, and for a blog that I have. In my experience, Imagemagick is the ...
0
votes
3answers
136 views

How big is an 800x600 image file in PNG? [closed]

How big is an 800x600 image file supposed to be in PNG ? Actually what I would really like is a table that shows resolutions on the y-axis and formats/compression type on the x-axis. I ask this ...
0
votes
1answer
49 views

Push format of image while paste from clipboard

Problem: email client (theBat!) is using jpg for all images from clipboard. I need to use png or gif instead. For now I can only save image to disk in needed format and insert through menu - very ...
1
vote
2answers
125 views

Size of the compressed image file deteriorates with usage

I have created a VDI file using VirtualBox and need to upload it with compression for other to access. The more I use the virtual machine, the less the compression happens. There is not much of ...
-1
votes
1answer
99 views

How to achieve the compression level of a PDF scanner

I have one paper scanned into a PDF, which has a size of about 700KB and 300dpi. But if I take a snapshot of the PDF file using DPI settings of 300 as well, the image file (in PNG, JPG, or TIFF) is ...
1
vote
1answer
88 views

Most space-efficient format for image with large dimensions but few colors?

Recently I have had to scale up the dimensions of a gif image by a factor of 2, this resulted in an increase of the file size by about 8 times. While this is not a complete surprise, I can't help but ...
0
votes
3answers
5k views

How to compress / reduce the size of JPEG photos for archiving? [closed]

I have 50,000 high resolution JPEG photos, where a couple of them might occasionally be needed, about once a year. I wanted to zip them to save disk space, except that zipping gives no space benefit ...
3
votes
4answers
602 views

Losslessly compressing similar images?

I need to reduce the size of my photo library so I naturally want to compress them. Many of them are not quite identical, but still very similar (subsequent shots of the same scene). Is there any ...
3
votes
2answers
226 views

Optimal lossy compression of images

I have a lot of images/documents, where I want quite a low filesize, without throwing away to much information, or cause generation loss with future compression. A) Documents, business cards etc ...
1
vote
2answers
378 views

Multithreaded TIFF to PNG conversion

I'm working with images of scanned books, so hundreds of high resolution pictures. I'm doing conversion work with Photoshop Elements - I can quickly save them to uncompressed TIFF, but converting to ...
2
votes
1answer
172 views

Check level of compression of an image

Is there a unix command to check the level of compression or the compression ratio for an image (png,jpeg,gif)? The mac based mdls command displayed a lot of metadata information, but didn't mention ...
5
votes
1answer
6k views

How to compress jpg images in Linux

I know that there is 'jpegoptim' to do so. But it not always downsize images as expected. For example if I execute jpegoptim --max=50 *.jpg on a 550KB image, the size will not really reduce. So I ...
1
vote
1answer
80 views

Compressing images, which format to choose?

Might be a silly question, but I really don't know much about images formats. I have some family photos in my external hard drive but noticed they are really big and it's taking up space, is there any ...
2
votes
1answer
1k views

Turn off compression images inside of a PDF with Ghostscript?

Is it possible to turn off or lower the compression of images inside a PDF with Ghostscript when I convert to jpg? I currently use the following: gs \ -dNOPAUSE \ -q \ -dBATCH \ -dSAFER \ ...
1
vote
1answer
3k views

How to mount a compressed ISO image?

I have problem to mount a compressed (ISZ) image under Linux, which was created by e.g. UltraISO? I am aware about user-space fuseiso, but it fails to mount these images, as I have reported in Debian ...
1
vote
2answers
1k views

How are images stored within a PDF?

The are places that prefer PDF's for printing, and we've also been using PDF as a distributable format that "everyone can open". It's very easy on a mac to save as PDF (or go to "print" and save it ...
2
votes
3answers
3k views

Further compression of disk image files

Is there a way to further compress a disk image file created by the disk utility program on macs? I need to fit a 6.5G/5.5G image onto a 4.7G disk.
1
vote
4answers
329 views

Scanned JPEGs are large and slow to load - can they be optimized losslessly?

I have hundreds of JPEG photographs which were scanned about 5 years ago from negative using a Konica Minolta DiMAGE Scan Dual IV. The dimensions are ~4500x3000, and the filesize is around 12Mb, ...
6
votes
9answers
1k views

How to compress a huge amount of PNG images?

At work, on certain projects I have to manage a lot of images. Most of the time PNG files work the best for what I'm doing. With such a huge amount of images, I've tried using PNG compression with ...