Photoshop: Help to see the actual size before I save it as tiff with LZW

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I would like to know how I can see the actual size file before I save it. I work with very large files and some times I get over 4GB and I cant use the tiff format, but photoshop doesnt know this, and I lose time when I have to re-save the file again .
This is a big problem for our company since we lose alot of time when we working with pictures everyday.

and request!
I want to make groups for paths and alpha channels an be able to select the group or many paths/alpha and delete.
If I make a car retouch I can have 50 paths, and When I want to save the file as a RGB I have to delete each path, Its takes for ever!

And How can I be a test pilot and make suggestions/develop for photoshop?

Regards,

jesper.hammarback@linjepunkt.se
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Jesper Hammarbäck

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Posted 8 years ago

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PECourtejoie, Champion

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Hello, Jesper. you should maybe cut your post in three: the question, the request, and your third paragraph would make a good question.

As for the first question, the issue is that Photoshop cannot guess how well your file will compress: are there many areas of the same color, several layers, etc.
I guess that you need to use tiff for compatibility... PSB might be a better option if you deal with large files...
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Jesper Hammarbäck

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Yes PSB do I use when I reach 4GB files. But it takes longer time to save and open.
And Since I dont know if I reach 4GB i save it first as a tiff and get a prompt that its larger then 4GB and I have to resave again. its very annoying, shouldnt photoshop be able to know before I save how big the file is? or at least get an prompt right away that it will be bigger then 4GB.
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Joergen Geerds

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If you are concerned about the time it takes to save a PSB, please feel free to join me in my request to disable the layer compression (via plugin) in PSB files (reverting to something simple like packbits)... without LZW/ZIP compression, layered PSB files might not be as small as possible, but at least they save much much faster, making them a viable tool, and not something you would dread every time you want to save.
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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The way I understand it, the speed improvement from this might not be as great as one would imagine. Adam or Chris may have better info.
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Jesper Hammarbäck

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well just a single step like having to re-save a file, is not that big but If im working on a big ad from H&M and have a deadline and I have to resave 20 pictures from TIFF - PSB it becomes a problem. Dont get me wrong. im not upset about this, im just wondering if there is a way to see before I save a file if I can save it as TIFF or if I have to "save as" PSB.
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Joergen Geerds

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Jeffrey: I spoke with Chris about this issue in the past, the plug-in was kinda his idea, but I have no idea where it went... the performance improvement would be tremendously: layered 16bit PSB files save with about 10MB/s due to the heavy LZW/ZIP compression (single-threaded), while ptgui for example can save the same file with packbits at a rate of 80+ MB/s (somehow only limited to the write speed of the disk, a RAID or SSD would be obviously faster)... so, no or packbits compression would result in 10x faster saves of my files, and Jesper wouldn't have to think about what file format he needs to use. (I am talking about PSB files from 0.5 to 10GB... a 10GB file can easily take 15-30min to save)
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Joergen Geerds

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Disabling the compression for PSB files is now possible, making PSB a really FAST file format to save. Thank you Chris (or who else worked in it), this is an awesome plugin: http://kb2.adobe.com/cps/902/cpsid_90...
For those concerned with PSB file size for preserving server space, you can simply zip the PSB file at the very end, once you are done with all the work.
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Chris Cox

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Yeah, that is one of my "why not" plugins.
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PECourtejoie, Champion

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If there was no compression, Photoshop could calculate the file size exactly.

But with compression, Photoshop cannot guess if your image is a noiseless picture of a bird in a blue sky that would compress a lot, or a complex image shot through trees, with a lot of noise, that would not compress. It can give you an estimate, though:

Select document sizes in the status bar, located on the lower left of the document window. http://help.adobe.com/en_US/photoshop...
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Jesper Hammarbäck

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Yes and Document size in the document window isnt`t accurate, it only display what photoshop uses when I have it open, not the actual phyical size on the hard drive. even when I use no compression.
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PECourtejoie, Champion

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For your second suggestion, see this request, you could weight in http://feedback.photoshop.com/photosh... It does not deal about groups, but about multiple select and deletion...
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Jesper, is your request for groups more about organizing your paths or creating a way to quickly delete them? If you were able to select more than one path at a time, would that be sufficient for your needs? If so, add a vote to the topic here: http://feedback.photoshop.com/photosh...

Otherwise, create a separate idea for "Photoshop: Allow grouping of paths for organization"
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Jesper, I've created a new question topic for your question: "How do I become a Beta Tester for Adobe Software?" here:

http://feedback.photoshop.com/photosh...
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Official Response
Chris or Adam would be able to better answer question on estimating the size prior to save. I think the short answer is, we don't have an accurate way to predict the compressed size and don't know until we actually save the file.
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Jesper Hammarbäck

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Ok thanks for your time! :) really helpfull even if I dont get the right answer :)
/jesper
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Chris Cox

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As Jeff already said: we do estimate the file sizes before save, but we can't get an accurate estimate without actually doing the compression and writing out the full file. Then we do more checks for size issues during and after the save.

How much an image will compress is very, very image content dependent - and you can't know how much it will compress without doing all the compression. We have approximations, and err on the side of safety, but we can't just come up with an accurate number ahead of time.