Photoshop: increase the maximum PSB file size.

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  • Updated 11 months ago
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  • (Edited)
For artists working with very high resolution images it would be extremely helpful to increase PHOTOSHOP'S PSB maximum file size, which is currently 2G. Many artists are now printing VERY large-size, hi-res images and the 2G limit is getting quite annoying.
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Elaine Waisglass

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Posted 5 years ago

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Adam Jerugim, Employee

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The PSD file format limit is 2GB, but for PSB files the limit is 300K pixels by 300K pixels (any DPI). I've created multiple files > 60GB using the PSB format since at least PS CS3.

Have you tried saving a PSB larger than 2GB? It should work without issue.
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Elaine Waisglass

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I have tried this and the Epson printer won't accept a larger file.
I'm working with a top of the line printer and a new top of the line Mac computer with maxed RAM .
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Chris Cox

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PSB files work up to around 4 Exabytes, and we can't go beyond that without changing the OS file APIs to allow more then 64 bits for the file size and position.

PSD files are limited to 2 Gig because of the file format design and compatibility with other applications. That really cannot be changed. That's why we created the PSB format, to allow for much larger files (in pixel dimension and total file size).
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Elaine Waisglass

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Is it possible to create a new PSB category that would allow very high res pictures to be exported to the larger Epson printers? Artists in the art gallery world (including me!) would greatly appreciate being able to work much larger with much higher res images than is currently possible.
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Chris Cox

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That has nothing to do with the PSB format.
That's all up to Epson - they could read PSB, or TIFF, or anything they wanted.
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Elaine Waisglass

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(CONTINUED) ... in other words, is it possible to rise to the occasion and change the OS file APIs to allow more then 64 bits for the file size and position? It's a creative challenge that would be a huge benefit to the art world to achieve that advance in the technology. Needless to say the Photoshop software improvement would have to be compatible with the Epson printer software.
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Chris Cox

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No. And there really isn't a need yet, since nobody currently has 4 exabytes of storage, and PSB already can go that large (aka, much larger than you can make a file, much less load or save a file).
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Elaine Waisglass

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As a test, I just printed a 2.8 GB PSB file on an Epson Stylus Pro 7900 (I also have an Epson 9900). The printer couldn't cope and only printed 2/3 of the picture and gave up, printing black for the rest. However the resolution of the 2/3 of a picture was stunning. Just what I wanted. It would be very helpful to be able to accomplish better-resolved pictures. Can you think of a way to do it?
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Chris Cox

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That sounds like you need to talk to Epson about their driver software or printer firmware. We've seen limits in the past where the printer couldn't handle more than 65535 device pixels without errors (though that's been a few years).

It really sounds like this has nothing to do with file size limits, and everything to do with limits of your printer software.
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JRH

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Ms. Waisglass, Mr. Cox is correct- your issue has nothing to do with Photoshop whatsoever- rather the amount of memory your PRINTER has or is able to use effectively.

You seemed to overlook that when Mr. Cox said .PSBs can be 4 exabytes, that means 4 BILLION GIGABYTES. Yes. Gigabytes.

So 4 billion is of course already a whole lot more than 2, 4, or 10.

To give better perspective, .PSB offers file-size capability approx. the size of one week's worth of ALL INTERNET TRAFFIC.

That's very future-safe. Pardon me for being presumptuous, but most of us will never need or have a computer that can process or store that, especially not for an image.

So the creative challenge you asked for would be of exactly no benefit to anyone;

these guys not only rose to this occasion long ago, they far surpassed it by unimaginably large margins.

I recommend a little more research next time before trying to pin folks w/ such bold challenges; you might have realized that .PSB file size wasn't your problem simply by looking up "exabyte," and instead would be commending Mr. Cox and Adobe for how astoundingly well they've already taken care of us on that particular issue.

Questions you can use to solve a similar problem in the future:
-How much memory is in my printer?
-How much of that can it use at once?
-Do I need to get more and can I?
-Or will a print driver, or printer firmware update allow me to use more of what I already have?
-Is there any way I can make a smaller file (in giga/mega bytes) without losing image size or resolution? (Yes, look into .PNG, TIFF LZW, or JPEG2000 compression among others)
-Or do I just need a better printer, with more memory, able to handle larger files?

Best of luck with your art, I'm sure it's gorgeous and I hope this answers everything for you in more detail and has left you feeling more empowered.

p.s-
(I'm an imaging expert and can probably solve all such things for you very fast, though I'm more interested in teaching how to solve on one's own-- if you'd like to reach me, feel free to reply and let me know, and I'll pass along my email. Cheers.)
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abby lippitt

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(Adam Jerugim (Employee) 1 year ago
The PSD file format limit is 2GB, but for PSB files the limit is 300K pixels by 300K pixels (any DPI). I've created multiple files > 60GB using the PSB format since at least PS CS3.

Have you tried saving a PSB larger than 2GB? It should work without issue.)

Hello Adam, or to anyone who knows the answer to this question.
Does this apply also to Photoshop CS 6 Extended as well as the CC?
In other words does the Photoshop CS 6 Extended PSB files have the same capacity as the CC files?
Thank you for your help,
Abby
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Chris Cox

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Yes, it applies to all versions of Photoshop since PSB was added back in Photoshop CS.
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abby lippitt

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Thank you so much! You have been a big help!
Abby
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Jesse Boles

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What you probably need is a RIP software to run your epson, I used to use some that could send a file in different ways, taking a lot of the buffering away from the printer, or sending to a print server which fed data to the printer.