Resizing photos to file size.

Hi all, I'm trying to resize a pic to 10 k file size for use as an online avatar. Ideally I'd like to keep it around 100 by 135 pixels. In Windows this is very easy but in the amazingly overhyped and under-featured iphoto it appears to be well nigh impossible. Any ideas on how to do this for someone who desperately wants to stay in osx but increasingly finds App apps unfathomably obtuse? Thanks for your time.

Yep, been there done that but no joy. There's no mention of re-sizing a photo by file size in the help file and no ability to do so in Export. And to tell the truth, having to export to re-size is really clunky not to mention, somewhat erratic. I managed to get the file down to 8 kb by reducing it to 45 x 45 pixels but that's too small. My next size was around 105 x 140 and came in at 20 kb. I attempted to reduce the file size by reducing the photo size in stages down to 60 x 80 but the file size would increase rather than decrease. Any useful input?

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Need to resize photo to specific size in Photoshop Elements 11

I have a photo that is 1500 x 800 that I want to use in Facebook for the cover photo. The cover photo size is 851 x 315. In PSE Editor / Image / Resize, I change the 1500 to 851 but the height changes to 454.
Is there a way to get the height to 351?

OK-got the pixel size right. But file size is 320 kb and should be less than 100. It is a JPG file not PNG. I don't know what a PNG file is. I uploaded the picture to Facebook successfully but the photo was too large I believe.
Facebook says "To get the fastest load times for your Page, upload an sRGB JPG file that's 851 pixels wide, 315 pixels tall and less than 100 kilobytes. For images with your logo or text-based content, you may get a higher quality result by using a PNG file."

Save For Web vs. Resizing vs. File Size vs. PNG

In playing around with some settings while saving a .png file, I noticed some weird results. For this example, the original image is 300 x 300, but I want the final size to be 200 x 200. I get different results depending on the order I perform the following operations (I never thought the order mattered until now).
1. start with 300 x 300 image, choose save for web, select png-24, with transparency, white matte, convert to sRGB, change image size to 200 x 200, then save - the file size is 37kb
2. start with 300 x 300 image, use Photoshop's "image size" to change to 200 x 200, then save for web, etc - the file size is 111kb
So depending on which step I resize the image, the file size is significantly different - if I resize BEFORE using save for web, the file size is much larger. This is just weird to me, but I always resize AFTER choosing save for web, so that's why I've never caught this until now. In case you ask, while using Photoshop's "image size", all three options are checked at the bottom of that window, so nothing is getting re-sampled or anything like that.
The only thing I can think of is each of those methods treat pixel data differently when reducing the dimensions. When I overlay both exported .png files on top of each other, I see no difference in pixel quality and/or color shift - so why the big difference in file size? Unsurprisingly, if I just save the file straight to .png, the sharpness is much better, and the file size is 46kb. I did notice when saving for web, the colors become a little more saturated.
Are all these results typical? I've never really paid much attention to the results when exporting .png's. I always thought the results were lossless (in general).

Too many variables
What? There are 2 variables here (variables = scenarios = steps). Only two different operations.
1. resize the image, THEN use "save for web" = 91kb
2."save for web", THEN change image size = 157kb
Hopefully my logic translates here:
All other settings are the same. I even made sure the .psd was sRGB this time. The specific question was "why does the different workflow order produce such a big difference in file size"?
In creating a new test file (http://www.shan-dysigns.com/userForums/photoshop/savePNG.zip), I did notice an interesting thing: (I'm including my files in case you want to follow along or test for yourself)
If I merge all layers BEFORE performing the steps above, the file sizes were relatively closer to one another - 168kb and 157kb (respectively from the 1, 2 list above)
One thing to note is all the .psd layers are either shapes or text - this whole scenario may be totally different if each layer had rasterized content (actually, it does, by about -20kb).
The file size in step 1 above didn't jump until it had to consider rastered text/shapes into the calculation. So all this tells me the difference in file size has to do with how each process handles vector data. Maybe when you allow PS to resize the image first, the overall file size is smaller because the vector data gets recalculated???
I don't know how to properly interpret all these differences, but I do know there is something about PS's operation of resizing the canvas with vector data versus resizing the canvas with rasterized data - this has to be where the difference in file size lies.
Maybe I've just wasted a bunch of time on the obvious, but I think I learned something here. Now my head hurts and my eyes have popped out of my head.
So, Chris, I guess there ARE more variables in this situation. My curse is being nosey and wanting to know more technically about PS than most casual designers probably would care about.

Photo Book file size

Hi!
What's a normal file size figure for a standard doublesided photo book in large format? I just compiled and sent away a book, and the file that was uploaded was around 13Mb. I thought that was kind of small and became worried that perhaps I had a less then optimal resolution preference set somewhere (I've done the DPI hack thing), but perhaps they usually turn out in this size. Any expericened Photo Book maker who can confirm?
Thanks a lot!
Erik

That may be about right. I just created a large, double-sided, 60 photo, 29 page pdf book thru the ordering process (canceled at the last window) that came in at 18MB. The pdf's that were generated with iPhoto 5 were much bigger .

How do I change a photo's file size?

I need to upload a photo to a website, but it can't be larger than 2mb. How can I save it as a smaller file size?

Changing the quality setting will apply more jpeg compression to the file and reduce its file size without reducing the image size. If you want to reduce the image size also then change the pixel dimensions as Larry methoned. A combination of the two can get you the best possible image at the 2 MB or less file size. May take a little trial and error.
OT

Sorting photos by file size

When I switched from my PC to the Mac the photos that were imported from my Picasa backup created more than one file, sometimes 3 of each image! I need to be able to start organizing my photos and I really need to delete the smaller images. I can not figure out how though, and it is driving me insane!!! Not to mention chewing up a TON of disk space!
HELP!!!!!
How do I sort by image/file size so I can delete them?!?!? (And not screw up and delete a precious photo of my kids as infants?)
MacBook Mac OS X (10.4.9) Formerly Win 2000 PC

zzwhitejd:
Welcome to the Apple Discussions. It may be how Picassa and windows handles thumbnails as opposed to OS X. When you imported directly from the PC you might have imported the support files that, on the Mac, contained in the Resource Fork of the file. If you can try copying some of the files again to a folder on the desktop first and see what you get in the way of the number of files.
To get rid of those duplicates already in the library you can try using Duplicate Annihilator or iPhoto Diet. In either case make a backup copy of the iPhoto LIbrary folder just in case the results are not what you expected.
Do you Twango?
TIP: For insurance against the iPhoto database corruption that many users have experienced I recommend making a backup copy of the Library6.iPhoto database file and keep it current. If problems crop up where iPhoto suddenly can't see any photos or thinks there are no photos in the library, replacing the working Library6.iPhoto file with the backup will often get the library back. By keeping it current I mean backup after each import and/or any serious editing or work on books, slideshows, calendars, cards, etc. That insures that if a problem pops up and you do need to replace the database file, you'll retain all those efforts. It doesn't take long to make the backup and it's good insurance.
I've written an Automator workflow application (requires Tiger), iPhoto dB File Backup, that will copy the selected Library6.iPhoto file from your iPhoto Library folder to the Pictures folder, replacing any previous version of it. You can download it at Toad's Cellar. Be sure to read the Read Me pdf file.

Ipad Photo - Making File Size Smaller for emailing

How does one make pics smaller (file size) for emailing?

The Photo Pad app allows you scale the photo. I just checked and it does also reduce the file size. You can email the scaled photo from the app.

Photo imports - file size inconsistencies

I have lots of 60MB .tif files that I convert to .jpg before importing into the Starter Edition. I am getting confusing messages - sometimes it will let me import 4MB .jpg files and the next minute it will not import a 1MB .jpg files - says "File is too big". Anyone know what is going on? I have P4 3.2 and 512MB and lots of disk space.
Thanks

> If Adobe posted some guidelines on this matter it would be appreciated.
They have for th epaid-for version. I don't think they'd see it as relevant to the free version, as this is aimed at digital photographers who will not encounter any limitations in this respect.
You might find the FAQ on the PSA forum helpful. This posting is probably what you're after:
Forums Operations, "I am receiving an error "File is too large" when importing some photos. Is there a file size limit?" #, 20 Oct 2003 8:59 am
The paid-for version is certainly closer to your needs [it can handle the TIFF files, for example]. But I would recommend looking at PSE instead, as it gives even more capability [at a bargain price].

Importing photos resolution / file size

I am doing what is turning out to be a very long movie (1.5hrs). It contains a lot of imported photos, and I think it is those that has made it such a large file (they were taken on quite a high resolution so the file sizes are around 10 - 17 MB each). The entire project is 13GB and I have not finished it yet. Consequently I haven't enough memory to save a backup, and there is no way it will fit onto a DVD. So, my questions are:
Can I / do I need to reduce the file size of the photos I have already imported? (I have Ken Burns effects on all of them - if I can reduce the file sizes will I lose all this?)
What resolution do your photos need to be for them to be of good enough quality on a movie? (so that if I want to import any more I can bring them across at a lower resolution in the first place)
And finally how on earth am I going to get this project on a disc?! Please treat me gently with this one - I have read some of the previous forum answers and don't understand them
Thanks
Chelle Belle

Please treat me gently with this one ...
good morning, Chellebelle, like some coffee.. ?
'size'/better: resolution ..
a video is by standard ~640x480 pixel... you know, what a pixel is? a tiny dot. lots of dots = a picture.. lots of pictures = a video...
your stills are obviously larger, contain much more pixel. this is useful, when you apply lots of Ken Burns effects... you could lower the res in a pic processor (e.g. iPhoto allows in its Export dialog a 'lowering' or res)... but.. a lot of work, what for...?
size of project ..
video is, by standard, 13GB/h ... no workaround for this... aside: larger harddrives...
just a word about the 'speed' and 'health' of your Mac: make sure, you have allways 10 - 15 GB free on the internal drive (you could use a nice ext. harddrive for iM projects...). going under this recommendation 'brakes' your apps & OS, finally will bring it to a total halt.
size on DVDs ...
when iDVD detects your iM project in the 'Movies' folder (no need to share or send or export, in iM08 Apple axed that mostly useless option...), it will convert it. automatically. so, taadaahh, a ~60GB project (=lots of tape import) magically fits onto a 4.7 dvd-r ... called: converting/encoding...
if any more questions, don't hesitate to post here...
another coffee....?
PS: you get simple, firewire connected harddrives for ~100$ ... a must for the homevideo maker..

Photos: optimum file size for storage

I have a few questions about what is the best way to manage my photos.
Do I need to put my photos into my iTunes library before I can get them onto my ipod? There is no category called photos, so I'm not quite sure where they will go.
Will the file size be compressed before synching it to the ipod so that only the pixels required for the small screen resolution will be kept, or will photos remain in their full original size, limiting how many I can store?
If it goes on as the full original file,
a) will I be able to connect my ipod to photo kiosks to get prints?
b) what are the minimum dimensions and dpi that will show nicely on the screen so I can manually convert them myself before adding to my library?
I also have a question about album art. I've been able to set my own personal art (eg. family photos) to albums, but I'm not sure if it works for individual songs. As I understand it, these images are compressed and made part of the ID3 tags. Does this take up a significant portion of available memory?

Ian Parkinson wrote:
You don't add your photos to iTunes at all, it does not actually show them in iTunes like it does music.
You can't prepare for the photos transfer before you get the iPod as you will only see the photo setting once the iPod is connected.
Once the iPod is connected there is a new tab in iTunes that lets you select the photos you wan to put on the iPod, basically it lets you select a folder.
I suggest you read the manual here, it explains it all :-
http://manuals.apple.com/manualsList?config=W4N&model=iPodtouchManuals
Ian
Thanks. I didn't realize there was no way to prepare the photos, because it's certainly taken me a long time to prepare the music.
I've been reading the manual, and it does not explain those questions I asked.
+If you’ve set up photo syncing, iTunes automatically copies or updates your photo library (or selected albums) from your computer to iPod touch whenever you connect iPod touch to your computer. iTunes can sync your photos from the following applications:+
+Â On a PC: Adobe Photoshop Album 2.0 or later or Adobe Photoshop Elements 3.0+
+or later+
+For information about syncing iPod touch with photos and other information on your computer, see “Getting Music, Videos, and Other Content onto iPod touch” on page 5.+
+(Page 7)+
+You can sync photos from Adobe Photoshop Album 2.0 or later or Adobe Photoshop Elements 3.0 or later on a PC. You can also sync photos from any folder on your computer that contains images.+
It doesn't explain how it's done. How will I tell it which file to grab the photos from? There are four different locations where I am storing photos, and I only want to use one. It also does not mention whether the photos will remain in original format and whether they'll be readable at photo kiosks.
I hope that when I get the ipod it will be more clear.
Thanks for you help.
Any other advice?
Message was edited by: guava1973

Batch Resizing Based On File Size

I have a lot of very large (400-600Mb) tiff files (from a scanner) that all have different ratios (some square, some 4:3, some extreme panoramic). Is there a way I can batch resize them all to a certain file size? (eg 200Mb)
I've been looking everywhere but can't find anyone on any forums trying to do the same thing. Strange because i thought it might be quite a common problem.
Thanks for any help/advice,
Lewis

Resizing is very much dependent on Image compression algorithms (or what ever they are called)… My Guess is that this is beyond the 'average' scripter if you wanted to deal with the open file data size then this can be done. If you want to deal with saved file's system sizes you may well be out of luck…

Help to resize at a file size threshold

I feel as though there must be a simple solution to this issue but I just can't break through. I am attempting to resize an image so that it will be uploadable in a media building program. This program does not allow me to import images greater than 200K and so I went to the image resize function in Photoshop CC. There I found under Image>Image Size, as always, the window which includes the size and dimension attributes of the image (which, incidentally, is a single layer psd as "Background"). As I change the dimensions of the image, I can get the Image Size in the window to reduce to under 200K by changing the resolution, width, and height as needed. When I save the image as a jpg, it does not allow the image to be saved as anything smaller than 1.1M. In the jpeg options window, the file size when saved at a quality of 12 is 1.2M but is 1.1M at a quality setting of 0. I must be missing something. Can anyone shed some light on this for me, please? Thanks!

That worked. For the sake of the discussion, do you suppose that there was something about this image (like metadata) that would simply not allow it to be compressed any further than the minimum size I described? It would make sense given that the image quality was progressively worse as I experimented with reopening the newly saved and slightly smaller file each time. Even then, I could only get a small reduction in total data quantity but the images became poorer and poorer, as you would expect, as the jpeg options window told me I was getting smaller and smaller. The image started to look like it was capped from somebody's Minecraft screen but the size was still up around a meg.

Cropped photo loses file size?

After I crop an image, I cannot export the edited image as full size with high resolution. Is there any way to do it? I need to email files for potential print publication.

That does seem like a over reduction in file size. What quality level are you setting in the export process? Make sure it's not set to a low levle from an earlier export. Actually, setting it to Maximum seems to create a file size larger than the original file which is strange in itself. What size do you get if you just drag the copped thumbnail to the Desktop?
OT

Urgent plz! Help resizing photos to specific size

Am another newbie with Windows XP with Elements v.4.0. Have been handed a project by husband to take some passport-type as well as portrait type photos of relatives from overseas & resize them to certain dimenions (ex: 2" x 2", or maybe even something in centimeters. (He keeps changing sizes on me!) The current photo size info showing up under photos in the Editor are varying between all 8 photos (ex: 5.12" x 3.413" (150 ppi)), etc. None of them have the same dimensions!
I have looked in the book & in HELP, but whatever I try to do, they look wierd & out of proportion (in EDITOR) after applying changes. I've also tried to just do it in the print dialog box, but the proportions are locked & if I change 1 (either width or height) the other 1 changes automatically & not to the size I want.
I just know that a program as advanced as this should have a way to do this with the photos not looking out of proportion when finished, but I can't seem to make it happen & would so appreciate any help given, as this is not the only time that I know I'll want to do this (I am heavy into scrapbooking-need I say more?!) Thanks so much in advance.
Glenda

Hi Mark, I'm trying to use the crop tool, but the problem is, none of the images are allowed to be cropped. (They are scans of passport/government-type pages with photos & official description & stamps on them. I have to leave the images just as they were sent to us in email, except that I need to change the size of each of them to 2" x 2" & have them turn out to look in proportion.
With your 2nd suggestion (in Crop tool set target dimensions, as well as set resolution to 240 or 300 ppi), are there additional steps after that??
I followed the steps just as you had outlined & then went to try to print. It brought up a dialog box which still showed under the print size box the (original) actual size of the photo.
Here's what else was in the dialog box:
1) A warning saying: Image will print at less than 220 ppi at the selected size.
2) SCALED PRINT SIZE BOX:
Scale: 100%
Height: 2 inches
Width: 2.907 (there's a chain lock attached between the height & width).
If I change the width box to 2" then it changes the height box to 2.907.
What am I doing wrong? I just know this should be way easier than it is appearing to me right now. Thanks again. Glenda
P.S. I forgot to tell you that I have 2 printers to choose from (if it makes any difference). Besides the Epson, I also have an HP Deskjet 990cse Pro Series.

Why do my photo file size increases upon export?!?!

This is driving me nuts. I have Aperture 1.5.2 referencing an iPhoto library. When I look at the metadata toolset I can see each photo's file size. I have all my photos already resized to fit in an 800x800px box. When I export through Aperture using "export version jpeg original" I get an increased file size. When I export using the master version I don't. I went through and added iptc caption data that only seems to export with the version not the master. I can't believe a line of txt adds so noticeably to the file size. If I need to export my photos with the iptc caption data and want to retain my original file sizes how should I go about it?
Thanks,
Michael

chuck,
it all depends on 2 factors. a - your original file (pixel dimensions, format, compression level, color and bit depth) and the exported file (pixel dimensions, format, compression level, color and bit depth).
just as an example - if you take a quite strongly compressed jpg (lets say at 5) and export it to be a less compressed jpg (10 to 12), the file size in kb will be larger, while maintaining the same amount of pixels. what has changed is the way the information are stored within the jpg +(to say it very simplified and without going into details about compression and possible loss of data etc)+.
if you'd take a high-res 16-bit tif and export it (again at exact same pixel dimensions) as jpg, you'd get a much smaller file, still the same pixels (at least the amount of pixels, however perhaps "lower quality" pixels, depending on compression level, original image, noise, tonality etc etc).
long (technical) story short: there is no real "one answer fits all" because it heavily depends on your original image. as a rule of thumb however, print files should be in 300 dpi and images for the web in 72.
in terms of color and bit depth it now depends who you're sending the files to. if you send them to your client, use 8 bit sRGB. if you send it to a graphic designer, i'd send him 16-bit tif files in adobe rgb. all of this makes no sense if your original image was a heavily compressed 8 bit sRGB jpg of course.

Resizing photos to file size.

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