Reducing megapixel / JPEG Size in iPhoto?

All of my photos are in the 2.5 megapixel range, but most sites (and e-mails) want them significantly smaller.
How can I use iPHoto to reduce the size of the photo (and not crop it down!).
Thanks in advance.

Another way to reduce the file size is to export them to the Desktop and use a file resizer application like Resize! to reduce the quality level (jpeg compression level) and, if necessary, the pixel dimensions of the image.
Click to view full size
You can play with pixel size and quality level to get exactly what you need.
OT

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Jpeg size for iphoto books?

Hi, have found that some of my jpegs are to small in size to print properly for books. Does anyone know what size is best for making books?

The best size is as large as you can get. iPhoto will
Default DPI Settings in iPhoto 7's Preference File
BookTargetDPI - 300
BookTargetMediumDPI-300
BookTargetSmallDPI - 300
BookWarningImageDPI - 180
PrintImageDPI - 720
PrintWarningImageDPI - 140
So if the photo you put in a frame will be printer at less than 180 dpi you'll get the warning label. A photo might give you that warning at a full page frame but will be OK in a 2 photo/page frame. I've have photos print with that warning and they looked OK. What are the pixel dimensions of your smallest photo. The smallest I've used is 1600 x 1200 and created a whole book with that size. I did not have any full page photos however.
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 created 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. It's compatible with iPhoto 08 libraries. iPhoto does not have to be closed to run the application, just idle. You can download it at Toad's Cellar. Be sure to read the Read Me pdf file.

Imported pictures are HUGE. Way too big. How do I reduce JPEG size?

JPEG size imports WAY TOO BIG. How do I reduce JPEG size? Thanks so much@!!

Set your camera to take lower quality pictures is the obvious answer here. You can reduce the size of image already in iPhoto when exporting them.

Btach reduce file size within iPhoto interface

Fellow iPhotorers
Is it possible to bulk or batch reduce file size within iPhoto - i.e. without having to export then re-import the pics THEN delete the originals?
For example - if I have shot a bunch of pics at high res which I decide or worth keeping as small (low KB) jpegs and not 3MB camera originals.
Cheers
Russell

Russell:
Welcome to the Apple Discussions. Depends on what you mean by resize. Do you want to reduce the pixel dimensions, say from 2272 1704 to 800 x 600 keeping the same ratio of dimensions, and, thus, reduce the file size? Or do you want to keep the original pixel dimensions and reduce the file size, which requires a reduction in quality thru greater compression?

How can I reduce the size of IPhoto ?

I have tested IPhoto with a few hundred pictures.
I do not find this software very user-friendly, in particular because I can no longer locate the files of these pictures. I kept fortunately a copy of my complete set of my photo collection.
I removed all pictures from IPhoto, but the application shows a size of 600 Mb.
How can I reduce the size of IPhoto and recover this storage space?

patrick
in particular because I can no longer locate the files of these pictures.
There are three ways (at least) to get files from the iPhoto Window.
1. Drag and Drop: Drag a photo from the iPhoto Window to the desktop, there iPhoto will make a full-sized copy of the pic.
2. File -> Export: Select the files in the iPhoto Window and go File -> Export. The dialogue will give you various options, including altering the format, naming the files and changing the size. Again, producing a copy.
3. Show File: Right- (or Control-) Click on a pic and in the resulting dialogue choose 'Show File'. A Finder window will pop open with the file already selected.
Rolls in the iPhoto Window (View -> Film Rolls) correspond exactly with the Roll Folders in the Originals Folder in the iPhoto Library Folder. You can move photos between Rolls, you can rename rolls, edit them, create them, as long as you do it via the iPhoto Window. Check out the Info Pane (wee 'i', lower left) the name and date fields are editable. Edit a Roll Name using the Info Pane, the Roll Folder in iPhoto Library Folder/Originals will also have the new name.
You might also like to explore the iPhoto tutorials at http://www.apple.com/ilife/tutorials/iphoto/index.html
Use the Get Info window to remove unwanted language resources.
Regards
TD

How do I reduce file size of iPhoto library that's had photos deleted?

I created a calendar in my iPhoto library (which contains thousands of photos). I want to save the calendar now as a separate library with just the calendar in it. I duplicated my iPhoto library and deleted everything except for the dozen or so images used in the calendar. However my iPhoto library is still over 10GB! I've checked the trash is empty and I've rebuilt the database. Is there anything I can do to reduce the file size of the library?
Thanks

Empty the system trash. If that doesn't help:
Go to your Pictures Folder and find the iPhoto Library there. Right (or Control-) Click on the icon and select 'Show Package Contents'. A finder window will open with the Library exposed.
Is there an iPod Photo Cache? You can delete that too...

How do I reduce the file size of my pictures

I am running out of space on my hard drive and notice that my iphoto library contains over 5000 pictures and is about 15GB. This is about 3MB per picture. I checked and lots are over 10MB. Most pictures I only print in 10x15, the largest i ever printed was A4 sized. I guess i don't need to keep such large files. These cameras are now set to make pictures with too many pixels I guess...
does anyone know of a way to reduce the size of all my picture files?
thanks
p

1. Reducing the file sizes of your pictures will not just reduce their quality when you print, it wll also negatively affect their quality no matter how you view them. Remember the screen quality on your next mac will be better than this one, and even more so on the one after.
2. The simplest solution to a size issue is to store the Library on an external disk, You can do this with iTunes and iMovie too.
3. If you really want to reduce the quality of your photos then there is no way to do that in iPhoto. Here's what you'd have to do:
Export the Pics from iPhoto (File -> Export) and in the Export dialogue make your choices on Jpeg Quality (the amount of compression used) and size (the dimensions)
Delete the pics from iPhoto
Import the ones who have exported back to iPhoto.
Give away your camera and get a lower quality one
Regards
TD

Do I need to reduce the images size in pixels before upload them to M.Me?

Do I need to reduce the images size in pixels (actual size jpeg 5616 × 3744 pixels/766kb) before upload them from iPhoto to a Mobile Me Gallery?
Otherwise they will be heavy or the upload process take care of that?
It would be nice that iPhoto took care and optimize the images to display online without any more work, because I´ve 1200 images to upload and they´re jpegs 5616 × 3744 pixels. It´s just to viewing purposes. Not o download or print.
Thanks.

In fact no matter if I use a High or Medium compression size JPEG, the size after upload is the same.
Starts with 1,5 MB/5600px (high) or 780kb/5600px (medium) JPEG and ends after upload in 115kb for a 1024px image.
This means that iPhoto auto compress in order to publish to Mobile Me, even if we start with a bigger file.
I hope this info is useful to others.
Thanks.

A simple and free way of reducing PDF file size using Preview

Note: this is a copy and update of a 5 year old discussion in the Mac OS X 10.5 Leopard discussions which you can find here: https://discussions.apple.com/message/6109398#6109398
This is a simple and free solution I found to reduce the file size of PDFs in OS X, without the high cost and awful UI of Acrobat Pro, and with acceptable quality. I still use it every day, although I have Acrobat Pro as part of Adove Creative Cloud subscription.
Since quite a few people have found it useful and keep asking questions about the download location and destination of the filters, which have changed since 2007, I decided to write this update, and put it in this more current forum.
Here is how to install it:
Download the filters here: https://dl.dropboxusercontent.com/u/41548940/PDF%20compression%20filters%20%28Un zip%20and%20put%20in%20your%20Library%20folder%29.zip
Unzip the downloaded file and copy the filters in the appropriate location (see below).
Here is the appropriate location for the filters:
This assumes that your startup disk's name is "Macintosh HD". If it is different, just replace "Macintosh HD" with the name of your startup disk.
If you are running Lion or Mountain Lion (OS X 10.7.x or 10.8.x) then you should put the downloaded filters in "Macintosh HD/Library/PDF Services". This folder should already exist and contain files. Once you put the downloaded filters there, you should have for example one file with the following path:
"Macintosh HD/Library/PDF Services/Reduce to 150 dpi average quality - STANDARD COMPRESSION.qfilter"
If you are running an earlier vesion of OS X (10.6.x or earlier), then you should put the downloaded filters in "Macintosh HD/Library/Filters" and you should have for example one file with the following path:
"Macintosh HD/Library/Filters/Reduce to 150 dpi average quality - STANDARD COMPRESSION.qfilter"
Here is how to use it:
Open a PDF file using Apple's Preview app,
Choose Export (or Save As if you have on older version of Mac OS X) in the File menu,
Choose PDF as a format
In the "Quartz Filter" drop-down menu, choose a filter "Reduce to xxx dpi yyy quality"; "Reduce to 150 dpi average quality - STANDARD COMPRESSION" is a good trade-off between quality and file size
Here is how it works:
These are Quartz filters made with Apple Colorsinc Utility.
They do two things:
downsample images contained in a PDF to a target density such as 150 dpi,
enable JPEG compression for those images with a low or medium setting.
Which files does it work with?
It works with most PDF files. However:
It will generally work very well on unoptimized files such as scans made with the OS X scanning utility or PDFs produced via OS X printing dialog.
It will not further compress well-optimized (comrpessed) files and might create bigger files than the originals,
For some files it will create larger files than the originals. This can happen in particular when a PDF file contains other optomizations than image compression. There also seems to be a bug (reported to Apple) where in certain circumstances images in the target PDF are not JPEG compressed.
What to do if it does not work for a file (target PDF is too big or even larger than the original PDF)?
First,a good news: since you used a Save As or Export command, the original PDF is untouched.
You can try another filter for a smaller size at the expense of quality.
The year being 2013, it is now quite easy to send large files through the internet using Dropbox, yousendit.com, wetransfer.com etc. and you can use these services to send your original PDF file.
There are other ways of reducing the size of a PDF file, such as apps in the Mac App store, or online services such as the free and simple http://smallpdf.com
What else?
Feel free to use/distribute/package in any way you like.

Thanks ioscar.
The original link should be back online soon.
I believe this is a Dropbox error about the traffic generated by my Dropbox shared links.
I use Dropbox mainly for my business and I am pretty upset by this situation.
Since the filters themsemves are about 5KB, I doubt they are the cause for this Dropbox misbehavior!
Anyway, I submitted a support ticket to Dropbox, and hope everything will be back to normal very soon.
In the meantime, if you get the same error as ioscar when trying to download them, you can use the link in the blog posting he mentions.
This is out of topic, but for those interested, here is my understanding of what happened with Dropbox.
I did a few tests yesterday with large (up to 4GB) files and Dropbox shared links, trying to find the best way to send a 3 hour recording from French TV - French version of The Voice- to a friend's 5 year old son currently on vacation in Florida, and without access to French live or catch up TV services. One nice thing I found is that you can directly send the Dropbox download URL (the one from the Download button on the shared link page) to an AppleTV using AirFlick and it works well even for files with a large bitrate (except of course for the Dropbox maximum bandwidth per day limit!). Sadly, my Dropbox shared links were disabled before I could send anything to my friend.
I may have used a significant amount of bandwidth but nowhere near the 200GB/day limit of my Dropbox Pro account.
I see 2 possible reasons to Dropbox freaking out:
- My Dropbox Pro account is wronngly identified as a free account by Dropbox. Free Dropbox accounts have a 20GB/day limit, and it is possible that I reached this limit with my testing, I have a fast 200Mb/s internet access.
- Or Dropbox miscalculates used bandwidth, counting the total size of the file for every download begun, and I started a lot of downloads, and skipped to the end of the video a lot of times on my Apple TV.

When I download pictures from my camera, they turn out a nice big size in iPhoto; other pictures that have been e-mailed to me or imported from older libraries/other computers show up small. Why is this, and how can I make them all the larger size?

When I download pictures from my digital camera into iPhoto, they turn out a nice large size (usually almost the full screen), but when somebody e-mails me pictures and I import them into iPhoto, or when I transfer old photos from an old library into my new iPhoto library, they turn out very small--not exactly thumbnail-size, but too small to use for calendars or photo books. I don't know much about computers, so I don't know how this happened. Also, I can't find any discernible pattern to why this happens with some pictures and not others--ie: what I described above is usually true, but I have had e-mailed photos or old photos turn out the way I want them, which is in the larger size in iPhoto. Why is this happening, and how can I make all the pictures the larger size?

Some mail programs, including Apple Mail, can reduce the size of images that are attached to a message. It's happening at the sender's end, and all you can do is ask the sender for a larger image.

How can I reduce the file size of a pdf when exporting?

I don't want to just choose between high quality print or smallest file size.
I want to export it from 60MB to 40MB.
Can I do this manually? When I use smallest file size the quality is too low and the content looks bad.
But high quality print exports my PDF at 60MB which is too big.

You cannot simply legislate the size of a PDF file. If you content is primarily text and vector, there is not much at all you can do to reduce PDF file size other than to cut out content. Otherwise, the only other variables are those of downsampling and compressing the raster images from your content.
You must be very careful in choosing the PDF export settings. The “smallest size” settings yield PDF files that realistically really are not fit for printing and may mess up any CMYK colors. The “high quality print” and “PDF/X-4” settings yield best print output, but yield the largest PDF files since they do less image resolution downsampling and only the maximum quality lossy JPEG compression.
I would recommend that you start with either the “high quality print” or the “PDF/X-4” settings and make a custom set of export settings. Assuming that you aren't going for offset or gravure printing, change the color image and grayscale image downsampling values from 300 and 450 to either 200 and 275 or no less than 150 and 225. If that doesn't give enough file size reduction, change the compression image quality from “Maximum” to either “High” or no less than “Medium.” Beyond these changes, you may end up with PDF files that will neither print nor display with any reasonable quality.
- Dov

How do i reduce the file size of a picture?

I am trying to reduce the file size of a picture? It is 1.7MB and I need it to be smaller.
Help?

File -> Export
The two settings that most affect the filesize are Jpeg Quality and Size.
This User Tip
https://discussions.apple.com/docs/DOC-4921
has details of the options in the Export dialogue.

How do I reduce the "KB" size of a photo to better send on e mail?

How do I reduce the "KB" size of a photo to better send on e mail?

Where is the image? What software are you using? What software do you have?
(If it is iPhoto or Aperture, you might get better answers in those forums:
Aperture
iPhoto

Exporting a book to pdf - any way to reduce the file size?

Hi,
So I have made a book using iPhoto and would like to send a pdf copy of it to another person who will fill in the texts. I am able to save the book as pdf via the print menu but the resulting file is over 300 mb in size (the book has only 20 pages)! On the one hand i like the fact that iPhoto is not downsampling my photos but it's a bit difficult trying to send a 300+ mb file over email Is there any way to create a pdf with the images compressed so i could send it as an attachment?

http://beyondteck.blogspot.com/2008/11/how-to-reduce-pdf-file-sizes-on-mac.html
Google is your friend.
Regards
TD

Reducing PDF File Sizes

We create and use numerous pdf files, some with fill-in fields and some without. Is there a way to reduce the file size without adversely affecting response time to open the file? Some of us are running Acrobat Professional version 7 and others are running version 8. Some of us have Windows XP and some have Windows 2000.
Any help you can give us would be greatly appreciated.
Thanks.
Ken K

>I thought that if a file was compressed in some way that it might take some time to decompress the file.
I see - entirely reasonable to think that. However, almost every PDF
is already compressed using technologies like ZIP or JPEG. When you
reduce the file size you are usually doing some combination of
* reducing image resolution
* using more agressive JPEG compression
* deleting stuff you can live without
So this doesn't affect the load time.
JPEG 2000 compression is stronger and a bit slower, but probably
nothing to worry about, especially if you don't have high resolution.
Aandi Inston

Reducing megapixel / JPEG Size in iPhoto?

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