Why is the file size so small?

Why is a certain file of about 40 MB that I created, possibly with InDesign CS2, reduced to about 6 MB when I open and rename it using "save as" in InDesign CS4? The 40 MB and 6 MB versions both look identical on the screen and when printed. This just recently happened with one particular file, but not with a similar file. They both contain numerous linked Photoshop images.
I understand that using "save as" deletes possible "undo's" and can reduce the file size. Also, the newer version of InDesign could create a smaller file. But 85% smaller? And why no significant reduction in a similar file.
I don't imagine you often hear complaints about files being too small, but this really has me confused. Anyone ever heard of a similar problem?

Many applications do a "fast save". This includes Acrobat and Word for example. The quick save writes new stuff to the end of the file, making the file larger every time even if you delete things. Some apps use "Save as" to go through and do a slower save of only the things still used. I don;t actually know if InDesign works this way but it's quite likely. Fast save also has the advantage that it's much less likely to corrupt the file you are overwriting.

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When I narrate my keynote presentation, why is the file size so huge?

When I narrate my keynote presentation, why is the file size so huge?

Here are the steps so you can see all the files that make up your Keynote…
Go to the Finder and find your Keynote file and make sure that it has the .key extension on it. If it doesn't, click it and command i to view info and uncheck the box that says Hide Extension.
Delete the .key and change to .zip and then click the use .zip in the dialog box that comes up
Double click the new .zip file and it will change it to a folder
Open the folder there are the files
Close the folder and add .key to the end of the name and click Add in the dialog box (this will change it back to a Keynote file)
You might be able to do this and convert the voice narration to a smaller format.

Why are the file sizes of exported jpegs so small?

I shoot raw, studio portraits mostly. I import to Lightroom 5 as DNG and then edit. Upon exporting as jpegs, the file sizes end up way too small, some of the cropped and/or black & white conversions as small as 560 KB, even with slider to 100%. Un-cropped color photos are ending up from 1.5 to 3MB. What am I doing wrong?

Jim,
Thank you for your response. I think some of the difficulties in this thread are that there have been more than one person reporting issues, which may or may not be exactly the same or different from the initial one reported by the original poster. Then, anyone else commenting can easily intermix bits and pieces from any or all of the other posters interrelated issues. Also, I should have added to my last response in clarification what I meant about the overall dimensions. I was referring specifically to inches, not file size, not resolution.
My very first post was a thank you to Rusty's post for his comment about how he had noticed his Resolution setting had been changed from ppi to ppcm. I didn't say anything about printing. In fact, I never even stated what my issue was. I was merely thanking him for sharing information. So, for anyone to tell me that I didn't know what my issue is, that I didn't understand was quite laughable to me. And then the other two posters were almost equally ridiculous, who said that since they didn't experience the same conditions as myself and another person, it couldn't be a programming error.
Trust me, I understand explicitly about resolution, image size, dimensions, file size and how they are all interrelated. Resolution is essentially the density of pixels. (And I'm still used to dpi vs ppi, that's how long I've been working with the concept.) I often help other people understand in whichever mode is most comfortable for them to grasp the knowledge of how to know what size image they need/want to capture and print depending on the types of measurements shown on their equipment used and by whomever they might be working with for finish work.
I have a set process, I have set image sizes, I have an action recorded in Photoshop to shrink my images to 24" x 36" and save them in the proper folder with the proper name and another to shrink them to 8" x 12" and place them in the proper folder with the proper name. I am meticulous, so when the first image imported into Photoshop and it was 18.898" x 28.346", un-cropped, I couldn't figure it out. The file size was still just as large, the resolution was still 72, I hadn't changed any settings in Lightroom or Photoshop, the ONLY thing I had done was install an update. It didn't make sense to me that with the pixel dimensions still being the normal size, all of the sudden the inch dimensions were smaller. And I did need to be able to have the capability for a larger print size if/when I do want to print.
I hope that I'm being clear now. I really was just trying to post a thank you initially. I hadn't expected all of this excess.
I apologize for the troll statement. It wasn't meant for you directly, it was more for the grouping of comments which in my opinion didn't seem to be useful for the discussion and were instead just baiting. I shouldn't have allowed my bad mood to permeate my own comment regardless. I am also sorry for any other statements I made which might have come across wrong. I was trying to be funny with my first comment about programmers, but it might not have come across that way. I hadn't expected the rude and unnecessary comment back which I received, and that's where the trollish comments came from. That's why I only responded to that person once, despite the string of poking posts.

Why the files my program create are created twice each file double ? And why sometimes the files size are too small ?

My program is using Queue of type Uri to create Queue of urls and then i'm using webbrowser to navigate each Uri from the Queue in it's turn and get the url(html) source content and save it to the hard disk.
The problem is sometimes the text files on the hard disk are small like 90KB or 60KB and sometimes they are as they are suppose to be 300KB or 200KB.
This is a button click event where i'm calling two methods:
private void toolStripButton3_Click(object sender, EventArgs e)
GetHtmls();
CheckQueue();
This is the GetHtmls method code:
private Queue<Uri> myUrls = new Queue<Uri>();
private bool isBusy = false;
private void GetHtmls()
for (int i = 1; i < 49; i++)
adrBarTextBox.Text = sourceUrl + i;
targetHtmls = (combinedHtmlsDir + "\\Html" + i + ".txt");
Uri targetUri = new Uri(sourceUrl + i);
myUrls.Enqueue(targetUri);
sourceUrl contain website address: http://www.tapuz.co.il/forums2008/forumpage.aspx?forumid=393&pagenumber=
And i'm adding to it the numbers and create the pages.
And add them to the Queue.
THen the CheckQueue method:
Uri uri;
private void CheckQueue()
if (isBusy)
return; // We're downloading some page right now, don't disturb
isBusy = true; // OK, let's get started
if (myUrls.Count == 0) // No more pages to download, we're done
isBusy = false;
return;
uri = myUrls.Dequeue(); // Get one URL from queue
getCurrentBrowser().Navigate(uri);
It suppose to Navigate to each Uri(html address) in the Queue.
And the browser document completed event:
private void Form1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
// If page loaded completly then do something
int urlnumber = uri.ToString().IndexOf("pagenumber=");
string number = uri.ToString().Substring(urlnumber + 11);
int num = Int32.Parse(number);
targetHtmls = (combinedHtmlsDir + "\\Html" + num + ".txt");
StreamWriter writer = File.CreateText(targetHtmls);
writer.Write(getCurrentBrowser().DocumentText);
writer.Close();
isBusy = false; // We're done
CheckQueue(); // Check next page in queue
In the completed event i'm getting the page number and build the string for the text file then write the html source content to the text file.
In the end i have on my hard disk 48 text files.
The problems are:
1. Sometimes it seems like it's not finishing navigating to the current uri or maybe some other reason maybe server side problem and creating small size files with source content inside but not all the source content. Sometimes the text files size are each
file 99KB or 70KB and sometimes the size of them are about 300KB and 200KB and this is the right sizes 300KB 200KB.
2. The text files on my hard disk suppose to be 48 different files each file should contain the source if the html page of the 48 pages. But on my hard disk the 48 text files are duplicated for some reason.
This is the file on my hard disk:
Some of the files are 205KB 350KB 175KB and some of the files sizes are 85KB 94KB 35KB
Why some of the files it didn't navigated to the end or maybe didn't got all the source ?
And why it's making each second file the same like the one before ? It suppose to create 48 different files but i'm getting two identical files each navigation.

I solved it now.
This is what i did:
It's a bit slow process since i'm waiting for each page to be loaded into the webbrowser but it does the work.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Collections;
using System.IO;
using System.Net;
namespace WindowsFormsApplication1
public partial class Form1 : Form
private string sourceUrl = "http://test.test";
private string htmlsTargetDirectory = "Test Htmls";
private string appDir = Path.GetDirectoryName(@"C:\Users\chocolade1972\AppData\Local\Test_Images\Test Images\Test Htmls");
private string combinedHtmlsDir;
private String targetHtmls;
private int counter = 1;
private StreamWriter w;
private string uri;
private bool htmlloaded = false;
public Form1()
InitializeComponent();
webBrowser1.ScriptErrorsSuppressed = true;
combinedHtmlsDir = Path.Combine(appDir, htmlsTargetDirectory);
if (!Directory.Exists(combinedHtmlsDir))
Directory.CreateDirectory(combinedHtmlsDir);
private void Form1_Load(object sender, EventArgs e)
GetHtmls();
timer1.Enabled = true;
private void GetHtmls()
uri = sourceUrl + counter;
targetHtmls = (combinedHtmlsDir + "\\Html" + counter + ".txt");
webBrowser1.Navigate(uri);
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
if (e.Url.ToString() == uri)
targetHtmls = (combinedHtmlsDir + "\\Html" + counter + ".txt");
htmlloaded = true;
StreamWriter writer = File.CreateText(targetHtmls);
writer.Write(webBrowser1.DocumentText);
writer.Close();
FileInfo fi = new FileInfo(targetHtmls);
var size = fi.Length;
w = new StreamWriter(combinedHtmlsDir + "\\test.txt", true);
w.WriteLine("File Size " + size);
w.Close();
private void timer1_Tick(object sender, EventArgs e)
if (htmlloaded == true)
uri = sourceUrl + counter;
myurls.Add(uri);
webBrowser1.Navigate(uri);
htmlloaded = false;
counter += 1;

Why is the file size increasing when cropping in Photoshop CC?

While cropping a picture the file size is increasing dramatically.
An image 7360 X 4912 px (Image size : 103,4M) after cropping to 60 X 40 cm 300 px, goes up to an image of 18000 X 12000 px (Image size : 618,0 M). And the computer is unable to cope with such a file...
It wasn't like that when I first started to use the program.
I crop the same image using CS5 and the result is an image of 7087 X 4724 px (Image size : 95,8 M) which is normal...
Will aprreciate help...

Thanks for replying. First I didn't have this problem in the beginning. I do the same in CS5 and I can do it with no problem.

Why is the file size very big when I add captive runtime?

I have a game that is 2.56 MB. When I package it up for a captive runtime apk it becomes 12.2 MB. This is very reasonable, but my problem is that when I add this apk on my phone through debugging, the size of the game jumps from 12.2 MB to 30.7 MB! I am using Air 3.9 and I don't understand why it is that big, can anyone help me please!

IPA and APK are .zip files in disguise. Your app is simply unzipping all or a portion of itself when it is installed, depending on OS. For example one of mine is 35MB (APK) and it goes to 50.2MB after install every time.
The captive runtime has little to do with it besides it's just one more compressed item. If you added any other random ~10MB of assets instead of captive runtime, depending on the content you'd end up with around the same size app anyhow.

Why does the file size change when put into an iDVD project? And problems with dual layer discs...

I exported a short video of mine from Final Cut Express and the size of the file came out to 7.3 GB. When I put it into an iDVD project, it says that the file is only 800 MB. I tried just burning it onto a dual layer disc anyway to see if it might still burn at the original file size, but the disc came out unusable for some reason, and obviously hadn't been burned anywhere near full-capacity. So, I tried it again, and the exact same thing happened.
I guess my first question is: why is iDVD changing the size of the file? I want the quality to be the best it can be, so keeping it at 7.3 GB as opposed to 800 MB is rather important.
Secondly, why did the dual layer discs come out unusable? I've burned single layer discs before and they haven't been an issue. Also, I know for a fact that the drive can burn dual layer discs, so that isn't the issue.
Thanks in advance to anyone who can provide me with help on this issue.

LivelyJamesS wrote:
I exported a short video of mine from Final Cut Express and the size of the file came out to 7.3 GB. When I put it into an iDVD project, it says that the file is only 800 MB.
Guessing here but it looks like you edited/exported an SD/DV sequence of about 30 min in FCE. DVD needs to be MPEG-2 so iDVD compresses the original file down to the size that you report.
LivelyJamesS wrote:
I guess my first question is: why is iDVD changing the size of the file? I want the quality to be the best it can be, so keeping it at 7.3 GB as opposed to 800 MB is rather important.
The quality will be what the MPEG-2 compression and the software allow for. MPEG-2 is DVD standard .... there's no way around that.
LivelyJamesS wrote:
Secondly, why did the dual layer discs come out unusable? I've burned single layer discs before and they haven't been an issue. Also, I know for a fact that the drive can burn dual layer discs, so that isn't the issue.
Guessing again but it would seem that you burned a Data DVD instead of a Video DVD which would be unusable by a set-top player. As I said above you can't get around DVD standards.
If by any chance your video was HD originally you can try to go the Blu-Ray route using Roxio Toast or FCS 3 (discontinued) or FCP X. You will also need a Blu-Ray burner.

Why is the exported file size so small?

Hello!
I just spent the last few days watching about three hours of Adobe Premiere Pro CS3 tutorials and almost all five hours of the Adobe Encore CS3 tutorials on Lynda.com with the awesome 30-day trial that I received for purchasing these two programs. I pretty much got to the end of authoring my first DVD with Encore, but the file size is so small that it doesn't even take up the full size of a single-layer DVD and I was expecting to be using double-layer DVDs.
Here's why I didn't post this in the Encore discussion: My two file sizes are 10GB and 8GB. I have them both as single timelines in Premiere Pro and exported them each to Encore. But why does the file size decrease to just over 1GB for each of the files in the Export to Encore option in Premiere Pro CS3?
I begin a brand new project in Premiere Pro, import the 10GB .avi, and then do the Export to Encore with "DVD Double Layer", "Author with Menus", "Entire Sequence", "NTSC High Quality" with the quality level switched from 4 to 5, Video Codec = "MainConcept MPEG Video", 720x480, 29.97 drop frame, Lower, Standard 4:3, VBR, 2 Pass, the default bitrate settings of Minimum Bit Rate = 1.5, Target Bit Rate = 4, Maximum Bit Rate = 7, and then whatever GOP Settings are set to M Frames = 3 and N Frames = 15. Without any video editing at all, it estimates the file size at 1.7GB.
If my goal is to get the file sizes closer to 4GB and 3.5GB, can I fiddle with any of these settings without screwing up the ability for all DVD players to read my disc? I thought it would probably be ideal to have them closer to 7GB and 6GB, and then let Encore downgrade the quality to fit all of the content on the DVD with very little room to spare. But why is there no default to keep the video resolution at the absolute best possible?
Should I be exporting to a Movie instead of exporting to Encore?
Thanks!
Matt

Patrick,
After I installed and registered my software, I received this email twice for both Premiere Pro and Encore, and I would imagine that it would only make sense to receive this same type of bonus for Production Premium:
"Thanks for registering - claim your benefit today.
Adobe Systems Incorporated [[email protected]]
Thank you for purchasing and registering your copy of Adobe Premiere Pro CS3. You now have a wealth of creative tools at your disposal. While taking advantage of online and printed resources we also encourage you to select a complimentary benefit. At Adobe we want you to get the most out of your software it's our commitment to you.
Check out Adobe Bridge Home*, a feature of Adobe Bridge CS3.
Get access to product tips, training videos, product news, and other creative resources all in one place. Simply click the Adobe Bridge icon within any application to get started.
You got it, now get more.
Hypatia Sans Font:
Developed for customers who register their Adobe Creative Suite® 3 product, these unique and stylish fonts were inspired by the 1920s and '30s. Receive Adobe's new type family (a US$169 value) for free.
Lynda.com Training:
Take advantage of a free 30-day Online Training Library® subscription, including in-depth Adobe training in easy-to-use video format.
Classroom in a Book® Series:
Deepen your skills with this series of self-paced training offering step-by-step explanations, time-saving techniques and insider tips. Receive up to a 40% discount on Adobe Press' Classroom in a Book series."
Thanks for the tip, Steven! I will try that now.
- Matt

How can I reduce the file size in Adobe Reader 9?

My wordpress isn't allowing me to upload files larger than 2MB. How do I resize my PDF in Adobe Reader 9 so that it is <2MB?
Thank you very much for the help!

In Acrobat, open a PDF file.
-Choose Document > Reduce File Size.
-Select Acrobat 8.0 And Later for file compatibility, and click OK.
When you choose the compatibility level, be aware that the newer the version of Acrobat that you choose, the smaller the file. If you choose compatibility with Acrobat 9, however, you should be sure that your intended audience does indeed have version 9 installed.
Name the modified file. Click Save to complete the process.
It is always a good idea to save a file using a different name so that you don't overwrite an unmodified file.
Acrobat automatically optimizes your PDF file, a process that may take a minute or two. Any anomalies are displayed in the Conversion Warnings window. If necessary, click OK to close the window.
Minimize the Acrobat window. View the size of the reduced file. The file size is smaller.
You can repeat steps stated above using different compatibility settings to see how they affect file size. note that some settings might actually increase the file size.
PDF Optimizer offers more opportunities to control quality trade-offs.
Choose File > Close to close your file.

When I save a photo as a jpeg in PE 13 the file size is much smaller than with PE 12. Why?

when I save a photo as a jpeg in PE 13 the file size is much smaller than with PE 12. Why?

Are the image all the same size the % files open into a document seems to vary with the number of pixels the image being opened has. Check the Image size.

Why does the Reduced Size PDF command create larger files?

I have been a happy user of Adobe Acrobat vers. 7 until Adobe ceased the support of that version and I was unable to print and do other activities since my last Mac OS vers.10.6.8 update, so I was forced to upgrade to Adobe's Acrobat's X latest version 10.0.0. I had hope to be able to produce Adobe Acrobat 3D files but found out later that Adobe does not do that anymore and I would have to buy it as a plugin from Tetra 4D for another $399.00, oh well. I then wanted to reduce the file size of some larger pdfs I had edited. It took a while to locate the command location, now in File>Save>Reduced SizePDF, once I activated the command on my file it actually increased its size!! Why did this happen? Should I continue to use my disabled, Adobe unsupported vers 7 to get the superior performance I once had? This issue was mentioned in an earlier thread that started out as to where to locate this command but the resultant larger file issue remained unanswered. Currently unhappy on my purchase. Will Adobe offer a free upgrade to fix this?

I agree with Peter. Use Pages '09, but keep a document migration strategy present. When you create a Pages document in Pages '09, export it to Word .doc too. Export any current content in Pages v5.2.2, and then stop using it. That means no double-clicked documents.
Pages v5 is not an evolution of Pages '09 — it is an incomplete rewrite, and uses a different, internal document architecture than did Pages '09. This internal architecture is to blame for the export translation bloat into Word's different document architecture. It does not matter whether you type a single character, or multiple pages, you will get about a 500Kb .docx file.
Opening, and resaving this monster .docx file in MS Word in Office for Mac 2011, LibreOffice, or TextEdit will result in a very small .docx footprint.

Why Are Lightroom File Sizes Smaller Than Elements Equivalents?

I have been struggling to get good quality thumbnail sized images at small enough file sizes for a website. The only problem is that the versions I have done through Lightroom via the Web Module using the Flash template, will only allow a maximum width size of 191 pixels, whereas I'm looking to achieve 250 pixels wide. Doing it through Elements image resize box gets me the size I want, but for a decent quality, the file size is much larger.
Out of curiosity and for comparison, I made the Elements versions the same dimensions as the Lightroom ones. In order for the file sizes of the Elements ones to come even close and yet not as small as the Lightroom versions, I had to reduce the Jpeg quality to zero. This rendered them unusable.
I can't understand why two related applications doing exactly the same thing can differ so wildly. Can someone tell me what is going on?

Hmmm??
Not To Sure??
But I will try to find out..
Keep you posted about that.
Phillip

I have a few hundred duplicates in my iPhoto library, but the file sizes are different. So one is 1.3mb and one is 567kb. I want to delete the smaller ones, but short of comparing each duplicate, is there a way to do this?

I have a few hundred duplicates in my iPhoto library, but the file sizes are different. So one is 1.3mb and one is 567kb. I want to delete the smaller ones, but short of comparing each duplicate, is there a way to do this? I've been looking at Duplicate Annhilator but I don't think it can do it.
Thanks!

I just ran a test with iPhoto Library Manager, Duplicate Annihilator, iPhoto Duplicate Cleaner, Duplifinder and Photodedupo. I imported a folder of 5 photos into a test library 3 times, allowing iPhoto to import duplicates. I then ran the 5 photos thru resizer to reduce their jpeg compression but all other aspects of the file the same.
None of the duplicate removal apps found set that was reduced in the file resizer. That's probably due to the fact that the file creation date was being used as a criteria and the resized photo would have a different file creation date even though the Image Capture date was the same.
They all found the 3 regular duplicates and some of them would mark two and leave the 3rd unmarked. iPhoto Duplicate Cleaner can sort the found duplicates by file size but if the file was edited to get the reduced file size it might not be found as it would have a different file creation/modification date.
iPhoto Library Manage was able to find all duplicates and mark them as such if the file names were the same the the filename option was selected. Otherwise it also missed the modified, resized version. It allowed one to select the one photo to save before going to work on the library.
So if a photo has been reduced in image quality or pixel size it will not be considered a duplicate.
OT

How can I keep the file size small when I render a .mov file to video in PS entended CS4?

Hi,
I haven't worked with video in Photoshop before and I am having the following issue:
I imported a .mov file into photoshop. I trimmed the file by moving the start and finish points to the relevant points on the timeline. I then cropped the image to get rid of unwanted footage on the edge of the screen. I then selected export - render video. On the panel I chose to select only "currently selected frames" as the range and I chose "Quick Time Movie" as the file type. When I check the properties of my newly rendered movie the file size has increased by several times. The file sizes are now much too large.
I know that I must need to alter some of the render settings but having tried altering many of the settings the result is always the same - a very large file size that is much bigger than my oringinal file.
If anyone can let me know how I can carry out a simple crop & trim on a .mov file and end up with a smaller more compact file after rendering the video I would really appreciate it. Thanks in advance!

Hi Marion,
Thanks very much for your message. I have downloaded that program and it's definitely handy for examining the details of the original file. You mentioned in your message about not having to recode the file - The file I'm editing is originally from a Q3 Zoom video recorder and I can use their in-built software (handyware) to trim the file - this doesn't recode the file and so the file size just reduces by the required amount. Unfortunately there is no facility to crop the file with this software - I've looked for other software that would allow cropping without having to recode the file but I haven't found anything suitable for a simple procudure like this - do you know of any software that allows you to crop a file without recoding? Thanks.

When converting a .pptx file of 6MB to .pdf, the file size ballooned to 25MB. The original file was created on a PC. What happened? Why? How to fix? Thx.

When converting a .pptx file of 6MB to .pdf, the file size ballooned to 25MB. The original file was created on a PC. What happened? Why? How to fix? Thx.

gssharpe wrote:
What happened?
Nothing much. Different formats.
How to fix?
Try editing the original file. Resample pics to a lower resolution, check out other graphics, check table borders (eliminate any dotted lines or borders), check font usage. When generating PDF, try Save As (instead of Print > Save As), although I don't expect that'll make much difference.
Next, open the PDF in Preview, choose File > Save As, choose Format: PDF, Quartz Filterz: Reduce File Size. If that isn't enough, you can use ColorSync Utility to duplicate the Reduce File Size filter, and then edit it for a more aggressive size reduction. But keep in mind that size reduction means lower quality.

Why is the file size so small?

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