#How to reduce a file size to email how to#
#How to reduce a file size to email pdf#
#How to reduce a file size to email install#
#How to reduce a file size to email zip file#
#How to reduce a file size to email download#

Download them, unzip to folder /System/Library/Filters and you are ready to go (no need to restart macOS or even Preview application, just select Export command one more time).

#How to reduce a file size to email zip file#

I prepared a zip file with those two custom Preview filters we just created. Ping me in comments if there is something interesting you found. The question is do you have time for this. Sure thing you can experiment with the parameters and get different, even better results. Save fiter settings and paste new version. Set Compression Quality to 0.4, ImageScaleFactor to 0.9, ImageSizeMax to 1504. Let's alter our filter one more time to get smaller size. There is no visible difference!Р”Р„t the beginning of this guide we set size limit to 25MB.

#How to reduce a file size to email pdf#

Not too bad, let's compare the same piece of the original PDF side by side. New filter produced a 27.4MB file (remember, original file size was ~200MB and compressed with original filter 2.8MB). Nice, here is our custom filter!Р”Р„dd -v3 to the end of new file and press Save. Export as usual and check Quartz Filter dropdown list. Let's find out if it is better than the old one. Now we are ready to apply the new custom filter. Do you remember I told that you would need to have admin's permissions? When you paste the new filter file you will be asked to enter the admin's password. Copy this file to /System/Library/Filters folder. Change it to our new file name My Reduce File Size. It is used for the name inside Quartz Filter list when exporting. This is a limit for minimum width and height. It should be enought for viewing on retina displays and not so bad for printing. So your images width and height can't be larger than 512 pixels.

That means that each picture will be scaled down by 50%. As you can see it is pretty self-explanatory.Р”В¬ompression Quality is set to 0.0 by default (!), which means it is the worst possible value. As the content is just a text choose TextEdit.app and click Open. In the next window you need to choose which program to use to open the file. Right-click on it and select Open With РІвЂ вЂ™ Other. Now it is time to change the content of the filter file. I added My at the beginning of the filename. Click on it to select and press Enter to rename it. Go to your folder with PDF files via Finder, right-click on empty space and select Paste Item. To copy this file, right-click on it and select Copy 'Reduce File Size.qfilter'. Now we need to make a copy of the original preset, alter & rename it, and copy back. Each file describes compression and scale parameters in XML format. This magic folder stores all Quartz Filter presets (including our Reduce File Size we just tried) in separate files. Type in path /System/Library/Filters and click Go. Open Finder and press Shift + Command + G or go to Finder's menu and select Go РІвЂ вЂ™ Go to Folder. Please note, that you need administrator permissions to do this trick. Build-in preset is not usable in our case, but, luckily, we can fix this in a few minutes. A picture is worth a thousand words!Р”Р„fter photos are pixelated, the sharpness reduced, you can clearly see compression artifacts. Here is a visual comparison of the same PDF before and after optimization. Can you imagine how bad they are after our manipulations? Almost 70 times smaller size. I was amazed by the results! How is this possible? The thing is that Preview increased compression rate and scaled down all the images stored inside the document. Now go to the saved file and check the size. Now click on Quartz Filter and select Reduce File Size option. Set new file name for your optimized file. Go to File РІвЂ вЂ™ Export.Р”В®xport As window appears. Double click on your PDF to open it using Preview. The quality will be horrible, but let's try it. Let's optimize our file using build-in preset.

Let's make it possible to send it via email. Right click on the file, then select Get Info from context menu.

Also, I checked the file size before optimization. I made separate folder for my PDF experiments.

Compare reduced PDF to the original one.

If you are an expert user, go to the last part of this page with a download link and short instruction. This tutorial is for very beginners and includes step by step instruction for each step. The good news is that macOS is a pretty flexible system and it allows to create your own presets for saving PDF files. Preview allows to save opened documents in different formats and even to optimize PDF files, but the problem is that the quality of the output PDF is pretty poor. We will use build-in application called Preview, which is used for viewing PDF documents on macOS.

#How to reduce a file size to email install#

The great thing is that you don't need to install any additional software. If there is only text, that is not going to work.

#How to reduce a file size to email how to#

In this short guide I will show you how to dramatically decrease PDF file size in case there are a lot of photos inside.