If you have large jpegs and other files embedded in the document, you should see considerable file size reductions. In that example alone I was above to reduce the file size by 85%, and that is using a document that uses only vector images and assets. In the video above, at the end I compare the reduced PDF with a PDF I saved with default options set to maximum quality, wherever I could. Step 6 – If you get the following message reminding you that you have deselected editing capabilities, simply press OK. Step 5 – This step is optional, but if you are sending the file to to print it is good practice to check ‘use document bleed settings’ (if they have been set up) and select ‘trim marks’ under ‘all printer’s marks’. Step 4 – Under the ‘compression’ tab, under ‘color bitmap images’ set ‘average downsampling to 300ppi for images above 300ppi’, set compression to ‘automatic (jpeg)’ and set the image quality to ‘high’ or ‘maximum’, so that you still have a high quality print. ai file, so you should use that to make changes) and check on ‘optimize for fast web view’. Under ‘general’, check off ‘preserve Illustrator editing capabilities’ (remember, you’re keeping the original. Step 3 – When the ‘Save Adobe PDF’ box appears, there are a few options we can use to reduce file size. Choose the save location and type your file name, then click ‘save’. Step 2 – When the ‘save as’ box appears, set your format to ‘Adobe PDF’ and select ‘all pages’ (unless you want to export part of the document, in which case select the ‘range’ option and your page range e.g. Step 1 – With your document open, check that you are ready for export by double-checking the page size and color mode (CMYK for print). If you want to watch along as I demonstrate some of these techniques on a simple 4-page document, feel free to watch the video tutorial below.

How to reduce image size in illustrator