How to optimize multi-page EV specification PDF guides for faster web loading in Acrobat?

Question

Hello Adobe Acrobat community!I am currently working on compiling downloadable spec sheets and technical comparison reports for my electric vehicle resource project, goelectrichub.com.My main workflow involves creating data charts and infographics, and then combining them into comprehensive PDF guides for our readers. However, I’ve hit a bit of a roadblock with file optimization. Because these reports contain multiple high-resolution technical charts, the final PDF size ends up being quite large, which slows down direct browser viewing and downloading speeds.I want to ensure that readers can easily download and read these specs without losing the clarity of the fine text and gridlines in the charts.Could anyone share their recommended workflow or best practices within Adobe Acrobat for optimizing and compressing image-heavy technical documents while maintaining crisp visual quality? Any advice on reducing file size effectively would be greatly appreciated!

Dave Creamer of IDEAS · Answer

For images, the main issue is resolution and compression. If you don’t have access to the original files that made the PDF, you can use the PDF Optimizer in Acrobat Pro. Use the “Audit space usage...” to see what is taking up the PDFs space. When combining PDFs, sometimes just saving as a Reduced Size can save a lot of space.

You will have two categories of images: color/grayscale and line art (not to be confused with vector art):

Color/grayscale images only need about 150-300 ppi. (I use 225 as a midpoint for laser printing and commercial printing.) Usually a JPEG compression at high quality works.
Line art (aka black-and-white or Photoshop’s Bitmap mode) needs much more resolution, about 1200 ppi, and a lossless compress method.

When using the PDF Optimizer, check the Discard settings too. Sometimes they can bulk up a file.

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