WHY IS THIS HAPPENING?
Some of the more common reasons can be that the file may have images with very high resolution, graphics or images that go beyong the limits of a page or problems with the PDF structure itself.
HOW CAN WE PREVENT THIS SITUATION?
The easiest way to avoid having processing issues is starting the process with a file that has no conflicting elements in it. For this, in the design stage you can create a file without the elements mentioned in the previous point.
If you are not sure if the PDF file is Ok you can create a new copy following the process described below. Please notice we will assume Adobe InDesign is the program used for the creation of the publication because it is the most common option but a similar process should be available in other programs.
1- When the document is ready in InDesign, preferably avoiding all conflicting elements, export it to a file with the PDF/X 2001 standard. This will generally "clean" the document.
2- Open the PDF/X 2001 file using ADOBE PRO and converted to the PDF/A-1a standard. During this process Adbe will report any errors it finds in the file but will normally be able to complete the conversion. If it can't, corrections must be implemented going back to InDesign.
3- Use the file successfuly converted to PDF/A-1a without errors to upload to your store. Files converted with errors might work anyway but it cannot be guaranteed.
HOW CAN I IMPROVE THE CHANCES OF MY PDF FILE BEING SUCCESFULLY UPLOADED WITHOUT FOLLOWING THE PREVIOUS PROCESS?
It is important to notice that the use of this tools may not solve the processing errors and might affect the quality of the resulting document.
Tools available online to optimize PDF files include:
If the problem persists and the file continues processing , we must look into things that are directly associated with the actual design of the file.
1. Images: if the publication has many images and/or complex graphics with high resolution , we must optimize them so they are converted in Map Bits in RGB .
2. Shadows: if there is any shadowing on the images or letters, we must must optimize them so they are converted in Map Bits in RGB.
We hope you find this tutorial simple, if you have any questions you can email us at [email protected]