Graphical Guide on IMGUR:
https://imgur.com/a/XKCo7mW
Step 1: Open the Fixed Layout EPUB with Calibre's integrated E-Book Viewer
At least in my case, the book had a "small text problem", which made it uncomfortable to read, and if i zoomed-in, the text would end looking pretty weird
Step 2: Use the Printing option, in order to get a .PDF file
This .PDF file will be pretty nice and zoomable, however for some reason the resulting file will have big, enormous white margins, so we have to find a way to remove these
Step 3: Buy a copy of ABBY FineReader 15 (or search for a equivalent open source/freeware option) and install it. Then, look for the program on the start menu
Step 4: Click "Open PDF Document"
STEP 5: Open the PDF File
Step 6: Look for the "Crop" tool. Select the real page's area, and choose the option to crop all pages at once
Step 7: Save the file to a new Searchable PDF file
Step 8: Admire the Final Result. The text looks way bigger than on the Fixed Layout EPUB File, plus the PDF is perfectly zoomable and searchable!
