How to change the logo display size on an invoice in PrestaShop

Step 1: Login to the cPanel account.
Step 2: Scroll down the list of categories until and find the one named Files. From there, you will see an icon named File Manager. Click that icon.
Step 3: Use the dropdown at the bottom entitled Document Root For and find the closest location for your PrestaShop store.
Step 4: Once in the file manager, navigate to your Prestashop store root folder if needed. If you are already there, look for the folder named pdf and double-click it to enter it.
Step 5: Here you will see a list of files related to the construction of the pdf templates. Look for the header.tpl file. Highlight the folder by clicking on it once. From there, select the Code Editor tool from the row of icons at the top of the page. You can also access the editors by right-clicking on the file and selecting the editor from the menu that appears.
Step 6: Once the file editor comes up, look for the code on or around line 30 and Alter the code using division “/” or multiplication “*” of the height and width parameters.
Step 7: nce you have decided the correct size and adjusted the code, click the Save Changes button in the upper right corner of the screen.