I have uploaded a logo (200x50) for invoices in the admin (Magento 2.2.5) but it is not showing in the pdf.
I have cleared the cache and reindexed but no luck.
Does anyone know why the logo is not showing?
check your images path and PDF templates. Also, the format of a file is important. I need more details for help you: PDF sample, image what's uploaded and etc.
The main strategy for solving 90% Magento issues is:
Without any details answer may be too abstract.