Learn tips to make PDFs on your website SEO friendly. O2 Digital is one of the best SEO agencies in Australia, which offers SEO-friendly PDF design services. Portable Document Format or PDF is one of the favoured formats today to publish reports, studies, survey results, guides and tutorials, manuals, etc. Businesses have started to showcase relevant documents and information in the PDF format on their website to be used as a resource for visitors/customers. In any case, making PDFs available on your website is one thing and making them SEO-friendly is another.