The link to the PDF in GitHub&#x27;s web interface crashed my tab in iPad Safari; this raw link works though: <a href="https:&#x2F;&#x2F;raw.githubusercontent.com&#x2F;joearms&#x2F;crypto_tutorial&#x2F;master&#x2F;crypto_tutorial.pdf" rel="nofollow">https:&#x2F;&#x2F;raw.githubusercontent.com&#x2F;joearms&#x2F;crypto_tutorial&#x2F;ma...</a> .