Many people search for “ISO 9000 PDF”, “ISO 9001 PDF”, or even “ISO PDF”. They are usually looking to purchase a copy of the ISO 9001:2015 standard in electronic format. People also search for “ISO 9000 Free” or “FREE ISO 9001”, but these standards are not free.
Per ISO: ISO standards cost money to develop, publish and distribute. Someone has to pay. The current system whereby users are requested to pay for the standards they use, not only sustains the development process but also, very importantly, ensures that the balance of independent vs. government, private vs. public interests can be maintained.