Hello dear experts, I'm an SEO consultant (new), I don't have too much experience in search engine optimization. I have done only three projects. Now I got an order from the local buyer for do on page optimization. But the problem is the buyer ask me, from where I have to start his task. 1. Fix w3c error or 2. Increase page speed inside? Can you please recommend me which answer should I give them? Number 1 or 2 ? Before I didn't get any question like this. Please help me dear experts. Thanks in advance.