PageSpeed Insights and GTMetrix Score Reading Is Difficult
I'm a relatively new developer. Last year I built a CMS in plain PHP, HTML, CSS, and JS, since that was what my boss of the startup company wanted during that time. Optimizing for page speed and PSI was easy because I know where to look since I built the cms and the website. Last November, I found a new job, fairly known to create websites for real estate agents and/or companies. They use wordpress, and a bunch of different plugins related to Real Estate which I'm very not familiar with. I receive daily tasks from updating the contact forms and plugins, to updating layouts and modules of different sites. However, one of my biggest pain points is optimizing for PSI and GTM. In a day if i get one of those kind of task, I feel like giving up. I know it's mainly because I don't fully understand what the score says or what the errors are saying whenever I run a website on those tools.
It feels to me like when I change something on a wordpress site that I'm working on, it's never consistent if what I changed was good or bad. For example, I changed one image, and run both tools. at first they might give me a good score, then wait for a bit to run it again, boom, bad score. I tried looking up for YT videos to see If there's someone or something I can learn from optimizing a wordpress site, but all i get is "install this plugin, install that plugin"
I need advice. I tried reading google's documentation on it and its kinda overwhelming. I'm a little bit frustrated at myself at this point mainly because when I'm handed these optimizing tasks, It feels like literally don't know anything about web development.
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