Backlink Checker

It's great for spotting patterns. You can see which pages on your site attract the most links, what anchor text people actually use, and whether your competitors are getting links from sites you've never heard of. The best tools also show link quality metrics — trust flow, domain authority, whatever flavor your tool uses. That helps you prioritize. I've found that the "new lost" or "new gained" filters are gold for catching changes week over week. Also good for finding broken backlinks on other sites that you could replace with your own content.

They're terrible at giving you a complete picture. Every tool has a different index size and crawl frequency, so you'll see different numbers in Semrush vs Ahrefs vs Moz. I've had cases where one tool shows 500 backlinks and another shows 50 for the same domain. That's not a bug — it's just how the web works. Also, most tools struggle with nofollow links — they show them, but the SEO value is debatable. And they're useless for link quality judgment beyond the metric. A high authority score doesn't mean the link is relevant or will drive traffic.

If you're on a budget, start with Google Search Console — it's free and shows what Google actually sees. For deeper analysis, Semrush and Ahrefs are the heavy hitters, but they're pricey. Moz Link Explorer has a free tier that's decent for quick checks. Majestic is worth a look if you care about trust flow metrics. I've also used Ubersuggest for basic competitor scans, but the data is thinner. My honest take: don't pay for a tool unless you're doing link building regularly. For occasional checks, the free stuff plus Search Console is enough.