Key SEO tools to power a content marketing campaign.
2. Google Keyword Planner
3. Google Trends
Using Google Trends, you can also create a yearly editorial calendar for your content marketing campaign.
While it is not completely advisable to base your content on trends, Google Trends is a great way to discover what people are talking about in your niche market.
4. Ahrefs Content Explorer
5. Google Analytics
Google Analytics helps you measure the ROI of your content. But beyond that, you can use Google Analytics for nearly every aspect of content marketing – brainstorming/idea generation, targeting, optimization, testing etc.