JSON formatter

An online tool that formats, validates, and beautifies JSON data for developers and anyone working with structured data. The site was built as a straightforward, no-frills utility solving a simple but frequent developer pain point, then grown almost entirely through SEO to reach 3.4 million visits per month. Monetized purely through Google AdSense, the site generates an estimated $100,000 per year in ad revenue — proving that a single well-executed tool page, paired with strong search engine optimization, can become a highly profitable solo project with minimal ongoing maintenance.