I built 100+ free browser tools (PDF, image, SEO, calculators) — here's what I learned

I'm a solo developer. Over the last months I've been building TinySEOTool — a free collection of 100+ online tools that run without signup. What's inside PDF tools: compress, merge, split, remove pages, image to PDF Image tools: resize, compress to a target size in KB, convert formats SEO tools: plagiarism checker, article rewriter, hashtag and YouTube tag generators Calculators: age calculator, unit converter, pizza ingredient calculator Most tools run in the browser, so your files don't have to be uploaded to a server. 3 things I learned Specific beats generic. "Resize photo for a government job form" is a real search. "Image resizer" is a fight with giant sites. I now build narrow tool pages (exam photo, visa photo size) in addition to the general tools. Every tool page needs real content. A tool alone is thin. I'm rewriting each page with an honest "About" section and a short FAQ based on what the tool actually does — no filler. Don't load everything on the homepage. With 100+ tools, I show the 14 most popular per category and load the rest when someone opens that category. It keeps the page light as I add more. What's next More calculators and converters, plus better mobile speed (only ~29% of my sessions are mobile, which tells me I have work to do). If you try it, I'd love to hear which tool is missing or broken: tinyseotool.com What's the one small tool you wish existed? Drop it in the comments and I'll try to build it.