No tool can honestly promise that. Hashtags mainly help platforms understand what your post is about and show it to people browsing that topic. A relevant set of hashtags supports discovery, but your content, timing and engagement matter far more than any tag list.

It depends on the platform. Instagram allows up to 30 and a focused set of 10–25 relevant tags usually works well. On Facebook and LinkedIn, 3–5 targeted hashtags are typically enough, and on YouTube 3–5 in the description plus good tags in the tags field is a sensible approach. Relevance beats quantity every time.

No — and be careful of free tools that claim to. Live hashtag data lives inside each platform's private systems, and no free browser tool has access to it. This generator builds your set from your topic plus established evergreen tag sets that communities consistently use, which is the honest, useful approach for a free tool.

You can, but platforms prefer variety and relevance. Regenerate with slightly different topics — for example "gym workout" one day and "home workout" the next — so each post gets a set that matches its actual content.

Yes. There is no sign-up, no daily limit and no watermark. The tool runs entirely in your browser, so it costs nothing to use as often as you like.