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Hashtag Generator
Generate hashtags for any social platform with AI
Generating needs a PostNext account. New accounts start with a 7-day free trial that asks for a card; cancel before it ends to keep the free plan, which includes AI credits every month.
Check your hashtags for free
Paste a caption or a list of hashtags. The check runs in your browser: no account and no AI.
Multi-Platform Support
Instant Results
All Platforms
Step 1: Enter Your Topic
Step 2: Select Platform
Step 3: Generate & Use
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Universal Hashtag Generator FAQ
Does this work for all social platforms?
Yes. It suggests hashtags for Instagram, TikTok, X, LinkedIn, Facebook, Pinterest and YouTube, following each platform's published limits. The checker on this page covers Threads too.
Are hashtags different for each platform?
Yes. Each platform treats hashtags differently: Instagram allows at most 5 per post since December 2025, X works best with 1 to 3, and LinkedIn with 3 to 5. Our AI adapts the set to the platform you pick.
How many hashtags should I use?
It depends on the platform. Instagram allows up to 5 hashtags per post (since December 2025). YouTube shows up to 3 by the title and ignores every hashtag on a video with more than 60, so we suggest no more than 15. For X we recommend 1 to 3, for LinkedIn and TikTok 3 to 5, for Facebook 1 to 3 and for Pinterest 2 to 5. The count options adjust to the platform you select.
Should I use the same hashtags everywhere?
Not as one block. Each network treats hashtags differently: Instagram allows 5 per post, X readers expect 1 or 2, and a tag that works on TikTok can mean little on LinkedIn. Keep the tags that fit each network.
What makes hashtags effective?
They describe the post, are specific enough to reach people who care about the topic, mix a broad tag or two with niche ones, and suit the platform. No tool can promise engagement: try a few sets and keep what works for your account.
Can I generate niche hashtags?
Yes! Select the niche or specific style option to get targeted hashtags that reach highly engaged audiences in your topic area. Niche hashtags often outperform broad ones because they connect you with users actively interested in that specific subject matter.
Do trending hashtags help?
Only when the post really belongs in that conversation. The AI has no live trend data, so check a trending tag on the platform before you use it. A tag that does not fit the post brings viewers who scroll past.
Is there a limit to hashtags I can generate?
Generating needs a PostNext account, which includes monthly AI credits. In the app you can also save sets as hashtag groups and add them from the composer. The hashtag checker on this page is free and works in your browser.