MELLOW HUB · FREE TOOL

Free hashtag generator for Instagram, TikTok and YouTube

Describe your post and get hashtag sets for Instagram, TikTok, YouTube, LinkedIn, X and more, counted against each network’s limit. Free, no sign-up.

By Mellow · Updated

Hashtag generator

Example (written by hand, not by the generator)

  • #slowmorning #lisboncafe #sundayreset

  • #coffeetime #lisbonlife #cafehopping #slowliving

  • #sundaymood #pasteldenata #portugaltravel

The limits it counts against

NetworkLimitWhere it comes from
Instagram5Instagram Help Center: Use hashtags on Instagram
read 7 October 2026
Threads1Instagram Help Center: Tag a topic in your post on Threads
read 7 October 2026
YouTube60YouTube Help: Find playlists & videos using hashtags
read 7 October 2026
XNo limit; no more than 2 recommendedX Help Center: How to use hashtags
read 7 October 2026
TikTokNo published limitTikTok Help Center: Making a post
read 7 October 2026
LinkedInNo published limitLinkedIn Help: Post and share updates
read 7 October 2026
FacebookNo published limitFacebook Help Center: How do I use hashtags on Facebook?
read 7 October 2026
PinterestNo published limitPinterest Help: Review Pin specs
read 7 October 2026

Each figure is the network’s own, from its help or developer pages. The count under a result is on the network’s own scale, not a plain character count where the two differ.

What this generator does, and what it does not

  • It writes options, not promises. It is told to promise no result, to state no figure about reach or popularity, and to invent no fact about you. An option that does is dropped.
  • It does not post. Nothing here connects to an account. You copy a result and publish it yourself, or schedule it in Hub.
  • It does not know you. It sees only what you type. Add the detail that is true of you; the details are what a reader keeps.
  • It is free and needs no account. Each browser has a small daily allowance, shown above the results. The counters and checkers on the other free tools have no allowance: they run in your browser.

Questions

How many hashtags should I use?

It depends on the network, and some publish no number. Instagram: 5; Threads: 1; YouTube: 60; X: no limit; no more than 2 recommended. The table above gives the network’s own page for each figure and the day it was read.

Will these hashtags make my post reach more people?

No tool can promise that, and this one does not. The generator suggests tags that describe your post; whether a network shows it to more people is the network’s decision.

Can I paste the result straight into a post?

Yes. Each option has its own copy button, and the number under it counts the tags the way the network counts them. Check each one first: a tag can mean something you did not intend.

Why do I sometimes get fewer than five options?

An option a network would not accept, or one that promises results, is dropped rather than trimmed to fit. A page that shows two options is showing the two that passed.

Is the text written by AI, and is anything I type kept?

Yes, it is written by an AI model, so read it before you post and change what is not true of you. Your description is sent to the model to write the options. Mellow keeps no account for this tool; it keeps a one-way hash of the question with the answer for seven days so the same question is not paid for twice. Each browser has a small daily allowance, shown on the page.

Schedule what you write in Mellow Hub

Copy a result, then schedule it with the rest of your posts. Mellow Hub publishes one post to Instagram, TikTok, YouTube, X, LinkedIn, Threads, Bluesky, Pinterest and Facebook and checks each network’s rules before anything is sent.

Schedule on Instagram and TikTok

Read how many hashtags Instagram allows

This tool is free and needs no account. Mellow Hub is paid, after a 7-day free trial, and publishes only what you, or an assistant you have authorised, send or schedule.

Answers that go with this tool

More free tools

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  • YouTube thumbnail tester: See a thumbnail in YouTube’s home feed, search and sidebar at their real sizes, then export it at 1280×720 under 2 MB.
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  • Social media character counter: Count one post against every network’s limit at once, with X’s weighted count and Bluesky’s graphemes.
  • Social media post checker: Check caption, title and media count against Mellow Hub’s input rules for each destination.
  • Reels and Shorts safe zone checker: See where Instagram Reels and YouTube Shorts cover a vertical video with their buttons and captions, from the figures Meta and Google publish, and download the template.
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  • Reels and Shorts cover maker: Pick a frame from your video, add a title, see how the cover sits in the profile grid and export it at 1080 × 1920.
  • Social media image resizer: Crop one picture to every network’s post, story and cover sizes at once and download them together.
  • Hashtag counter: Count the hashtags and mentions in a caption against each network’s limit, drop duplicates and copy a clean set.
  • Instagram font generator: Turn words into bold, italic, script and other Unicode letter styles for an Instagram bio or caption, and see what styled letters cost screen readers, search and hashtags.
  • Caption generator: Describe a post, pick a network and a tone, and get captions counted against that network’s limit.
  • Tweet generator: Describe what you want to say and get posts for X, each counted the way X counts, so none is over the limit.
  • YouTube title generator: Describe a video and get title options counted against YouTube’s title limit.
  • YouTube description generator: Describe a video and get description drafts counted against YouTube’s description limit.
  • LinkedIn post generator: Describe what you want to share and get LinkedIn post drafts counted against LinkedIn’s limit.

All free tools · Answers about posting and scheduling

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