Hashtag Generator

Hashtag generator turns each line of input into a clean hashtag — words joined together, punctuation removed, # prepended. Mixed case is preserved (Instagram, X/Twitter, and TikTok all support and respect case in hashtags for readability).

Paste a list of phrases (one per line); get back a single space-separated hashtag block ready to drop into a caption or bio.

What people generate this for

Instagram caption hashtag bundles

Instagram allows up to 30 hashtags per post. Brainstorm phrases line-by-line, generate, paste at the bottom of your caption.

X / Twitter post tags

Different etiquette — usually 1–3 hashtags inline. Generate one at a time and integrate into the sentence rather than appending.

TikTok video tags

TikTok's algorithm leans heavily on hashtags. Brainstorm 8–10 relevant phrases, generate, paste in the caption.

LinkedIn post discoverability

LinkedIn supports hashtags for content discovery. 3–5 strong hashtags are conventional.

Hashtag campaigns

Building a campaign hashtag? Generate to make sure your candidate phrase is hashtag-safe (no spaces, no punctuation conflicts).

How the randomness works

The Hashtag Generator processes input line-by-line using a simple transformation pipeline. For each line, it first trims leading and trailing whitespace, then removes all punctuation characters (periods, commas, apostrophes, hyphens, etc.) using a regex replacement that retains only letters (A-Z, a-z), digits (0-9), and underscores. Internal spaces are removed by joining non-space characters. The resulting string, with mixed case preserved, is prepended with a # symbol. The tool handles multiple consecutive spaces by collapsing them during the join step. Output lines are concatenated with a single space separator, producing a clean block of hashtags ready for social media captions.

How to use this generator

1. Paste your list of phrases, one per line, into the input field.
2. Click the 'Generate Hashtags' button.
3. Copy the resulting hashtag string from the output box.
4. Paste the hashtags into your social media caption or bio.

Behavior on tricky inputs

Empty lines

Empty lines produce no hashtag and are silently skipped, so the output length matches the number of non-empty input lines.

Lines with only punctuation

If a line contains only punctuation, it becomes an empty string after removal, so the tool outputs an empty hashtag (#) — avoid such input.

Lines with leading/trailing spaces

Extra spaces are trimmed before processing, so they do not affect the hashtag.

Non-ASCII characters

Characters like emoji or accented letters are removed because they fall outside the allowed Unicode categories (letters/digits/underscore), which may break desired hashtags.

Tips for getting better output

• For Instagram optimization, keep each hashtag under 30 characters — trim your phrases accordingly.
• Mix case to improve readability: #NYCfoodscene is easier to read than #nycfoodscene.
• Avoid special characters like & or @ — they will be stripped, potentially changing meaning.
• Use the tool to generate hashtags from a list of keywords for SEO-friendly social media posts.

vs other random sources

The Hashtag Generator offers a quick one-click solution, but alternative methods can be more flexible.

A bit of history

The concept of hashtags originated on Twitter in August 2007, when product designer Chris Messina proposed using the # symbol to group related tweets. His suggestion evolved into a universal social media convention for categorizing content. This tool modernizes that idea by automatically converting phrases into the standardized hashtag format, preserving the mixed-case style that platforms like Instagram and X support for readability.