How We Research Hashtag Rules

Hashtag rules are easy to get wrong because they change quietly and old advice lives on for years. This page explains how Hashtagr Editorial checks what we publish.

Where do the facts come from?

Official sources first: platform help centers, developer documentation and announcements; reputable reporting only when a platform has not published the rule.

For example, YouTube's 60-hashtag rule comes from YouTube Help, and Threads' one-topic-tag rule from Meta's developer documentation. TikTok's five-hashtag limit has not been published by TikTok, so we cite reporting from August 2025 and say plainly that it is app behavior, not a documented policy.

Some help centers block automated readers. When we cannot read a page directly, we say so in the sources and rely on reputable coverage that quotes it.

How do we label time-sensitive facts?

Every guide shows the date it was last checked, and platform-specific numbers are written "as of" that date.

If you see a rule that no longer matches the app, please email contact@hashtagr.co with a link, and we will recheck it.

What do we never publish?

We never publish invented statistics, fake reviews or testimonials, made-up experts, trending-hashtag lists or search-volume numbers.

We have no access to platform data and do not scrape platforms, so we cannot know how many people use a tag. Tools that claim to know usually estimate. We would rather point you to the platform's own search.

How do the tools work?

Every tool is plain JavaScript that runs in your browser, using rules described on the tool's page.

The word splitting in the formatter and readability checker uses a built-in list of common English words. The counter follows X's published character-weighting rules and Meta's description of Threads' emoji counting. The tools' logic is covered by automated tests before each release.

Corrections

When we fix a mistake, we update the guide and its date. Significant corrections are noted in the guide itself.