YouTube SEO Keywords: The 2026 Guide (Free Tool Inside)

YouTube SEO keywords aren't web SEO keywords. Here's how to research, score, and place them — free.

By Saboor Tahir·9 min·2026-05-19

Web keywords vs YouTube keywords

Web searchers read. YouTube searchers watch. The intent words shift: "how to fix" beats "best fix", "explained" beats "definition", "tutorial" beats "guide". A purpose-built YouTube SEO strategist thinks in video intent first.

Stop borrowing your blog's keywords for your video titles. PNX is a free agentic SEO tool built for creators, founders and SEO teams who need real answers — fast — without paying $99/month for legacy platforms. This guide breaks down everything about YouTube SEO keywords in plain English, with a comparison table, internal links to our free tools, and a one-click way to try it yourself.

Where to place YouTube SEO keywords

  • Title: primary keyword in first 40 chars
  • First line of description: primary + secondary
  • Tags: 1 broad + 5 specific + 2 misspellings
  • Filename of uploaded MP4: yes, this still works
  • Spoken in the first 30 seconds: helps YouTube's auto-captions match
  • Pinned comment: 1–2 long-tail variations

How PNX finds the right keywords (free)

PNX combines YouTube autosuggest, top-ranking video transcripts, and an LLM-generated intent map. Output: a list with volume estimates, difficulty estimates, and ready-to-paste tag groups.

Comparison: YouTube keyword tools

ToolVolumeTag suggestionsIntentFree?
PNX✅ Estimates✅ Grouped✅ Labelled✅ Unlimited
VidIQPaid
TubeBuddyPaid
Keywordtool.io YTPaid
YouTube autosuggestFree

Next steps

With the keyword list in hand, run a full video brief using PNX as your free YouTube SEO toolkit, or pull the same logic into your blog with AI keyword research.

<div class="cta-glass-wrap"> <a class="cta-glass" href="/chat" data-prompt="Give me 20 YouTube SEO keywords for [your niche], grouped by video intent">Free YouTube Keyword Research →</a> </div>

Keep reading

Ready to put this into practice? Launch PNX free — no credit card, no daily cap, no signup wall.

Related guides