Free Power Words Checker
Paste your headline or copy and instantly see the persuasive power words light up by emotion. Get a live score and a category breakdown so you can make every line hit harder.
Colored words are power words, grouped by the emotion they trigger. Any dashes are flagged in gray as a clean-up tip, since em dashes are a common AI writing tell.
Power score
0
WaitingPaste some copy to see how persuasive it is.
By emotion
- Urgency0
- Trust0
- Value & greed0
- Exclusivity0
- Curiosity0
- Safety0
How it works
How to check your copy in 3 steps
Find the persuasive words in your copy in under a minute and see exactly where to make your headlines and calls to action hit harder.
- 01
Paste your copy
Drop in a headline, call to action, ad, email subject line or any landing page copy you want to strengthen.
- 02
See the power words light up
The tool highlights every power word it finds and color-codes it by the emotion it triggers, with a live score and breakdown.
- 03
Edit and re-check
Add stronger words where your copy feels flat, trim any overload, and watch the score update instantly as you type.
Why it matters
Why power words matter
The right words make people feel something, and feeling is what drives action. Strong, emotional language is one of the cheapest ways to lift attention, clicks and conversions across every piece of copy you write.
Grab attention faster
A single strong word in a headline can be the difference between a scroll and a click. See where yours land at a glance.
Spot flat, weak copy
If nothing lights up, your copy is probably forgettable. The highlighter shows you exactly where to add punch.
Balance emotion, avoid hype
A category breakdown helps you mix urgency, trust and value, and warns you when copy tips into overload.
Write faster with no AI
No prompts, no waiting, no signup. Just paste, see what works, and edit. Your text stays private in your browser.
Use cases
Where teams use the power words checker
From landing page headlines to ad copy and email subject lines, here is how marketers and copywriters use a quick power word check to sharpen everything they write.
Landing page headlines
Test your hero headline and subheadline so the first thing visitors read pulls them in instead of letting them bounce.
Ad copy
Strengthen Facebook, Google and native ad headlines so they earn the click without wasting impressions or budget.
Email subject lines
Check subject lines for urgency and curiosity so your emails get opened instead of sliding past in a crowded inbox.
Calls to action
Make your buttons and CTAs feel worth clicking by swapping weak verbs for words that create momentum and value.
Product and sales pages
Audit long-form copy section by section to keep benefits vivid and persuasive from the headline to the final offer.
Social and video hooks
Tighten the first line of a post or the opening hook of a video so people stop scrolling and keep watching.
FAQs
What are power words?
Power words are persuasive, emotionally charged words that grab attention and push people to act. Words like free, proven, instantly, exclusive and guaranteed trigger feelings such as urgency, trust or curiosity, which is why copywriters use them in headlines, calls to action and landing page copy.
What is a power words checker?
A power words checker is a free tool that scans your text and highlights the persuasive words inside it, grouped by the emotion they trigger. It gives you a quick score and a breakdown so you can see at a glance whether your copy is compelling or flat, then add or swap words to make it stronger.
How do I use power words in my copy?
Use them where attention is highest: headlines, subheadings, calls to action and the first line of an email or ad. A good rule is to lead with one strong word and support it with a clear benefit. Avoid stacking too many in a row, which can feel like hype and lower trust.
What are the categories of power words?
This tool groups power words into common persuasion categories such as urgency (now, hurry, deadline), trust (proven, guaranteed, secure), greed and value (free, bonus, save), exclusivity (members only, invite, limited), curiosity (secret, reveal, surprising) and safety (protected, risk-free, backed). Mixing categories tends to be more persuasive than leaning on just one.
How many power words should I use?
There is no fixed number, but density matters more than count. A headline often needs just one strong word, while a paragraph might carry a few. If the highlighter shows almost every other word lit up, your copy may read as hype. The goal is impact without overload.
Do power words really improve conversions?
Used well, yes. Power words make benefits feel more vivid and reasons to act more urgent, which can lift click-through and conversion rates on headlines, ads and calls to action. They are not magic on their own, though. They work best on top of a clear offer and a focused landing page.
Does it detect em dashes and AI writing tells?
Yes. The checker flags em dashes and en dashes in your copy and marks them in gray as a clean-up tip. Heavy use of em dashes has become a common sign of AI-written text, so many writers now remove them. Swap a dash for a comma, a period or a quick rewrite and your copy reads more human.
Is this power words checker free?
Yes. The power words checker is 100% free with no signup and no limits. Check as much copy as you like, for personal or commercial projects, without paying anything.
Is my text stored anywhere?
No. The tool runs entirely in your browser using JavaScript and a built-in word list. Your text is never uploaded and never leaves your device, so you can safely check unpublished headlines and campaigns.
Put your strongest words on a page that converts
Powerful copy deserves a landing page built to match. Use LanderLab to ship a fast, mobile-friendly page in minutes and turn your sharpened headlines into signups and sales.