What's the right CTA length?

2-4 words is the sweet spot. Long enough to convey meaning ('Sign up' is too vague), short enough to fit on a button without wrapping (5+ words usually wraps on mobile). Examples: 'Get your free guide', 'Start your 14-day trial', 'See pricing', 'Book a demo'. Avoid full sentences or compound phrases.

Should I use first-person ('Get MY report') or second-person ('Get YOUR report')?

Joanna Wiebe of Copyhackers ran A/B tests showing first-person sometimes lifts conversions by double digits — possibly because it feels like the user is taking ownership of the action. But it's not universal; some tests show second-person wins. Test both for your specific audience.

Does urgency language work?

Real urgency: yes. 'Last 3 hours' (when actually true), 'Only 5 left' (when actually true), 'Sale ends Friday' (when actually does end Friday) — these convert well. Fake urgency: harmful long-term. Repeated false-urgency erodes trust faster than the short-term lift, and modern consumers spot it. Use urgency only when it's genuine.

What's the difference between a button CTA and a link CTA?

Buttons: high-stakes actions (sign up, buy, submit). Larger, colored, prominent. Same copy rules — 2-4 words, action verb. Links: lower-stakes actions (read more, see details). Smaller, often underlined or accent-colored. Can be slightly longer (5-8 words for clarity). The tool grades any CTA copy regardless of presentation, but consider whether yours should be a button or link based on the action's stakes.

How do I A/B test CTA copy properly?

Run two variants on equivalent traffic (split 50/50 by random assignment) for long enough to reach statistical significance — typically need at least 100-300 conversions per variant for a 5-10% lift to be detectable with confidence. Tools like Google Optimize (deprecated 2023), VWO, Optimizely, or PostHog handle the math; for small sites, simple split-traffic + manual tracking works.

Why does verb strength matter?

Active verbs ('Get', 'Start', 'See', 'Try', 'Download') signal clear action. Passive or weak verbs ('Click here', 'Submit', 'Continue') feel generic and don't reinforce the value prop. Compare 'Click here' (zero context about what happens) vs 'Get your free quote' (specific outcome). The active verb cues the user's expectation about what'll happen post-click.

Writing & Content · Free tool

Call-to-Action Analyzer

Analyze CTA copy for length, action verbs, and urgency — get a 0-100 clarity score plus actionable tips. Free, instant, no sign-up needed in your browser.

Updated June 2026

CTA text

Words

ideal 2-5

Action verb

start

Urgency

Yes

Clarity score

100/100

Recommendations

Strong CTA — ship it.

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What it does

Paste your call-to-action button text or link copy and the tool grades it on four dimensions: length (under 4 words = strong, 5+ = wordy), verb strength (action verbs that lead with a clear gerund or imperative score higher), urgency (presence of time-or-scarcity language), and clarity (does the user know what happens when they click). Returns a 0-100 score plus specific suggestions for what to fix.

Why CTAs matter so much: every conversion-focused page has ONE most-important button — “Sign up”, “Buy now”, “Start free trial”, “Get the report”. The text on that button is one of the highest-leverage strings on your entire site. Marketing studies consistently show that small CTA copy changes (e.g. “Sign up” → “Get started”) can produce 5-15% conversion-rate differences.

The grading rules are based on what consistently performs well in published A/B-test data: 2-4 words (long enough to be meaningful, short enough to fit on a button); active verb leading the phrase (“Get your free guide” beats “Your free guide is…”); specific outcome over generic action (“Start your 14-day trial” beats “Sign up”); first-person possessive sometimes lifts (“Get my report” vs “Get your report” — Joanna Wiebe of Copyhackers showed double-digit lifts in some tests); urgency without artifice (real urgency = good; fake urgency = harms long-term trust). Use this tool as a sanity check, not a replacement for A/B testing.

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How to use it

Paste your CTA copy. The current text on your button or link.
Read the score breakdown across length, verb strength, urgency, and clarity.
Apply the specific suggestions for low-scoring dimensions (e.g. 'verb is weak — try \"Get\" or \"Start\" as the leading word').
Iterate. Run multiple variants through the tool, pick the highest-scoring 2-3, then A/B test the winners on real traffic.
Don't trust the score blindly — context matters. A score of 70 may convert better than a score of 90 for your specific audience. The tool is a sanity check, not a substitute for testing.

When to use this tool

Pre-flight check on a CTA before launching a landing page.
Brainstorming variants — paste 5 candidates, see which scores highest as a starting point.
Reviewing existing CTAs across your site to identify the worst-scoring ones for prioritized rewrite.
Onboarding new marketing or product writers to button-copy best practices.

When not to use it

When you have actual conversion data — your data beats any heuristic. Trust the A/B test, not the analyzer.
Brand-voice copy where the CTA intentionally subverts conventions (witty, playful, ironic) — those don't score well by generic rules but may convert excellently for the right audience.
Mobile vs desktop differences — same CTA can perform differently on mobile vs desktop. Test on the platform that matters most for your traffic.
Languages other than English — the verb-strength heuristics are English-specific.

Common use cases

Educational use — demonstrating the underlying concept
Onboarding a colleague who needs the same calculation/conversion
Verifying a number or output before passing it on
Quick conversion during a typical workday

Frequently asked questions

What's the right CTA length?: 2-4 words is the sweet spot. Long enough to convey meaning ('Sign up' is too vague), short enough to fit on a button without wrapping (5+ words usually wraps on mobile). Examples: 'Get your free guide', 'Start your 14-day trial', 'See pricing', 'Book a demo'. Avoid full sentences or compound phrases.
Should I use first-person ('Get MY report') or second-person ('Get YOUR report')?: Joanna Wiebe of Copyhackers ran A/B tests showing first-person sometimes lifts conversions by double digits — possibly because it feels like the user is taking ownership of the action. But it's not universal; some tests show second-person wins. Test both for your specific audience.
Does urgency language work?: Real urgency: yes. 'Last 3 hours' (when actually true), 'Only 5 left' (when actually true), 'Sale ends Friday' (when actually does end Friday) — these convert well. Fake urgency: harmful long-term. Repeated false-urgency erodes trust faster than the short-term lift, and modern consumers spot it. Use urgency only when it's genuine.
What's the difference between a button CTA and a link CTA?: Buttons: high-stakes actions (sign up, buy, submit). Larger, colored, prominent. Same copy rules — 2-4 words, action verb. Links: lower-stakes actions (read more, see details). Smaller, often underlined or accent-colored. Can be slightly longer (5-8 words for clarity). The tool grades any CTA copy regardless of presentation, but consider whether yours should be a button or link based on the action's stakes.
How do I A/B test CTA copy properly?: Run two variants on equivalent traffic (split 50/50 by random assignment) for long enough to reach statistical significance — typically need at least 100-300 conversions per variant for a 5-10% lift to be detectable with confidence. Tools like Google Optimize (deprecated 2023), VWO, Optimizely, or PostHog handle the math; for small sites, simple split-traffic + manual tracking works.
Why does verb strength matter?: Active verbs ('Get', 'Start', 'See', 'Try', 'Download') signal clear action. Passive or weak verbs ('Click here', 'Submit', 'Continue') feel generic and don't reinforce the value prop. Compare 'Click here' (zero context about what happens) vs 'Get your free quote' (specific outcome). The active verb cues the user's expectation about what'll happen post-click.

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