AI Brand Voice Analyzer

About this tool

A brand voice is the difference between ads that sound like a template and ads that sound like you. This free AI brand voice analyzer reads a sample of your existing copy and returns a clear tone profile: formality, energy, humour level, vocabulary, sentence rhythm and the words you should never use. Instead of guessing whether your Facebook ad copy sounds off-brand, you get a measurable reference you can hand to a copywriter, an agency or an AI generator. Use it before your next campaign so every headline, caption and email lands in the same recognisable voice, even when several people write them.

How it works

1. Paste three to five samples of your best existing copy — website hero, emails, social captions or ad copy.
2. The AI brand voice analyzer scores your tone across formality, energy, friendliness and urgency.
3. You receive a written voice profile with do's, don'ts and example phrases that match your style.
4. Save the profile and reuse it as a prompt whenever you generate Facebook, Instagram or TikTok copy.

Who it is for

• Small business owners who write their own ads and want a consistent, professional tone of voice across every channel they use.
• Freelance copywriters who need to onboard a new client's voice quickly and prove to the client that the finished copy genuinely matched it.
• Agencies managing several brands at once, where each brand must keep a clearly separate voice even when the same team writes all of the copy.
• SaaS marketing teams where the product page, the support replies, the sales emails and the paid ads are written by four different people.

Best practices

Feed the analyzer copy you are genuinely proud of, not a random page from your website. Ten to fifteen sentences is enough to detect a pattern. Review the profile with your team and turn it into a one-page voice guide with three example sentences. Re-run the analysis every quarter, because brand voices drift after rebrands, new hires or product launches. Finally, test the guide by writing five headlines and checking whether a colleague can tell you wrote them without seeing the brand name.

Common mistakes to avoid

• Analysing a mix of very different sources, such as a technical manual and an Instagram caption, which gives a muddy profile.
• Treating the tone profile as a permanent rule instead of a reference that evolves with your brand.
• Copying the generated example phrases word for word instead of writing fresh copy in that voice.
• Ignoring the rest of the funnel, so your ads sound premium and your landing page sounds generic.

Frequently asked questions