Free Brand Voice Analyzer
A brand voice analyzer scans a block of your marketing copy and instantly tells you how your brand sounds - tone, energy, rhythm, vocabulary, and a signature one-line voice descriptor you can hand to writers or AI tools so every new piece of copy stays on-brand.
How to use the brand voice analyzer
- 1
Paste your copy
Drop in your homepage, About page, email, or ad copy. Aim for 80+ words so the analysis has enough signal. You can also try one of the built-in samples.
- 2
Click Analyze voice
The tool runs a full heuristic analysis in your browser - tone, energy, rhythm, vocabulary, pronouns, and reading level - and renders an instant voice profile.
- 3
Read your descriptor
You get a one-line voice descriptor, four score gauges, your top vocabulary, and pronoun distribution. Use it to brief writers or to prompt AI tools.
- 4
Download the voice card
Export the full profile as a Markdown voice card or copy it as JSON. Hand it to your team, paste it into a creative brief, or feed it to your favorite LLM.
Frequently asked questions
What is a brand voice analyzer?
A brand voice analyzer is a tool that scans a block of your marketing copy and tells you how your brand sounds: how formal or casual it is, how playful or authoritative, how energetic, what rhythm your sentences have, and which words you reach for most. The output is a one-line voice descriptor plus a set of scores you can hand to writers, agencies, or AI tools so the next piece of copy sounds like you.
How does the brand voice analyzer work?
Paste your homepage, About page, or any chunk of brand copy. The tool runs a heuristic analysis in your browser - counting contractions, slang, exclamations, hedging vs assertive verbs, high-arousal vs measured vocabulary, sentence length variation, pronoun usage, and reading level. Each axis is scored from 0 to 100 and combined into a plain-English voice descriptor.
Is this brand voice tool really free?
Yes, completely free. No signup, no credit card, no usage cap. The analysis runs entirely in your browser, so your copy never leaves your device unless you also use the optional URL fetch feature. It is built and hosted by Launch Blitz as a way to introduce people to our full brand-extraction product.
How accurate is the voice analysis?
The scores are heuristic, not magic. They are very good at picking up the obvious dimensions of voice - casual vs formal, punchy vs dense, customer-facing vs team-facing - especially when you paste 100+ words. They are less reliable for irony, jargon-heavy technical copy, or extremely short snippets. Treat the descriptor as a useful starting point, then refine with a human read.
Can I download my brand voice profile?
Yes. After analyzing, you can download the full voice card as a Markdown file or copy the entire analysis as JSON. The voice card includes your one-line descriptor, all four scores, sentence rhythm stats, top vocabulary, pronoun distribution, and reading level - perfect for handing to a writer, designer, or AI prompt.
Want a 90-day on-brand content calendar in your voice?
Launch Blitz uses your voice profile to generate 90 days of copy, images, and posts across every major platform - all sounding exactly like you.
Try Launch Blitz →