Read a homepage, then read three blog posts on the same site, then read a service page. On a lot of small business websites those four pieces of writing sound like they came from four different companies — one formal, one casual, one heavy on marketing language, one that reads like it was copied from a competitor and lightly reworded. The design might be consistent. The writing usually isn’t, and readers notice the mismatch even when they can’t name what’s wrong.
A brand voice guide fixes this with something closer to a short reference sheet than a branding document — a page that says, in plain terms, who you’re writing for and how you sound when you do it. It gets more valuable the moment more than one person touches the content, or the site grows past the point where you remember every decision you made on page one.
Quick Answer
A brand voice guide is a short document defining how your website communicates — across pages, blog posts, emails, and calls to action. A working one-page version needs five things: your audience, three to five voice characteristics, a short list of words and phrases you actually use, a list you deliberately avoid, and one or two before/after writing examples. Build it once your site’s core purpose is clear, keep it to one page, and treat it as a living reference rather than a document nobody reopens.
Why This Actually Affects Trust, Not Just Style
Visitors form an opinion about a business within seconds of reading its content, and an inconsistent voice reads as a credibility problem before it reads as a style one — a professional-sounding homepage next to an informal, joke-heavy blog raises an unconscious question about which version of the business is real.
The most commonly cited research on this is Lucidpress and Demand Metric’s 2016 brand-consistency survey (updated in 2019), which found companies with consistently presented branding across all touchpoints reported an average 23% revenue increase, with the top-performing group in the 2019 update reaching as high as 33%. It’s worth being honest about what that number actually is: a self-reported marketer survey, not a controlled study, so treat the exact percentage loosely. The directional finding still holds up against harder research on cognitive fluency — audiences process a consistent voice faster and trust it more readily, even when they can’t explain why.
In my experience, sites with a documented voice are also simply faster to grow, because every new page follows an existing pattern instead of restarting the “how should this sound” decision from zero.
Step 1: Define Who You’re Actually Talking To
Before deciding how the site should sound, settle who it’s speaking to. Are visitors beginners or experts? Business owners or consumers? Looking for education, or ready to buy? The answer shapes everything downstream — Veravix, for example, targets people actively building or improving a website who want practical steps over theory, which is why the voice leans instructional rather than academic. If you haven’t nailed down what the site’s core purpose is, settle that first — audience and purpose feed each other, and defining voice before purpose usually means redoing the voice guide later.
Step 2: Pick Three to Five Voice Characteristics — Not Ten
Nielsen Norman Group’s UX-writing research frames tone along four measurable axes: funny vs. serious, formal vs. casual, respectful vs. irreverent, and enthusiastic vs. matter-of-fact. Rather than inventing traits from scratch, place your site on each of those four scales — it forces a real decision instead of a vague adjective list.
A voice guide with ten personality traits is one nobody can apply consistently. Veravix settled on five: practical, helpful, clear, confident, educational — direction without becoming restrictive.
Step 3: Decide How You Explain Things, Not Just How You Sound
Voice isn’t only tone — it’s also structural. Do you use plain language or technical terminology? Step-by-step explanations or high-level summaries? Concrete examples or abstract principles? For most sites, practical implementation over lengthy theory matches how visitors actually consume content: they arrived with a specific task, not to read a textbook chapter. When I build tutorial-focused sites, I default to clear actions over exhaustive explanation for exactly this reason.
Step 4: Build Your Use / Avoid Word Lists
Recurring phrases create consistency readers pick up on even subconsciously — “step-by-step guide,” “practical tips,” “common mistakes” show up deliberately across this site’s own content for that reason. The avoid list matters just as much and is the step most guides skip. “Game changer,” “revolutionary solution,” “cutting-edge,” “industry-leading,” “leverage,” “synergy” — none of these carry real information, and stripping them out usually improves both readability and how the content reads to search engines. Google’s own helpful content guidance explicitly rewards content written for people over content optimised to sound impressive.
Step 5: Formatting Rules and a Before/After Example
Voice includes visual presentation, not just word choice — heading style, paragraph length, when to use a list versus prose, how calls to action are phrased. Document the rules once so every future page follows the same pattern without a fresh decision each time.
One clear before/after pair does more than a page of abstract rules. Too formal: “Website optimization is an essential component of digital marketing success.” Preferred: “Improving your website helps visitors find information faster and can increase conversions.” The second version says the same thing and reads like a person wrote it.
A One-Page Template
| Section | Content |
|---|---|
| Audience | Who the site is built for, in one sentence |
| Voice characteristics | 3–5 traits, placed against NN/g’s four tone axes |
| Writing style | Plain language, step-by-step, practical over theoretical |
| Use these phrases | Recurring, natural language specific to your content |
| Avoid these phrases | Generic marketing filler that adds no information |
| Formatting rules | Short paragraphs, descriptive headings, lists when useful |
This is usually enough for a small business site. A twenty-page brand document nobody reads is worse than a one-pager everyone actually follows.
Common Mistakes
- Making it too complicated. A twenty-page document nobody follows is worse than no guide at all.
- Copying a competitor’s voice. It reflects their audience, not yours, and it reads as unnatural on your own content.
- Building it around who writes the content, not who reads it. The best voice guide starts from the reader.
- Never revisiting it. An audience shifts as a site grows — a beginner-focused site that succeeds often attracts more advanced readers over time, and the guide should shift with it.
Brand Voice Guide vs Website Style Guide
A brand voice guide governs communication — how the content sounds. A website style guide governs presentation — colours, fonts, logos, spacing. Most sites need both, and they work together rather than overlapping: the style guide controls appearance, the voice guide controls the words filling it. Once both are in place, they naturally shape the customer avatar behind your content and vice versa, since tone should follow directly from who you’re actually writing for.
Conclusion
A brand voice guide doesn’t need to be elaborate to work — audience, three to five voice traits, a use/avoid word list, and one before/after example is enough to keep a growing site sounding like one business instead of several. Write it down once your content strategy and purpose are settled; see the guide on writing a content strategy for a new website for that broader framework.
Etienne Basson works with website systems, SEO-driven site architecture, and technical implementation. He writes practical guides on building, structuring, and optimizing websites for long-term growth.