Brand Voice

Establish a consistent tone that resonates with your ICP — and create a voice guide that makes AI-generated content sound like you every time.

Why It Matters

Brand voice is the difference between content that feels generic and content that builds an audience. "This feels robotic" is a voice problem. "This feels like a real person who gets it" is voice working.

Voice matters especially when using AI to generate content at scale. Without a voice guide, every piece of AI-generated content defaults to bland marketing speak. With a voice guide fed into FastWrite or your AI tool, output sounds like you.

Your brand voice should be designed for your ICP — not what sounds "professional" or "industry standard." The voice that makes your specific buyer think: this was written for me.

The Four Voice Dimensions

Every brand voice lives somewhere on four spectrums:

There's no right answer — but there are wrong answers for your specific ICP. A security tool for CISOs should sound different from a recipe app for home cooks.

Building Your Voice Guide

Step 1: Define Voice Personality

Choose 3-5 adjectives that describe your brand voice. Not "professional" or "innovative" — every brand claims those. Choose adjectives that actually differentiate your tone.

Examples by brand type:

• Developer tool: Direct. Specific. No fluff. Builder-minded.
• Consumer app: Warm. Encouraging. Celebratory. Approachable.
• B2B SaaS: Confident. Practical. Evidence-based. Peer-to-peer.

Step 2: Create the Voice Guide

For each voice dimension, document:

• A 2-sentence definition of what it means for your brand
• "We say" examples (3 specific phrases or sentences)
• "We don't say" anti-examples (what to avoid)
• One example paragraph (75-100 words) demonstrating this voice

Step 3: Build Your Vocabulary

Words to use: Specific to your positioning and ICP. For a developer tool: performance metrics, precise technical terms. For a marketing tool: outcomes, revenue, pipeline, CAC, ROI.

Words to avoid: Generic marketing language. Most brands should avoid: "revolutionary," "world-class," "seamless," "robust," "leverage," "utilize," "synergy."

Step 4: Create Before/After Examples

The most useful part of a voice guide is side-by-side comparisons. For 5 real scenarios (tweet, email subject, landing headline, LinkedIn post, error message), write:

• Before: Off-brand version (too formal, too generic, too salesy, or AI-sounding)
• After: On-brand version using your voice
• Note: What specifically makes the After version better

Step 5: Configure AI Tools

Feed your voice guide directly into AI content tools. In FastWrite:

• Navigate to Brand Voice settings
• Paste your voice guide, vocabulary lists, and examples
• Test generation and compare to expected output

Prompt template for any AI tool:

You are writing content for [Product]. Use this brand voice guide:

Voice: [adjectives]
We sound like: [one sentence]
We use words like: [vocabulary list]
We never say: [avoid list]
Example: [paste example paragraph]

Now write: [content request]

The Voice Guide as a Living Document

Update when:

• You find a piece of content that's clearly on-brand (add as example)
• Content generates unusually strong engagement (note what made it work)
• You find yourself editing AI output the same way repeatedly (codify that edit as a rule)

Review and update quarterly.

Deliverable

One markdown file: brand-voice.md containing:

1. Voice personality (3-5 adjectives + definitions)
2. Voice guide per dimension (do/don't examples)
3. Vocabulary guide (use / avoid / explain)
4. Before/after examples (5 scenarios)
5. AI prompt template for content generation

Resources

• FastWrite — AI content generation with brand voice configuration
• StoryBrand Framework — Narrative structure that complements voice development