The tone of any piece of digital content can be analyzed along 4 dimensions: humor, formality, respectfulness, and enthusiasm.
The Four Dimensions of Tone of Voice
How to communicate on Social Media? Tone of brand voice - BrandBase
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What Are the Four Dimensions of Tone of Voice? Why Tone Matters
What Are the Four Dimensions of Tone of Voice? Why Tone Matters
Tone of Voice Roadmap - Anne's Art and Design Space
Two Easy Exercises That Will Strengthen Your Brand's Tone of Voice
Brand tone-of-voice definition and examples - Digital marketing
The Four Dimensions of Tone of Voice
Tone of Voice Roadmap - Anne's Art and Design Space