I once joined a company where three people ran the social accounts and all three sounded like different brands. One wrote in clipped sentences with no emoji, one used exclamation marks like confetti, and one somehow ended up arguing with strangers about logistics. None of them were wrong, exactly. They just had no shared rulebook. A style guide fixes that, but only if it's short enough that people actually open it before they post. Mine fits on two pages, and that's the whole secret.
Decide who you sound like before you write a word
Voice is the part teams skip because it feels fuzzy, and then every caption becomes a negotiation. Don't describe your voice with three adjectives and call it done. “Friendly, professional, bold” means nothing because every brand claims those. Instead, pin it down with contrasts.
- We are warm, but we are not your best friend from college.
- We are confident, but we never punch down at customers.
- We explain things, but we never lecture.
Then give two real examples for each: one line that fits and one that doesn't. A new hire can copy that in an afternoon. A list of adjectives, they have to interpret, and they'll interpret it differently every time.
Write the rules people actually trip over
Skip the obvious stuff. Nobody needs a rule that says “be clear.” Write the rules that settle real arguments. Do you use the Oxford comma? Is it “ecommerce” or “e-commerce”? Do you write numbers as digits or words? How many emoji per post is too many (mine caps at two)? Do you use first person plural or the founder's voice?
These look trivial until you see ten posts that each handled them differently. Consistency on small things is what makes a feed feel like one steady person rather than a committee. If captions are where your team struggles most, our guide on writing social media captions pairs well with this section.
Nail the visuals so the feed looks like one brand
Voice covers half of consistency. The other half is what people see in the grid. You don't need a 40-page brand bible. You need the handful of visual decisions that keep your feed recognizable from across the room.
The visual basics worth locking down
- Two or three brand colors with exact hex codes, not “blue.”
- One headline font and one body font, with a link to download them.
- A rule for logos: where it sits, how much it shrinks, when to drop it.
- Photo treatment: bright and airy, or moody and high contrast? Pick one.
- Whether text-on-image is allowed, and how much.
Save a few approved templates so people start from a correct file instead of a blank canvas. The blank canvas is where brand drift begins. On Instagram especially, where the grid is seen as a whole, a couple of locked templates do more for consistency than ten pages of written rules ever will.
Account for each platform without rewriting everything
A line that lands on one network reads as shouting on another. Your style guide should note the few places where the rules bend per channel. On a fast text feed, short and punchy wins. On a more visual network, the caption can breathe a little. On a professional platform, you drop the slang and lead with the insight.
Keep this section to a quick table, not an essay. The goal is one message adapted, not five separate brands. If you run several accounts at once, our piece on managing multiple social media accounts shows how a shared guide keeps them from drifting apart. When the adapting is done, a scheduling tool can push each version out so nobody is copy-pasting captions at 8am.
Make it a living document, not a stone tablet
The fastest way to kill a style guide is to finish it. Brands change, slang dates, and a rule that made sense last year starts feeling stiff. Put a “last reviewed” date at the top and actually revisit it every quarter. When you change a rule, tell the team why, because the reasoning is what helps them apply it to cases the guide never covered.
Tie the guide into your review step so it has teeth. If two people approve posts before they go live, the guide is the thing they check against, which is far less awkward than “this just feels off.” A clear approval workflow turns the guide from a document into a habit.
A good style guide is boring in the best way. It removes a hundred tiny decisions so your team can spend that energy on ideas instead of arguing about commas. Keep it to two pages, fill it with the rules people genuinely trip over, and review it often enough that it never goes stale. Do that, and your whole team will sound like one brand, even on the weeks nobody is watching closely.