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COPYWRITING

How to write copy that sells — 8 copywriting rules

From 2,100 delivered websites we extracted 8 patterns that most often turn a "site that just sits on the internet" into a "site that generates clients". Each rule with a real before/after example — and concrete conversion numbers.

"I have a beautiful site but clients don't call." We hear this weekly. In 80% of cases the problem isn't design or SEO — it's the copy. Specifically: the headline on the first screen, the first paragraph below it, and the one sentence under the button.

This article isn't about copywriting theory. It's 8 concrete rules that applied together change conversion of a business website from ~1.5% (typical) to 3–5%. Each rule has a before/after example from our portfolio.

1. Headline talks about the customer benefit, not about you

Most common mistake on business sites. Headline reads "Professional law firm in NYC with 20 years of experience". This talks about you. Customer reads and thinks: "So what?"

Before: "Smile Dental Practice — 15 years of experience, modern equipment, comprehensive services"

After: "Leave the office smiling — pain-free visit, no queue, full quote before treatment"

Effect: this client's CTR from homepage to booking form went from 2.1% to 4.8%. Same services, same photos. Different headline.

2. Specifics instead of generalities

Words like "professional", "comprehensive", "experienced", "modern" — copywriter filler. They tell the customer nothing. Every competitor claims the same.

Before: "We offer comprehensive cleaning services at the highest level"

After: "We clean a 1,000 sq ft office in 90 minutes. Same crew every week. $80 once weekly, with invoice."

Effect: monthly inquiries went from 4 to 17. Specifics filter out the uninterested but attract those with budget and intent.

3. Start with the customer's problem, not the solution

Good sales copy starts by describing a problem the customer already knows. Customer should think: "Yes, exactly what I deal with". Only then offer a solution.

Before: "Our modern warehouse management platform streamlines logistics processes"

After: "Every week you spend an hour searching for inventory that Excel says exists but isn't in the box. Every month inventory reconciles 5–10% off. That costs you thousands. Let's fix it."

Effect: time on site rose from 0:32 to 2:14. Demo form conversion: 7.8% (was 1.1%).

4. Social proof must be concrete and credible

"Trusted by hundreds of companies" — empty slogan. Customer doesn't believe. "2,100 businesses. Average 4.9/5" — works. Numbers create reality.

Same with customer reviews. Generic "Great service, recommend!" is weaker than a concrete story: "Site was ready in 6 days, first weekend fully booked."

Good reviews contain: name + last initial, specific before/after situation, numbers (time, amount, percentage), author's photo (best from LinkedIn).

5. Address objections before the customer thinks them

A customer reading your offer has a list of "buts" in their head. "But it's expensive." "But surely they upsell." "But it will take months." "But they won't answer the phone if I have a problem."

Best copy names these objections by name and answers immediately. FAQ is a classic, but even better — weave them into the offer copy:

"We know how you feel hearing $249 for a site. You're asking: is this too cheap? Will someone try to upsell hosting after a year? Will anyone pick up if I have a problem? — Yes, hosting is forever in the price. Yes, we answer the phone 9 AM – 8 PM CET, every day."

6. One call to action per screen

Many businesses make the "action scatter" mistake — first screen has 3–4 different buttons: "See packages", "Order demo", "Download catalog", "Contact". Customer doesn't know what to click, so clicks nothing.

Rule: each screen has one main call to action, plus optionally one secondary (ghost button — no fill).

CTA wording also matters. "Submit" is worse than "Submit application". "Buy" worse than "Order now — delivery tomorrow". Say what happens after the click.

A/B test on our client's site: changing "Contact us" to "Get a quote in 24h" raised click-through by 67%.

7. 6th-grader language — shorter, simpler

The average reader scans site text. They spend 3–5 seconds on the first screen deciding to stay. Every long word, every industry phrase reduces the chance they understand.

Test: if your text could be read aloud to a 14-year-old and they'd understand it — good. If not — rewrite.

Before: "We implement comprehensive solutions in the field of modern information technology"

After: "We build websites, stores, and web apps. Fast, well, on time."

8. Short paragraphs, lots of white space

A paragraph longer than 4 lines on screen = customer scrolls past. "Wall" text blocks go unread. Your offer might be brilliant but if it looks like a dissertation, no chance.

Formatting rules that work:

  • Paragraph = max 3 sentences (ideally 2)
  • Every 2–3 paragraphs — subheading (H2 or H3)
  • Bullet lists > paragraphs enumerating things
  • Bold key phrases (max 1 per paragraph)
  • Sections visually separated (background, padding, icon)

Just changing formatting of long text to "scannable" can raise conversion 30–50% without changing a single word of the content.

Bonus: 9. Write like you talk to the customer

Most common traps: corporate "we", overly formal "esteemed client". Modern customer wants "you", "we", "together". Stiff, official language alienates. Warm, direct language builds relationship — and that sells.

Plan for the coming week

If you want to rework your site:

  1. Day 1 — rewrite home page headline. At least 5 variants. Pick the one with benefit + specifics.
  2. Day 2 — read all copy on the site. Cross out every "professional", "comprehensive", "individual" and replace with specifics.
  3. Day 3 — list 5 most common customer objections. Weave answers into offer copy.
  4. Day 4 — review reviews. Generic ones — replace with concrete stories (ask clients for details).
  5. Day 5 — fix formatting. Split long paragraphs. Add subheadings, bolds, lists.

After a week of work you'll see first effects in Analytics. After a month — in inbox volume.


A DEVIQO website always launches with ready sales copy — we write it ourselves, based on your brief, following the rules in this article. See what's in the package.

Kate — Client Success Manager
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Katarzyna Lewandowska · Client Success Manager · replies 9 AM – 8 PM CET