How to Set Up Lead Forms That Convert: A Practical Guide to Increasing Inquiries

Before we talk about best practices, let’s look at why potential customers leave your website without clicking “Submit.”

In our audits across Czechia and the EU, we consistently see three major issues:

• Too many fields. Users won’t fill out postal codes, job titles, or their mother’s maiden name just to get a callback.
• Technical issues and poor UX. The form isn’t mobile-friendly, fields are too small to tap, or error validation only appears after a page reload.
• No clear motivation (Value Proposition). A headline like “Fill out the form” doesn’t sell. Users must understand what they gain by sharing their data.

A great form should feel like a natural continuation of your offer. Below is a checklist of elements that consistently improve conversion rates:

1. Minimal and relevant fields
Only ask for information essential at this stage of the funnel.

• For a quick consultation: Name + Phone is enough.
• For B2B or complex services (e.g., multi-page website development), adding fields like “Company name” or “Comment” is acceptable — but keep them optional.

2. Clear headline and action-driven CTA
Avoid vague phrasing. The button should communicate a result.
❌ Weak: “Send,” “Submit.”
✅ Strong: “Get a price quote,” “Book a time,” “Download checklist.”

3. Visual hierarchy and focus
The form should stand out from the background. Use contrast for the CTA button.
On a landing page, place the form multiple times: on the hero section, mid-page (after the value block), and at the end.

4. Mobile optimization
Over 70% of Czech traffic comes from mobile devices.

• Fields must be tall enough (at least 44px) for comfortable tapping.
• Keyboards should adapt automatically: numeric for phone fields, email keyboard for email input.

5. Speed and confirmation feedback
After clicking the button, the user should instantly see:
“Thank you! Your request has been received. We’ll call you back within 15 minutes.”
This reduces anxiety and confirms that the system worked.

Operating in the EU — including Czechia — requires strict GDPR compliance. Fines for mishandling personal data can be substantial even for small businesses.

A valid form must include:

• A checkbox with the text “Souhlasím se zpracováním osobních údajů” (I agree to the processing of personal data).
• The checkbox must not be ticked by default — the user must click manually.
• A link to your Privacy Policy page.

This isn’t just a formality — it’s a trust signal for European customers.

For more details, see our full guide on building a GDPR-compliant website.

At iuntsevich.cz, we don’t simply embed a form — we integrate it into your business processes.

Customer journey analysis.
A simple template website may only need a standard contact form.
For an online store, we develop “Buy in 1 click” logic and a complete checkout flow to avoid losing customers.

Analytics setup.
A form without tracking is useless.
We always configure Google Analytics 4 (GA4) to show not only the number of leads but also their sources (SEO, ads, social media).

Spam protection.
We use Google reCAPTCHA v3 (invisible to users) or Honeypot protection so your team doesn’t waste time on bot-generated leads.

Integrations.
Submissions can be sent not only to email, but also to Telegram or your CRM, enabling immediate response.

A form is the final point of your interaction with a customer.

If it “fails,” all your previous marketing efforts lose their impact.

If you want to make sure your website captures every possible lead — or need a new website with well-designed lead generation flows — we’re here to help.

Discuss your project with iuntsevich.cz