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One extra field, one less booking

This lesson shows you which fields your form really needs and which ones to cut today so fewer people drop off along the way.

By Yodai · Published September 6, 2026 · Updated October 13, 2026

You're building the form on your website, and the same temptation always creeps in: ask for everything just in case. First name, last name, email, phone, company, how you heard about us, a message. It feels more serious, more complete, more professional.

But it's the opposite. Every field you add is one more person who thinks twice before filling it out. And some just close the tab. The usability consulting firm Nielsen Norman Group sums it up: every time you remove a field or question from a form, its conversion rate goes up, that is, the share of visitors who actually submit it. A form doesn't get more serious with more boxes to fill in, it gets less serious, because it starts to feel like paperwork instead of a quick way to reach you.

The question that decides if a field stays

Before you add a field to the form, ask yourself one very specific question: do I need this piece of information to take the first step, today? The first step is replying, getting paid, or booking. If the information doesn't help with any of those three things, it doesn't belong on the form. It belongs in the conversation that happens later, once there's an actual interested person on the other end.

You need their phone number to text them on WhatsApp. You need the date and service to schedule the appointment. You need their name to know who you're writing back to. Where they work, how they found you, or a backup phone number "just in case" aren't useful today: that's curiosity, not the first step. And curiosity gets asked in person, not at the door. The law backs this up: the General Data Protection Regulation requires that personal data be "adequate, relevant and limited to what is necessary in relation to the purposes for which they are processed."

This data comes from Baymard Institute, which studies checkout flows at major online stores: most only need 8 fields, but by 2024 the average was 11.3, and in its survey of U.S. online shoppers, 17% had abandoned a purchase because checkout was too long or complicated. These aren't booking forms, but the logic holds for a booking or contact form too, and it matters even more when someone fills it out on their phone, in a hurry, while doing something else: on mobile, Nielsen Norman Group warns, even the smallest annoyance turns from a grain of sand into a mountain, slowing people down and keeping them from finishing. Every extra field is one more pause, one more "why do they need this?", one more excuse to put it off for later. And later doesn't always come.

Yodai builds the site from what you tell it, with a store, bookings or quote requests depending on what you do. See what the website for your business looks like.