Form Optimization Tool for Landing Page Forms, Lead Forms and Web Form Conversion
Paste the page your form lives on. Converto counts the fields a visitor actually sees, names the ones a first step rarely needs, checks the keyboard each field opens on a phone and the words on the button, then ranks every fix by what it costs you.
Why this tends to convert:
Suggestions are data-informed, not guarantees.
In short
Form optimization means cutting the friction between a visitor deciding to convert and the form actually being sent: fewer fields, the right fields, the right keyboard on a phone and a button that says what happens next. Converto audits the forms on any live landing page in minutes with nothing to install. It flags any form past five visible fields, names fields that can usually wait (company, job title, website, how did you hear about us, date of birth and others), checks email, phone and number inputs for the wrong mobile keyboard, and returns rewritten button labels. It reads the page, so it does not track field-level drop-off the way form analytics tools do.
What you get
Form optimization, built for founders and marketers
Only the fields a person sees
Hidden inputs, tracking fields and spam traps are skipped, so a form that looks like three fields is scored as three fields, not eleven. The count in the report is the count your visitor faces.
Names the fields that can wait
Job title, company, website, fax, a second address line, date of birth, gender, middle name, a repeated email and "how did you hear about us" are each named when they appear. Phone joins the list everywhere except lead and booking pages, where it is often the point.
Checks the keyboard on a phone
An email field without type="email" or a phone field without type="tel" opens the letter keyboard on a phone. The audit names each one, because that is the exact moment mobile visitors give up.
Fixes the button, not only the fields
A form that ends in "Submit" or "Send" gets rewritten labels built from your own copy, alongside the field cuts, so the whole ask changes in one pass.
How it works
From a pasted URL to shipped variants in four steps
Paste the URL of the page with the form
A landing page, a contact page, a quote request, a demo page or a checkout. No snippet, no form builder login.
Read the form findings in the ranked list
Each one names the measurement behind it: the field count, the field names that can wait, the input types, the button label and where the first call to action sits.
Cut, relabel and ship
Remove the fields you can ask later, fix the input types, paste a new button label, and publish.
Re-audit, then compare completions
Run the same page again so the before and after are measured by the same rules, then compare form submissions per visitor in your analytics over a fair period.
What the form audit checks, and when each check fires
Most form advice is a list of principles: keep it short, use one column, label every field. All true, and none of it tells you which of those your form breaks today. The audit measures the form on the live page with the same rules every time, and each finding names the number or the field it came from.
| What gets measured | When it becomes a finding | How it usually happens |
|---|---|---|
| Visible fields in the longest form | More than 5. More than 8 raises a second, heavier layout finding | A quote form that asks for name, email, phone, company, role, budget, timeline, address and a message before anyone has spoken |
| Fields a first step rarely needs | Any of job title, company, website, fax, a second address line, how did you hear, date of birth, gender, middle name or a repeated email. Phone too, except on lead and booking pages | The form builder template kept every field it shipped with |
| Mobile keyboard | An email field without type="email", a phone field without type="tel", or a number field that opens the letter keyboard | Every field is a plain text input because that was the default |
| Button label | No button starts with an action verb, or the label is a generic one such as Submit, Send, Continue, Next or Learn more | "Submit" under a form that is really a request for a quote |
| Where the first call to action sits | More than 35 percent of the way down the page | The form lives at the bottom, under a long story, and most visitors never scroll to it |
| Competing calls to action | More than 6 | Navigation, chat, a newsletter pop-up and three offers all pulling against the one form that matters |
| Guest path on a checkout | A password field with nothing offering to continue as a guest | Forced account creation in front of payment |
The weighting changes with the page. On a page the audit reads as a lead or booking page, calls to action carry 28 percent of the score and copy 26, ahead of layout (20), speed (14) and AI-readability (12), because on a lead page the form and the first action decide the outcome. On a checkout, calls to action carry 32 and layout 28.
How many fields should a lead form have?
As few as the person who follows up can defend one by one, which for most lead forms is three to five. Converto flags any form past five visible fields and raises a heavier finding past eight. A longer form can still be right when every field filters out leads you would never close, but each one has to earn its place on the first step.
Field count on its own is a blunt measure, which is why the audit also names which fields can usually move. Work email is almost always worth keeping, because company, size and industry can be filled in from it later. One qualifying question, the one that decides who takes the call, is usually worth keeping too. "How did you hear about us" is rarely worth it on the first step: your analytics already record the source, and the answers people type are unreliable. We go deeper on the trade-off in how many form fields is too many.
Which form fields can wait until after the conversion?
Anything you need to deliver the service rather than to start the conversation. That usually means job title, company name, company website, a second address line, date of birth, gender or salutation, middle name and the "confirm your email" field. Ask for them on the thank-you page, in the onboarding flow or on the call, where a person who has already said yes is far more willing to answer.
Phone is the one field where the audit changes its mind by page type. On a quote, consultation or booking page, a phone number is often what the business sells on, so it stays. On a newsletter, a content download or a trial sign-up it is a reason to leave, and the audit says so.
Form optimization on a phone
A desktop review misses the most common mobile form problem, because on a laptop every text box behaves the same. On a phone, the input type decides the keyboard. An email field marked as plain text opens the letter keyboard with no @ key in reach; a phone field without type="tel" opens letters instead of the dial pad; a ZIP code or quantity field without a numeric input mode does the same. Each is a one-attribute fix, and the audit names every field that needs it. If most of your paid traffic is mobile, the mobile landing page optimization page covers the rest of the first screen.
Checkout forms are a separate problem
Baymard Institute’s checkout research found that the average checkout flow in 2024 had 11.3 form fields, while most sites need only 8 in total. That gap is where shipping, billing and account fields duplicate each other. On a page the audit reads as a checkout, it also checks for a guest path next to any password field, whether extra costs are stated before the pay button, and whether a trust line sits near it. The checkout page optimization page goes through each of those.
Form optimization tools compared
Form tools fall into three groups, and they answer different questions. Pick by the question you have, not by the longest feature list.
| Type | Examples | What it tells you | What it needs | Best for |
|---|---|---|---|---|
| Form analytics | Zuko, plus the form analytics in Mouseflow | Which field people abandon at, how long each field takes, which ones trigger errors | A tracking script on the page and enough traffic to see a pattern | High-traffic forms where you need to prove which field is the problem |
| Form builders with testing | Formstack, Unbounce forms, HubSpot forms | Submissions, partial submissions and, where the builder supports it, results of a page or form variant test | Rebuilding the form inside their builder | Teams that already build pages there |
| Page audit | Converto | Which fields to cut, which inputs open the wrong keyboard, what the button should say, plus every other conversion problem on the page | A live URL. Nothing installed | Pages that need the fixes named today, including low-traffic pages that analytics cannot read yet |
The honest summary: if you already have thousands of form starts a month, field-level analytics will show you things an audit cannot, and you should use it. If you have a few hundred visitors and a form nobody has questioned since launch, waiting for analytics to reach a pattern costs you months of leads that a ten-minute audit would have saved. Many teams run both. For the broader picture, see the full landing page audit.
What a form audit will not tell you
It reads the HTML the server sends. A form injected by a script after the page loads, or embedded in an iframe from a form vendor, is not counted, and the audit will report the page as if the form were not there. If your form comes from an embed code, check the field count yourself, and consider whether a form that crawlers and answer engines cannot see is costing you elsewhere. The audit also does not see validation errors, what happens after submit, or lead quality. A shorter form usually brings more submissions; whether those are the leads you want is a question for your CRM over a full sales cycle.
If your form sits on a demo request page, the demo request page audit applies the same field rules to the most expensive form most B2B sites have. If it sits under paid traffic, the lead generation landing page optimization page covers the page around it, and plans start at $29 a month billed yearly on the pricing page.
Questions
Form optimization questions
It depends on what you need to know. Form analytics tools such as Zuko show which field people abandon, but need a tracking script and steady traffic. Form builders such as Formstack let you test variants inside their builder. Converto audits the form on any live page from a URL and names the fields to cut, the inputs to fix and the button to rewrite, with no install. High-traffic teams often use analytics and an audit together.
For most lead forms, three to five. Converto flags forms past five visible fields and raises a second finding past eight. Top-of-funnel offers such as a newsletter need one or two; a quote or demo request can justify four to six if every field changes who follows up. Ask anything else after the visitor has converted.
Often, when the form is long enough to feel like work, because the first step asks for little and the visitor has already committed by the second. They do not fix a form that asks for things it does not need. Cut the fields that can wait first, then split what is left if it is still more than five.
The usual causes, in order: too many fields, fields that ask for things a first step does not need, a generic Submit button that never says what happens next, the form sitting too far down the page, and inputs that open the wrong keyboard on a phone. An audit of the live page checks all five in minutes. If none of those fire, the problem is more likely the offer or the traffic.
It reads the HTML your server sends, so native forms rendered on the page, including most WordPress form plugins, are counted. Forms that load inside an iframe or are injected by a script after the page loads, which is how many embed codes work, are not counted. The rest of the page, including the button labels and the copy around the form, is audited either way.
A self-serve audit costs a subscription: Converto starts at $29 a month billed yearly for 25 audits, each with rewritten copy. Form analytics tools are priced by traffic or sessions, and agency form work is usually part of a larger CRO project. Check each vendor's current pricing page, because those plans change often.
Paste your page and see what is leaking
Drop in any live URL and Converto audits the copy, layout, CTAs, speed, and AI-readability of the page you already have, then hands you ready-to-ship variants to lift signups and sales. No rebuild, no snippet, no sales call. Suggestions are data-informed, not guarantees.