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Copy the HTML Checkbox example below.
HTML · FORM CONTROL
HTML Checkbox — toggle and multi-select (live demo)
A checkbox is an <input type="checkbox"> that lets a user turn a single option on or off, or pick several options from a group (each with its own name). When checked, its value is submitted; when unchecked, nothing is sent for it at all. Below is a working form with checkboxes.
- 500 free / mo
- No backend
- Copy-paste ready
Copy-paste ready
The HTML Checkbox example below is a complete, working form — paste it into any HTML page and it submits, no edits to the markup required.
No backend to build
Your html checkbox form posts to one endpoint. No server, PHP, or API route — submissions land in your inbox and a searchable dashboard.
A form that really submits
Unlike a static reference snippet, this <input type="checkbox"> form actually sends data to a free splitforms backend, with spam filtering built in.
Copy-paste code
HTML Checkbox code you can paste today.
Replace YOUR_ACCESS_KEY with a key from your free splitforms dashboard. The form posts to one endpoint — submissions land in your inbox and dashboard with spam filtering built in.
<form action="https://splitforms.com/api/submit" method="POST">
<input type="hidden" name="access_key" value="YOUR_ACCESS_KEY">
<label for="name">Name</label>
<input type="text" id="name" name="name" required>
<fieldset>
<legend>I'm interested in (tick all that apply)</legend>
<label><input type="checkbox" name="interest" value="newsletter"> Newsletter</label>
<label><input type="checkbox" name="interest" value="beta"> Beta access</label>
<label><input type="checkbox" name="interest" value="demo"> Product demo</label>
</fieldset>
<label><input type="checkbox" name="agree_terms" value="yes" required> I agree to the terms</label>
<button type="submit">Send</button>
</form>How it works
How to add HTML Checkbox to any page.
Copy the html checkbox example, drop in your free access key, and paste it into any page — submissions start landing in your dashboard.
Add your access key
Replace YOUR_ACCESS_KEY with a free splitforms key from the dashboard.
Paste into your site
Drop the form into any HTML page. Submissions arrive in your dashboard.
The <input type="checkbox"> element
Which HTML Checkbox attributes matter?
The <input type="checkbox"> element takes a handful of attributes — these decide how your form behaves and what actually gets emailed to your inbox when someone submits.
- name — The key the value is submitted under. Checkboxes in a multi-select group can share a name to submit an array.
- value — What's sent when the box is checked. Without it, the browser submits the literal "on".
- checked — Boolean. Pre-checks the box when the page loads.
- required — Boolean. Forces the box to be checked before the form can submit (useful for "I agree" consent).
- disabled — Greys out the box and excludes it from submission.
Common mistakes
HTML Checkbox not working? Here's why.
Most broken forms come down to a few small mistakes with the <input type="checkbox"> element. Check these before you ship — then forward every submission to Slack or a webhook.
- Unchecked = not submitted — If a checkbox is unchecked, its name is absent from the submission entirely — not sent as false. Detect this server-side as "key missing".
- Without value, you get "on" — A checked checkbox with no value= submits the string "on". Always set a meaningful value so you can tell states apart.
- Checkbox vs radio — Checkboxes are independent (tick any number); radios in a group are mutually exclusive (pick one). Use radios when exactly one choice is allowed.
How SplitForms works
From form to workflow in 3 simple steps.
Connect your form, collect every submission, and send data where it needs to go — without building backend infrastructure.
Add your endpoint
Point your form to your unique SplitForms endpoint. That's it.
Receive submissions
We instantly capture and organize every submission in your inbox.
Route anywhere
Send data to email, spreadsheets, CRMs, webhooks, and 7,000+ apps.
No credit card required. Set up in under 60 seconds.
Connect & automate
Connect your favorite tools and automate everything
SplitForms works with the destinations you route to and the platforms you build on — from Slack and Sheets to WordPress, Shopify, and Next.js.
Trusted by indie teams and agencies shipping forms worldwide
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Loved by developers shipping at every scale.
40 quotes on record — from indie hacks to agency migrations.
“I replaced a Lambda + DynamoDB + SES contact form with six lines of HTML. It took eleven minutes, and the dashboard is better than what I was going to build.”
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“Spam went from forty junk entries a day to zero, with no reCAPTCHA puzzle ruining the form. The honeypot and time-trap just quietly do their job.”
“Point the form action at one endpoint and you're done. No SDK, no client library, no build step. This is how a form backend should feel.”
“Leads land in Slack the second someone submits, and a copy goes to Google Sheets for the sales team. I wired both up in under ten minutes.”
“I run a static Hugo site on a five-dollar VPS. splitforms gave it a real contact form without me standing up a single server.”
Questions
HTML Checkbox questions, answered.
View all FAQsHow do I create a checkbox in HTML?
Use <input type="checkbox" name="agree" value="yes">, wrapped in a <label> so the text is clickable. Add checked to pre-tick it, and required to force it on (common for consent).
What value does a checkbox submit?
When checked, it submits its value= attribute. If value= is missing it submits "on". When unchecked, nothing is submitted for that name at all.
How do I let users select multiple options?
Give each checkbox the same name (e.g. name="interest") and a different value. The form then submits multiple values under that name — an array on the server side.
How do I pre-check a checkbox?
Add the checked attribute: <input type="checkbox" name="news" value="yes" checked>. It will be ticked when the page loads.
Why doesn't my unchecked checkbox submit anything?
By design — an unchecked checkbox is not included in the form data. Treat the absence of the key as the unchecked state in your backend, rather than expecting a false value.
Simple pricing
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- 500 submissions / mo
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Pay $59. 3 years sorted.
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