Stacklar Forms

Stacklar Forms adds a form builder to the block editor. Each form is a set of field blocks that you add, arrange and style like any other block. You then place the form on any page or post with its shortcode, such as [stacklar id="123"].

Fields

Text, Name, Email, Phone, URL, Number, Textarea, Select, Radio, Checkbox, Acceptance, Hidden, Section, HTML and Submit.

The Phone field shows a country picker with dial codes.

After a submission

Stacklar Forms emails each submission. You choose the recipients, subject, message and Reply-To address; {{all_fields}} in the message lists every submitted field, and {{your_field_name}} inserts a single one. You can also set the success and error messages shown on the form.

Submissions are sent by email only; they are not stored on your site.

Spam protection

Forms come with a hidden honeypot field and a minimum time before they can be sent, both on by default, plus an optional per-visitor rate limit. They run on your own server: Stacklar Forms does not load scripts from, or send data to, any outside service.

Stacklar Forms Pro

Stacklar Forms Pro adds more fields, multi-step forms, conditional logic, stored entries, payments and integrations. It uses the same forms, so you can switch at any time: activate Stacklar Forms Pro and Stacklar Forms steps aside.

Source code

The plugin ships the unminified JavaScript and styles in the src/ folder. The build/ folder is generated from them with npm ci && npm run build (webpack through @wordpress/scripts; see package.json and webpack.config.js).