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Available block types

NodumForms offers 13 block types — 11 for collecting answers and 2 for displaying static content between questions.

Text inputs

Short Text — A single-line text field. Use for names, titles, URLs, or any brief text. Shows a smart placeholder based on the question (e.g. "John Smith" for name fields).

Long Text — A multi-line text area. Use for messages, descriptions, feedback, or any longer-form text input.

Choice blocks

Multiple Choice — Radio buttons for single selection. Add as many options as you need. Options can be reordered by dragging.

Single Select — Button-style option cards shown all at once, one pick only. A visually distinct alternative to Multiple Choice when you want each option to feel like a prominent action.

Checkbox — Checkboxes for multiple selection ("select all that apply"). Use this when respondents can pick more than one option. Options can be reordered by dragging.

Dropdown — A compact select menu that collapses into a single line. Best when you have many options and want to save vertical space. Respondents click to expand and pick one option.

Rating

Rating — A number scale (default 1–5, configurable up to 10). Respondents click a number to rate. Great for satisfaction scores, NPS, and quality assessments.

Binary

Yes / No — Two large buttons for a simple binary choice. Use for consent questions, confirmations, or any yes/no scenario.

Contact fields

Email — An email input with built-in format validation. Submissions are rejected if the email format is invalid.

Phone — A phone number input. Accepts any format — no strict validation, so international numbers work fine.

Special blocks

File Upload — Let respondents attach files. Supported formats: PDF, DOC, DOCX, PNG, JPG, JPEG, GIF, WEBP. Default limit: up to 5 files per submission, 5MB each. Both limits are tweakable per block in the block settings panel.

Display blocks

Not every block collects an answer. Two are for context, not input:

Display text — A heading + body paragraph rendered inline between questions. Useful for section dividers, instructions, or legal copy. Text alignment is configurable.

Display image — Drop a hosted image into the form (URL + alt text). Great for branding banners, diagrams, or option swatches inside long surveys.

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Required fields and validation

Control which questions are mandatory and how answers are validated.

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FAQs

There's no hard cap, but very long forms (50+ blocks) load more slowly for respondents. For long surveys, consider switching to One Per Page so each question loads incrementally.

Yes. Open the Logic tab in the builder to write rules like "if the rating is less than 5, show the follow-up question" — show or hide questions, jump between pages, or end the form early based on answers. Rules re-evaluate live as respondents answer, and a built-in health check warns about conflicts or questions that can never appear.

File Upload is a Pro feature, but during beta it's unlocked for everyone. After beta, you'll need a Pro plan to add a File Upload block.