ConvertDuck

Prompt Builder

Pick a template, fill in the fields — or add your own — and assemble one clean prompt.

0 chars · 0 words · ~0 tokens (est.)

Start From a Proven Structure, Then Make It Yours

Different tasks call for different prompt shapes: a coding request needs different fields than a creative-writing brief or a question that has to stay grounded in a specific document. This tool starts you off with a template built around an established prompt-engineering pattern — a general role-and-task setup, step-by-step reasoning, few-shot examples, grounded Q&A, code, creative writing, or classification — and every field in it is yours to rename, delete, or build on. Fill in what applies, remove what doesn't, add a field the template didn't think of, then assemble the result as Markdown sections, XML tags, or plain text.

How to Build a Prompt

1. Pick a Template

Choose the template closest to your task, or start from a single blank field if none of them fit.

Switching templates replaces whatever is currently in the fields, so pick one before you start typing.

2. Fill In, Rename, or Add Fields

Type into any field, rename its label to whatever actually describes your prompt, delete the ones you don't need, or add new ones from scratch — a template is a starting point, not a fixed form.

3. Choose a Structure and Copy

Switch between Markdown Sections, XML Tags, or Plain Text depending on which model or use case you're targeting, then copy or download the result.

Why Start From a Template

  • ✓ Eight Built-In Templates

    General role-and-task, step-by-step reasoning, few-shot examples, grounded Q&A, code tasks, creative writing, and classification/extraction — each pre-filled with the fields that pattern actually needs, based on established prompt-engineering techniques rather than guesswork.

  • ✓ Every Field Is Actually Yours

    Rename any label, delete a field you don't need, or add one a template didn't include — nothing here is locked, so the template is a head start, not a constraint.

  • ✓ No Data Sent Anywhere

    The prompt is assembled entirely in your browser.

Templates & Formats

Templates General, Step-by-Step Reasoning, Few-Shot Examples, Grounded Q&A (RAG), Code Task, Creative Writing, Classification/Extraction, Blank
Fields Fully custom in every template — rename, add, or remove any field
Output formats Markdown Sections, XML Tags, Plain Text

Starting From a Template vs. a Blank Page

Feature Prompt Builder Blank Page
Getting started Pick a template built for the task Stare at a blank page and guess at structure
Clarity for the model Each part clearly labeled Instructions can blur together
Changing structure later Rename, add, or remove any field Rewrite the whole thing

Frequently Asked Questions

Q. Do I need to fill in every field? ▼
No — any field left blank is simply skipped in the final prompt, whether it came from a template or one you added yourself.
Q. Which format should I choose? ▼
XML Tags work well for models trained to pay close attention to tag-delimited sections. Markdown Sections are a readable general-purpose default. Plain Text is best when you don't want any visible structure in the final prompt. Modern models generally follow clear, direct instructions just as well without heavy tagging, so if you're unsure, Plain Text or Markdown is a reasonable first choice.
Q. Can I change a field's name? ▼
Yes — click directly on any field's label and type a new one. It updates the heading (or the XML tag name) used in the assembled prompt automatically.
Q. What happens if I switch templates after I've already typed something? ▼
Switching templates replaces the current fields with that template's set, so anything already typed is cleared. Pick your template first, or use "Blank" if you want a single field to keep building on without it being replaced later.
Q. Is my prompt saved anywhere? ▼
No — everything stays in your browser tab and is not stored or sent anywhere.