QUIZ KING

Load a quiz from JSON, choose your mode, and run randomized multiple-choice questions in one calm, focused screen.

Paste a local path, public URL, or raw JSON quiz content here (or drop a .json file below)

Choose mode to start

Instructions

Quick Start

1 Provide a quiz — paste raw JSON (either a bare array or an object with questions) into the text area, enter a URL to a .json file, or drag-and-drop / upload a file. 2 Pick a mode — Practice or Test (see below). 3 Click Load Quiz (or press Ctrl+Enter). The quiz begins immediately.

Quiz Modes

Practice After each answer you see instant color-coded feedback — green for correct, red for wrong — plus the right answer highlighted. Great for learning.

Test No feedback until the end. Answer every question, then review a full scorecard with all correct and incorrect answers.

Loading a Quiz

You can load questions in three ways:

Raw JSON — paste either a bare JSON array of questions or a wrapper object (commonly under questions).
URL — enter a public URL pointing to a .json file. If you enter an .html URL the loader will also try a matching .json path automatically.
File upload — click Upload .json or drag a file onto the input area.

You can also prefill the loader by opening Quiz King with a ?url= query parameter in the page URL.

https://ethanpost.github.io/quizk.ing/index.html?url=https://example.com/quiz.json

Use url as the parameter name, and make sure the value points to a publicly accessible JSON file.

Question Format

Each question object needs a question string, an options array, and an answer that matches one of the options.

[
  {
    "question": "What is the capital of France?",
    "options": ["Berlin", "Madrid", "Paris", "Rome"],
    "answer": "Paris"
  },
  {
    "question": "Which planet is closest to the Sun?",
    "options": ["Venus", "Mercury", "Earth", "Mars"],
    "answer": "Mercury"
  }
]

If you prefer a wrapper object, put your question array under questions (and optionally add meta / metadata for the header card):

{
  "meta": { "title": "My Quiz", "author": "Me", "date": "2026-03-19", "url": "https://example.com" },
  "questions": [
    { "question": "...", "options": ["A", "B", "C"], "answer": "A" }
  ]
}

Alternatively, you can use a "correct" field instead of "answer" — either as a zero-based index into the options array (e.g. "correct": 2) or as the literal answer string. Both styles work interchangeably.

Other Details

Answer order is randomized each time you start a quiz.
Questions with fewer than two options or missing correct answers are silently skipped.
You can re-load the same quiz to get a fresh shuffle, or switch modes at any time from the start screen.
The question list can be either a bare array or a wrapper object (for example { "questions": [...] }). The loader is also tolerant of other wrapper keys as long as it can find an array of question objects.
If the top-level wrapper includes meta or metadata (with title, author, date, and/or url), those populate the "Loaded Quiz" card.