UD5 Toolkit
<dialog> Modal Generator - Online Native HTML Modal
Build an accessible modal using the native <dialog> element. Customize backdrop, content, and open/close logic. Copy the code.
Story Prompt Generator - Online Creative Writing Inspiration
Story Prompt Generator
Ignite your creativity with random, one‑of‑a‑kind writing prompts in seconds.
Your story prompt will appear here...
No favorites saved yet. Click the heart to save a prompt.
Frequently Asked Questions
A story prompt is a short phrase or idea designed to spark creative writing. It can suggest a character, setting, conflict, or twist to help you overcome writer’s block and start a new story.
Choose a genre (or “All Genres”) and a prompt type (simple one‑liner or a detailed breakdown). Then click “Generate Prompt” — a unique prompt appears instantly. Use the copy, favorite, or tweet buttons to keep or share it.
Our generator mixes hundreds of character, setting, and conflict elements — each click gives a fresh combination. You can narrow results by genre, but the exact wording is randomly assembled to keep creativity flowing.
Yes! Every prompt is freshly generated from a large pool of narrative building blocks. While themes may resemble common tropes, the specific wording and combinations are unique to each generation.
Absolutely. Click the heart icon to save a prompt. All favorites are stored locally in your browser and can be viewed anytime by opening the “My Favorites” panel. They stay even after you close the page.
Yes, the layout is fully responsive and works beautifully on phones and tablets. All buttons and controls adapt to smaller screens for a smooth writing‑inspiration experience anywhere.
Placeholder Image Generator - Online Dummy Image Creator
Generate custom placeholder images for mockups and layouts. Specify dimensions, colors, and text. Export as PNG or use the generated data URI. Entirely browser-based.
Sound Effect Generator - Online Create 8-bit & Retro Noises
Generate classic retro sound effects (coin, jump, explosion) using oscillators and noise. Play and download as WAV. Web Audio API fun.
Vanilla JS Plugin Builder - Online Template Generator
Get a clean, commented JS plugin skeleton with IIFE or ES module pattern. Start your new library faster.
License Key Generator - Online Serial & Product Code Maker
Generate random license keys or serial numbers in various formats (XXXX-XXXX-XXXX). Useful for software activation testing. Local generation.
Custom Paint‑by‑Numbers Generator – Online from Photo
Upload a photo to create a numbered painting canvas with color swatches. Print and paint. Local only.
List Style CSS Generator - Online Custom Bullet & Counter
Design custom unordered and ordered lists with images, strings, or counters. Preview and copy the CSS.
SRT Subtitle Creator - Online Add Timestamps
Create .srt subtitle files manually by adding lines and setting times with a simple player. Download the result. Local.
@counter‑style Generator - Online Custom List Markers
Design a custom counter style with symbols, range, and speak‑as. Preview ordered lists with your new style. Export the CSS rule.
Online Code Editor (HTML/CSS/JS) - Instant Live Preview
Write HTML, CSS, and JavaScript in separate panes and see the result in real time. Store your snippets locally.
CSS Opacity & RGBA Generator - Online Transparency Tool
Adjust opacity visually with a slider and see the different CSS representations (opacity property vs RGBA/HSLA). Copy best option.
HTML Template Element Demo - Online Clone & Use
Use the <template> tag to hold hidden HTML that is cloned and injected by JavaScript. Common pattern.
Web Crypto Key Generator - Online Generate RSA/EC Keys
Generate cryptographic key pairs using the Web Crypto API. Export as JWK or raw. No server needed; pure security.
Noise Texture CSS Generator - Online Grain & Grunge
Generate a subtle or heavy noise/grain texture as a CSS background. Adjust intensity and color. Copy the small code.
SVG Sprite Generator - Online Combine Icons into One
Upload multiple SVGs and combine them into a single SVG sprite sheet with `<symbol>` and `<use>`. Fast icon system.
Batch QR Code Generator - Online Multiple Codes at Once
Paste a list of URLs or texts and generate QR codes all at once. Download as individual images or a single sheet.
Invoice Number Generator - Online Sequential & Random
Generate the next sequential invoice number with optional prefix and date stamp. Keep track locally or export.
Kubernetes Deployment YAML Generator - Online K8s Spec
Fill in container image and ports. Generate a Deployment and Service YAML with best practices. Start your K8s journey.
SVG Morphing Playground – Online Smooth Path Transformation
Paste start and end SVG paths with the same number of points and preview a smooth morph animation. Copy SMIL code.
Online Audio Recorder - Record Voice & Export WAV
Record audio from your microphone and export as a WAV file. Monitor levels. Processed entirely in your browser.
Online Audio Recorder - Record Voice & Export WAV
Record audio from your microphone and export as a WAV file. Monitor levels. Processed entirely in your browser.
Add Line Numbers - Online Number Text Lines Tool
Number each line of your text sequentially. Customize start number and format. Useful for code snippets, tutorials, and document review. Private operation.
Web Serial Terminal - Online Connect to Microcontroller
Connect to a serial device (Arduino, etc.) via the Web Serial API. Send and receive text. No native app needed.
JSON to YAML Converter - Online Data Serialization Tool
Convert JSON data structures to clean, human-readable YAML. Indentation and formatting preserved. All processing done locally for your privacy.
Lorem Ipsum Image - Online Dummy Photo Placeholder
Generate a grey placeholder image with custom text and dimensions. Data URI output. No external service.
<selectlist> New HTML Element Demo - Online Rich Select
Test the upcoming <selectlist> element for a fully customizable, stylable select dropdown. Experimental browser feature.
Kitchen Timer - Online Multiple Preset Countdowns
Run multiple named timers simultaneously for cooking. Presets like pasta, rice, etc. Audio alarm. Works in background.
Area Converter - Online Square Feet & Acre Hectare Tool
Convert between square meters, square feet, acres, hectares, and more. Essential for real estate and land measurements. Instant results, private data.
SVG to CSS Mask Converter - Online Non‑Destructive Mask
Convert an SVG shape into a CSS mask‑image. Transparent regions become masked. Great for custom image crops. Client‑side.
Stopwatch & Countdown Timer - Online Dual Tool
Dual-function tool: a precise stopwatch with laps and a configurable countdown timer with alarm sound. Works offline, perfect for activities.