UD5 Toolkit
HTML Attribute Remover - Online Clean Up Markup
Strip specific or all attributes from HTML tags. Clean up messy code. Keep the structure. Purely local.
CSS‑Only Accordion Builder - Online No JavaScript FAQ
CSS‑Only Accordion Builder
Build a beautiful, SEO‑friendly FAQ accordion using pure HTML & CSS — zero JavaScript required. Uses the native <details> element with full style customization.
Add FAQ Item
Your FAQ Items
3No FAQ items yet. Add one above!
Style Settings
Preset Themes
Accent Color
#4f46e5
Background
#fafbfc
Text Color
Border Color
Icon Style
Border Radius
Live Preview
Generated HTML & CSS
Copy and paste this into your HTML file. No JavaScript needed!
About CSS‑Only Accordions
What is a CSS‑only accordion?
A CSS‑only accordion uses the HTML5 <details> and <summary> elements to create expandable content panels without any JavaScript. It's lightweight, accessible, and SEO‑friendly since all content is in the DOM at page load.
Is it SEO‑friendly?
Yes! Unlike JS‑based accordions that may hide content with display:none, the <details> element keeps all text in the HTML source. Search engines can crawl and index all FAQ content, even when collapsed.
Can I add animations?
Yes — our builder includes a max‑height transition hack. By wrapping content in a div and transitioning max-height from 0 to a large value on details[open], you get a smooth expand/collapse effect in pure CSS.
Browser support?
<details> is supported in all modern browsers: Chrome, Firefox, Safari, Edge (including mobile). It's part of the HTML5 Living Standard. For IE11, a small polyfill may be needed.
Password Pwned? Checker - Online k‑Anonymity
Check if a password appears in the Have I Been Pwned database using k‑Anonymity. Only the first 5 characters of the hash are sent.
WHOIS Domain Lookup - Online Ownership & Expiration Check
Check WHOIS information for any domain: registrar, expiration date, and name servers. Quick and private using public WHOIS data aggregators.
Setlist Builder – Online Drag Songs into Order & Time
Drag songs into a setlist and see total duration. Perfect for planning a concert or DJ set.
One‑Page Resume Builder - Online Simple CV Generator
Fill in a form to generate a clean, ATS‑friendly one‑page resume. Customize sections, colors, and export as print‑ready PDF. Personal data stays in your browser.
Bookmarklet Code Builder - Online Convert JS to Bookmark
Write a JavaScript snippet and get a ready‑to‑drag bookmarklet link. With minification and encoding. Easy browser tools.
CSS Subgrid Layout Builder - Online Align Nested Grids
Design a layout where nested grids share track sizes with their parent via subgrid. Copy the complete CSS.
WCAG Safe Palette Builder - Online Accessible Color Sets
Start with a base color and generate an extended palette where every shade contrasts properly with white and black. Export tokens.
CSS Grid Layout Builder - Online Visual Drag & Drop
Add rows and columns, merge cells, and set gaps visually. Get the grid‑template CSS and HTML. Fast layout prototyping.
CSS Transition Playground - Online Visual Easing Curve Builder
Choose a property, duration, and bezier curve. Trigger the transition and see the animation. Copy the complete CSS rule.
Cocktail Builder - Online What Can I Make?
Select the ingredients you have at home and see a list of cocktails you can make. Surprise yourself. Local database.
Scroll‑Driven Carousel Builder - Online CSS-Only Slider
Construct a CSS‑only carousel with scroll‑snap and scroll‑driven animations. Configurable gap, items, and progress indicator. Copy the HTML/CSS.
Advanced CSS Gradient Builder - Online Multi‑Stop & Angle
Create complex linear gradients with any number of color stops, exact angles, and length units. Live preview and CSS code.
Atom Builder 2D - Online Create Elements with Protons/Electrons
Drag protons, neutrons, and electrons onto a Bohr model template. See the element change. Educational tool.
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.
Elevator Pitch Builder - Online Structured Intro
Craft a 30‑second elevator pitch by filling in problem, solution, and ask. Copy the final professional text.
Decision Tree Builder - Online Visual Yes/No Path
Build a simple decision tree by adding yes/no nodes. Flowchart style. Export as text outline.
FAQ Page Schema Generator - Online JSON-LD for Rich Results
Enter your FAQ questions and answers, and get ready‑to‑paste JSON-LD structured data. Boost search appearance.
CSS Grid Playground - Online Interactive Layout Builder
Experiment with CSS Grid properties visually. Add rows, columns, and areas. See the grid in action and copy the code.
Yoga Sequence Builder - Online Drag & Drop Poses
Build a yoga flow by dragging pose cards into a sequence. Pose reference images included. Print or share your flow.
GraphQL Query Builder - Online Visual Construct Request
Build a GraphQL query by selecting fields and nesting visually. Copy the built query string. For learning and fast prototyping.
Venn Diagram Builder - Online 2‑ & 3‑Set Overlap Visualizer
Create simple 2‑ or 3‑set Venn diagrams by entering comma‑separated lists. Shareable via URL fragment. No account.
Crossword Builder - Online Create & Solve Simple Puzzles
Build a small crossword by adding words and clues. Export as a printable grid or solve in browser. Perfect for classrooms.
Query String Parser & Builder - Online URL Params Editor
Parse a URL's query string into a key-value table, or build a query string from parameters. Perfect for API testing and web development.
RegEx Tester - Online Regular Expression Builder & Matcher
Build and test regular expressions against sample text. Real-time match highlighting, capture groups display, and flavor options. All inside your browser.