UD5 Toolkit
CSS‑Only Accordion Builder - Online No JavaScript FAQ
Configure and generate a pure CSS accordion with details/summary styling. Copy the HTML/CSS. Accessible and lightweight.
HTML Attribute Remover - Online Clean Up Markup
HTML Attribute Remover
Paste your HTML code below, choose what attributes to strip, and get clean, lightweight markup instantly. All processing is local and private.
Options
data-* to strip all data attributes.
Frequently Asked Questions
It removes HTML attributes you don't need (like
class, style, id, custom data attributes) from your markup while keeping the structure intact. You can strip everything or choose exactly what to remove or keep.Absolutely. All processing is done inside your browser – no HTML is ever uploaded to a server. Your code stays private and secure.
Yes! Enable “Always preserve essential attributes” to protect
href, src, alt, and title. You can also use the “Keep only specific attributes” mode to define your own whitelist.Using
data-* as an attribute name will match every attribute that starts with data- (like data-toggle, data-index). This lets you strip all custom data attributes in one go.It uses the browser’s built‑in HTML parser, so it handles real‑world markup (even if slightly invalid) gracefully. Only attributes are removed; element structure, text content, and comments are left untouched.
Check the “Remove attributes with empty values” option. It will delete any attribute whose value is an empty string (e.g.,
disabled="" or readonly="").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.
Popover API Demo - Online No‑JS Tooltips & Menus
Test the new HTML popover attribute for creating accessible tooltips, menus, and dialogs without JavaScript. Copy code snippets.
Mailto Link Generator - Online HTML Email Link
Build a complex mailto: link with to, cc, bcc, subject, and body. Get the HTML anchor tag. Local.
Random Kid’s Joke Generator - Online Clean Laughs
Get a random, clean, and silly joke perfect for children. Guaranteed giggles. No offensive content.
Remove Empty Lines - Online Clean Up Whitespace
Paste text and delete all empty or whitespace‑only lines. Collapse unused space. Perfect for code or prose. Local.
Remove HTML Tags - Online Strip Code Cleaner
Paste HTML and instantly remove all tags, leaving only the text content. Optional keep line breaks. Quick cleaning.
HTML Headings Outline Generator - Online From Webpage
Enter a URL and see a nested list of all headings (h1‑h6). Check your document structure for SEO and accessibility. Pure fetch.
Remove Duplicate Words - Online Text Cleaner
Paste a sentence and remove repeated words (keep first occurrence). For cleaning auto‑generated text. Local.
HTML Comment Extractor/Remover - Online Strip Comments
Paste HTML code and extract all comments or remove them completely. See a list of comments found. Clean your markup.
CSV to HTML Table - Online Generate Responsive Code
Paste CSV and get a beautiful HTML table with sortable headers (optional). Copy the full HTML/CSS snippet. Local.
HTML Fragment to PDF - Online Print Custom Section
Write or paste an HTML snippet and generate a PDF using the browser's print engine. Customize page size and margins.
HTML Table to Markdown Converter - Online Quick Transform
Paste an HTML `<table>` snippet and instantly get a clean Markdown table. Supports colspan and alignment hints. Local.
!important Remover - Online Clean Up Overqualified Rules
Paste your CSS and strip all `!important` declarations in one click. See a list of affected rules. Local tool.
Text to Definition List - Online Term/Description HTML Maker
Enter terms and definitions and generate a clean `<dl>` HTML snippet. Great for glossaries and FAQs.
Text to Ordered List - Online Automatic Numbering HTML
Paste lines of text and automatically convert to an HTML ordered list with correct numbering and indentation.
File Name Sanitizer - Online Remove Invalid Characters
Paste a string and get a clean, safe file name by replacing forbidden characters. Works for Windows, Mac, Linux.
HTML Minifier - Online Compress Web Pages
Reduce your HTML file size by stripping whitespace, comments, and optional closing tags. Secure browser‑based.
Audio Silence Remover - Online Strip Quiet Parts
Remove silent parts from an audio recording. Useful for podcasts and lectures. Set threshold and minimum silence duration.
HTML Includes Previewer - Online Simulate SSI Includes
Paste multiple HTML snippets (header, footer) and a main content, then combine them into a single preview. Static site helper.
Screen Reader Test Snippet - Online Check HTML ARIA Labels
Paste an HTML snippet and see how a screen reader might interpret it. Highlights missing alt texts and ARIA misuses. Educational.
Karaoke Echo Remover - Online Simple Audio Cleanup
Reduce reverb and echo from a vocal recording using a basic noise gate and filter. Quick cleanup for bad room acoustics.
Email Signature Generator - Online Professional HTML Footer
Design a clean, professional email signature with your photo, links, and disclaimers. Copy the HTML to use in Gmail/Outlook.
HTML Sanitizer - Online Clean Dangerous Tags & XSS Prevention
Strip dangerous HTML tags and attributes (scripts, onclick) to prevent XSS attacks. Safe iframe preview. Local sanitation engine.
Text to List Converter - Online Bulleted or Numbered HTML
Convert plain text lines into HTML ordered or unordered lists. Instantly copy the generated HTML to paste into your website. No hassle, fully browser-based.
Remove Line Numbers - Online Clean Code Snippet Tool
Strip leading line numbers from code snippets or poetry. Quick and accurate. Restore the original text. Entirely local processing, no data upload.
Remove Line Breaks - Online Single Line Converter
Remove all line breaks and turn multi-line text into a single continuous string. Optionally replace line breaks with spaces. Fast and secure local tool.
HTML to Markdown Converter - Online Clean Content Extractor
Strip HTML tags and convert web content to plain Markdown. Preserve headings, lists, and links. Perfect for content migration. All processing in browser.
Markdown to HTML Converter - Online MD to Webpage Tool
Convert Markdown text into clean HTML code. GitHub Flavored Markdown supported. Copy the raw HTML or preview the rendered output instantly. No uploads.