Attribute Cleaner
HTML attribute remover online. Remove inline styles, data attributes, classes, or empty attributes. Clean HTML code free in your browser.
0 chars 1 lines
Input
0 lines · 0 chars
Loading editor...
Cleaned Output
0 lines · 0 chars read-only
Loading editor...
Features
- Remove inline styles from HTML
- Strip data attributes (data-*)
- Remove all classes or specific class names
- Clean ID attributes
- Remove event handlers (onclick, onload, etc.)
- Selective attribute removal with preview
Common Use Cases
- Clean up HTML copied from Word or Google Docs
- Remove inline styles before applying CSS frameworks
- Strip tracking attributes from email HTML
- Prepare HTML for sanitization or security
- Clean legacy HTML with outdated attributes
HTML Attribute Cleaning
HTML attribute cleaning is the process of selectively removing attributes from HTML elements. This is useful for cleaning up messy HTML, removing inline styles, stripping tracking code, or preparing HTML for sanitization.
Common attributes to remove:
- style: Inline CSS styles that should be in stylesheets
- data-*: Custom data attributes used for JavaScript or tracking
- class: CSS classes (remove all or specific ones)
- id: Element identifiers (when standardizing HTML)
- Event handlers:
onclick,onload, etc. (security risk)
Why clean attributes?
- Security: Remove potentially malicious inline scripts and event handlers
- Performance: Smaller HTML file size without bloated inline styles
- Maintainability: Separate styling from structure (HTML vs CSS)
- Standardization: Remove vendor-specific or deprecated attributes
Use cases:
- Rich text cleanup: Remove formatting from WYSIWYG editors
- Email templates: Strip tracking pixels and analytics attributes
- Content sanitization: Remove potentially dangerous attributes before displaying user-generated HTML
- CSS refactoring: Remove inline styles to migrate to external CSS
Examples
Valid - HTML with Inline Styles
<div style="color: red; font-size: 16px;">Styled text</div> Valid - Tracking Attributes
<a href="/page" data-track="click" data-analytics="btn-click">Link</a> Valid - Event Handlers
<button onclick="alert('clicked')">Click me</button>Frequently Asked Questions
Will this break my page styling?
If you remove inline styles without external CSS, yes. Make sure you have CSS stylesheets to replace the inline styles before removing them.
Why remove data attributes?
Data attributes are often used for tracking, analytics, or JavaScript functionality. Removing them can improve privacy, reduce HTML size, or prepare HTML for different contexts.
Can I remove specific classes only?
Yes, most attribute cleaners allow you to specify which classes to remove (e.g., all Bootstrap classes) while keeping others. This tool removes all or none—for selective removal, use find/replace.
Why remove event handlers like onclick?
Inline event handlers are a security risk (XSS attacks) and violate Content Security Policy (CSP). It's best practice to attach events via JavaScript instead of inline attributes.
Can I clean HTML from Word or Google Docs?
Yes! HTML copied from Word or Google Docs often contains excessive inline styles, classes, and proprietary attributes. Cleaning them gives you cleaner, more manageable HTML.
💡 Tips
- Remove inline styles when migrating to CSS frameworks like Tailwind or Bootstrap
- Strip data-* attributes to remove tracking code and improve privacy
- Always remove event handlers like onclick for better security and CSP compliance
- Clean Word/Google Docs HTML before using it in web pages—it contains bloated proprietary markup