Remove inline styles, empty tags, CSS classes, HTML comments, and unnecessary span elements from dirty HTML. Ideal for cleaning up markup pasted from Word, Google Docs, or email clients.
When content is pasted from Microsoft Word, Google Docs, LibreOffice, or email clients into a CMS or html editor online, it brings along enormous amounts of proprietary markup: inline style attributes with font sizes and colours, class names that reference stylesheets that don't exist outside Word, empty paragraph tags, non-breaking spaces ( ), and dozens of redundant <span> elements. This bloats your HTML, breaks your site's visual design, and makes the markup nearly unmaintainable.
style="font-size:11pt;font-family:Calibri;" and similar attributes that Word embeds on every paragraph. These override your CSS stylesheet and are the primary cause of paste-from-Word visual breakage.<p></p>, <span></span>, and similar elements with no content. Word generates dozens of these as paragraph separators.<!-- --> blocks that Word, Outlook, and some HTML editors leave in the source code.class="MsoNormal", class="MsoBodyText") that have no effect outside Word.<span> tags used by Word to apply character-level formatting. After removing inline styles, these are structural noise. entities used by Word as artificial indentation or spacing.Email HTML requires even stricter cleaning than web HTML. Email clients (Gmail, Outlook, Apple Mail) strip CSS <style> blocks and support only inline styles. Pasting from Word into an email editor produces malformed output that renders differently across clients. Cleaning with this tool, then applying inline styles manually or using an email CSS inliner, produces consistent cross-client rendering. Every HTML email also needs a plain-text alternative — use our html to text converter to generate the plain-text MIME part automatically.
No. The cleaner only removes attribute values (style, class, id) and specific tag types (span, empty tags, comments). It does not modify block-level structural tags like <p>, <div>, <h1>–<h6>, <ul>, <table>, or any content text. Select only the options you need — if in doubt, start with just "Remove inline styles" which is safe for all HTML.
No. All cleaning is performed using JavaScript regular expressions in your browser. Your HTML is never sent to any server. This means the tool works at any size, with no upload limits, and with complete privacy — suitable for proprietary or confidential content.
The cleanest workflow is: (1) Copy your Word content. (2) Paste into the Word to HTML converter by dropping the .docx file — this uses mammoth.js to extract clean semantic HTML without any Word-specific markup. Alternatively, paste text into a plain text editor first to strip all formatting, then add HTML structure manually. As a last resort, paste raw HTML into this cleaner with all options enabled.
Yes. PHP's strip_tags() removes all or specific HTML tags. For attribute-level cleaning, use a DOM parser: $dom = new DOMDocument(); $dom->loadHTML($html); then iterate nodes and remove attributes with $node->removeAttribute('style'). The HTMLPurifier library provides a comprehensive, security-focused HTML cleaning solution and is the recommended approach for sanitising user-submitted HTML on the server.