HTML Cleaner Online Tool

You can use AI to quickly create code to process your HTML, or enter your own custom JavaScript if you prefer full control.
Example ideas for HTML processing:

• remove all styles and classes from HTML
• make HTML responsive (adapt to the device screen size)
• change every strong tag to h1 tag
• extract inline CSS from tags that repeat in the HTML and put it in the main style tag
• generate table of contents for h1 to h6 tags and add it at the top of my HTML

Pre-process means that you run the code before the cleanup options, find and replace and manage tags processing.

Advanced tip: You can 'chain' HTML processing by generating different code in the pre-processing editor and copying it to the post-processing editor as many times as needed.

If you know JavaScript, you can write your own code to process HTML. In JavaScript code, you have to use the 'html' variable name. Below you can see some code examples:
Replace first occurrence of 'xxx' word with 'yyy' word: html = html.replace("xxx","yyy");
Replace all p tags with span tags with regexp: html = html.replace(/<p([^<>]*)>(.*)<\/p>/g,"<span$1>$2</span>");
Remove all p tags with inner content with regexp: html = html.replace(/<p[^<>]*>(.*)<\/p>/g,"");
Advanced example - match inner text of all tags and replace start " with <blockquote> and end " with </blockquote>:
html = html.replace(/>([^<>]+)</gi, function(m, p1) { return ">" + p1.replace(/([^<>"]*)"([^<>"]*)"/gi, '$1<blockquote>$2</blockquote>') + "<"; } );