HTML Tools

HTML Diff

HTML Diff — diff two HTML inputs and see the normalized changes. It runs entirely in your browser, so nothing is uploaded and it keeps working offline.

Client-sideRuns entirely in your browser — your data never leaves your device.

HTML Diff is a free HTML Tools utility that runs entirely in your browser — nothing you enter is uploaded.

HTML A
HTML B
Differences



  
How to use HTML Diff

  
    
      
  1. Paste the HTML you need to compare into the input box.
    2. 
      
  2. HTML Diff updates the output automatically as you type.
    3. 
      
  3. Finish by choosing Copy to take the output with you.
    4. 
  

  
About this tool

  
Everything HTML Diff does happens on your own device. HTML Diff works on HTML in your browser, transforming or previewing the markup you paste locally.

  
Your markup is never uploaded. No data is sent anywhere, so it stays fast and private by default.

  
Frequently asked questions

  

      
How do I use HTML Diff?
HTML Diff runs entirely on your device: add your input, and it compares it locally in real time.

      
Is HTML Diff free to use?
Yes — HTML Diff is completely free, with no usage limits.

      
Is my input private in HTML Diff?
Yes — your input never leaves your device; HTML Diff does all the work in your browser.

      
Will HTML Diff change my HTML structure?
HTML Diff only reformats or analyzes what you paste; the underlying structure of your HTML is preserved.

      
Does HTML Diff work offline?
Once the page has loaded, HTML Diff keeps working with no network connection.

  

  
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