Compare HTML side by side
Upload two HTML files and review the highlighted differences in a clean split view.
Privacy-first processing every time
WizardOfAZ tools do not need registrations, no accounts or sign-up required. Totally Free.
- Local only: There are many tools like Text tools, some CSV tools, List tools etc. that are only processed on your browser. Data and Documents are transformed on your machine, so nothing is sent to our servers.
- Transparent progress: Watch the processing banner appear as soon as work begins and know exactly when it completes.
- Clear safeguards: Every tool links directly to our privacy policy and has been reviewed for accessibility.
- Secure Process: Some Tools need to be processed in the servers so the Old Wizard processes your files securely on our servers, keeping them for up to 1 hour so your tool can finish its work—after that, they are automatically deleted after 1 Hour.
“The wizard does everything I need. I can merge sensitive PDFs without a second thought.”
— Morgan, legal operations lead
What is HTML Diff Checker?
HTML Diff Checker is a free web diagnostic from WizardOfAZ. Use it to check HTML markup for common problems as part of your auditing and monitoring, without installing extra software.
Popular ways to use HTML Diff Checker
- Streamline auditing and monitoring by using HTML Diff Checker to check HTML markup for common problems.
- Share deliverables faster—processed web resources are ready for download in seconds.
- Combine HTML Diff Checker with other WizardOfAZ tools to keep complex workflows in one browser tab.
Examples and workflow tips
- Upload a sample file, cast the spell to check HTML markup for common problems, and download the processed result instantly.
- Bookmark the HTML Diff Checker in your browser so recurring tasks stay only one click away.
- Share the spell with teammates who need a quick, no-install way to check HTML markup for common problems.
Frequently asked questions
Is the HTML Diff Checker secure?
Yes. The HTML Diff Checker runs entirely in your browser, which means your site data never leave your device.
What can I do with the HTML Diff Checker?
You can auditing and monitoring by processing web resources without uploading them to an external service.
Can I use HTML Diff Checker on mobile?
Yes. WizardOfAZ tools are responsive, so you can launch the spell on desktops, tablets, or phones without installing extra apps.
Related tools to explore
Expand your toolkit with other WizardOfAZ spells that complement HTML Diff Checker:
- Broken Link Checker — Use it to check web resources for common problems.
- Cookie Viewer — Use it to work with web resources using flexible options.
- DNS Lookup — Use it to work with web resources using flexible options.