.HTML file extension
To open .HTML files on Windows, right-click the .HTML file and select 'Open with'.
.HTML files are web document files that can be opened using any modern web browser on your device.
Last updated: March 19, 2026 · Reviewed by Julian Stricker
Open on your device
Choose your operating system for a dedicated step-by-step opening guide.
How to open .HTML files
Use these platform-specific instructions to open .HTML files safely.
Windows
- Right-click the .HTML file and select 'Open with'.
- Choose 'Microsoft Edge', 'Google Chrome', 'Mozilla Firefox', or another web browser.
Mac
- Control-click the .HTML file and choose 'Open With'.
- Select 'Safari', 'Google Chrome', 'Mozilla Firefox', or another web browser.
Linux
- Right-click the .HTML file and select 'Open with'.
- Choose a web browser like 'Firefox' or 'Chrome' from the list.
iOS
- Tap the .HTML file in the 'Files' app.
- Select 'Open in Safari' or another compatible browser app.
Android
- Open the .HTML file using the 'Files' or 'Downloads' app.
- Select 'Chrome', 'Firefox', or another installed browser to view the file.
Security notes
- Only open .HTML files from trusted sources to avoid malicious scripts.
- Keep your web browser updated to protect against vulnerabilities.
- Disable JavaScript if unsure about the file's origin to prevent potential security risks.
Recommended antivirus software
Scan files before opening them. These antivirus tools help protect against malware and viruses.
Avast offers free and premium antivirus software that protects against viruses, malware, ransomware, and phishing. Scan files before opening them to ensure safety.
NortonNorton 360 delivers comprehensive antivirus protection, VPN, and identity theft monitoring. Scan files for threats before opening to keep your device secure.
We may earn a commission when you use affiliate links. This supports our free file extension guides.
Can't open this file?
These are the most common causes and fixes when .HTML files fail to open.
Common reasons
- HTML file does not display correctly
- HTML file opens as text
Fix steps
- Try opening the file in a different, more modern web browser.
- Check the HTML code for deprecated tags and update them.
OS-specific troubleshooting
Convert .HTML to other formats
Use conversion tools to change .HTML files into formats your software supports.
What is a .HTML file?
.HTML stands for HyperText Markup Language, which is the standard language for creating web pages. It describes the structure of web pages using markup.
Background
.HTML files are the backbone of web pages, defining the structure and layout of content on the internet. Developed by Tim Berners-Lee in 1991, HTML has evolved through various versions to support multimedia elements, scripting languages, and more complex document structures. It is widely used in web development to create websites and web applications. HTML documents can contain text, links, images, and other multimedia elements, making them versatile for displaying information online. The language is continually updated to include new features and improve web standards, with HTML5 being the latest major version that introduced significant enhancements for audio, video, and graphics.
Common MIME types: text/html
Further reading
Authoritative resources for more details on the .HTML format.
Common .HTML issues
HTML file does not display correctly
The file may contain outdated or unsupported HTML tags.
- Try opening the file in a different, more modern web browser.
- Check the HTML code for deprecated tags and update them.
HTML file opens as text
This can occur if the file is not recognized as an HTML document.
- Ensure the file extension is '.html'.
- Open with a web browser instead of a text editor.
FAQ
Can I edit an .HTML file?
Yes, you can edit .HTML files using any text editor or specialized HTML editor.
Is it possible to view .HTML files offline?
Yes, once downloaded, .HTML files can be viewed offline in a web browser.
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