How to use the HTML Viewer
- Paste or write your HTML in the editor.
- See the rendered output appear in the preview panel.
- Edit the HTML and watch the preview update as you type.
What is an HTML Viewer?
An HTML Viewer is an online tool that turns HTML code into a visual browser preview. Paste a snippet or a complete HTML document into the editor to see its rendered output without creating or publishing a separate file.
This tool works with HTML you provide directly. To retrieve the source code of a public webpage from its URL, use View Source instead.
Code view vs rendered preview
| HTML editor | Rendered preview |
|---|---|
| Shows the HTML markup you paste or write | Shows the visual output produced from that markup |
| Lets you inspect and edit tags, attributes and content | Lets you check layout, text, links, images and forms |
| Highlights the structure of your code | Updates automatically when the HTML changes |
| Useful for debugging and learning HTML | Runs inside a sandboxed preview with scripts blocked |
The preview can differ from a published webpage when the original depends on external styles, scripts, fonts, APIs or application-specific data.
What can you inspect in HTML?
You can review elements such as:
- Document structure
- Headings and paragraphs
- Links and images
- Lists and tables
- Forms and controls
- Metadata in a complete document
- Inline styles
- Script and stylesheet references
Use the HTML Extractor when you want supported elements organized into separate lists rather than reading the code directly.
Why can an HTML preview look incomplete?
The rendered output may look different from the original webpage when:
- External stylesheets, fonts or images cannot be loaded
- JavaScript is required, because scripts are blocked in the preview
- Relative asset paths do not point to the original website
- The pasted snippet depends on styles defined elsewhere
- The original page uses an application framework or API data
- Content requires cookies or an authenticated session
- Browser security policies restrict an external resource
Sandboxed HTML preview
SolViewer renders your HTML inside a sandboxed preview that is isolated from the main page. JavaScript is blocked, so script tags and inline event handlers do not execute in the viewer.
HTML can still reference external images, stylesheets, fonts or other resources. Those resources may be requested by your browser when they appear in the rendered preview.
When should you use HTML Extractor or View Source?
Use the HTML Extractor when your goal is to list links, images, headings or metadata from supplied markup.
Use View Source to retrieve HTML from a public webpage before pasting or editing it here.
Common uses
- Preview a small HTML snippet
- Inspect a saved HTML document
- Check whether markup is nested as expected
- Review links, images or forms before implementation
- Compare code changes without publishing a page
- Teach or learn basic HTML structure
Frequently asked questions
Does the HTML Viewer fetch a live webpage?
No. This tool previews HTML that you paste or write in the editor. Use View Source when you want to retrieve HTML from a public webpage URL.
Does the preview update automatically?
Yes. The rendered output updates as you edit the HTML, so you can compare your code and its visual result side by side.
Can the HTML preview run JavaScript?
No. JavaScript is blocked in the sandboxed preview. HTML and CSS can render, but scripts and script-based interactions will not run.
Why does my preview look different from the original website?
The original page may depend on external CSS, JavaScript, frameworks, API data, fonts or authentication that are not available in the viewer.
Can I paste a complete HTML document?
Yes. You can paste either an HTML snippet or a complete document, including its doctype, head and body.