HTML Viewer: Preview HTML Safely in Your Browser Online
HTML Viewer is a browser-based HTML preview tool that renders pasted or dropped markup live in a fully isolated sandbox iframe. Scripts are disabled by default, so untrusted markup cannot run code; you can enable them only at your own risk, with a visible warning. Inspect the parsed view, copy what you need, and keep your HTML on your device.
HTML Viewer is a browser-based HTML viewer and preview tool for rendering pasted or dropped markup live. It places the document in a fully isolated sandbox iframe, giving you a rendered view to inspect without working through every line of source. Use it to review HTML and copy the parts you need.
The tool accepts HTML input and renders it in the iframe. Scripts are disabled by default, so untrusted markup cannot run code in the preview. If you choose to enable scripts, do so at your own risk; a visible warning is shown. The key configurable behavior described here is whether scripts are enabled or disabled.
HTML is markup that describes a document's structure, while a rendered view presents that structure as browser content rather than source text. HTML Viewer does not convert the markup into another data format; it helps you move from reading source to inspecting the rendered document. That can be useful when you want to understand unfamiliar HTML or check a snippet before working with it.
HTML Viewer runs entirely in your browser: your input is processed on your device and nothing is uploaded, stored, or sent to a server. It works offline once the page has loaded, with no server dependency. Developers and DevOps engineers can use it to inspect HTML, review unfamiliar documents, and copy the excerpts they need.
Step 1: Paste or drop your HTML into the viewer to load the markup you want to inspect.
Step 2: Review the rendered, parsed view in the sandboxed iframe to see the document as browser content.
Step 3: Keep scripts disabled for untrusted HTML; if you choose to turn them on, read the visible warning and proceed at your own risk.
Step 4: Copy the part of the document you need after reviewing it.
Use case: Inspect an HTML document you did not write and find difficult to read as source code. The rendered view can make its content easier to review.
Use case: Check the structure of an HTML value before writing code that consumes it. Previewing the markup gives you a quick way to inspect the document.
Use case: Copy a clean excerpt from a large HTML document. Review the rendered view and take the part you need.
Use case: Preview a small HTML snippet while developing a page. The live rendering helps you inspect the markup without reading every line as source.
Use case: Review HTML from an unfamiliar source before examining it. Scripts are disabled by default, and enabling them displays a warning.
Use case: Inspect pasted or dropped HTML when you need a rendered view rather than another format conversion.