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HTML Studio

Available

Edit complete HTML documents with a live preview that runs inside an isolated browser sandbox.

Devary does not upload or persist your HTML.
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HTML document

1530 chars

Live preview

Synced

Console

0

Console capture is available in Interactive mode. Safe mode keeps scripts disabled.

HTML Intelligence

One local analysis powers the DOM tree, diagnostics, SEO/metadata, resources and static accessibility review.

13 elements0 errors0 warnings
  • <!doctype html>L1:1
  • <html>L2:1
    lang="en"
    • <head>L3:3
      • <meta>L4:5
        charset="utf-8"
      • <meta>L5:5
        name="viewport"content="width=device-width, initial-scale=1"
      • <title>L6:5
      • <style>L7:5
    • <body>L46:3
      • <main>L47:5
      • <script>L56:5

Safe mode blocks active content

JavaScript, network connections, external frames, objects and form submissions are blocked. Inline CSS plus data/blob media can still render.

A focused HTML document workspace

Paste or write a complete HTML document, edit it with CodeMirror and see the rendered result update immediately beside the source.

Isolation is part of the feature

Preview content runs in a sandboxed iframe rather than inside the Devary application DOM. Safe mode blocks scripts and network-capable resources by default.

Developer guide

Debug complete HTML documents in an isolated preview

HTML Studio provides formatted editing, a sandboxed preview and document diagnostics. Learn what the preview executes and what it cannot prove.

Practical workflow

  1. Configure

    Load a complete HTML document and choose a safe preview mode. Inspect the DOM, resources and diagnostic panels.

  2. Try it

    Format or conservatively minify source while comparing the result with the rendered preview and console.

  3. Check the result

    Review SEO and accessibility findings as development checks; then confirm behavior in your own target browser and deployment.

Worked examples

Preserve visible separation while minifying

Conservative minification keeps spacing between inline elements instead of concatenating visible words.

Configuration

Conservative minify

Example input

<main>  <span>A</span> <span>B</span> </main>

Expected result

<main> <span>A</span> <span>B</span> </main>

Preserve preformatted content

Content inside preformatted blocks remains unchanged, including its indentation and newline.

Configuration

Preserve preformatted content

Example input

<pre>  line 1
  line 2 </pre>

Expected result

<pre>  line 1
  line 2 </pre>

Limits and safeguards

Supported scope

A sandboxed preview is not your deployment environment. Resource policies and external scripts may behave differently.

Before using in production

Automated SEO and accessibility findings are heuristics, not a full compliance or security assessment. Do not trust arbitrary embedded scripts.

Common question

Does a clean preview guarantee correct production HTML?

No. Check your final application for responsive rendering, resource loading, accessibility and security policies.