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Aperçu HTML en bac à sable

Aperçu HTML en bac à sable gives developers a fast browser preview loop for AI-generated snippets, UI fragments, configuration examples, and documentation assets.

Exemples
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Your preview will appear here.

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Envoyez cette prévisualisation vers un workflow proche pour convertir, déboguer ou exporter.

Aperçu de dégradé CSS

Preview CSS linear, radial, conic, and repeating gradients with extracted color stops.

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Aperçu d’image Base64

Preview Base64 image strings and data URLs with MIME type and size analysis.

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Aperçu CSS box-shadow

Preview CSS box-shadow values on realistic cards and compare shadow layers.

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Comment utiliser

  1. 1Paste a small focused snippet first, then replace it with your full source once the preview shape is clear.
  2. 2Use the samples to learn the expected separator or source format.
  3. 3Check warnings, visual output, and extracted structure before putting the snippet into a README, issue, or production docs.
  4. 4Keep the source together with screenshots so teammates can reproduce the result.

Cas d’usage

Review AI-generated HTML, CSS, JSON, and Base64 assets before publishing.Create lightweight screenshots for technical docs, release notes, and support answers.Debug visual snippets without switching between several unrelated tools.

Outils associés

Aperçu de dégradé CSS

Preview CSS linear, radial, conic, and repeating gradients with extracted color stops.

Aperçu d’image Base64

Preview Base64 image strings and data URLs with MIME type and size analysis.

Aperçu CSS box-shadow

Preview CSS box-shadow values on realistic cards and compare shadow layers.

FAQ

Does this send my source to a backend or AI service?

No. These P1 preview tools run locally in the browser for the supported parser path.

Is the preview a full production runtime?

No. It is a focused preview and debugging surface for common cases. Keep your browser, runtime, or production parser as the final authority.

Aperçu HTML en bac à sable is part of the DiagramPreview script and visual source preview toolbox.

It helps you close the gap between text generated by AI or copied from a project and the visual output that teammates actually review.

Use it as a quick validation step before turning snippets into docs, tickets, blog posts, or production examples.

Demo: preview an HTML component safely

An HTML sandbox is useful for checking layout, copy, and email-like snippets without running pasted scripts. It helps turn generated markup into something reviewable.

  • Keep scripts blocked when previewing untrusted snippets.
  • Test small sections before full pages.
  • Check whether inline styles or external assets are required.
<section class="notice">
  <h2>Scheduled maintenance</h2>
  <p>API writes pause for 10 minutes.</p>
</section>

Review checklist: HTML previews need responsive checks

A snippet can look acceptable at one width and fail badly on mobile. Use preview as a first pass, then verify the final page in the target environment.

  • Look for overflowing long words and URLs.
  • Check form labels and button text at narrow widths.
  • Avoid relying on scripts that the sandbox intentionally blocks.
<button style="min-width: 0; white-space: normal;">Download incident report</button>

Checklist de revue pour Aperçu HTML en bac à sable

Utilisez Aperçu HTML en bac à sable pour inspecter visuellement une source avant documentation, note de PR, post-mortem ou transfert. Preview HTML components, email snippets, and landing sections in a script-blocked sandbox.

Avant export, vérifiez la lisibilité, les relations, les données sensibles et la cohérence après modification.

Limites et dépannage

Si l'aperçu échoue, réduisez l'entrée au plus petit exemple complet, validez la syntaxe puis réajoutez les sections.

Considérez l'aperçu comme une surface de revue, pas comme une source de vérité. Les résultats critiques doivent être validés.

Exemples à tester

  • Landing section: <section style="max-width:720px;margin:0 auto;padding:48px 24px;border-radius:24px;background:white;box-shadow:0 20px 60px rgba(15,23,42,.12)"> <p style="font-weight:700;color:#256...
  • Email block: <table role="presentation" width="100%" style="font-family:Arial,sans-serif;background:#f8fafc;padding:24px"> <tr><td style="background:white;border-radius:16px;padding:24px"> <h1 ...
  • Component: <div class="card"> <style> .card{display:grid;gap:12px;max-width:420px;padding:20px;border:1px solid #e2e8f0;border-radius:16px;background:#fff} .metric{font-size:36px;font-weight:...

Maturité de l'outil

Rendu stable

Outil stable

Cet outil dispose d'une prévisualisation dédiée, d'exports utiles et d'un flux répétable dans le navigateur.

Le libellé indique si l'outil convient surtout à l'export stable, au débogage, à l'analyse rapide ou à la génération AI.