Product

Preview creative markup in a constrained sandbox

Creative Preview Lab is a sandboxed first-pass preview. It is not an ad server, SafeFrame or full tracking simulation.

Input

Render a constrained first-pass preview

Paste HTML creative markup or a third-party tag, define dimensions and render it in a sandbox with basic structural observations.

Optional context for the review.

In pixels.

In pixels.

Use HTML creative for direct markup and Third-party tag for wrappers or external tags.

Paste the complete markup or tag. The preview runs in an isolated sandbox.

Optional. Used only as QA context; it does not rewrite the markup.

Optional operational context for the review.

Reset

This is a sandboxed first-pass preview. It does not reproduce a real ad server, SafeFrame or full tracking validation.

The markup is rendered locally in this browser and is not uploaded to a server.

Quick test

Quick example

Render simple HTML markup to inspect the sandbox and structural first-pass output.

Load a prepared case to understand the output.

Preview status

Sandbox ready

Paste code, define dimensions and render a first-pass preview.

Preview

Isolated preview area

300 x 250 px HTML creative Display
Preview area Paste code and select Render preview to inspect it inside the constrained sandbox.

The preview runs in an isolated iframe to protect the main page.

What it reviews

What the preview inspects

  • Scripts, iframes, links and media tags.
  • Visible macros and placeholders.
  • Declared dimensions and render state.

When to use it

When to use it

  • For a quick markup first pass.
  • Before deeper browser or platform QA.
  • To identify an obviously partial or unsafe preview.

Results

What it returns

  • A rendered, partial, blocked or empty state.
  • Detected element counts.
  • First-pass observations and limitations.

Limitations

Real limitations

  • It is not a SafeFrame or ad-server simulation.
  • External scripts may be blocked or partial.
  • Tracking and full compatibility are not verified.

Frequently asked questions

Creative Preview Lab questions

Does this reproduce real ad serving?

No. It is a constrained first-pass preview, not a real ad-server or SafeFrame simulation.