Share a comparison with the right context and privacy checks.

Choose a local file or an interactive link

Copying an image or downloading a file does not itself publish it. Pasting it into email, a chat service or another website sends the image to that destination under that service's rules.

Prepare two captures that can be compared

1. Save the Before and After captures in the same Chrome profile, then open Compare from the editor or History. Compare requires Pro and at least two saved captures.
2. Select the intended images from the Before and After menus.
3. Read the compatibility notice. Match capture mode, viewport width and display scale. Selected-area captures also need matching geometry.
4. Use the frame navigation on long captures to choose the part you actually want to send.

Differences needs a reliably aligned view of the same page. A compatible cross-page pair, such as staging and production at different URLs, can use Reveal Slider or Side by Side while pixel differences remain unavailable. A different layout width or device scale can create misleading changes.

Inspect both images before uploading

• Check names, email addresses, account information, private URLs and content visible behind overlays.
• Move the reveal slider all the way across both images, or inspect Side by Side. Content hidden by the slider is still part of the shared Before or After image.
• If either frame contains information you should not upload, do not use Share Link. Share a separately exported and checked image instead, or retake the source page with suitable non-sensitive data.
• Check the comparison title too. Do not put confidential project or customer details in a share title.

Blur and pixelation are visual masking, not certified irreversible redaction. For a secret that must never be disclosed, keep it out of the screenshot or crop it out of the exact flattened file you intend to send. Original local captures and backups can still contain it.

Create the comparison link deliberately

1. With the correct frame selected and checked, press Share Link.
2. Read the upload disclosure when it appears. It explains that two WebP images, the Before and After images for this frame, will be sent to RATdeck. Accept only if that is what you intend.
3. The ready dialog shows the link and its expiration. The link is copied automatically when clipboard access succeeds; Copy link is also available.
4. Send the link only to the intended recipients. Anyone who obtains it can view the shared frame until access expires or is revoked.

The disclosure choice can be remembered on the device. A later press of Share Link may proceed without repeating the dialog, so treat the button itself as the decision to upload. Simply opening Compare or moving the slider does not upload pixels.

On a long comparison, the link contains the selected frame, not every frame of the whole page. Use local Export Full Comparison if you need a file-based review of the full comparison; very tall output may be split into numbered parts.

Understand expiration and revocation

Comparison links expire after seven days. The link-ready dialog includes Revoke link to end access earlier and request removal of the uploaded images. Use that control while the dialog is available, and wait for its success message.

Expiration or revocation cannot recall a screenshot or file a recipient already saved. These links are access-by-link, not an invitation system with named-user permissions or a password. Do not treat an opaque URL as permission to share confidential material.

Local History and shared images are separate. Deleting a local screenshot is not the documented way to revoke its link. If you need help with a link you can no longer manage, contact support; avoid reposting the sensitive link in a public forum.

If sharing or comparison is unavailable

• Compare is locked: confirm your Pro account and entitlement are active. Local processing does not remove the account requirement for Pro features.
• No suitable pair: take two captures with matching mode, viewport and scale. Read the compatibility notice rather than forcing a misleading pixel comparison.
• Differences is disabled: use Reveal Slider or Side by Side for compatible captures from different pages. For pixel differences, use aligned captures of the same page.
• Upload did not finish: check connectivity and the on-screen error. Do not assume a working link exists until the ready dialog confirms it.
• Link is unavailable: it may be expired, revoked or invalid. Ask the creator for a new link only if sharing that content is still appropriate.

See the privacy policy for what is transmitted and retained. Normal local capture, editing, comparison and export remain separate from this optional upload.

Questions about comparison sharing

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