How to Sign
Sign content across
every platform.
The signing process is quick, but varies slightly by platform. Here's exactly what to do for each one.
5
Signing Methods
Before you start —
Signed in to your SureMark User Dashboard
SureMark Browser Extension installed & pinned (YouTube, LinkedIn, Facebook)
Browser Extension
Sign a YouTube video
YouTube
1
Navigate to the YouTube video you want to sign in your browser.
2
Click the SureMark extension icon in your browser toolbar — a popup will appear.
3
In the popup, confirm the video details and click Sign to attach your credential.
You must be signed in to the User Dashboard for this to work
Browser Extension
Sign a LinkedIn or Facebook post
LinkedIn
Facebook
1
Click the SureMark extension icon in your browser toolbar from any page.
2
Tap the green + button — the extension will surface available assets ready to sign.
3
Select the post or asset you want to sign and confirm with your Signing Phrase.
Paste URL
Sign an Instagram or X post
Instagram
X
1
Find the post you want to sign on Instagram or X and copy its link.
2
Go to your SureMark User Dashboard and open the My Content tab.
3
Paste the link into the content field, review the details, and sign with your Signing Phrase.
Enter URL
Sign a news article or publication
NYT, AP, BBC
Forbes, WSJ
37+ outlets
1
Copy the full URL of the article or page where your content is published.
2
Go to My Content in your SureMark User Dashboard and enter the URL.
3
SureMark will fetch the content, display a preview — review it and sign with your Signing Phrase.
Drag & Drop
Sign a PDF or video file
PDF
MP4
1
Open the My Content tab in your SureMark User Dashboard.
2
Drag and drop your PDF or MP4 file directly into the upload area — or click to browse.
3
Once uploaded, confirm the file details and sign with your Signing Phrase.
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My Content is where all signing happens from the dashboard.
Log in at app.suremark.digital and navigate to My Content to get started.
Need a walkthrough?
Book a quick demo and we'll walk you through signing your first piece of content live.