Usually, yes. Markdown is plain text, and Zizeg doesn’t run scripts in the document. By default, online images stay blocked until approved. Check link destinations before following them, as you would in an email.
Keep control of the next request.
Read on your Mac. Opening locally avoids uploading the whole file to a converter. Remote image requests are a separate choice.
Choose which images load. Check the displayed domain before approving an image. Loading it contacts that server; your current remote-content setting determines the policy.
Follow links deliberately. Zizeg asks before following a local link to an app or script. Rendering controls do not verify the claims or destinations inside a document.
Remote images start blocked under the default setting.
Try it with your Markdown.
Open a familiar file and see both views in Zizeg.
Reading is free. Editing and export require unlocking.