Why didn't photos, albums, or video thumbnails capture?
Media loads into Facebook's page separately from post text, often more slowly, so an image or video thumbnail can be missed on a fast scroll.
Written By PostSnag
Last updated About 7 hours ago
PostSnag only captures a post's photo, album images, or video thumbnail once that media has actually finished loading on your screen, and media tends to load into Facebook's page separately from a post's text, and more slowly. So it's expected that an image or thumbnail can be missing if it hadn't finished loading at the exact moment PostSnag read that post. Scrolling a little slower on media-heavy posts is the single biggest thing you can do to close this gap, and a rescan almost always fills in whatever was missed the first time.
Why this happens
Media loads on a delay. A post's caption and stats are usually available right away, but its photo, album images, or video thumbnail can take a moment longer to load in, especially on a fast scroll or a slower connection.
Albums have more to load. An album with several photos has more images competing to finish loading at once, so it's more likely than a single-photo post to have one or two images still loading when you scroll past.
PostSnag only captures what's actually finished loading. PostSnag reads media it can see has rendered at that moment. Anything still loading when that post is captured can be missed on that pass, even if it finishes loading a second later. It doesn't go back and check the same post again on its own unless it's scrolled back into view or the profile is rescanned.
Media links can be temporary. Facebook serves media through links that don't stay valid forever, so a long gap between capturing a post and exporting it to your dashboard can occasionally affect a thumbnail.
Very large albums have a cap. PostSnag stores up to 20 images per album post. If a specific album has more photos than that on Facebook, the images beyond the first 20 captured aren't included, by design, not because they failed to load.
What to do
Scroll slowly, pausing briefly on photo, album, and video posts so every image has time to fully load before you move past it.
Rescan the profile if you scrolled quickly the first time. PostSnag recognizes posts it already has, so a rescan fills gaps in existing posts without creating duplicates.
Export to your dashboard soon after capturing, rather than after a long delay, so media links are still fresh.
Keep in mind that a video post is expected to show its cover image, not the video file itself. PostSnag saves a video's thumbnail by design, so seeing a still image rather than a playable clip is normal, not a missing capture.
For a very large album, expect up to 20 images to be saved even if the album on Facebook has more; that's a fixed limit, not something a rescan changes.
How to avoid it
Slow your scroll specifically over photo, album, and video posts rather than keeping a single fast pace through the whole profile; a beat or two longer per media post is usually enough for it to finish loading. On a slower connection, build in a little extra pause throughout. Get in the habit of exporting to your dashboard shortly after a capture session instead of letting captured posts sit for a long time before syncing them up.
[Screenshot: An album post in the panel showing its captured images]
Common questions
Why does my video post only show a thumbnail?
That's expected. PostSnag saves a video's cover image, not the underlying video file, so every captured video post displays as a thumbnail rather than a playable clip.
Why is only part of an album missing, not all of it?
Album images load individually, so it's common for most of an album to capture cleanly while one or two images were still loading at the moment PostSnag read that post. A rescan usually fills them in.
Does a slower internet connection make this more likely?
Yes. A slower connection gives media less time to finish loading before you scroll past, so scrolling a bit slower helps compensate.
Is there a limit to how many photos an album can save?
Yes. PostSnag saves up to 20 images per album post. An album with more photos than that on Facebook will still capture, just capped at the first 20 images.
Will exporting again fix a missing image without rescanning?
Not on its own. Rescan the profile first so PostSnag can read the media once it's fully loaded, then export.