Fill in the fields and watch a live Facebook mockup update as you type. Nothing you enter leaves this browser tab.
Three steps, no sign-up
- Fill in your details
Add name, avatar, text, images, video. Everything stays local to this tab. - Watch the mockup update
The Facebook card re-renders on every keystroke, showing where the feed cuts your text. - Check every view
Toggle desktop, tablet, mobile to confirm the post still lands everywhere.
Why previewing your Facebook post matters
A preview brings your copy, page or profile details and media into one feed-style view. Use it to catch awkward spacing, check the balance between text and media, and see where Facebook adds "See more" before anyone else does. The cut moves between desktop, tablet and mobile, so check all three widths.
How Facebook arranges your images
Upload one image or many and the preview arranges them the way the feed does: 1, 2, 3 or 4+ image layouts with a "+N more" overlay. A post can carry up to 10 images, 4 MB each, or a single video up to 4 GB; images and video cannot be mixed in one post.
Facebook limits the preview checks
| Field | Limit | Note |
|---|---|---|
| Post text | 63,206 | - |
| Images per post | 10 | 4 MB each |
| Video per post | 1 | alone, up to 4 GB |
Finish polishing before you publish
- Facebook Text Formatter
- Facebook Hook Generator
- Facebook Image Resizer
- Facebook Image Size Checker
- Facebook Image Sizes Guide + Checker
- All free Facebook tools
- Facebook growth
Your post looks right. Now get it seen.
A clean post earns the first look. Real reactions and comments are what keep it in front of your friends and followers.
Frequently asked questions
Where does Facebook add "See more"?
It depends on the device width. The preview simulates the cut on desktop, tablet and mobile.
How many images can a Facebook post have?
Up to 10 images, 4 MB each, or one video up to 4 GB. Images and video cannot be mixed.
Does the preview show multi-image layouts?
Yes: 1, 2, 3 and 4+ image grids with the "+N more" overlay.
Is the preview pixel-perfect?
It is a close approximation of the Facebook layout, not an official rendering. Real rendering can vary by device and app version.
Is my text or image uploaded anywhere?
No. Everything is processed in your browser.
How long can a Facebook post be?
63,206 characters; longer posts are cut with "See more" at a point that depends on the screen.
What image sizes work on Facebook?
1200 x 630 for posts, 820 x 312 for the cover and 1080 x 1920 for stories.
