What size is used for a Facebook post image here?
This page uses a 1200 × 630 preset, which fits the common wide social-share style used for many Facebook post graphics.
Can I use this for landscape graphics?
Yes. The preset is already landscape, so it works especially well for wide product, blog, event, and promo visuals.
Is any server-side processing involved?
No. The resizing and export stay inside the browser for a local-only workflow.
Why 1200 x 630 rather than a square?
1200 x 630 is the 1.91:1 frame Facebook uses for the large link preview and for shared images in the feed. It is also the size the Open Graph og:image tag expects, so one export covers both cases.
What happens if the image is smaller than 600 x 315?
Facebook drops the large image card and renders a small square thumbnail next to the link text instead, which is a much weaker unit in the feed. 600 x 315 is the floor and 1200 x 630 is the recommended size.
Can I use this file for a Facebook ad?
For a feed ad, yes as a starting point, but Meta's ad placements also want 1080 x 1080 and 1080 x 1920 variants. A single 1.91:1 file will be cropped in stories and Reels placements.
Does the 20 percent text rule still apply?
Meta retired the hard rejection rule, so a text-heavy image is no longer blocked. It can still hurt delivery and cost in paid placements, which is a reason to keep type large and sparse rather than dense.
Facebook is still showing my old image. What now?
That is the scraper cache, not the file. Run the URL through Facebook's sharing debugger and scrape it again so it picks up the new og:image.
