Pinterest and Facebook both live on images, but the similarities end at the visual. A Pin is built in a tall 2:3 frame (1000 × 1500 px) optimized for a scrolling discovery feed; a Facebook post favors landscape and square crops that fill the 1200 × 630 news-feed slot. Drop a vertical Pin into Facebook without adjusting the image and Facebook auto-crops it — usually from the center — which can cut your headline text or focal point clean off the screen.
The second major delta is copy style. Pinterest descriptions are keyword-forward by design: Pinterest's own search engine treats them as signals, so creators write them like a search-engine snippet — concise, topic-dense, and often deliberately phrased with keywords. Facebook's feed is conversational and social; keyword-stuffed text reads as spam, and a long Pinterest keyword block will be collapsed under "See more" before anyone reaches the destination link. This guide walks the aspect reframe, the tone rewrite, and the link-handling fix — by hand, or composed once in SocialKit.
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Everything that changes between the two composers, side by side.
| Spec | Pinterest (from) | Facebook (to) |
|---|---|---|
| Primary canvas | 1000 × 1500 px · 2:3 (pin) | 1080 × 1350 px · 4:5 (post) |
| Caption limit | Title 100 characters · description 500 characters | 63,206 characters (feed truncates after a few lines with “See more”) |
| Video length | Video Pins from 4 seconds up to 15 minutes per Pinterest’s published specs; shorter performs better organically | Long feed uploads supported (hours); Facebook Reels are far shorter — check the composer for your account’s cap |
| Hashtags | Treated as plain keywords — Pinterest search matters more than tags | Supported but lightly used — one or two at most reads native on Facebook |
| Aspect reframe | 1000 × 1500 px — tall 2:3 vertical, optimized for Pinterest's discovery feed | Facebook auto-crops to roughly 1:1 in the feed — rebuild to 1080 × 1080 or 1200 × 630 to control the frame |
| Link in post | Pin destination URL is a core field — the Pin exists to drive outbound traffic | Paste the URL in the Facebook link field to trigger a native link-preview card; avoid burying it in caption text |
| Cover / thumbnail | Static image or Video Pin cover; tall frame is Pinterest's native canvas | Facebook feed crops tall images center-weighted; a square or landscape cover thumbnail shows without cropping |
The good news
The fine print
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Tip 1
Build one master at 1000 × 1500 and one at 1080 × 1080 from the same source file — the square version goes to Facebook, the tall version to Pinterest, and you never rely on an auto-crop to save you.
Tip 2
Lead with the link's value in the Facebook caption, not the SEO keywords: Facebook audiences click because the copy made them want to, not because the post repeats "recipe" four times.
Tip 3
For Video Pins you're cross-posting, confirm the clip length against Facebook's Reel cap in your composer before scheduling — Facebook Reels are far shorter than Pinterest's 15-minute ceiling and the limit can vary by account as of June 2026.
FAQ
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Yes — the underlying image file (JPEG or PNG) is platform-neutral and re-uploads to Facebook at its original resolution. The risk is not quality loss but framing: Facebook auto-crops tall 2:3 Pin images to fit the news feed, which can cut off elements near the edges. Export the original file and reframe it yourself rather than letting Facebook's crop decide.
It will fit — Pinterest descriptions cap at 500 characters, and Facebook accepts up to 63,206 — but keyword-dense Pinterest copy reads as robotic in Facebook's social feed. Rewrite the description as a conversational hook, front-loaded before the "See more" fold, and replace any Pinterest-style keyword repetition with a natural sentence or two about why the link is worth clicking.
No. Pinterest treats hashtags as plain searchable keywords and they drive real discovery on that platform. Facebook hashtags are used very lightly — one or two at most is the native convention, and a cluster of Pinterest-style tags reads as clutter in the news feed and adds no meaningful reach benefit.
A Pin's outbound link translates directly into a Facebook link post: paste the URL into the Facebook composer and Facebook generates a native link-preview card with a thumbnail, title, and description pulled from the destination page. This is a stronger CTA format than burying the URL in body text. If the auto-generated preview thumbnail doesn't match, you can upload a custom image to override it.
Compose once, customize the caption per network, and let SocialKit publish to Pinterest, Facebook, and 9 more platforms on schedule — no re-uploading, no copy-paste.
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