Instagram & social image sizes — read from the platforms' own pages
Most "social media image sizes 2026" posts are SEO farms quoting each other. This page quotes nobody's blog: every number below was read from the platform's own help or developer documentation on 2026-11-16, and each section links the exact page so you can re-check in one click. Platforms change these rules quietly — treat the links as the living source and this article as the verified snapshot.
Key takeaways
- Instagram preserves photo widths between 320 and 1080 px when the aspect ratio is between 1.91:1 and 3:4 — at 1080 wide that means heights from 566 to 1440 px.
- Wider or taller than that? Instagram crops; smaller than 320 gets enlarged; larger than 1080 gets downscaled.
- Meta's link-share (og:image) spec: minimum 200 × 200, use 1200 × 630 at ~1.91:1, files under 8 MB.
- LinkedIn's shared-link images: 1.91:1 at 1200 × 627; X displays single images at ratios between 2:1 and 3:4 in full.
- Social sizes are pixel widths — DPI doesn't exist on platforms; your export PPI tag is ignored.
Instagram: the 1080-pixel rule, in the platform's words
Instagram's help article "Image resolution of photos you share on Instagram" is unusually precise. When you share a photo, Instagram uploads it "at the best quality resolution possible (up to a width of 1080 pixels)". A photo whose width is between 320 and 1080 pixels is kept at original resolution "as long as the photo's aspect ratio is between 1.91:1 and 3:4 (a width of 1080 pixels with a height between 566 and 1440 pixels)". If the ratio falls outside that range, "it will be cropped to fit a supported ratio". Undersized files are enlarged to a width of 320 pixels; oversized files are sized down to 1080. To guarantee full quality, the article's checklist: use the latest app, "upload a photo with a width of at least 1080 pixels with an aspect ratio between 1.91:1 and 3:4", and shoot on a good camera.
Two practical consequences. First, 1080 × 1350 (4:5) and 1080 × 566 (1.91:1) both sit inside the published supported range — portrait 4:5 uses the most screen area per the app's display habits. Second, since uploads are capped at 1080 px wide, exporting at 2000 px gains nothing on Instagram; it only costs upload time. (help.instagram.com — source)
Meta / Facebook: link images and og:image
For images that represent web pages shared into Facebook — the Open Graph image your site declares — Meta's developer documentation is the spec of record: "The minimum allowed image dimension is 200 x 200 pixels", files must stay under 8 MB, and for best display "use images that are at least 1200 x 630 pixels" with an aspect ratio close to 1.91:1 so the full image shows in Feed without cropping. Link page posts render best at 600 × 315 minimum. Same story as Instagram, different numbers: the og:image wants landscape. (developers.facebook.com — source)
LinkedIn: 1200 × 627 for shared links
LinkedIn's help article "Image specifications for your LinkedIn Pages" specifies custom images for posts containing a URL at "a 1.91:1 ratio (1200 x 627 pixels)", with images under 200 px wide demoted to a small left-side thumbnail. The same page sets Page-level assets: logos at 400 × 400 recommended (268 × 268 minimum) and cover images at 1512 × 256, with PNG/JPEG up to 3 MB. (linkedin.com/help — source)
X (Twitter): ratios, not pixel minimums
X's help centre posts fewer hard numbers than the others, but it does state the display rule that matters: "images with standard aspect ratios (between 2:1 and 3:4) will display in full" for single-photo posts — anything outside that band gets cropped in the timeline preview. File-format and size limits live in a separate help answer that the platform has reorganized more than once; rather than quote a stale third-party copy of it, we link the help article and let you read the current limit straight from X. (help.x.com — source)
What this has to do with printing
Everything and nothing. Social platforms think in pixels — the PPI tag in your JPEG is ignored entirely, which is the cleanest demonstration of the PPI-vs-DPI distinction in what DPI actually means. But there's a printing sting: an Instagram-downloaded image is at most 1080 px wide, which is 180 PPI on a 6-inch print and 90 PPI at 12 inches — under mPix's 100 PPI floor and well below Nations' 125, per lab print specs. That's why "print the photo I posted" disappoints: not because prints need some magical DPI, but because the platform already threw the pixels away. Snapfish's help makes the same observation about social-media images and small products.
Printing your original file instead? The DPI calculator turns its pixel dimensions into a verdict for any print size, and the megapixel tables show what a 4000 × 3000 original can genuinely produce.
Verified snapshot, living sources
All four platform pages were fetched and transcribed on 2026-11-16. Platforms revise these specs without notice — if a number here ever disagrees with the linked page, the platform wins. Report it to Vantoron@gmail.com and we'll re-verify.