A format and preview guide for choosing LinkedIn ad image variants before Campaign Manager upload.
The right LinkedIn ad image workflow depends on asset role: single image ad, square feed creative, landscape feed creative, webinar promotion, guide download, SaaS demo screenshot, event ad, carousel card, or retargeting creative.
Format decisions should begin with the feed preview, not with a file extension. The best format is the one that keeps the campaign message readable and policy-safe in the placement where it will run.
Square, landscape, and vertical planning logic
Landscape 1.91:1
Useful for wide report covers, webinar panels, or brand-led Sponsored Content layouts. Plan around 1200 × 628.
Square 1:1
Often practical for mobile feed readability and balanced B2B offer layouts. Plan around 1200 × 1200.
Vertical 4:5
Can improve mobile presence, but it should be previewed carefully because vertical paid assets do not deliver to desktop.
Carousel card
Verify carousel specs separately. Do not assume single image ad specs apply to every card.
When JPG, PNG, and GIF make sense
JPG is practical for rich visuals, professional backgrounds, webinar art, and mixed creative where small artifacts are not visible. PNG is safer for UI screenshots, charts, diagrams, typography, and logos that need clean edges. GIF support exists in LinkedIn specs, but animated GIF rules and placement behavior should be checked before use; do not make GIF the default for single image ads.
Keep the source design file separate from upload copies. One universal image rarely works for the square feed asset, landscape feed asset, mobile-safe crop, retargeting variant, webinar/event variant, and landing-page matching variant.
LinkedIn ad image role decision table
| LinkedIn ad image role | What it should communicate | Best format/export logic | Crop or review risk | What to preview |
|---|---|---|---|---|
| Landscape feed asset | A wide B2B offer, webinar topic, or report cover. | Plan around 1200 × 628 and keep main text centered. | Important text or logo placed too close to wide edges. | Desktop and mobile feed previews. |
| Square feed asset | A compact offer that remains readable on mobile. | Plan around 1200 × 1200 with short copy and strong margins. | Crowded layout or too much in-image text. | Mobile feed readability and organic share crop risk. |
| Mobile-safe crop | The same offer rebuilt for small-screen scanning. | Use larger type, fewer elements, and clear contrast. | Assuming a desktop design will shrink cleanly. | Phone-size preview in Campaign Manager. |
| SaaS demo screenshot | One product outcome, workflow, or dashboard insight. | PNG when UI text, charts, and labels must stay sharp. | Private data, over-compression, and tiny screen details. | Whether the proof is readable without zooming. |
| Webinar or event variant | Topic, audience, and registration cue. | Square or landscape depending on speaker/topic composition. | Dense agendas, unsupported urgency, or date text near the edge. | Topic/date clarity in feed preview. |
| Landing-page matching variant | Same promise as the ad headline and destination page. | Export after the landing page message is final. | Mismatch between image claim and page content. | Ad image, headline, CTA, and landing page together. |
Policy and privacy still affect format choice
A clean 1200 × 1200 image can still be unsafe if it contains real customer data, private dashboard screenshots, unauthorized logos, fake testimonials, discriminatory language, or unsupported business claims. Use anonymized or fake dashboard data, make sure the creative does not imply LinkedIn endorsement, and check LinkedIn’s current advertising policies.
FAQs About LinkedIn Ad Image Size and Format
Yes, it is LinkedIn’s recommended planning size for 1.91:1 landscape single image ads, but you should still check the current spec and preview.
Square often gives a clear, balanced mobile feed layout, but performance depends on the creative, audience, offer, and placement. Preview it rather than assuming.
No. PNG is helpful for UI, charts, and text-heavy graphics. JPG can be better for rich visuals and photo-like campaign art if readability stays intact.
