LinkedIn compte plus de 10 tailles d'images distinctes — photo de profil, bannière personnelle, logo d'entreprise, couverture d'entreprise, images de posts, couvertures d'articles, miniatures vidéo, plus une douzaine de formats publicitaires spécifiques. Importez aux mauvaises dimensions et LinkedIn recadre agressivement ou compresse jusqu'au flou. Ce guide couvre toutes les tailles LinkedIn actuelles ; le redimensionneur gratuit ci-dessous les gère toutes en un clic.
LinkedIn personal profile sizes
**Profile photo** — **400×400 px** minimum (square, displays as circle). LinkedIn supports up to 8 MB and 7,680×4,320 px but displays at small sizes; 400×400 is the sweet spot.
**Background (banner) photo** — **1584×396 px** at a **4:1 aspect ratio**. Spans the top of your profile. Bottom 1/3 gets covered by your profile photo and name — design important elements in the top 2/3.
**Profile video** (Premium) — 30-second vertical video, 1080×1920.
LinkedIn post image sizes
**Single image post** — **1200×627 px** (1.91:1 ratio) is the universal recommendation. Works on desktop and mobile without cropping.
**Vertical image post** (mobile-optimized) — 1080×1350 (4:5). Takes up more feed space on mobile, drives 30-40% higher engagement than horizontal.
**Multi-image post** (carousel) — same dimensions per slide; max 10 slides. All slides should share the same aspect ratio.
**Document (PDF) post** — uploads as document, displays first page as preview. PDF pages render at native PDF aspect ratio.
LinkedIn article + newsletter cover sizes
**Article cover image** — **1200×627 px** (1.91:1). Shows at the top of the article and as the preview when shared on LinkedIn.
**Newsletter cover image** — **300×300 px** for the subscription icon, **1200×627 px** for the article hero.
**Article inline images** — recommend 1200 px wide, any height. LinkedIn resizes for mobile but quality is best at this width.
Articles + newsletters perform 5-10× better with custom cover images. Don't skip the cover.
LinkedIn company page sizes
**Company logo** — **300×300 px** (1:1 square). Appears in the sidebar of every company page and in feed posts from the company.
**Company cover image** — **1128×191 px** (~5.9:1) on desktop. Mobile crops to 640×340. Design assuming a vertical 191-px display strip on desktop and a much shorter band on mobile.
**Life tab hero** (recruiting page) — 1128×376.
**Showcase page cover** — 1128×191, same as company cover.
LinkedIn ad image sizes (Campaign Manager)
**Single image ad** — 1200×627 px (1.91:1) standard, or 1200×1200 (1:1) for mobile-optimized.
**Carousel ad** — 1080×1080 (1:1) per slide; 2-10 slides.
**Video ad** — 1920×1080 (16:9) or 1080×1920 (9:16 mobile). 3 seconds to 30 minutes.
**Conversation ad** — 250×250 px logo only; copy carries the message.
**Message ad (InMail)** — 250×250 px logo or banner 700×100.
Common LinkedIn image mistakes
Three patterns hurt LinkedIn posts most.
(1) **Horizontal images on mobile** — 1.91:1 horizontal posts render small on mobile (where 60%+ of LinkedIn traffic lives). Use 4:5 vertical or square for mobile-first content.
(2) **Text-heavy graphics under 1200 px wide** — LinkedIn's auto-compression turns small text into mush. Always upload at 1200 px wide minimum for any image with readable text.
(3) **Branded backgrounds with profile-photo collision** — for personal banners, the bottom 1/3 gets covered. Brand marks placed there disappear.