# LinkedIn post size: images, video, documents and banners

Canonical: https://postmesh.app/blog/linkedin-post-size

By PostMesh team. Published 2026-10-26; updated 2026-10-31.

Make LinkedIn image posts 1,080 pixels wide in a shape between 3:1 and 4:5, so 1080 x 1350 for portrait or 1080 x 1080 for square, and never smaller than 552 x 276. Videos can run from 3 seconds to 15 minutes and up to 5 GB, documents up to 300 pages and 100 MB, and the profile cover image is 1584 x 396.

Every number on this page comes from two kinds of source. LinkedIn's Help Center describes what happens when you post from the LinkedIn website or app. LinkedIn's developer documentation on Microsoft Learn sets the rules for apps and schedulers that post through LinkedIn's API. The two mostly agree, but not always, and a difference between them can explain a failed upload. Where they differ, both are shown, with a note on which one applies to you. If you want the sizes for every network in one place, see the [social media image sizes guide](/blog/social-media-image-sizes).

## The short answer

For a photo post, export at 1,080 pixels wide and pick a shape between 3:1 (wide) and 4:5 (tall). The tallest shape, 1080 x 1350, takes up the most room in the feed. Square, 1080 x 1080, is the easiest to plan for graphics and multi-image posts. Keep each photo under 5 MB if you post from LinkedIn itself. For video, stay between 3 seconds and 15 minutes and under 5 GB, in MP4. For a document post, upload one PDF, PowerPoint or Word file of up to 300 pages and 100 MB, and give it a title.

**What are you posting on LinkedIn?**
- A single photo or graphic → 1080 x 1350 (4:5) or 1080 x 1080 (1:1), under 5 MB
- Several photos in one post → Up to 20 images; plan the first one carefully, it sets the layout
- A video → MP4, 3 seconds to 15 minutes, 75 KB to 5 GB
- Slides you want people to page through → A PDF document post, up to 300 pages and 100 MB

*From LinkedIn Help: share photos, share videos, and upload and share documents.*

| What you're making | Size or limit | Source |
| --- | --- | --- |
| Photo post | 1,080 px wide recommended, 3:1 to 4:5, at least 552 x 276, 5 MB per upload | LinkedIn Help: share photos |
| Multi-image post | Up to 20 photos, shown at a maximum of 4:5 | LinkedIn Help: share photos |
| Video post | 3 seconds (2 in the app) to 15 minutes, 75 KB to 5 GB, 256 x 144 to 4096 x 2304, 1:2.4 to 2.4:1 | LinkedIn Help: share videos |
| Document post | PDF, PPT, PPTX, DOC or DOCX, up to 100 MB and 300 pages | LinkedIn Help: upload and share documents |
| Profile photo | 400 x 400 to 7680 x 4320, PNG or JPG, up to 8 MB | LinkedIn Help: photo won't upload |
| Profile cover image | 1584 x 396 recommended, JPG or PNG, under 8 MB | LinkedIn Help: cover image |
| Page logo | 400 x 400 recommended, 268 x 268 minimum, up to 3 MB | LinkedIn Help: Page image specifications |
| Page cover image | 1512 x 256, up to 3 MB | LinkedIn Help: Page image specifications |
| Post text | 3,000 characters | LinkedIn API docs: UGC Post API |

If you just need a file at the right size, the free [LinkedIn photo resizer](/tools/linkedin-photo-resizer) crops a photo for a post or a profile picture, and the [LinkedIn banner resizer](/tools/linkedin-banner-resizer) makes a cover image. Both run in your browser.

## What size should a LinkedIn image post be?

LinkedIn's help article on [sharing photos](https://www.linkedin.com/help/linkedin/answer/a527229) sets out three rules for the size of a photo. It must be at least 552 pixels wide and 276 pixels tall. LinkedIn recommends 1,080 pixels wide to reach your audience better. And the shape, width to height, can be anything from 3:1 to 4:5. A photo wider than 3:1 is centered and cropped to fit. The same page warns that small, low-resolution photos may look low quality, and that a photo can't be resized or edited once it's posted.

LinkedIn doesn't publish a single recommended shape for feed photos. It gives the range and the width, and leaves the choice to you. Here is what each common shape works out to at the recommended width.

| Shape | Ratio | At 1,080 wide | What it's good for |
| --- | --- | --- | --- |
| Tall portrait | 4:5 | 1080 x 1350 | The tallest LinkedIn allows; the most feed space |
| Square | 1:1 | 1080 x 1080 | Graphics, quote cards, multi-image sets |
| Horizontal | 1.91:1 | 1080 x 565 | Wide scenes and images reused from link previews |
| Wide | 3:1 | 1080 x 360 | The widest before LinkedIn crops |

### Portrait 4:5 (1080 x 1350)

At 1,350 pixels tall, a 4:5 photo is a quarter taller than a square one and more than twice the height of a 1.91:1 photo at the same width. As people scroll, it fills more of the screen. It suits portraits, product shots, event photos taken with a phone held upright and text-heavy graphics where you want the words large.

### Square 1:1 (1080 x 1080)

Square is the safe default for designed graphics. It looks the same everywhere, it's easy to lay out text on, and it behaves predictably in multi-image posts, where LinkedIn arranges images by the shape of the first one. If you design slides that you might post either as images or as a document, square artwork works for both.

### Horizontal 1.91:1 and wide 3:1

Horizontal photos show small in a vertical feed. A 1.91:1 image is 565 pixels tall at 1,080 wide, and a 3:1 image just 360. Use these shapes when the subject really is wide, such as a stage, a skyline or a long table of people. For most horizontal photos, cropping to square or 4:5 makes the subject larger on screen.

### The 552 x 276 minimum

The minimum is a 2:1 rectangle, and both numbers apply. A 600 x 600 square passes because it's wider than 552 and taller than 276. A 500 x 500 square fails on width. A 1,000 x 250 banner fails on height, and at 4:1 it's also wider than 3:1, so it would be cropped even if it were taller. In practice, if you start from a phone photo or a design exported at 1,080 wide, you'll never come near the minimum.

- 1,080 px: Recommended width for a photo post
- 552 x 276: Smallest photo LinkedIn accepts
- 3:1 to 4:5: Shapes allowed before cropping
- 20: Most photos in one post

*Source: LinkedIn Help, share photos on LinkedIn.*

## What file types and file sizes does LinkedIn accept for images?

LinkedIn's page on [supported media file types](https://www.linkedin.com/help/linkedin/answer/a564109) lists the image formats it takes, and they depend on where you're posting from.

| Format | Desktop | iPhone app | Android app |
| --- | --- | --- | --- |
| JPEG | Yes | Yes | Yes |
| PNG | Yes | Yes | Yes |
| GIF | Yes | Yes | Yes |
| WEBP | Yes | Yes | Yes |
| HEIF and HEIC | No | Yes | No |

### Megapixels and GIF frames

The same page caps image resolution at 36 megapixels and limits a GIF to 500 frames or 36,152,320 pixels. For a sense of scale, 7360 x 4912 is exactly 36,152,320 pixels, so most phone photos and many camera photos are well under the cap. Files from very high-resolution cameras, or panoramas stitched from several shots, can go over it. GIFs aren't accepted as profile or cover photos.

### Is the limit 5 MB or 100 MB?

LinkedIn's help pages give two different numbers. The photo sharing article says each upload is limited to 5 MB. The supported file types page says a file can't exceed 100 MB, which matches its document limit. The safe reading is that 5 MB applies to photos in a post and 100 MB to documents. A 1080 x 1350 JPEG exported at high quality is usually a small fraction of 5 MB, so if you resize before uploading this rarely matters. It does matter for a full-resolution camera file or a large PNG, which can easily pass 5 MB.

> Use JPEG for photos and PNG for screenshots or graphics with sharp text. HEIC files from an iPhone only upload from the iPhone app, so convert them to JPEG if you post from a computer or schedule them with another tool.

## How do multi-image posts lay out?

One post can hold up to 20 photos. LinkedIn's photo sharing article describes how they're arranged, and the layout depends mostly on the first image, which also gets the most visual emphasis. Images are shown at a maximum shape of 4:5, which LinkedIn illustrates as 640 x 800 pixels.

### Two images

Two images sit side by side and keep their own shapes, so LinkedIn doesn't crop either one to match the other. For a pair that lines up, export both at the same size.

### Three or more images

With three or more, LinkedIn picks one of two layouts based on the first image. If the first image is horizontal, or shorter than a 4:3 shape (LinkedIn also gives this as 292 pixels), it goes across the top and the rest sit side by side underneath. If it's portrait, square or taller than that, it takes a column on the left and the others stack on the right. The container is never taller than 4:5, so images in the bottom row may be cropped. The second row takes the height of its shortest image and splits the width equally, which can crop images too.

| First image | Layout | Risk of cropping |
| --- | --- | --- |
| Horizontal, or shorter than 4:3 | First image on top, the rest in a row below | Images in the bottom row may be cropped to fit the row |
| Square, portrait or taller than 4:3 | First image in a left column, the rest stacked on the right | Images may be cropped to fit the 4:5 container |
| Two images only | Side by side, each keeping its shape | None described |

### How to plan the first image

Decide the layout first, then choose the opening image to get it. For a hero shot with supporting photos, lead with a horizontal image. For a portrait with details beside it, lead with a square or 4:5 image. Keep faces and text away from the edges of the later images, since those are the ones LinkedIn may trim. The help article lists what you can do before posting: crop, straighten, filter and adjust each photo, tag people or organizations, and add alt text. On desktop you can also duplicate, delete and add images; in the app you can add text to photos and reorder them.

1. Click the Photo icon in the share box on your homepage
2. Click Upload from computer and choose up to 20 images
3. Edit, tag and add alt text to each image, then click Next
4. Use the dropdown next to your name to set visibility and comments
5. Add your text and click Post

*The desktop steps from LinkedIn Help's article on sharing photos.*

> A LinkedIn post can carry a link or an image, but not both at once, according to the photo sharing article. If you add photos, any link in your text won't get its own preview card.

## What are LinkedIn's video specs?

LinkedIn's help article on [sharing videos](https://www.linkedin.com/help/linkedin/answer/a7486279) and its [video troubleshooting page](https://www.linkedin.com/help/linkedin/answer/a548372) give the same core limits.

| Setting | LinkedIn Help |
| --- | --- |
| File size | 75 KB to 5 GB |
| Length | 3 seconds on desktop or 2 seconds in the mobile app, up to 15 minutes |
| Resolution | 256 x 144 to 4096 x 2304 |
| Shape | 1:2.4 to 2.4:1 |
| Frame rate | 10 to 60 fps |
| Bit rate | 192 Kbps to 30 Mbps |

### Length

The 15-minute ceiling is the one people hit most. A recorded webinar or a long interview has to be trimmed or split. The minimum is short enough that it only matters for very brief clips, and it's a second lower in the app than on desktop.

### Shape and resolution

The 1:2.4 to 2.4:1 range covers every common shape: 16:9 horizontal (1920 x 1080), 1:1 square (1080 x 1080), 4:5 (1080 x 1350) and 9:16 vertical (1080 x 1920). LinkedIn's pages don't name a recommended video shape. The maximum resolution, 4096 x 2304, is a little above 4K UHD in both directions, so a 3840 x 2160 file is fine. The help article also says you can't post straight into the full-screen vertical video feed in the app; you share videos from the share box, a Group or a Page.

### Formats

The two pages disagree on formats. The supported file types page lists MP4 and MOV on desktop, iPhone and Android, WEBM on desktop and Android only, and MKV on desktop only. The troubleshooting page lists a longer set, including AVI, WMV and several older codecs, as supported everywhere. It also warns that some files, such as ProRes, may upload and then fail to process. MP4 is the format both pages list on every device, so it's the one to export.

### Captions, thumbnails and safe zones

On desktop you can upload a custom video thumbnail and add captions, either auto-generated (in 10 languages, according to the share videos article) or from a caption file you upload. In the app you can trim the video, add stickers or text, and add or review auto-captions. LinkedIn doesn't publish thumbnail dimensions on these pages. Both video pages advise keeping key elements, text and logos away from the top, bottom and sides of the frame, because LinkedIn's own buttons and labels can cover them.

**Posting on LinkedIn yourself**
- 3 seconds (2 in the app) to 15 minutes
- 75 KB to 5 GB
- MP4 and MOV on every device
- Auto-captions or a caption file

**Videos API (apps and schedulers)**
- 3 seconds to 30 minutes
- 75 KB to 500 MB in the summary specs
- MP4
- One English caption file

*Sources: LinkedIn Help, share videos on LinkedIn, and Microsoft Learn, LinkedIn Videos API.*

## How do LinkedIn document and carousel posts work?

A document post attaches a PDF, PowerPoint or Word file to a post, which makes it the way to share a slide deck or a step-by-step guide as a single post. LinkedIn's article on [uploading and sharing documents](https://www.linkedin.com/help/linkedin/answer/97459) sets the limits.

| Rule | Limit |
| --- | --- |
| File types | PDF, PPT, PPTX, DOC and DOCX |
| File size | Up to 100 MB |
| Length | Up to 300 pages |
| Files per post | One |
| Title | Required in the posting steps |
| Where you can post | Your homepage, a Group or a LinkedIn Page |
| After posting | You can edit the description or delete the post, but not change the document |

The supported file types page adds a one-million-word limit for documents. That's far more than any slide deck, but it can matter for a long report saved as a Word file.

### Preparing the file

LinkedIn's document article gives practical advice for a clean upload. Convert to PDF when you can, for the best quality. Flatten or merge PDFs that have several layers. If pages are different sizes, fit them all to one page size. Videos and animations inside a file show as still images, so a PowerPoint with transitions becomes a set of static slides. Check that links inside the PDF are secure. And because anyone who can see the post can download the document as a PDF, never include anything you wouldn't want saved and shared.

### What page size should a document post be?

LinkedIn doesn't publish a recommended page size or shape for documents. The only rule it gives is that all pages should match. A sensible choice is to design pages at one of the shapes LinkedIn accepts for photos, such as 1080 x 1080 or 1080 x 1350, so the same artwork can go out as a multi-image post if you change your mind. That's our suggestion, not a LinkedIn requirement. Whatever size you choose, use large type: slides are read on phones.

1. Click Start a post in the share box on your homepage
2. Click More, then the Add a document icon
3. Click Choose file and select one file
4. Add a title and click Done
5. Write a description and click Post

*Desktop steps from LinkedIn Help's article on uploading and sharing documents. In the app, tap Post, then More, then Document.*

### Is there a carousel post on LinkedIn?

Not as an organic post. LinkedIn's [Posts API documentation](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/posts-api) lists carousels as a sponsored format only and says organic carousels aren't currently supported. Carousel ads have their own [specifications](https://www.linkedin.com/help/lms/answer/88137): 2 to 10 cards, 1080 x 1080 recommended at 1:1, up to 4320 x 4320 pixels and 10 MB per card, in JPG, PNG or non-animated GIF. For a swipeable set of slides on your own profile without paying for an ad, the two documented options are a document post and a multi-image post.

**Document post**
- One PDF, PPT, PPTX, DOC or DOCX
- Up to 300 pages, 100 MB
- Needs a title
- Viewers can download it as a PDF

**Multi-image post**
- Up to 20 photos
- Shown at a maximum of 4:5
- Layout set by the first image
- Alt text on each photo

**Carousel ad**
- Sponsored only
- 2 to 10 cards
- 1080 x 1080, 10 MB per card
- Can't edit cards after saving

*Sources: LinkedIn Help (documents, photos), LinkedIn Marketing Solutions Help (carousel ads) and the LinkedIn Posts API.*

## What size are LinkedIn profile, cover and Page images?

Profile images follow different rules from posts, and LinkedIn Pages have their own set again. None of them accept GIFs.

| Image | Size | File |
| --- | --- | --- |
| Profile photo | 400 x 400 to 7680 x 4320 | PNG or JPG, up to 8 MB |
| Profile cover image | 1584 x 396 recommended | JPG or PNG, under 8 MB |
| Page logo | 268 x 268 minimum, 400 x 400 recommended | PNG or JPEG, up to 3 MB |
| Page cover image | 1512 x 256 minimum and recommended | PNG or JPEG, up to 3 MB |
| Life tab main image | 1128 x 376 | PNG or JPEG, up to 3 MB |
| Life tab custom modules | 502 x 282 | PNG or JPEG, up to 3 MB |
| Life tab company photos | 264 x 176 minimum, 900 x 600 recommended | PNG or JPEG, up to 3 MB |

### Profile photo

LinkedIn's article on a [profile photo that won't upload](https://www.linkedin.com/help/linkedin/answer/a549049) gives the rules: PNG or JPG, no larger than 8 MB, and between 400 x 400 and 7680 x 4320 pixels. It recommends a photo that won't need much cropping, and you can adjust it after uploading. If an upload fails, LinkedIn suggests trying another browser, then compressing the photo and trying again. Export a square at 400 x 400 or larger with your face near the center and you'll meet every rule.

### Profile cover image

The cover image, sometimes called the banner or background photo, sits behind your profile photo. LinkedIn's [cover image article](https://www.linkedin.com/help/linkedin/answer/a568217) recommends 1584 x 396 pixels, a 4:1 strip, as a JPG or PNG under 8 MB. It notes that how the image appears can change with the size of your browser window and your screen resolution, so keep important details away from the edges. It also says photos tend to look better than images with logos, and that a larger file helps if the result looks blurry or pixelated. A photo cropped for a post almost never works here without a new crop.

LinkedIn on desktop: Me › View Profile › Camera icon › Upload a photo › Apply

*From LinkedIn Help: add or change the cover image on your profile. In the app, tap your profile photo, open your profile and tap the Camera icon.*

Two details from the same article are easy to miss. A slideshow cover is a Premium feature. And when you go live on LinkedIn, the cover image changes temporarily and goes back once the stream ends, with no way to opt out.

### Company Page logo and cover

LinkedIn's [image specifications for Pages](https://www.linkedin.com/help/linkedin/answer/a563309) cover every Page image. All of them must be PNG or JPEG files of up to 3 MB, and LinkedIn suggests a high-resolution JPEG at the recommended size for the sharpest result. The logo should be 400 x 400 (268 x 268 at the least) and the cover image 1512 x 256. The Life tab images only appear if the Page has Career Pages, and a rotating cover slideshow needs a Premium Company Page subscription. Company photos on the Life tab are shown larger when someone clicks them, so use the 900 x 600 recommendation rather than the minimum.

## What image size do LinkedIn link previews use?

When a post includes a URL, LinkedIn shows a preview card with an image. The Pages image specifications recommend a 1.91:1 image for that card, or 1200 x 627 pixels. The image has to be more than 200 pixels wide. A narrower one shows as a small thumbnail on the left of the post instead of across the full width. On mobile, LinkedIn says these images aren't cropped, and other shapes are shown at full size with white padding around them.

That rule is written for posts with a link. LinkedIn says it doesn't apply to image-only or image-and-text posts, which are enlarged to fit the feed. So 1200 x 627 is the size for the image a website supplies for its links, not the size for a photo you upload. For a photo post, go back to the 1,080-wide shapes above.

## How many characters can a LinkedIn post have?

LinkedIn's [UGC Post API reference](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/ugc-post-api) states that the text of a post can be up to 3,000 characters. That's the limit apps and schedulers work to. The [LinkedIn character counter](/tools/linkedin-character-counter) shows your count as you type, and the [LinkedIn text formatter](/tools/linkedin-text-formatter) adds bold or italic styling with Unicode letters. Screen readers may read styled letters one by one, so keep the important words plain.

| Field | Limit | Basis |
| --- | --- | --- |
| Post text | 3,000 characters | Official: LinkedIn UGC Post API |
| Image alt text through the API | 4,086 characters, under 120 recommended | Official: LinkedIn Images and UGC Post APIs |
| Link URL through the API | 2,000 characters | Official: LinkedIn UGC Post API |
| Carousel ad intro text | 255 maximum, 150 to avoid truncation | Official: LinkedIn carousel ad specifications |
| Profile headline | 220 characters | Reported: not stated on a LinkedIn help page |
| About section | 2,600 characters | Reported: not stated on a LinkedIn help page |
| Comment | 1,250 characters | Reported: not stated on a LinkedIn help page |

The reported numbers are the ones LinkedIn's editor is widely reported to enforce. We couldn't find them on a LinkedIn help or developer page, so treat the editor as the final word. The [LinkedIn headline counter](/tools/linkedin-headline-character-counter) checks a headline and About section against them. Limits for every other network are in the [social media character limits guide](/blog/social-media-character-limits).

## How do LinkedIn's API limits differ from the app?

If you post through a scheduler or any other app, LinkedIn's developer rules apply instead of the Help Center ones. They're documented on Microsoft Learn, and in places they're stricter or looser than what you can do on LinkedIn yourself.

| Rule | LinkedIn Help (posting yourself) | LinkedIn API (apps) |
| --- | --- | --- |
| Image formats | JPEG, PNG, GIF, WEBP; HEIC on iPhone | JPG, GIF and PNG |
| Image resolution | 36 megapixels | Under 36,152,320 pixels |
| Image file size | 5 MB per photo | Not stated in the Images API |
| GIF frames | 500 | 250 |
| Photos per post | Up to 20 | 2 to 20 in a multi-image post |
| Video length | 3 seconds to 15 minutes | 3 seconds to 30 minutes |
| Video file size | 75 KB to 5 GB | 75 KB to 500 MB in the summary specs; 5 GB maximum upload size |
| Documents | 100 MB, 300 pages | 100 MB, 300 pages |
| Carousels | Ads only (carousel ad specifications) | Sponsored only |
| Post text | Not stated on a help page | 3,000 characters |

### Images through the API

LinkedIn's [Images API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/images-api) accepts JPG, GIF and PNG images with fewer than 36,152,320 pixels, and GIFs of up to 250 frames, half the 500 the Help Center allows. WEBP and HEIC aren't listed, so a tool that publishes through the API has to convert those first. The API page doesn't give a file-size cap for images. Alt text can be up to 4,086 characters, with under 120 recommended.

### Multi-image posts through the API

The [MultiImage API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/multiimage-post-api) allows 2 to 20 images per post, the same ceiling as the website, with the same pixel and format rules as single images. It only supports images, so you can't mix in a video, and it's for organic posts only. A sponsored post with several images uses the carousel format instead.

### Videos through the API

The [Videos API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/videos-api) summarizes its file specs as 3 seconds to 30 minutes, 75 KB to 500 MB, in MP4. The same page lists 5 GB as the maximum file size when an upload starts, and splits files into 4 MB parts. Each video can have one caption file, in English only, and an optional custom thumbnail; without one, LinkedIn may add a system-generated thumbnail. The older [Assets API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/vector-asset-api), which LinkedIn's [Share on LinkedIn](https://learn.microsoft.com/en-us/linkedin/consumer/integrations/self-serve/share-on-linkedin) guide uses for member posts, uploads videos under 200 MB in a single request and larger ones in parts.

### Documents through the API

The [Documents API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/documents-api) matches the Help Center exactly: up to 100 MB and 300 pages, in PPT, PPTX, DOC, DOCX or PDF. Whether a particular scheduler supports document posts is a separate question, so check before you build a deck around it.

**LinkedIn Help (website and app)**
- Photos: JPEG, PNG, GIF, WEBP, HEIC on iPhone
- 5 MB per photo, 36 megapixels
- Video up to 15 minutes and 5 GB
- Documents: 100 MB, 300 pages

**LinkedIn API (schedulers)**
- Images: JPG, GIF, PNG
- Under 36,152,320 pixels, 250 GIF frames
- Video up to 30 minutes
- Documents: 100 MB, 300 pages

*Sources: LinkedIn Help and LinkedIn's Images, Videos and Documents API pages on Microsoft Learn.*

The practical rule: if a file meets both columns, it works however you post it. That means a JPEG or PNG under 5 MB and 36 megapixels, a still image rather than a GIF if you can, and an MP4 video under 15 minutes.

## What happens to a file that's the wrong size?

The rules are easier to apply to real files. Here are six common starting points and what LinkedIn's published limits mean for each.

### A 4000 x 3000 phone photo

This is 4:3, about 1.33:1, inside the 3:1 to 4:5 range, and 12 megapixels, well under 36. The shape and resolution pass. The file size may not: a full-resolution phone JPEG can run to several megabytes and go over the 5 MB limit for photo uploads. Resize it to 1,080 or 1,440 pixels wide and the problem goes away. If the subject allows, crop to 4:5 so it shows larger.

### A 1080 x 1920 screenshot

This is 9:16, taller than the 4:5 limit for photos. LinkedIn's photo article only describes what happens to images that are too wide, which are centered and cropped. It doesn't say how it handles a photo that's too tall, so crop it to 1080 x 1350 yourself and choose which part to keep. If it's a screen recording rather than a still, post it as a video instead: 9:16 is inside the 1:2.4 to 2.4:1 video range.

### A 500 x 500 logo

At 500 pixels wide it's under the 552-pixel minimum for a post. Re-export it from the original file at 1080 x 1080, or place it on a 1080 x 1080 canvas with space around it. As a Page logo, 500 x 500 is fine, since that only needs 268 x 268 and recommends 400 x 400.

### A 1584 x 396 banner reused in a post

A cover image is 4:1, wider than the 3:1 limit, so LinkedIn would center it and crop the sides. If you want to announce a new cover in a post, place it on a 1080 x 1080 or 1080 x 1350 canvas instead, or crop a 3:1 section (1188 x 396 from the original).

### A 22-minute webinar recording

Posting from LinkedIn yourself, this is over the 15-minute limit. Trim it, split it into two parts, or post a short highlight with a link to the full recording. Through the API, 22 minutes is inside the 30-minute range, but the scheduler you use may set its own limit.

### A 40-slide PowerPoint with animations

Forty slides is well under 300 pages. The animations won't play: LinkedIn shows them as still images, so each build step should be its own slide if it matters. Export to PDF first, which LinkedIn recommends for quality, check the file is under 100 MB, and make sure every slide is the same size.

| Starting file | Problem | What to do |
| --- | --- | --- |
| 4000 x 3000 phone photo | May be over 5 MB | Resize to 1,080 wide; crop to 4:5 if it suits |
| 1080 x 1920 screenshot | Taller than 4:5 | Crop to 1080 x 1350, or post as a video |
| 500 x 500 logo | Under 552 px wide | Re-export at 1080 x 1080 |
| 1584 x 396 banner | Wider than 3:1 | Place on a square canvas or crop to 3:1 |
| 22-minute video | Over 15 minutes on LinkedIn | Trim, split or post a highlight |
| Animated PowerPoint | Animations show as stills | Export to PDF, one build per slide |

## Why won't my LinkedIn image or video upload?

Most failed uploads come down to one of a few causes, and LinkedIn's help pages explain them.

### The file type isn't supported

LinkedIn rejects an unsupported file type with an error. For photos, HEIC only works from the iPhone app. For video, stick to MP4. Professional formats like ProRes can upload and then fail during processing, according to the troubleshooting page.

### The file is too big or too long

Check the photo against 5 MB and 36 megapixels, the video against 5 GB and 15 minutes, and a document against 100 MB and 300 pages. Exporting at the recommended size, rather than at full camera resolution, fixes most photo problems.

### The upload stalls on an iPhone

The troubleshooting page says a video upload on iPhone can stall if you leave the LinkedIn app before processing starts. Once processing has begun, you can switch apps. Videos stored in iCloud can't be uploaded from the mobile app at all until you save them to your phone's local storage.

### Part of the video is covered

This isn't an upload error. LinkedIn's interface can sit over the edges of a video, so text or a logo near the top, bottom or sides may be hidden. Move those elements toward the center and export again.

### A profile photo won't save

Check it's a PNG or JPG, not a GIF, under 8 MB and at least 400 x 400. If it still fails, LinkedIn suggests a different browser, then compressing the photo.

**What went wrong with the upload?**
- An error about the file type → Export a JPEG or PNG photo, or an MP4 video
- The video uploaded but never finished processing → Re-export from ProRes or other pro formats to MP4
- The upload froze on an iPhone → Stay in the app until processing starts; move iCloud videos to the phone
- Text near the edge is hidden → Move it toward the center; LinkedIn's buttons cover the edges

*Based on LinkedIn Help's video sharing troubleshooting page and supported file types.*

## What does PostMesh accept for LinkedIn?

PostMesh posts to your personal LinkedIn profile through LinkedIn's official API, so it works to the API's rules plus a few limits of its own. Here's what it checks before a post goes out.

| Item | What PostMesh checks |
| --- | --- |
| Account | Your personal LinkedIn profile. Posts are public. Company Pages aren't supported yet. |
| Text | Up to 3,000 characters |
| Each post | Text only, one image, or one video |
| Images | JPEG, PNG or GIF, up to 20 MB |
| Video | MP4, MOV or WebM, 3 seconds to 30 minutes, up to 200 MB |
| Not supported | Documents and carousels, articles, polls |

To be safe on every route, keep LinkedIn videos under 15 minutes and 200 MB, and photos under 5 MB. Document posts and multi-image posts need to be made on LinkedIn directly for now. When you choose LinkedIn alongside other networks, PostMesh checks the file and the text against each one before it sends, so a caption that fits LinkedIn's 3,000 characters but not another network's limit gets flagged first. You can schedule up to 30 days ahead. The [LinkedIn page](/platform/linkedin) covers connecting, and plans are on the [pricing page](/pricing).

For the scheduling side, the [guide to scheduling LinkedIn posts](/blog/how-to-schedule-linkedin-posts) walks through your options, and the [best time to post on LinkedIn](/blog/best-time-to-post-on-linkedin) covers what published studies say about timing. If you're adapting the same post for several networks, the guide to [cross-posting to multiple platforms](/blog/how-to-cross-post-to-multiple-platforms) and the [Instagram post size guide](/blog/instagram-post-size) cover the shapes other networks prefer, and the [post checker](/tools/post-checker) tests one caption against all of them at once.

## What to check before you post on LinkedIn

A quick check before you post catches nearly every sizing problem, especially for anything scheduled to go out while you're not watching.

**Before you post on LinkedIn**
- [ ] Photo is 1,080 px wide, between 3:1 and 4:5
- [ ] Photo is JPEG or PNG, under 5 MB and 36 megapixels
- [ ] In a multi-image post, the first image sets the layout you want
- [ ] Video is MP4, 3 seconds to 15 minutes, under 5 GB
- [ ] Text and logos are clear of the video's edges
- [ ] Document is one PDF with same-size pages and a title
- [ ] Alt text describes each image
- [ ] Post text is under 3,000 characters

*Limits from LinkedIn Help and LinkedIn's API documentation.*

If you're writing the text from scratch, the [LinkedIn post generator](/tools/linkedin-post-generator) drafts a post you can edit down, and the [LinkedIn headline generator](/tools/linkedin-headline-generator) helps with the line under your name. And if you've wondered about the small dot on people's profile photos, the [LinkedIn green dot guide](/blog/linkedin-green-dot-meaning) explains what it means.

## Questions

### What is the best image size for a LinkedIn post?

1080 x 1350 if you want the most feed space, or 1080 x 1080 for graphics. LinkedIn recommends 1,080 pixels wide and accepts shapes from 3:1 to 4:5.

### What is the smallest image LinkedIn accepts in a post?

552 pixels wide by 276 pixels tall. Anything smaller on either side won't meet LinkedIn's minimum.

### Does LinkedIn crop images?

A photo wider than 3:1 is centered and cropped. In posts with three or more photos, images in the second row can be cropped to fit the layout.

### How long can a LinkedIn video be?

Up to 15 minutes when you post from LinkedIn yourself, and at least 3 seconds on desktop or 2 in the app. LinkedIn's Videos API allows up to 30 minutes.

### What's the biggest video file LinkedIn takes?

5 GB from the website or app, with a 75 KB minimum. Apps posting through the API may have lower limits of their own.

### How many pages can a LinkedIn document post have?

Up to 300 pages and 100 MB, as a PDF, PowerPoint or Word file. LinkedIn recommends converting to PDF first.

### Can I post a carousel on LinkedIn without running an ad?

Not as a carousel format: LinkedIn's API lists carousels as sponsored only. Use a document post or a multi-image post of up to 20 photos instead.

### What size is the LinkedIn profile banner?

LinkedIn recommends 1584 x 396 pixels for the cover image on a personal profile, as a JPG or PNG under 8 MB.

### What size is a LinkedIn Company Page cover image?

1512 x 256 pixels, as a PNG or JPEG of up to 3 MB. The logo should be 400 x 400.

### Can I change a photo after the post is live?

No. LinkedIn says photos can't be resized or edited after posting, so you'd need to delete the post and share it again.

## Sources

- [LinkedIn Help: Share photos on LinkedIn](https://www.linkedin.com/help/linkedin/answer/a527229)

- [LinkedIn Help: Media file types supported on LinkedIn](https://www.linkedin.com/help/linkedin/answer/a564109)

- [LinkedIn Help: Share videos on LinkedIn](https://www.linkedin.com/help/linkedin/answer/a7486279)

- [LinkedIn Help: Video sharing troubleshooting](https://www.linkedin.com/help/linkedin/answer/a548372)

- [LinkedIn Help: Upload and share documents on LinkedIn](https://www.linkedin.com/help/linkedin/answer/97459)

- [LinkedIn Help: Photo won't upload to your profile](https://www.linkedin.com/help/linkedin/answer/a549049)

- [LinkedIn Help: Add or change the cover image on your profile](https://www.linkedin.com/help/linkedin/answer/a568217)

- [LinkedIn Help: Image specifications for your LinkedIn Pages and Career Pages](https://www.linkedin.com/help/linkedin/answer/a563309)

- [LinkedIn Marketing Solutions Help: Carousel Ads advertising specifications](https://www.linkedin.com/help/lms/answer/88137)

- [Microsoft Learn: LinkedIn Images API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/images-api)

- [Microsoft Learn: LinkedIn MultiImage API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/multiimage-post-api)

- [Microsoft Learn: LinkedIn Videos API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/videos-api)

- [Microsoft Learn: LinkedIn Documents API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/documents-api)

- [Microsoft Learn: LinkedIn Posts API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/posts-api)

- [Microsoft Learn: LinkedIn UGC Post API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/ugc-post-api)

- [Microsoft Learn: LinkedIn Assets API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/vector-asset-api)

- [Microsoft Learn: Share on LinkedIn](https://learn.microsoft.com/en-us/linkedin/consumer/integrations/self-serve/share-on-linkedin)