Reference

LinkedIn post limits

Keep a LinkedIn post under 3,000 characters, a video between 3 seconds and 15 minutes, an image under 5 MB and a multi-photo post at 20 photos or fewer, and LinkedIn will take it. Each figure below is linked to the LinkedIn page it came from and dated 30 September 2026, and where LinkedIn's pages disagree, every figure is shown.

Every figure checked 30 September 2026.

LinkedIn post character limit

A post can be up to 3,000 characters.

LinkedIn's help centre states the figure on three separate pages, once with a comma and twice without, and the legacy posting API states it a fourth time. A Page post goes through the same share box and gets no separate number. The help centre also says what to do past the limit, which is rare: a post over 3,000 characters becomes an article instead. Two details it leaves open are worth knowing. A link longer than 26 characters is shortened once you click Post, and LinkedIn does not say whether the long or the short form counts. And a post carries a link or an image, never both.

linkedin.com/help, linkedin.com/help, linkedin.com/help, linkedin.com/help (checked 30 September 2026)

LinkedIn hashtag limit

LinkedIn publishes no maximum number of hashtags on a post, only a recommendation of three to five for Pages, and caps a Page post at 40 mentions.

The hashtag help articles that search engines still list for LinkedIn returned not-found pages on the check date, so the only official hashtag figures are the ones that remain. LinkedIn's guide for Pages recommends identifying three to five hashtags and adding them when relevant. A hard cap of three exists in one place only, Trending Employee Content on a Page's Life or What We Do tab, and does not apply to a feed post. Mentions are different: LinkedIn's Page post troubleshooting page says a post must have 40 or fewer, and publishes no count for a member's own post.

business.linkedin.com, linkedin.com/help, linkedin.com/help (checked 30 September 2026)

LinkedIn article character limit

An article is limited to 125,000 characters by one LinkedIn page, and has no word-count limit by another.

Both pages sit in LinkedIn's help centre and both were last updated years before the check, so this page shows the two side by side. The 125,000 figure appears on the page that explains the difference between a post and an article; the no-limit wording appears on the page about writing articles, which adds that the best-received ones run past three paragraphs. The article editor documents the cover image at 1920 by 1080, cropped to 16:9, in JPEG, JPG, PNG or WEBP, while an older FAQ still recommends 2000 by 600 and caps an in-article image at 10 MB. Newsletters are their own product: five at a time, an unlimited number of editions, and a two-week wait after creating or deleting one.

linkedin.com/help, linkedin.com/help, linkedin.com/help, linkedin.com/help, linkedin.com/help (checked 30 September 2026)

LinkedIn video length limit

A video can run from 3 seconds to 15 minutes by LinkedIn's video specifications page, 10 minutes on the mobile app by its article editor page, and up to 30 minutes through the Videos API.

The 15-minute figure is on the page LinkedIn maintains for native video specifications, with a 3-second floor on desktop and a 2-second floor in the mobile app. The article editor page carries an upload table it labels as the same as the share box, and that table splits the ceiling into 15 minutes on desktop and 10 on mobile. The Videos API, which a scheduling tool publishes through, allows 30 minutes. An older help page about Page and Career Page videos, four years stale on the check date, says 10 minutes flat. Four LinkedIn pages, four ceilings, all printed.

linkedin.com/help, linkedin.com/help, learn.microsoft.com, linkedin.com/help (checked 30 September 2026)

LinkedIn video file size and format

A video file can be 75 KB to 5 GB in MP4, MOV, WEBM or MKV, though the Videos API's own specification says 500 MB and MP4 only.

The help centre's video specifications page sets the file at 75 KB minimum and 5 GB maximum, and the file types page lists MP4 and MOV for every platform, WEBM for desktop and Android, and MKV for desktop alone. The Videos API disagrees with the help centre and with itself: its specification section says 75 KB to 500 MB and MP4 only, while its upload step on the same page allows 5 GB. The specifications page also bounds the picture: 256x144 to 4096x2304, an aspect ratio anywhere from 1:2.4 to 2.4:1, 10 to 60 frames per second, and a bit rate from 192 Kbps to 30 Mbps. An unsupported file type is refused with an error message.

linkedin.com/help, linkedin.com/help, learn.microsoft.com, linkedin.com/help (checked 30 September 2026)

LinkedIn image size limit

An image can be up to 5 MB and 36 megapixels, at least 552 by 276 pixels, with an aspect ratio from 3:1 to 4:5.

LinkedIn's photo post page carries the size cap, the pixel floor and the ratio range in one place, and adds two behaviours: 1080 pixels wide is recommended, and an image outside the ratio range is centred and cropped rather than refused. The file types page lists GIF, JPEG, PNG and WEBP for every platform and HEIF or HEIC for iOS, and sets the resolution ceiling at 36 megapixels. A multi-photo post takes up to 20 photos, which the MultiImage API confirms with a floor of 2. A link post's preview image is a separate rule, 1.91:1 at 1200 by 627. The one figure LinkedIn cannot settle is the GIF: 500 frames on the file types page, 250 in the Images API, fewer than 400 in the article editor.

linkedin.com/help, linkedin.com/help, learn.microsoft.com, linkedin.com/help (checked 30 September 2026)

LinkedIn document post limit

A document post can be up to 100 MB and 300 pages, in PPT, PPTX, DOC, DOCX or PDF.

This is the limit LinkedIn states most consistently. The help centre's document page and the Documents API on Microsoft Learn give the same size, the same page count and the same five file types, word for word apart from a contraction. The file types page repeats 100 MB and 300 pages and adds a word count of one million, without saying which upload the word count applies to; since the other two figures match the document limits, the word count most likely belongs to documents as well, but LinkedIn does not say so and neither does this page.

linkedin.com/help, linkedin.com/help (checked 30 September 2026)

LinkedIn scheduled post window

A member can schedule a post from 10 minutes to 3 months ahead, and a Page from 1 hour to 3 months ahead.

The two windows share a far end and differ at the near one. The member's scheduling page allows anything from ten minutes to three months out, rounded to the nearest interval; the Page's allows an hour to three months. The Page scheduling page also lists what cannot be scheduled from a Page at all: events, multiple photos, reshares, polls, jobs and service posts. A multi-photo post from a Page therefore has to be published by hand or through the API. LinkedIn also says, without a number, that it may limit how many posts a member or Page can make in a period, and that excessive posting or a detected automation tool can reduce a post's visibility.

linkedin.com/help, linkedin.com/help, linkedin.com/help, linkedin.com/help (checked 30 September 2026)

Every limit, in one table

Each value is quoted from the LinkedIn page it links to, checked 30 September 2026. A limit LinkedIn does not publish is recorded as not documented rather than filled in from a third-party figure.

LinkedIn post limits, each value linked to its source and checked 30 September 2026.
What is limitedWhat LinkedIn documents
post character limit3,000 characters ('You can create a post and share updates using the share box at the top of your LinkedIn homepage. The character limit for a post is 3,000 characters.')A LinkedIn Page posts through the same share box, and no Page-specific figure is published. The legacy ugcPosts API states the same ceiling: 'The maximum length of the text of a UGC Post is 3,000 characters.' See https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/ugc-post-api. Links longer than 26 characters are shortened once you click Post, see https://www.linkedin.com/help/linkedin/answer/a521889; whether the shortened or the original length counts is not stated.

www.linkedin.com (checked 30 September 2026)

hashtag limitNot documented (no LinkedIn page states a count; LinkedIn's Pages guide recommends 'Identify 3-5 hashtags that are top of mind for your organization and add them to your posts when relevant.')A cap of three exists only for Trending Employee Content on a Page's Life or What We Do tab: 'You can add up to 3 hashtags.' See https://www.linkedin.com/help/linkedin/answer/a551407.

business.linkedin.com (checked 30 September 2026)

mention limit on a Page post40 mentions ('Make sure your post has 40 or fewer mentions.')LinkedIn publishes no mention count for a post from a member's profile.

www.linkedin.com (checked 30 September 2026)

article character limit125,000 characters ('Articles are typically longer than posts and are limited to 125,000 characters.')A second LinkedIn page describes the ceiling differently: 'There are no limits on word count, but the articles that are best received are more than three paragraphs.' See https://www.linkedin.com/help/linkedin/answer/a516913. Authors can run up to five newsletters at a time, see https://www.linkedin.com/help/linkedin/answer/a517925.

www.linkedin.com (checked 30 September 2026)

article cover image1920 x 1080 pixels, cropped to 16:9, in JPEG, JPG, PNG or WEBP ('The optimal image size for the cover image is 1920 (w) x 1080 (h) pixels. Cover images are cropped to a 16:9 aspect ratio.')An older LinkedIn page states a different size: 'The optimal image size for the cover photo is 2000 (width) x 600 (height) pixels.' and caps an in-article image at 10 MB. See https://www.linkedin.com/help/linkedin/answer/a522463.

www.linkedin.com (checked 30 September 2026)

video length limit3 seconds to 15 minutes ('Maximum video duration: 15 minutes Minimum video duration: 3 seconds when uploading from desktop and 2 seconds when uploading from the LinkedIn mobile app.')The article editor's upload table states 'Maximum duration 15 minutes (desktop)/ 10 minutes (mobile app)', see https://www.linkedin.com/help/linkedin/answer/a521719. The Videos API states 'Length: Three seconds to 30 minutes.' See https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/videos-api. A Page and Career Page video article, last updated four years before the check, states 'Max video duration - 10 minutes Minimum video duration - 3 seconds', see https://www.linkedin.com/help/linkedin/answer/a1311816.

www.linkedin.com (checked 30 September 2026)

video file size limit75 KB to 5 GB ('Maximum file size: 5 GB Minimum file size: 75 KB')The Videos API states 'File size: Between 75kb and 500MB.' in its specification section and 'Maximum allowed Videos size is 5GB.' at the upload step, both on the same page. See https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/videos-api.

www.linkedin.com (checked 30 September 2026)

video file typesMP4, MOV, WEBM and MKV, by platform ('Video File Type/Codecs Desktop iOS Android MP4 MOV WEBM MKV')MP4 and MOV upload from desktop, iOS and Android; WEBM from desktop and Android; MKV from desktop only. The Videos API accepts one format: 'File format: MP4.' See https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/videos-api. An unsupported type is refused: 'You can't upload an unsupported file type and you'll get an error message if you do so.' See https://www.linkedin.com/help/linkedin/answer/a548372.

www.linkedin.com (checked 30 September 2026)

video resolution, aspect ratio and frame rate256x144 to 4096x2304 pixels, 1:2.4 to 2.4:1, 10 to 60 frames per second, 192 Kbps to 30 Mbps ('Resolution range: 256x144 to 4096x2304 Aspect ratio: 1:2.4 - 2.4:1 Frame rates: 10fps - 60 fps Bit rates: 192 Kbps - 30 Mbps')

www.linkedin.com (checked 30 September 2026)

image file size limit5 MB ('The size limit for an upload is 5 MB.')The same page sets the floor: 'Photo must be at least 552 (w) x 276 (h) pixels, but we recommend 1080 (w) pixels to better connect with your audience.' The ceiling in pixels is on the file types page: 'The maximum resolution for images is 36 mega pixels.' See https://www.linkedin.com/help/linkedin/answer/a564109.

www.linkedin.com (checked 30 September 2026)

image aspect ratio3:1 to 4:5 ('The photo's aspect ratio can range from 3:1 to 4:5 (width:height). If the ratio is larger, the image will be centered and cropped to fit the max ratio.')A link post's preview image follows a different rule: 'Use a 1.91:1 ratio (1200x627 pixels). The image must be more than 200 pixels width.' See https://www.linkedin.com/help/linkedin/answer/a566445.

www.linkedin.com (checked 30 September 2026)

image file typesGIF, JPEG, PNG and WEBP, plus HEIF/HEIC on iOS ('GIF HEIF/HEIC JPEG PNG WEBP')A GIF is capped three ways on three LinkedIn pages: 'The limit for a GIF is 500 frames or 36,152,320 pixels.' here, 'GIF format supports up to 250 frames' in the Images API (https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/images-api), and 'GIFs must be smaller than 400 frames.' in the article editor (https://www.linkedin.com/help/linkedin/answer/a521719).

www.linkedin.com (checked 30 September 2026)

photos per post20 photos ('You can upload a maximum of 20 photos in a multi-photo post.')The MultiImage API states a minimum of 2 and a maximum of 20, see https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/multiimage-post-api. A post carries a link or an image, not both: 'You can share either a URL link or an image in a post, but not both at the same time.'

www.linkedin.com (checked 30 September 2026)

document post limit100 MB and 300 pages, in PPT, PPTX, DOC, DOCX or PDF ('The file size cannot exceed 100MB and 300 pages. The following file types are supported: PPT, PPTX, DOC, DOCX, and PDF.')

www.linkedin.com (checked 30 September 2026)

scheduled post window10 minutes to 3 months ahead for a member ('The time selected must be within 10 minutes to 3 months from the current time (rounded to the nearest interval).')A Page's window opens later: 'You can schedule a post anywhere between an hour from the current time to three months in advance.' See https://www.linkedin.com/help/linkedin/answer/a1419179. Some post types cannot be scheduled on a Page at all: 'You can't schedule events, multiple photos, reshares, polls, jobs, and service posts for your Page.' See https://www.linkedin.com/help/linkedin/answer/a548192.

www.linkedin.com (checked 30 September 2026)

  • LinkedIn's help centre sets a post at 3,000 characters, a multi-photo post at 20 photos, an image at 5 MB with a 3:1 to 4:5 aspect ratio, and a document post at 100 MB and 300 pages (accessed 30 September 2026). linkedin.com/help, read 30 September 2026
  • LinkedIn's video specifications page sets a video at 3 seconds to 15 minutes and 75 KB to 5 GB, 256x144 to 4096x2304 pixels and 10 to 60 frames per second; its Videos API on Microsoft Learn allows 30 minutes and states 500 MB in one section and 5 GB in another (accessed 30 September 2026). linkedin.com/help, read 30 September 2026

What happens past each limit

LinkedIn states three consequences in plain words. A post over 3,000 characters is offered the article editor instead. An image whose aspect ratio falls outside 3:1 to 4:5 is centred and cropped to fit, not refused. A video in an unsupported file type is refused with an error message. The posting APIs name their own errors: a text field that is too long returns FIELD_LENGTH_TOO_LONG on the current Posts API and a 422 on the legacy one, an exact duplicate of a post made in the last ten minutes is rejected, and an author who reaches the daily share limit gets a 429, without LinkedIn publishing what that limit is.

Whether the share box refuses or trims a 3,001st character, what happens to an image over 5 MB or a video over 5 GB, and how emoji, links, mentions and hashtags count toward the 3,000 are not published on any LinkedIn page read for this table. This page will not guess.

How SpeedRun Social keeps posts inside these limits

SpeedRun Social writes every LinkedIn post to a 3,000-character ceiling, the same figure LinkedIn publishes, and adds no hashtags to a LinkedIn post, both enforced by the code that generates the caption rather than by a reviewer remembering the rule. The review preview shows the post before anything publishes.

Questions people ask about these limits

  • What is the LinkedIn post character limit?

    3,000 characters. LinkedIn's help centre states 'The character limit for a post is 3,000 characters', and says a longer piece should be written as an article. A LinkedIn Page gets the same figure; no separate Page limit is published.

  • How many hashtags should a LinkedIn post have?

    LinkedIn publishes no maximum. Its guide for Pages recommends three to five hashtags added when relevant. The only hard cap, three hashtags, applies to Trending Employee Content on a Page tab and not to feed posts. A Page post must have 40 or fewer mentions.

  • How long can a LinkedIn video be?

    3 seconds to 15 minutes by LinkedIn's video specifications page. Its article editor page splits the ceiling into 15 minutes on desktop and 10 minutes on the mobile app, and the Videos API allows 30 minutes. All three are LinkedIn's own pages and all three are shown.

  • What is the maximum file size for a LinkedIn video?

    5 GB, with a 75 KB minimum, by the help centre's video specifications page. The Videos API's specification section says 500 MB while its upload step says 5 GB. The help centre accepts MP4, MOV, WEBM and MKV; the API accepts MP4 only.

  • What size should a LinkedIn post image be?

    Under 5 MB and 36 megapixels, at least 552 by 276 pixels with 1080 wide recommended, and within a 3:1 to 4:5 aspect ratio or LinkedIn centres and crops it. GIF, JPEG, PNG and WEBP are accepted everywhere, HEIF and HEIC on iOS. A multi-photo post takes up to 20 photos.

  • How far ahead can you schedule a LinkedIn post?

    From 10 minutes to 3 months ahead as a member, and from 1 hour to 3 months ahead as a Page. Events, multi-photo posts, reshares, polls, jobs and service posts cannot be scheduled from a Page, so those go out by hand or through the API.

See also

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