Social Media Image Sizes

X publishes formats and a file-size cap for still images but no recommended pixel dimensions at all.

Also capped at 350 frames, and at 300 million for width times height times frame count. Up to 15 MB.

125 minutes on a Premium or verified account.

16 GB on a Premium or verified account.

Minimum width 320 px. The ratio is a range, not a size — anything outside it is rejected by the API rather than cropped.

Every slide is cropped to the first image’s ratio, so the first image decides the whole carousel.

3 seconds to 15 minutes, 23–60 FPS. A cover image that is not 9:16 is cropped to its middle 9:16 rectangle.

3 to 60 seconds.

Below 600 x 315 px the link renders as a small thumbnail instead of a large image. 200 x 200 px is the absolute minimum.

The Graph API caps Page photo uploads at 4 MB — half the 8 MB allowed for a link preview image — and advises keeping PNGs under 1 MB.

3 to 90 seconds, 24–60 FPS, fixed frame rate and progressive scan.

Must be more than 200 px wide or LinkedIn renders it as a small thumbnail.

Anything from 400 x 400 up to 7680 x 4320 px is accepted, max 8 MB. GIFs are rejected.

JPG or PNG under 8 MB.

Minimum 268 x 268 px.

LinkedIn lists this as both the minimum and the recommended size — there is no larger option for Page covers.

Minimum 264 x 176 px.

TikTok publishes minimum and maximum bounds rather than a recommended size.

The API ceiling. An individual account may have a lower in-app limit depending on its status.

Upload something larger — the 98 px figure is the display size, not an upload limit. Max 15 MB, no animated GIFs.

Only the central 1235 x 338 px is safe for text and logos; everything outside it is cropped on smaller devices.

Must be square and under 1 MB.

Never add your own padding or black bars — that stops YouTube resizing the player to fit the video.

Up to 20 MB uploading from desktop, 32 MB from the app.

2 to 5 images, and every image in the carousel must share the same ratio.

4 seconds to 15 minutes; Pinterest recommends 6 to 15 seconds.

Up to 5 minutes.

Minimum width 320 px — narrower images are scaled up, wider ones scaled down.

Up to 5 minutes, 23–60 FPS.

The prose on this page still says 1,000,000 bytes while the code sample on the same page, and the app.bsky.embed.images lexicon it cites, both say 2,000,000.

Bluesky recommends no dimensions. Posts carry an aspectRatio hint; if you do not know the real ratio, leave it undefined rather than guessing.

MP4 only. No duration limit is documented; the video service applies its own per-account daily posting limits, and the account email must be verified first. Size limit from the app.bsky.embed.video lexicon this page defers to.

Four images per post. 8.3 MP is roughly 3840 x 2160, so anything larger is resized on upload.

One per post, up to 16 MB, and converted to a soundless MP4. Static GIFs get the same limits.

Downscaled to 400 x 400 after upload, max 2 MB.

Downscaled to 1500 x 500 after upload, max 2 MB.

One per post. Transcoded to H264 MP4 at up to 1300 kbps.

Width-to-height ratio must be at most 20. Up to 10 MB uploaded directly, but only 5 MB if Telegram fetches it from a URL.

An exact requirement, not a recommendation. Max 10 MB, and it cannot be reused from an existing file id.

The cloud Bot API limit. A self-hosted local Bot API server raises it to 2000 MB.

Must be H265 in MP4, streamable, with a key frame every second. Max 30 MB and 60 seconds.

Stay within 540 px wide or the dashboard scales the image down. The click-through version can be up to 2048 x 3072 px.

Under 3 MB it is not compressed at all; a compressed GIF must be under 5 MB, an uncompressed one under 10 MB. All GIFs are converted to GIFV.

A GIF avatar is accepted but flattened to a static JPEG, PNG or WEBP.

The default for every user. Nitro, or a server’s Boost Tier, raises it — the effective ceiling is the higher of the two.

Discord re-renders uploaded images at these sizes through a ?size= parameter on the CDN URL, and publishes no recommended upload dimensions.