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Last updated: 2026/8/4

Content you can post

Supported Social Platforms
X (Twitter)InstagramThreadsFacebookTikTok
Supported Plans
FreePersonalProfessionalBusinessEnterprise

This section explains the types of content that can be posted for each Social profile, as well as file formats and size limitations for images and videos. Posting in formats other than these may result in errors. Even if images and videos are created in the specified formats and sizes, Social profile platforms may convert or compress the formats, which could degrade the quality.

All Social profiles​

Text​

  • Emojis can be used.

X (Twitter)​

Text​

  • Posts under 140 characters
  • Long posts over 140 characters
    • Japanese: Up to 12,500 characters
    • English: Up to 25,000 characters
    •  Only for those subscribed to X Premium (Twitter Blue)

Images​

  • Format: JPG, PNG, GIF, WebP, BMP
    • If a WebP image larger than 5MB is uploaded, it will be converted to JPEG format when compressed on SocialDog.
    • BMP images will be converted to JPEG format.
  • Size: Up to 5MB (per image)
    • If the browser supports image compression, images larger than this size will be automatically compressed to a postable size.
  • Up to 4 images

Animated GIFs​

  • Format: GIF
  • Size: Up to 15MB
  • Resolution: 1280x1080 or less
  • Frames: 350 or less
  • Pixel count (product of height, width, and frames): Up to 300 million

Videos​

  • Size: Up to 512MB

The recommended video formats announced by X (Twitter) are as follows:

Recommendations​

  • Recommended video codec: H264 High Profile
  • Recommended frame rate: 30FPS, 60FPS
  • Recommended video resolution: 1280x720 (landscape), 720x1280 (portrait), 720x720 (square)
  • Recommended minimum video bitrate: 5,000kbps
  • Recommended minimum audio bitrate: 128kbps
  • Recommended audio codec: AAC LC
  • Recommended aspect ratio: 16:9 (landscape or portrait), 1:1 (square)

Advanced Processing​

  • Frame rate: 60FPS or less
  • Size: 32x32 to 1280x1024
  • File size: 512MB or less
  • Playback duration: 0.5 seconds to 140 seconds
  • Aspect ratio: 1:3 to 3:1
  • Pixel aspect ratio is 1:1
  • Supports YUV 4:2:0 pixel format only
  • Audio
  • Do not include Open GOP
  • Always use progressive scan

Threads (Tree format)​

Polls (Surveys)​

Poll duration can also be set.

Accounts that can Reply​

The following can be set:

  • All
  • Following Accounts
  • Verified Accounts
  • Accounts you @-Post

Daily Post Limit​

  • Verified Accounts (X Premium subscriber): 2,400 Posts
  • Unverified Accounts: Regular Posts 50 / Replies 200

Unsupported Content​

  • Bold/Italic text
  • Editing after posting

Instagram​

On Instagram, the formats of images and videos that can be posted differ for Feed/Reel posts and Stories posts.

Feed / Reels​

If one video is attached, it will be posted as a Reel Post.

Text​

  • Up to 2,200 characters
    • For Reels: Up to 733 characters for Japanese

Images​

  • Format: JPEG, PNG, WebP, BMP
    • If an image in a format other than JPEG is uploaded, it will be converted to JPEG format.
  • Size: Up to 8MB
    • Images exceeding this size cannot be uploaded.
    • Images to be posted on Instagram are not compressed by SocialDog.
  • Aspect ratio: From 4:5 to 1.91:1
  • Up to 10 images

Videos​

  • Format: MP4, MOV, QuickTime
  • Size: Up to 300MB
  • Video length:
    • Feed: 3 to 90 seconds
    • Reels: 3 seconds to 15 minutes
  • Aspect ratio: 4:5 to 16:9
  • Audio: 1 or 2 channels (mono or stereo)

Stories​

Mentions​

Images​

  • Format: JPEG, PNG
    • If an image in a format other than JPEG is uploaded, it will be converted to JPEG format.
  • Size: Up to 8MB
    • Images exceeding this size cannot be uploaded.
    • Images to be posted on Instagram are not compressed by SocialDog.
  • Aspect ratio: 9:16 (recommended)
    • If Media with an aspect ratio different from the recommended 9:16 is posted, margins may be added or parts may be cropped on Instagram.

Videos​

  • Format: MP4, MOV
  • Size: Up to 100MB
  • Video length: 3 to 60 seconds
  • Aspect ratio: 9:16 (recommended)
    • If Media with an aspect ratio different from the recommended 9:16 is posted, margins may be added or parts may be cropped on Instagram.
  • Audio: AAC, up to 2 channels

Unsupported Content​

  • Stories / Reels
    • Adding music
    • Adding text
    • Adding stickers (Polls, Questions, Emojis, Links, Hashtags, Mentions, Location)
    • Simultaneous Posts to multiple Social profiles
  • Reels
    • Specifying cover (thumbnail)

Daily Post Limit​

100 Posts

Facebook​

Text​

  • Up to 60,000 characters

Images​

  • Format: JPEG, PNG, WebP, BMP, TIFF
    • WebP images will be converted to JPEG format.
    • If a BMP image larger than 4MB is uploaded, it will be converted to JPEG format when compressed on SocialDog.
  • Size: Up to 4MB (up to 1MB for PNG)
    • If the browser supports image compression, images larger than this size will be automatically compressed to a postable size. However, TIFF images cannot be compressed.
  • Up to 10 images

Videos​

  • Size: Up to 100MB
  • Format: MP4, MOV, GIF
  • Aspect ratio: From 9:16 to 16:9

Threads​

Text​

  • Up to 500 characters can be posted.

Images​

  • Format: JPEG, PNG
  • Size: Up to 8MB (per image)
  • Number of images that can be attached per Post: Up to 20 images
  • Aspect ratio: From 0.01:1 to 10:1
  • Color space: sRGB (If other color spaces are used in the image, they will be converted to sRGB)

Videos​

  • Format: MOV or MP4
  • Size: Up to 1GB
  • Length: Up to 300 seconds
  • Audio: AAC, max sample rate 48 kHz, 1 or 2 channels (mono or stereo)
  • Video codec: HEVC or H264

Daily Post Limit​

250 Posts

TikTok​

Text​

  • Up to 2,200 characters can be posted along with videos.

Videos​

  • Format: MP4 (recommended), MOV, WebM
  • Size: Up to 4GB
  • Length: 1 second to 15 minutes
  • Audio codec: AAC
  • Video codec: H.264 (recommended), H.265, VP8, VP9

Daily Post Limit​

  • 15 Posts

Unsupported Content​

  • Image Posts
  • Stories Posts