Knowing the accepted formats, size limits, and recommended dimensions for all content used on the platform ensures optimal publications.
Text
Maximum number of characters for posts and comments: 15,000, including spaces.
Images and videos
Images
- Accepted formats: image/gif, image/jpg, image/jpeg, image/png, image/webp
- Maximum size per image: 10 MB
- Maximum number of images per metapost: 5 files in total, images and videos combined
Videos
- Accepted formats: video/avi, video/mpeg, video/mp4, video/quicktime, video/x-flv, video/MP2T, video/3gpp, video/x-msvideo, video/x-ms-wmv, video/ogg, video/webm, video/3gpp2
- Maximum size per video: 512 MB
- Maximum number of videos per metapost: 1
PDF files
- Accepted format: application/pdf
- Maximum size: 10 MB
Banners
Homecards banners
- All devices: 213 × 66 px / Full-size version: 214 × 150 px
- Accepted formats: SVG, PNG, JPG
- Larger visuals are possible and adapted via CSS customization
Home banner
- Desktop: 640 × 200 px
- Mobile: 360 × 140 px (we use a standard width for mobile devices, however screens may vary from 340 to 420 px). We recommend avoiding placing elements too close to the edges.
- Accepted formats: SVG, PNG, JPG
- These specifications are the same as for sub-communities banners.
Channels banner
- Desktop: 640 × 200 px
- Mobile: 360 × 140 px (we use a standard width for mobile devices, however screens may vary from 340 to 420 px). We recommend avoiding placing elements too close to the edges.
- Accepted formats: SVG, PNG, JPG
Pictograms and icons
Menu channel icons
- Size: 16 × 16 px
- Format: SVG
Mission icons
- Size: 40 × 40 px
- Format: SVG
Badge icons
- Size: 40 × 40 px
- Format: SVG
- Types: grey (locked) and colored (unlocked)
Reaction bar
- Size: 18 × 18 px
- Format: SVG
- Types: grey and colored
- Icons: Like, Comment, Share
Desktop right top menu
- Size: 24 × 24 px
- Format: SVG
- Types: grey and colored
- Icons: Notification bell, Inbox, Arrow down, Logout, Help
Mobile navigation bar
- Size: 20 × 20 px
- Format: SVG
- Types: grey and colored
- Icons: Burger menu, Home, Profile, Inbox, Notification bell

Status icons
- Size: 18 × 18 px
- Format: SVG
- Recommendation: prefer colored text tags

Profile statuses background images
- Size: 60 × 60 px
- Formats: SVG, JPG, PNG
Register pop-up sub-communities images
- Size: 116 × 127 px
- Formats: JPG, PNG
Cover images
Event post cover image
- Size: 640 × 200 px
- Recommendation: without text
- These specifications are the same as for the blog post cover image.
Contest post cover image
- Size: 640 × 200 px
- Recommendation: without text
Product testing campaign image
- Size: 640 × 200 px
- Recommendation: without text
WYSYWYG poster
For images in posts, use the WYSIWYG editor to insert images rather than attachments. With any image with a minimum width of 640 px, the image will take up the full width (height may vary). On mobile, the image will be resized proportionally.