Image Specs
Photo (Chat / Channel)
| Max File Size | 10 MB |
|---|---|
| File Formats | JPG, PNG |
| Notes | Telegram compresses photos; send as File/Document to preserve full quality |
Profile Photo
| Dimensions | 640 × 640 px recommended |
|---|---|
| Max File Size | 10 MB |
| File Formats | JPG, PNG |
| Notes | Displayed as a circle; animated profile photos supported for Premium users |
Sticker
| Dimensions | 512 px on one side (other side 512 px or less) |
|---|---|
| Max File Size | 512 KB |
| File Formats | PNG, WEBP |
| Notes | Transparent background recommended; one side must be exactly 512 px; animated stickers use TGS (Lottie-based) format |
Channel / Group Icon
| Dimensions | 640 × 640 px recommended |
|---|---|
| Max File Size | 10 MB |
| File Formats | JPG, PNG |
| Notes | Displayed as a circle |
[Ad]
Video Specs
Video (Chat / Channel)
| Max File Size | 2 GB |
|---|---|
| File Formats | MP4, MOV, AVI, MKV |
| Resolution | Up to 3840 × 2160 px (4K) |
| Notes | H.264 + AAC recommended; Telegram Premium users can send up to 4 GB |
Video Note (Round Video)
| Dimensions | Displayed as 384 × 384 px circle |
|---|---|
| Max File Size | 20 MB |
| File Formats | MP4 |
| Max Duration | Up to 60 seconds |
| Notes | Looping circular video; must be square aspect ratio at source; Bot API allows up to 640 × 640 px source |
GIF / Animation
| Max File Size | 50 MB |
|---|---|
| File Formats | GIF, MP4 |
| Notes | Telegram stores GIFs as silent MP4 for efficiency; auto-loops |
Text & Character Limits
Message
| Character Limit | 4,096 characters |
|---|---|
| Notes | Premium users with the Rich Text Editor (July 2026) and bot rich messages can send up to 32,768 characters |
Caption
| Character Limit | 1,024 characters |
|---|---|
| Notes | Caption attached to a photo, video, or document; Telegram Premium users can add up to 2,048 characters (double the standard limit) |
Bio / About
| Character Limit | 70 characters |
|---|---|
| Notes | Telegram Premium users can add up to 140 characters (double the standard limit) |
Channel / Group Name
| Character Limit | 128 characters |
|---|
Channel / Group Description
| Character Limit | 255 characters |
|---|
Username
| Character Limit | 32 characters |
|---|---|
| Notes | 5 characters minimum; letters, numbers, underscores only |
Profile & Channel Assets
Profile Photo
| Dimensions | 640 × 640 px recommended |
|---|---|
| Max File Size | 10 MB |
| File Formats | JPG, PNG |
| Notes | Displayed as a circle |
Channel Cover Photo
| Dimensions | 640 × 640 px |
|---|---|
| Max File Size | 10 MB |
| File Formats | JPG, PNG |
Telegram Ads
Sponsored Message
| Character Limit | 160 characters |
|---|---|
| Notes | Text-only ads displayed in public channels with 1,000+ subscribers; managed via Telegram Ad Platform |
Sponsored Message URL Button
| Character Limit | 50 characters |
|---|---|
| Notes | Optional CTA button label on sponsored messages |