Platform sizes
The right size for every platform
19 pages of sizes: the dimensions, formats and file limits each platform, passport office and exam form sets, with where the numbers come from and a button that makes your file fit. For file-size limits side by side, see every upload limit.
Apps and platforms
- YouTube thumbnail size Make YouTube thumbnails 1280 × 720 pixels or larger, in 16:9, as a JPG or PNG.
- YouTube Shorts size and length A YouTube Short is a square or vertical video up to 3 minutes long.
- Instagram post, Story and Reel sizes Post photos at 1080 × 1350 (4:5 portrait) for the most space in the feed, 1080 × 1080 for square, and 1080 × 1920 (9:16) for Stories and Reels.
- TikTok video size and limits Upload TikTok videos at 1080 × 1920 pixels (9:16).
- X (Twitter) image and video sizes On X, images can be up to 5 MB, GIFs up to 15 MB, and videos up to 512 MB and 2 minutes 20 seconds on a free account.
- LinkedIn image and video sizes LinkedIn post images work best at 1200 × 627 (landscape) or 1200 × 1200 (square), up to 5 MB.
- WhatsApp file size limits WhatsApp sends photos, videos and voice notes up to 16 MB as media, and any file up to 2 GB as a document.
- WhatsApp sticker size and format WhatsApp stickers must be exactly 512 × 512 pixels, in WebP format, with a transparent background: up to 100 KB each for static stickers and 500 KB for animated ones.
- Telegram sticker size and format Telegram stickers need one side exactly 512 pixels and the other 512 or less.
- Discord file, emoji and sticker sizes Free Discord accounts can upload files up to 20 MB (raised from 10 MB in August 2026), Nitro Basic 50 MB and Nitro 500 MB.
- Link preview (Open Graph) image size Make link-preview images 1200 × 630 pixels (1.91:1).
- Favicon sizes A website needs a favicon.ico (16 and 32 px inside) or an SVG favicon, a 180 × 180 Apple touch icon for iPhones, and 192 × 192 and 512 × 512 PNGs for the web app manifest.
- Email attachment size limits Gmail, Yahoo Mail and Proton Mail allow 25 MB of attachments per email; Outlook.com and iCloud Mail allow 20 MB.
Passport, visa and exam photos
- US visa photo size For the DS-160 the photo must be a square JPEG between 600 × 600 and 1200 × 1200 pixels, 240 KB or smaller, in color.
- UK passport photo size For an online application the photo must be at least 600 pixels wide and 750 tall, between 50 KB and 10 MB.
- Indian passport photo size Passport Seva asks for a color photo of 630 × 810 pixels — the 35 × 45 mm ICAO shape — on a white background, with the face filling 80–85% of the photo and glasses taken off..
- Schengen visa photo size A Schengen visa photo is 35 × 45 mm, with the face 32–36 mm from chin to forehead (70–80% of the picture), ICAO-compliant and no more than 6 months old.
- SSC photo and signature size In the 2026 SSC notices you don’t upload a photo: the application takes it live with your camera.
- UPSC photo and signature size UPSC asks for a photo JPEG of 20–200 KB, with your face covering three quarters of it on a white background, and a signature written three times one below the other, as a JPEG of 20–100 KB and 350–500 pixels.