Free tool
All-in-one social media image & video size checker
Preview your image or video and check it against every major social platform's format, file size, dimensions, aspect ratio, and video length limits.
Platforms this checker supports
Use the same free checker for all of these social media platforms:
- TikTok
- X (Twitter)
- YouTube
- Threads
Why the right size matters
A wrong file size, format, or aspect ratio is one of the most common reasons a scheduled post silently fails or gets awkwardly cropped. A video that is fine for YouTube can be too long for a Reel, and an image that looks great on a feed can be the wrong ratio for a Story. Checking before you post beats finding out after it has already gone out mangled.
What this tool checks
It reads your file right in the browser, then checks every platform at once for the things they actually reject: file format, file size, dimensions, aspect ratio, and, for video, length. Nothing is uploaded, so it works instantly and privately.
Frequently asked questions
- What size should my images and videos be for each platform?
- Each platform accepts different formats, file sizes, dimensions, aspect ratios, and video lengths. Drop your file in once to check it against every supported platform instantly.
- Is my file uploaded anywhere when I check it?
- No. The check runs entirely in your browser. Your image or video never leaves your device and nothing is sent to a server.
- What aspect ratio should a Reel, Short, or TikTok be?
- Vertical formats like Reels, Shorts, and TikTok videos use a 9:16 aspect ratio. This checker reads your file's real dimensions and tells you whether the ratio matches what the platform expects.