Skip to content New Let Claude, ChatGPT or any MCP client post for you.

Video thumbnail grabber

Pick any frame of a video and save it as an image. Step frame by frame, let it find the sharpest frames, and crop them for YouTube, Reels or TikTok.

  • Free
  • No sign-up
  • Runs in your browser

Your video

Shape
Format

Runs in your browser. Your video is never uploaded.

Your thumbnail

The frames you grab show here, with their time, size and how each network shows them.
How it works

Each network shows a cover its own way

The frame is drawn from your video at its own resolution, cropped to the shape you pick and never enlarged. Find the best frames skips black and blank moments and keeps the sharpest ones.

TikTok

TikTok cover

TikTok takes a cover as a time in the video, so the cover is always one of its frames. Find the moment here, then pick the same time in TikTok, or set it in Foliwo, which sends it with the video.

YouTube

YouTube thumbnail

A custom thumbnail is an image you upload in YouTube Studio, at 16:9. YouTube wants it at least 640 pixels wide and, from a phone, under 2 MB. A frame from your own video is the quickest one that matches what people get when they click. Custom thumbnails need a verified channel.

Instagram

Instagram Reel cover

A Reel’s cover is one of its frames unless you upload an image. Reels play at 9:16, and your profile grid shows only the middle 3:4 of the cover, so keep faces and text in the centre. Foliwo sets the cover by its time when it publishes.

Pinterest

Pinterest video Pin cover

A video Pin shows its cover in the feed until it starts playing, at 9:16. Foliwo sets the frame you pick as the cover when it publishes the Pin.

Reference

Video cover and thumbnail sizes

The shape each network shows a video’s cover at, as Foliwo publishes it.

Network The cover is Shape File limit
TikTok TikTokA frame of the video, picked by its timeVideo 9:16Nothing to upload
YouTube YouTubeAn image you upload (video thumbnail)Video thumbnail 16:9, Short 9:162 MB, at least 640 px wide
Instagram InstagramA frame of the feed post or reel, picked by its timeReel 9:16, Profile grid 3:4Nothing to upload
Pinterest PinterestA frame of the video pin, picked by its timeVideo Pin 9:16Nothing to upload
FAQ

Questions about video thumbnails

Thumbnail grabbers for each network

Made by Foliwo, the social media scheduler that publishes your videos with the cover you pick.

Get started

Stop posting by hand.Start shipping content.

Connect your channels in minutes. Write in Foliwo or ask your AI agent, and let the queue publish.

$1 for your first month · Cancel any time

  • Claude
  • ChatGPT
  • Codex
  • Windsurf
  • Gemini CLI
  • VS Code