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Video Thumbnail Generator (Free, Online, No Upload)

Generate a thumbnail image from any video right in your browser. Nothing gets uploaded to a server. Grab the perfect still frame for YouTube thumbnails, social media previews, or image galleries. The extraction runs locally using FFmpeg compiled for your browser.

Try it in your browser

Loading FFmpeg engine... (~31 MB)

Use the API

curl -X POST https://renderio.dev/api/v1/run-ffmpeg-command \
  -H "X-API-KEY: ffsk_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
  "ffmpeg_command": "-i {in_video} -ss 00:00:01 -vframes 1 -q:v 2 {out_video}",
  "input_files": {
    "in_video": "https://example.com/input.mp4"
  },
  "output_files": {
    "out_video": "output.jpg"
  }
}'

Need an API key? Get your free API key to start processing files programmatically.

Common Variations

PNG lossless output
-i input.mp4 -ss 00:00:01 -vframes 1 output.png
Thumbnail at 50% of duration
-i input.mp4 -ss 00:00:30 -vframes 1 -q:v 2 output.jpg
Scaled thumbnail (320x180)
-i input.mp4 -ss 00:00:01 -vframes 1 -vf scale=320:180 -q:v 2 output.jpg
Multiple thumbnails (1 per 10s)
-i input.mp4 -vf fps=1/10 -q:v 2 thumb_%03d.jpg

Related Operations

Generate Video Thumbnail Online Free | RenderIOFree Video to PNG Sequence Converter Online | RenderIOFree Video to JPEG Sequence Converter Online | RenderIOFree MP4 to Animated WebP Converter Online | RenderIO

Need to process at scale?

Automate this with the RenderIO FFmpeg API. Process thousands of files programmatically or through no-code video automation.

Get your API key