Thumbnail Extractor
Extract still frames as JPEG or PNG from any timestamp. Multi-frame extraction supported.
Fully local processing — your file never leaves the browser
Drag & drop a video, or click to select
Supported: MP4, MOV, AVI, MKV, WebM, etc. / Max 500MB
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Comma-separated list of timestamps in seconds (e.g. 0, 5, 10, 30.5). Up to 10 frames.
▶ Equivalent FFmpeg Command
Processing… 0%
Extracted Frames
Popular uses
YouTube thumbnail candidatesStill images for articlesPreview frames for review
What this tool does
- One or many timestamps
- JPEG (small) or PNG (lossless)
- Output width selector
- Local processing
How to use
- 1
Pick a video
Any common format.
- 2
Choose seconds
Comma-separated for multiple frames (0.5, 3, 10).
- 3
Pick format
JPEG = light, PNG = lossless.
- 4
Extract
Thumbnail grid appears.
What each setting means
Timestamp
Where to grab the frame. 0 = first frame.
Format
JPEG smaller; PNG keeps full color.
Width
Output width in pixels. Stay ≤ source for sharp results.
Recommended settings
YouTube thumbnail
JPEG, 1280px
YouTube recommends 1280×720.
Blog OGP image
JPEG, 1200px
Standard OGP size.
Storyboard grid
JPEG, every 5s
Quick visual index.
Common pitfalls
Symptom: Black frames
Cause: Timestamp lands during a fade.
Fix: Move ±1s.
Symptom: Image looks blurry
Cause: Output width > source resolution.
Fix: Use width ≤ source.
Equivalent FFmpeg commands
Reference commands you can run on the desktop FFmpeg CLI.
JPEG @5s
ffmpeg -ss 5 -i input.mp4 -frames:v 1 -q:v 2 thumb.jpgSix frames every 5s
ffmpeg -i input.mp4 -vf "fps=1/5,scale=1280:-1" -vframes 6 thumb_%03d.jpgBrowser support & limits
- JPEG or PNG output
- Many frames at once may run out of memory
Privacy
This tool runs ffmpeg.wasm directly in your browser. Files never leave your device — everything runs locally. Read the privacy policy →
Frequently asked questions
Can I get an animated GIF?
No — this tool extracts stills. Use the GIF tool.
How many frames?
≤20 is comfortable. More may freeze the browser.
Best quality?
PNG output at the source resolution.
Related tools
Related FFmpeg recipes
What to do next
Command Reference
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