Video Screenshot Tool: Capture Video Frames
Capture a single frame or mark several moments and export them as a ZIP. Preview PNG, JPEG, or WebP images at the decoded video dimensions. Your video stays in your browser.
Drop a video here or click to upload
Browser-playable video · MP4 (H.264/AAC) recommended · up to 500 MB
No video handy? Try our original 8-second animation (60 KB). Loads only when you click.
Choose a moment below, or upload your own video to begin.
1. Choose your frame
Pause at a useful moment and add it to the list on the right.
2. Capture and download
Choose a moment on the left, select a format, then capture.
Captured image · Moving the timeline does not change this result.
Want to crop or compress it? Download the image first, then select it in the next tool.
Marked moments · Batch export
Click a timestamp to preview it on the left. Select the moments to include in a ZIP.
Use “Mark this moment” under the video to start your collection.
Up to 30 moments; 64 MB of encoded images per batch. Images are captured one at a time in this browser.
Three marked moments, three full-size screenshots
A reproducible example from the original ToolKnit balloon animation: the browser decodes an 8-second, 1280 × 720 video. Mark 1, 4 and 7 seconds, select PNG, then export the three selected moments.

01-screenshot-0-01-000.png
02-screenshot-0-04-000.png
03-screenshot-0-07-000.png| Marked time | PNG dimensions | File bytes |
|---|---|---|
| 0:01.000 | 1280 × 720 | 177,704 |
| 0:04.000 | 1280 × 720 | 181,099 |
| 0:07.000 | 1280 × 720 | 183,365 |
The ZIP contains three numbered PNG files in timestamp order. Every full-size image was reopened and its dimensions checked; the previews above are smaller WebP copies for this page. The archive is 542,574 bytes.
These are synthetic practice scenes, not customer footage. Times are requested seek positions, not a guarantee of frame-number-accurate decoding. The tool exports manually marked moments; it does not automatically extract every frame or one frame per second. Encoded sizes can vary between browser versions.
For a cover image, crop the exported screenshot, then compress the copy for upload. Keep the full-size PNG when you need the original decoded pixel dimensions.
How It Works
Three simple steps
Upload your video
Choose a browser-playable video up to 500 MB. H.264/AAC MP4 is recommended.
Choose a moment
Scrub the timeline or use short steps to refine the position. Precision depends on browser decoding and the video frame rate.
Download screenshot
Download a lossless PNG at the dimensions decoded by your browser, or choose JPEG/WebP for a smaller file.
Need help capturing a frame? Read the complete guide
Learn how to use timeline and short-step controls to capture a video screenshot in your browser.
Video Screenshot FAQ
Answers about video compatibility, image quality, marked moments and local export.
Why use ToolKnit Video Screenshot?
Local Video Processing
This tool processes video files locally in your browser and does not upload them.
Timeline and Short Steps
Use the timeline and short-step buttons to choose a moment. Precision depends on browser decoding and the video frame rate.
Lossless PNG Export
PNG exports are lossless and use the dimensions decoded by your browser from the video.
Keyboard Shortcuts
Space to play/pause, arrow keys for short steps, Ctrl+S to capture. Fast workflow without touching the mouse.
Pro Tips
- ●Short-step controls (arrow keys) help refine the position after you pause.
- ●Choose PNG for lossless quality, or JPEG/WebP for smaller file sizes.
- ●The captured image reflects the frame decoded by your browser. Source frame rate and browser decoding affect the available precision.
- ●Pair with the Image Compressor to reduce screenshot file size after capture.
Capture a useful still from your video
For example, a screenshot from a 320 × 180 video stays 320 × 180 pixels. This avoids capturing the player controls or the surrounding browser window. A larger screenshot cannot restore detail missing from the original video.
Select a local clip, pause near the moment you need, refine it with the timeline and short-step buttons, then choose PNG, JPEG, or WebP. PNG keeps the captured pixels lossless; JPEG and WebP use lossy encoding here.
Files must be playable by your browser and no larger than 500 MB. H.264/AAC MP4 is a good starting point. If you see a blank player or a decode error, try a compatible MP4 export. Capture a single still, or mark up to 30 moments and export the selected frames as a ZIP. Automatic every-frame extraction is not supported.