Video thumbnail generation
Generate thumbnails by extracting keyframes from videos, supporting multiple time points, custom sizes and formats
Thumbnail generation settings
Time Point Settings
Thumbnail size
Output Settings
Upload video file
Drag and drop the video file here, or click to select a file
Supports MP4, AVI, MOV, MKV and other formats, the maximum size of a single file is 100MB
Features
Fast generation: smart keyframe extraction with parallel processing.
Privacy-first: files used only for processing and auto-cleaned after completion.
Easy to use: drag-and-drop upload with customizable time points, size and format.
Forever free: unlimited usage, no registration.
How to generate video thumbnails?
- Click the upload area or drag videos into the drop zone
- Choose single/multiple/interval time points; set size and format
- Click the center Generate button and wait for completion
- Preview and download thumbnails, or download all at once
FAQ
How should I select time points?
Use single, multiple (comma-separated), or interval mode. Large counts increase processing time; limit with the maximum number option.
How to ensure thumbnail clarity?
Use original resolution or larger preset, choose PNG for best quality or increase JPEG quality.
Which formats are supported?
Input: MP4, AVI, MOV, MKV. Output: JPEG/PNG/WebP/BMP. Single file size up to 100MB.