AK
appkiro.comUpload a local file or use a direct video URL that allows browser reads.
Drag and drop your video file here
or click to browse
Use an interval for regular contact sheets or a count for evenly spaced previews.
Ignored when thumbnail count is set.
Leave empty to extract all interval-based thumbnails.
Use seconds, mm:ss, or hh:mm:ss.
Leave empty to use the full video.
Higher quality creates larger files.
Select a video source, then generate thumbnails.
Generated thumbnails will appear here with download controls.
No thumbnails generated yet
Video Thumbnail Generator helps you turn selected moments from a video into downloadable still images. It is built for everyday production work: checking a cut, preparing preview images, documenting a scene, or creating a small set of frames for a CMS, brief, ticket, or social post.
The tool reads a video, samples frames from the time range you choose, and exports those frames as JPG, PNG, or WebP images. The original video remains unchanged.
Editors, marketers, writers, developers, support teams, and QA reviewers can use it when they need quick visual evidence or reusable preview frames without opening a full video editor.
Use it before publishing, while preparing content cards, when comparing scenes, or when you need timestamped frame references for feedback and documentation.
Local files are processed in your browser. URL mode also runs in the browser, but the remote server must allow CORS and Range requests so the media can be read safely.
Interval, count, start time, end time, size, quality, and format directly affect how many images you get, how useful each frame is, and how large the final downloads become.
Start with a small range, confirm the frames look right, then generate the full set. For long videos, set a thumbnail count or increase the interval to keep the browser responsive.
JPG is the default because it is compact and widely supported. PNG keeps sharper UI captures and can preserve transparency. WebP is usually smaller than JPG at similar quality, but it may not be accepted by every older workflow. Higher quality settings create larger downloads.
Each thumbnail can be downloaded individually from its preview. Download All packages the generated images into one ZIP file with timestamped filenames, making it easier to hand off a complete thumbnail set to editors, developers, or clients.
No. Files selected from your device are decoded in your browser. The tool creates image blobs locally and only uses your network when you choose a remote URL.
A playable URL is not always readable by web tools. The server must allow CORS and byte-range requests so the browser can inspect only the parts of the video needed for thumbnail extraction.
Use interval when you want a regular frame every few seconds. Use count when you need a fixed number of evenly spaced images, such as a small set for a review, gallery, or content brief.
JPG is a practical default for small files and broad compatibility. PNG is better for UI captures, sharp graphics, or transparency. WebP is useful when you want smaller modern web images.
Video files are decoded from available frames. The tool asks for the frame at your timestamp, but the browser may return the nearest usable frame at or before that point.
Browser decoding depends on the codec available in your current browser. Try a Chromium-based browser, export the video as a common H.264 MP4, or upload a different version of the file.
Yes, but choose a larger interval or set a reasonable thumbnail count. The tool limits each run to 200 thumbnails to keep memory, browser performance, and download size manageable.
No. It reads frames and exports still images only. The source video is not edited, compressed, renamed, watermarked, or saved anywhere by the tool.