How to use this image tool
- Choose an image.
- Adjust the available options.
- Select Create Safe Area Preview, review the result, and download the new file.
Preview a YouTube thumbnail with configurable edge and timestamp exclusion guides, then download an annotated PNG for review.
The tool overlays safe-area guides on your thumbnail so important text and faces can be checked against edge cropping and the lower-right timestamp region.
YouTube interfaces change across devices. These guides are planning aids, not a guarantee of identical cropping in every placement.
The input picker lists formats relevant to this tool. Actual decoding still depends on your browser and the specific file variant.
| Input | Output |
|---|---|
| image/png · image/jpeg · image/webp | New image or report file |
No. Processing runs locally in the browser; selecting a file does not send it to Callimage.
Newly rendered images normally omit EXIF and other source metadata. Analysis reports include only the fields shown in the result.
Yes, in a modern browser, although large images can exceed mobile memory limits.
The file may be damaged, mislabeled, use an unsupported codec variant, or exceed the browser’s decoding limits.
No. The browser creates a separate download and does not modify the source file on your device.
| Privacy | Local browser processing |
|---|---|
| Large-image limit | 40 megapixels |