Remove EXIF Metadata from Photos Strip all EXIF metadata from JPEG images to protect privacy before sharing.

The tool uses React to manage its state and handle user interactions, with the `useState` hook storing information about the image being processed, such as its source URL and original size. When a file is dropped into the `FileDropzone` component, the `handleFile` function creates an object URL for the file using `URL.createObjectURL`, which allows it to be loaded into an HTML5 Canvas element without having to upload the file to a server. The canvas element is referenced using the `useRef` hook, allowing its properties and methods to be accessed directly.

When the "Remove Metadata" button is clicked, the `removeExif` function draws the image onto the canvas using the `drawImage` method of the 2D drawing context, which is obtained using the `getContext` method. The resulting pixel data is then converted into a PNG blob using the `toBlob` method, with the `'image/png'` MIME type specified to ensure that no EXIF metadata is included in the output file. This approach takes advantage of the fact that PNG files do not support EXIF metadata, effectively stripping all metadata from the original image.

The quality of the output image can be adjusted using a slider input, which updates the `quality` state variable and passes it to the `toBlob` method when the "Remove Metadata" button is clicked. However, in this implementation, the quality setting does not affect the output because PNG files are used instead of JPEG. The original and cleaned file sizes are compared by storing their respective byte lengths in the `origSize` and `cleanSize` state variables, which are then formatted into human-readable strings using the `formatSize` function before being displayed to the user.

The download process uses a dynamically created anchor element with its `download` attribute set to `'clean-image.png'`, allowing the cleaned image to be saved locally without having to be sent back to a server for processing. The `URL.revokeObjectURL` method is used to release any object URLs that are no longer needed, preventing memory leaks and ensuring that system resources are freed up in a timely manner.

This approach ensures that all EXIF metadata, including GPS coordinates, camera information, timestamps, and personal data, is removed from the image while preserving its visual content. By using React and HTML5 Canvas to process images entirely within the browser, it provides a secure and private way to remove sensitive information from photos before sharing them online.