Then, the source image is resized by the inputted width. As a sample, at first, the size of source image is retrieved using getSize(). Since it was found that this workaround can be surely used, I added this to ImgApp.
Recently, I accidentally discovered the other workaround doResize(). So although I had thought of other workaround, I had not been able to find it. But in this method, the resized blob cannot be retrieved. As a workaround, there is a method that it imports the image in Google Document and resizes the image using setWidth() and setHeight(). Unfortunately, there are no methods to resize images at Google Apps Script. This method ( getSize()) can retrieve the size information from BMP, GIF, PNG and JPG files. This sample image is created by k3-studio. From this demo, you can see the speed for retrieving the size information from files. the size information is retrieved from BMP, GIF, PNG and JPG files. By this, the low process cost could be achieved. So I thought of retrieving the information of image at the binary level, and created this. But in this method, it uses much time and resources on Google. As a workaround, there is a method that it imports the image in Google Document and retrieves the size using getWidth() and getHeight(). Unfortunately, there are no methods to directly retrieve the image size at Google Apps Script. This method is for retrieving the width and height of image as the unit of pixel. By the authorization for Google Services, Drive API is enabled automatically.** Users are not necessary to enable Drive API on Google API console. Recently, I confirmed that users can use Drive API by only the authorization for Google Services.
** * The method of doResize() uses Drive API. If you want to read about Libraries, please check this. -> Developer mode ON (If you don't want to use latest version, please select others.).Script ID is 1T03nYHRho6XMWYcaumClcWr6ble65mAT8OLJqRFJ5lukPVogAN2NDl-y.
I would like to add the methods for handling images in the future.
And also, the several images can be merged as an image. UpdateThumbnail() : This method is for updating thumbnail of files on Google Drive.ĮditImage() : Edit an image. About the detail information, please check the principle of this method. The target files are Images, Movies, Google Docs, Microsoft Docs, Text and so on. GetSize() : This method is for retrieving the width and height of image as the unit of pixel.ĭoResize() : This method is for resizing images. This is a library of image tools for Google Apps Script.
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