Use the "Local file" or "Online file" buttons to specify how to upload the image to the server. Use the "local file" if you need to convert a file from your computer, in order to specify a file on the Internet, select "Online file" and in the appeared field paste the link to the file. We do not set any limits on the size of the image file, but the larger the file, the more time it will take to convert. Just be patient and everything will turn out.
If you need to change its size, then just specify the size in the "Change the size" field the width and height of the image. If you need exact adjustment in height or width, then just specify it and set the flag "Save proportions", in this case the converter will convert the file according to your condition, the second one will be calculated automatically.
To start the conversion, click the "Convert" button to start the transformation. If the conversion is successful, the file will be available in the "Conversion Results" section. If you just need to download a file, click on the file name. If you want to get other ways to save, then click on the icon to generate a QR code to upload the result to your mobile phone or tablet, and also if you want to save the file in one of the online storage services such as Google Drive or Dropbox.
Please be patient in the conversion process.
Compare XWD with DDS
Format introduction
In the X Window System, the program xwd (X Window dump) captures the content of a screen or of a window and optionally saves it into a file.
The DirectDraw Surface container file format (uses the filename extension DDS), is a Microsoft format for storing data compressed with the proprietary S3 Texture Compression (S3TC) algorithm, which can be decompressed in hardware by GPUs.
Technical details
xwd runs in one of two ways: if a user specifies the whole screen or the name or identifier of a window as an argument, the program captures the content of the window; otherwise, it changes the shape of the cursor and waits for the user to click in a window, whose content is then captured.
The DirectDraw Surface format is useful for storing graphical textures and cubic environment maps as a data file, both compressed and uncompressed. The Microsoft Windows file extension for this data format is '.dds'.