Convert image files online

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Conversion Results:
# Output File Source File Action

Steps:

1. Click "Choose Files" button to select multiple files on your computer. You can also click the dropdown button to choose online file from URL, Google Drive or Dropbox. Image file size can be up to 200M.

2. Choose target image size and image format. You can use the original image size or select "Change image size to" option and enter your image size. The format is [width]x[height], for example: 1920x1080. The target image format can be JPG, PNG, TIFF, GIF, BMP, PS, PSD, WEBP, TGA, DDS, EXR, J2K, PNM, SVG or XWD etc.

3. Click "Convert Now!" button to start conversion. It will automatically retry another server if one failed, please be patient while converting. The output files will be listed in the "Conversion Results" section. Click icon to show file QR code or save file to online storage services such as Google Drive or Dropbox.

Compare HEIF with DDS:
Name HEIF DDS
Full name High Efficiency Image File Format Microsoft Direct Draw Surface
File extension .heif .dds
MIME image/heif image/vnd.ms-dds
Developed by Moving Picture Experts Group (MPEG) Microsoft
Type of format Image Container Format texture files
Introduction High Efficiency Image File Format (HEIF) is a file format for individual images and image sequences. It was developed by the Moving Picture Experts Group (MPEG) and is defined by MPEG-H Part 12. In June 2017, Apple announced support for HEIF in macOS High Sierra and iOS 11. 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 The HEIF specification also defines the means of storing High Efficiency Video Codec (HEVC)-encoded intra images and HEVC-encoded image sequences in which inter prediction is applied in a constrained manner. 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'.
Associated programs iOS Adobe Photoshop
Sample file sample.heif sample.dds
Wiki HEIF on Wikipedia DDS on Wikipedia