Convert HEIC to DDS offline
Convert local HEIC files to DDS files offline by JavaScript in your web browser without any software downloads or file uploads!
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How to convert HEIC to DDS offline
Choose local HEIC image files, choose "DDS" as target image format, then click the "CONVERT OFFLINE" button to start offline conversions in bulk. File size can be up to 2GB.
This offline converter will try to use canvas in web browser to convert images first. The image format depends on whether your current web browser supports. For example: the latest Chrome browser supports AVIF images while some old versions don't. Then the offline converter will try to use JavaScript to convert images if your current web browser doesn't support the image format. Use online converter instead if this offline converter doesn't work in your web browser.
| Name | HEIC | DDS |
| Full name | High Efficiency Image File Format | Microsoft Direct Draw Surface |
| File extension | .heic | .dds |
| MIME | image/heic | image/vnd.ms-dds |
| Developed by | Moving Picture Experts Group (MPEG) | Microsoft |
| Type of format | Image Container Format | Texture files |
| Introduction | As HEIC is a container format, it can contain still images and image sequences (where a file contains more than one single image) that are coded in different formats. Currently, these include HEVC and H.264/MPEG-4 AVC (and JPEG for thumbnail/secondary images), though other coding formats may be added in the future. The main filename extension is .heic (for HEVC codec). | 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. |