Convert HEIC to DDS offline by JavaScript

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!

Files:

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#	File Name	File Size	Actions

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.

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.