Convert HEIC to PNG offline by JavaScript

Convert HEIC to PNG offline

Convert local HEIC files to PNG files offline by JavaScript in your web browser without any software downloads or file uploads!

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#	File Name	File Size	Actions

How to convert HEIC to PNG offline

Choose local HEIC image files, choose "PNG" 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	PNG
Full name	High Efficiency Image File Format	Portable Network Graphics
File extension	.heic	.png
MIME	image/heic	image/png
Developed by	Moving Picture Experts Group (MPEG)	PNG Development Group
Type of format	Image Container Format	Lossless bitmap image format
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).	Portable Network Graphics (PNG) is a raster graphics file format that supports lossless data compression. PNG was created as an improved, non-patented replacement for Graphics Interchange Format (GIF), and is the most used lossless image compression format on the Internet. PNG itself does not support animation at all. MNG is an extension to PNG that does; it was designed by members of the PNG Group.