Grid of dots

Free Online
HEIF to SIXEL
File Converter

Securely convert your HEIF files to SIXEL using our entirely local, in browser file converter. No download required, no data leaves your computer.

Drag and drop your file here

or click to select file

From

To

HEIF

High Efficiency Image Format

HEIF (High Efficiency Image Format) is a versatile image file format designed for improved compression, resulting in high-quality images with smaller file sizes compared to traditional formats like JPEG. Developed by the Moving Picture Experts Group (MPEG), HEIF supports a wide range of features including transparency, 16-bit color depth, and the ability to store multiple images in one file, making it suitable for live photos and burst photography. However, its adoption has been gradual, and not all software and devices support HEIF files natively, which can necessitate conversion for broader compatibility.

SIXEL

DEC SIXEL Graphics Format

SIXEL is a bitmap graphics format that uses six pixels per character cell to represent images, primarily developed for DEC (Digital Equipment Corporation) terminals in the 1980s. It allows for the display of images directly in terminal emulators that support the SIXEL standard, making it possible to visualize graphics in command-line environments without relying on external graphics programs.

Related

Features

The Easiest Way to Convert Your Files

Instantly convert and share, no download required

100% Free

No payment, credit card, or login required. Just click convert and share.

Privacy, Guaranteed

We do all processing locally in your browser using WebAssembly. Your files never leave your computer.

No Download Required

Convert your files entirely in your browser. No installation required.

Highest Possible Quality

We use the best possible codecs and settings to ensure no detail is lost.

Unlimited File Size

We don't limit your file size to 100mb like other services. Convert as much as you need.

One Click Convert

You can have your files ready to share with a single click.

Frequently Asked Questions

Convert in One Click

100% Free, 100% Private

No Download Required

All Processing Done Locally