CMX to HEIC Converter

CMX to HEIC conversion — Apple image format free

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Apple Ecosystem Ready

HEIC is the native Apple photo format. CMX to HEIC conversion creates images that fit right into iPhones, iPads, and Mac libraries.

Modern Compression

HEIC provides better quality per byte than JPG. Your CMX artwork is compressed efficiently without visible quality loss.

Cloud Conversion

Convertio servers handle the CMX to HEIC conversion. No codecs, no plugins — just upload and get your HEIC file.

How to convert CMX to HEIC

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose heic or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your heic file right afterwards

About formats

CMX (Corel Presentation Exchange) is a vector graphics exchange format developed by Corel Corporation, introduced with CorelDRAW 5 in September 1994. Designed as a cross-application interchange format within the Corel product suite, CMX stores vector objects, text, bitmaps, and rendering attributes in a structure accessible to CorelDRAW, Corel PHOTO-PAINT, Corel Presentations, and other Corel applications without requiring each program to understand the full CDR native format. The format uses a chunk-based architecture that encodes geometric primitives, fill patterns, outline properties, and color definitions in a standardized way, supporting both 16-bit and 32-bit variants. CMX gained significance beyond the Corel ecosystem through its adoption by third-party applications and its role in clipart distribution — many vector art collections from the mid-to-late 1990s shipped in CMX format. One advantage is interoperability within design workflows: CMX provided a practical bridge for moving vector content between different Corel applications while preserving visual fidelity, gradients, and transparency attributes. The format's inclusion of both vector and bitmap data within a single file is another strength, allowing complex mixed-media illustrations to be exchanged as self-contained units. Microsoft also added CMX import support to some Office applications, expanding the format's reach. While modern Corel applications primarily use CDR for native work and export to SVG, PDF, or EPS for interchange, CMX files from the CorelDRAW era remain widely encountered in legacy asset libraries.
Developer: Corel Corporation
Initial release: 1994
HEIC (High Efficiency Image Container) is Apple's branded implementation of the HEIF (High Efficiency Image File Format) standard that uses HEVC (H.265) as its image compression codec. Apple adopted HEIC as the default photo format on iPhones and iPads starting with iOS 11 in September 2017, replacing JPEG for newly captured images. HEIC files store photographs compressed with the intra-frame coding mode of the HEVC video codec, which applies sophisticated prediction, transform, and entropy coding techniques that achieve roughly 50% better compression than JPEG at equivalent visual quality. The ISOBMFF (ISO Base Media File Format) container supports multiple images in a single file, enabling Live Photos (a still plus a short video clip), burst sequences, depth maps from dual-camera systems, and HDR gain maps that allow compatible displays to render extended dynamic range. HEIC also stores alpha channels, auxiliary images for computational photography features (portrait mode depth data, semantic segmentation masks), and comprehensive EXIF/XMP metadata. One advantage is storage efficiency: iPhones shooting HEIC use roughly half the storage of equivalent JPEG captures with no visible quality loss, a significant benefit on devices where storage is finite and photos accumulate rapidly. The format's integration with Apple's ecosystem is another key strength — HEIC files are natively supported across macOS, iOS, iPadOS, and iCloud Photos, and automatic JPEG transcoding during file sharing ensures compatibility when sending photos to non-Apple devices. HEIC can also be opened by Windows 10/11 (with codec), GIMP, ImageMagick, and Adobe Lightroom.
Developer: MPEG / Apple
Initial release: 2015

Frequently Asked Questions

Why convert CMX to HEIC?

HEIC is the default photo format on Apple devices. Converting CMX to HEIC creates images that integrate seamlessly into the Apple ecosystem.

What opens HEIC files?

iPhones, iPads, and Macs open HEIC natively. Windows 10+ supports it via extensions, and GIMP handles HEIC with plugins.

Is HEIC better than JPG?

HEIC offers better compression than JPG — smaller files with equal or superior quality. Apple adopted it for this efficiency advantage.

Is the conversion secure?

Uploaded CMX files are encrypted and deleted after processing. HEIC outputs are removed within 24 hours.

Is this tool free?

Basic CMX to HEIC conversion is free on Convertio. Premium options provide extended capacity for larger workflows.

Can I convert on Windows?

Yes — Convertio is browser-based. Convert CMX to HEIC from Windows, Mac, Linux, or any mobile device.