HEIF to RGBO Converter

Online HEIF to RGBO — convert images quickly for free

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Quick Conversion

Speed is central to the experience — upload your HEIF and the RGBO is ready for download almost immediately after processing.

Detail Retained

The converter retains maximum visual fidelity during HEIF to RGBO conversion — your photos maintain their sharpness, color accuracy, and detail.

Cross-Platform

No app downloads needed. The browser-based tool converts HEIF to RGBO on Windows, Mac, Linux, iOS, and Android devices seamlessly.

How to convert HEIF to RGBO

1

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

2

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

3

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

About formats

HEIF (High Efficiency Image File Format) is a container format for images and image sequences standardized by the Moving Picture Experts Group as ISO/IEC 23008-12, first published in 2015. HEIF is built on the ISO Base Media File Format (ISOBMFF, the same container used for MP4 video), providing a flexible structure that can hold single images, image collections, image sequences (like animations or bursts), and derived images with non-destructive editing operations. The container is codec-agnostic — while the most common implementation pairs HEIF with HEVC/H.265 compression (branded as HEIC by Apple), the standard also accommodates AV1 compression (creating the AVIF variant), H.266/VVC, and other future codecs. HEIF supports features that JPEG lacks: 10-bit and 12-bit color depth, wide color gamuts (Display P3, BT.2020), lossless compression, alpha transparency, depth maps, thumbnail images, and Exif/XMP metadata — all within a single file. Auxiliary image items can store computational photography data like depth maps, HDR gain maps, and semantic segmentation masks. One advantage is the format's future-proof architecture: by separating the container from the codec, HEIF can adopt newer, more efficient compression technologies without changing the file structure, metadata handling, or application-level APIs. The substantial compression improvement over JPEG is another core strength — HEVC-based HEIF typically achieves 40-50% file size reduction compared to JPEG at the same visual quality, beneficial for storage and bandwidth. HEIF is supported by Apple's ecosystem (iOS, macOS), Windows 10/11, Android 10+, GIMP, ImageMagick, and Adobe products.
Initial release: 2015
RGBO is a raw pixel data format designation used by ImageMagick, the open-source image processing suite first released in 1990, representing images as a flat sequence of Red, Green, Blue, and Opacity (inverted alpha) sample values with no header, container, or compression. The RGBO channel ordering specifies that the fourth channel is opacity rather than alpha — where alpha represents transparency (0 = transparent, max = opaque), opacity represents the inverse (0 = opaque, max = transparent). This distinction matters in compositing pipelines where the mathematical convention for the fourth channel varies between systems: some compositing models work with alpha (transparency), while older conventions including portions of ImageMagick's internal processing historically used opacity. RGBO files contain raw sample data at a user-specified bit depth (8-bit, 16-bit, or floating-point per channel), with pixels stored in scanline order. Because there is no header, the image dimensions, bit depth, and endianness must be specified externally when reading the file — typically via ImageMagick command-line arguments. One advantage is direct compatibility with processing pipelines that use the opacity convention: RGBO eliminates the need for channel inversion when interfacing with systems that expect opacity rather than alpha, preventing subtle compositing errors that occur when transparency conventions are mixed. The format's raw-data nature provides another practical benefit — with no encoding overhead, RGBO data can be memory-mapped, processed with SIMD instructions, or piped between processes with minimal latency. RGBO is primarily used within ImageMagick processing chains and can be converted to any other format using ImageMagick's extensive format support.
Initial release: 1990

Frequently Asked Questions

Why would I convert HEIF to RGBO?

Despite HEIF's quality advantages, compatibility gaps persist on Windows and web — converting to RGBO eliminates viewer and upload restrictions.

What software can open RGBO?

Open RGBO files using SGI workstation tools, IrfanView, XnView, and GIMP.

Can I convert multiple HEIF files to RGBO at once?

Yes — upload several HEIF images at the same time and they will all be converted to RGBO in a single batch for convenient download.

Do I need to install software?

No — everything happens in your web browser. There is nothing to download or install for HEIF to RGBO conversion on Convertio.

How long are converted files stored?

Convertio keeps converted files for up to 24 hours. You can download your RGBO anytime within that window — files are purged after.