AVIF to HDR Converter

Convert AVIF to HDR instantly — free web-based tool

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Format Freedom

Break free from AVIF compatibility issues — HDR is supported by a much wider range of tools, devices, and operating systems.

Browser-Based Tool

The entire AVIF to HDR conversion runs in your browser. Compatible with Chrome, Firefox, Safari, Edge — on desktop and mobile.

Bulk Conversion

Need to convert dozens of AVIF files? Upload them all and batch-convert to HDR — much faster than processing one at a time.

How to convert AVIF to HDR

1

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

2

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

3

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

About formats

AVIF (AV1 Image File Format) is a modern image format derived from the AV1 video codec, developed by the Alliance for Open Media and specified in February 2019. The format leverages the intra-frame coding tools of AV1 — a royalty-free video codec backed by Google, Apple, Microsoft, Amazon, Netflix, and other major technology companies — to compress still images with substantially higher efficiency than JPEG, PNG, or even WebP. AVIF stores images in the HEIF (High Efficiency Image File Format) container, supporting both lossy and lossless compression, HDR (high dynamic range) with wide color gamuts up to 12-bit depth, alpha transparency, and animated sequences. At equivalent visual quality, AVIF files are typically 30-50% smaller than WebP and 50-70% smaller than JPEG, representing the largest compression improvement in mainstream image formats in over a decade. One advantage is exceptional compression efficiency — AVIF delivers visually indistinguishable images at dramatically lower file sizes, directly reducing bandwidth consumption and improving page load times for web content. The royalty-free licensing model provides another key strength: unlike HEIC/HEIF which relies on patent-encumbered HEVC, AVIF's AV1 foundation is free for anyone to implement without licensing fees. Browser support has reached broad adoption, with Chrome, Firefox, Safari, and Edge all rendering AVIF natively. The format is rapidly gaining adoption for web images where quality-to-size ratio is paramount.
Initial release: February 8, 2019
HDR (also known as RGBE or Radiance HDR) is a high-dynamic-range image format created by Greg Ward Larson as part of the Radiance) lighting simulation system, developed at Lawrence Berkeley National Laboratory starting in 1985 with the HDR format emerging around 1989. The format stores floating-point RGB pixel values using a compact 32-bit-per-pixel encoding called RGBE (Red, Green, Blue, Exponent): three 8-bit mantissa bytes share a single 8-bit exponent, representing luminance values across a range of roughly 76 orders of magnitude while keeping file sizes comparable to standard 24-bit images. HDR files begin with a text header containing rendering and exposure metadata, followed by the RGBE pixel data compressed with a scanline-oriented run-length encoding scheme. The format captures the full luminance range of real-world scenes — from deep shadows to direct sunlight — enabling physically accurate lighting calculations, tone mapping to different display conditions, and post-capture exposure adjustment without the clipping artifacts inherent in 8-bit formats. One advantage is the format's foundational role in HDR imaging: Radiance HDR pioneered the concept of storing real-world luminance values in image files, and the .hdr format became the standard for light probe images and environment maps used in image-based lighting across the 3D rendering industry. The format's compact encoding is another practical strength — the RGBE scheme provides far more dynamic range than 8-bit formats while using only 33% more storage per pixel, a favorable tradeoff that made HDR practical on storage-limited systems of the late 1980s. HDR files are supported by Photoshop, GIMP, ImageMagick, Blender, and all major 3D renderers.
Developer: Greg Ward Larson
Initial release: 1989

Frequently Asked Questions

Why convert AVIF to HDR?

HDR preserves the full dynamic range of your AVIF image — critical for 3D rendering, VFX compositing, and professional lighting workflows.

What programs open HDR files?

Photoshop, Luminance HDR, Photomatix, Blender. Most modern operating systems also have built-in support or free viewer options available.

Can I use this on Mac and Linux?

The converter is entirely browser-based — it works on macOS, Linux, Windows, and any other platform with a modern web browser. No OS-specific software needed.

Is my AVIF file safe during conversion?

Uploaded AVIF files are deleted immediately after conversion. HDR output files are removed from servers within 24 hours for your privacy.

Is AVIF to HDR conversion free?

Basic conversions are free on Convertio. Premium plans offer faster processing, larger file sizes, and higher daily conversion limits for heavier workloads.

What happens to my uploaded files?

Your AVIF files are automatically deleted right after conversion. The resulting HDR files remain available for download for 24 hours, then they are permanently removed.

AVIF to HDR Quality Rating

4.5 (82 votes)
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