DFONT to AVIF Converter

Create next-gen AVIF images from Mac DFONT fonts online

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Cutting-Edge Compression

AVIF uses AV1 video codec technology for images — your DFONT font specimens achieve remarkably small sizes with exceptional visual clarity.

Modern Browser Support

Chrome, Firefox, Safari, and Edge all render AVIF natively. Your font specimen images load lightning-fast on modern web pages.

Secure Conversion

Uploaded DFONT files are deleted immediately after processing. AVIF output is automatically purged from servers within 24 hours.

How to convert DFONT to AVIF

1

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

2

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

3

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

About formats

DFONT (Data Fork TrueType) is a font file format introduced by Apple with Mac OS X 10.0 in March 2001, created to solve a fundamental compatibility problem in the transition from classic Mac OS to the Unix-based OS X architecture. Classic Mac fonts stored glyph data in the resource fork — a secondary file stream specific to the HFS file system — but OS X's Unix foundation and its use of UFS had no native resource fork support. DFONT relocates the entire resource fork structure into the data fork, wrapping the same TrueType font tables in a resource map that standard OS X typography APIs can read. The file is essentially a resource-fork-less TrueType suitcase. Apple bundled DFONT as the default format for system fonts shipped with OS X, and it remains present in macOS system directories. One advantage is seamless backward compatibility with Apple's existing font rendering stack — the internal structure mirrors classic resource-fork fonts, so CoreText and its predecessors handle DFONTs without any special conversion path. The single-fork design is another practical strength, ensuring that DFONT files survive intact when stored on non-HFS volumes, transferred over networks, or managed by version control systems. While Apple has increasingly moved toward OpenType (.otf/.ttc) for newer system fonts, DFONT files continue to appear in macOS installations and in font collections originating from the OS X era.
Developer: Apple Computer
Initial release: 2001
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

Frequently Asked Questions

Why convert DFONT to AVIF?

AVIF delivers the best compression ratio of any modern image format — your DFONT font specimens are tiny in file size yet stunningly sharp on web pages.

How do I open an AVIF file?

Chrome, Firefox, Safari 16+, Edge, and Android browsers render AVIF natively. GIMP, Photoshop (with plugin), and Windows 11 Photos also support the format.

Is AVIF better than WEBP?

AVIF generally achieves smaller files than WEBP at equal quality, especially for images with fine detail like text and glyph renders. Browser support is slightly less broad.

Does AVIF support transparency?

Yes. AVIF supports full alpha transparency with excellent compression — glyph renders with transparent backgrounds are compact and visually flawless.

Is the conversion free?

Convertio offers free DFONT to AVIF conversion — no account required, no software to install, no limits on the conversion tool itself.