Free HEIF to AVIF Converter

Looking for a simple and reliable way to convert HEIF files to AVIF? Try reaConverter Lite — our free image converter designed for smooth, high-quality results.

reaConverter Lite supports batch processing, so you can convert dozens or even hundreds of HEIFs to AVIF in one go. Work fully offline, fine-tune resolution and quality settings, and even use right-click conversion directly from Windows Explorer for ultimate convenience.

Fast. Free. Fully offline.

— No uploads, no limits

1. Download and Install reaConverter Lite

reaConverter Lite is quick to download, easy to install, and ready to launch in seconds. This lightweight, standalone software is highly efficient at handling a wide range of batch image conversions. Plus, it lets you apply essential image editing options — such as resizing, rotating, or adjusting quality — during the conversion process.

Install Free HEIF Converter

2. Load your HEIF files

Open reaConverter and import your .heif files. No file limits, no slowdowns. Add as many as you need.

Drag files into the window, use the Add Files button, or select entire folders.

3. Select AVIF as output format

Select AVIF as target format and pick where to save results. You can keep default settings or fine-tune the output.

4. Start HEIF to AVIF conversion

Hit Convert to process your files. The log window shows progress, timing, and status for every file.

Conversion complete? Your AVIF files are saved to the destination folder, ready to use.

How HEIF and AVIF differ in practice

HEIF and AVIF both compress by discarding data, so this is a re-encode rather than a copy. The output is built from already-compressed pixels, and the artefacts of the first encode are carried into the second. Use a high quality setting, and convert from the original whenever you still have it.

HEIF to AVIF — Free

Convert your HEIF files to AVIF in seconds using reaConverter Lite — the fast, free, and offline solution. All conversions are processed locally on your PC, ensuring maximum speed and privacy with no internet required.

Download Free Converter

Do more with your images

Converting HEIF images for use in a larger project? With reaConverter, you can convert, edit, and enhance your images in one streamlined process.

Our range of editing options includes such image processing actions as Resize, Rotate, Crop, Color Replace, Watermarks and more. Adjust actions include RGB, HLS, HSV, Brightness and Contrast. Auto-processing options are also available, such as auto-rotate and auto-crop.

Image editing tools

User Reviews

Average User Rating:4.8
Last updated on August 08, 2026

"I needed to convert HEIF files for a personal project, and reaConverter made it shockingly simple. Drag-and-drop batch conversion, preset profiles, and fast outputs."

Mark Reynolds

Satisfied Customer

"If Apple’s HEIF format drives you nuts, this is the fix. Simpler than Adobe, faster than online tools, and reliable enough for pro workflows."

Noah F.

Satisfied Customer

"An excellent program! I use it regularly in my work - it supports nearly every file format imaginable. The interface is intuitive and runs flawlessly every time."

Roger Cook

Happy User

"For agencies handling confidential data, reaConverter eliminates cloud-upload risks while delivering unmatched conversion reliability. Our team uses it both in-office and remotely with identical results."

Jamal Bailey

Satisfied Customer

"Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!"

Jason P. Bailey

Non-Profit Coordinator

"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"

Logan B.

Satisfied Customer

HEIF to AVIF Conversion: FAQ

Can reaConverter convert HEIF to AVIF?

Yes! reaConverter instantly converts .heif to .avif with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

Is reaConverter free?

Yes — reaConverter Lite is completely free to use! It offers powerful batch image conversion, right-click integration, and support for popular formats, all without requiring an internet connection. For advanced features like automation, metadata editing, and support for rare formats, you can upgrade to the Pro edition anytime.

What is reaConverter used for?

reaConverter is a software program used for converting images and other types of files from one format to another. It supports a wide range of file formats and allows users to convert multiple files at once, making it a valuable tool for graphic designers, photographers, and other professionals who work with digital images. reaConverter also includes features for resizing, cropping, and editing images, along with batch processing capabilities that help automate repetitive tasks.

Can I convert HEIF to AVIF in my browser?

Yes — with our free web-based HEIF to AVIF converter, you can convert .heif files instantly, right in your browser. No installation, no uploads — perfect for quick, local conversions.

Is reaConverter free?

How can I turn HEIF files into AVIF on my computer?

The best way to change HEIFs to AVIFs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from HEIF to AVIF.

How can I automate HEIF to AVIF files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert HEIF files to AVIF using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line heif to avif converter for batch processing.

What else can I do with reaConverter?

Set file date Convert DICOM images Picture resizer Convert CAD formats Change image bit depth

HEIF and AVIF: related conversions

Other ways to convert HEIF files, and other sources that convert to AVIF.

All HEIF conversions All AVIF conversions