Convert G3 to AVIF

Convert G3 to AVIF without uploading files anywhere. reaConverter works entirely on your PC — fast, private, and handles thousands of files at once.

reaConverter transforms G3 files to AVIF quickly and reliably. Drag in folders, set your options, click Convert, done. No cloud accounts, no file uploads, no complicated setup. Just install and start converting.

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G3 to AVIF
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How to Convert Multiple G3 Files to AVIF?

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately.

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Install reaConverter

2. Load your G3 files

Load your G3 files into reaConverter. You can add individual files or point to folders, and the software will queue everything automatically.

Select G3s from a folder or drag-and-drop them directly into the reaConverter window.

Load your G3 files into reaConverter

3. Select AVIF as output format

Choose AVIF for output and set your save location. reaConverter lets you customize quality and apply edits before conversion.

Select AVIF as output format

4. Start G3 to AVIF conversion

Press the Convert button and reaConverter takes care of the rest. Processing time depends on file size and volume.

Start Conversion

After processing, find all your new .avif files in the output location. The log shows details for each conversion.

G3 to AVIF Converter

reaConverter offers the fastest, simplest solution for converting your G3 files into AVIF in seconds - all files processed on your PC for maximum privacy and speed.

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Do more with your files

Converting G3 files for use in a workflow? reaConverter offers many ways to process files, so you can customize them according to your requirements.

Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.

Conversion features
Image editing

User Reviews

Average User Rating:
Last updated on January 15, 2026
"Google Photos auto-saved my pics as AVIF files that won’t open anywhere. reaConverter rescued 3 years of memories AND kept the quality. Take that, ‘innovation’!"
Derek Snyder
Derek Snyder
Satisfied Customer
"Twitch thumbnails keep saving as AVIF and my editing software freaks out. reaConverter swaps them to JPEG instantly. Now I can actually post my ‘🔥HOT TAKES🔥’ without crying over file errors."
Amy Li
Amy Li
Content Creator
"5/5⭐ Finally! Does what it promises - converts AND tweaks images without complicated menus. Perfect for quick jobs."
J. Mitchell
J. Mitchell
Satisfied Customer
"reaConverter is pure gold! Rock-solid performance with zero crashes. No internet needed—perfect for travel or low-connectivity work. The ultimate offline alternative to sketchy web converters. Plus, the desktop version keeps sensitive files secure since nothing ever gets uploaded to the cloud."
Malik T. Martin
Malik T. Martin
Satisfied Customer
"I was skeptical at first, but reaConverter exceeded my expectations. The interface is intuitive, and the advanced settings let me tweak outputs perfectly. Plus, the customer support is fantastic!"
Sarah Lane
Sarah Lane
Satisfied Customer
"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"
Logan B.
Logan B.
Satisfied Customer

G3 to AVIF Conversion: FAQ

What are G3 files?

A G3 file most likely contains the digital image of a document that was either sent or received by fax. Such files use a type of compression called "Group 3", meant to efficiently minimise file size by compressing the white space which generally predominates in faxed documents. G3 files were mostly used during the fax machine era and are currently considered rare and obsolete.

What are AVIF files?

AVIF is a new image format launched at the end of 2020. AV1 Image File Format was developed by the Alliance for Open Media in collaboration with Netflix, Google and Cisco. This format was created to be an open-sourced and royalty-free image format with a super-compression efficiency. Multiple graphics compression tests show that the .avif format outperforms the JPEG, PNG and WebP image formats for its image quality to compressed file size ratio.

Can reaConverter convert G3 to AVIF?

Yes! reaConverter instantly converts .g3 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.

Can I convert G3 to AVIF online?

If you only need to convert a few G3 files to AVIF format, feel free to try our free online free online G3 to AVIF converter — perfect for small batches with no installation needed!

How can I turn G3 files into AVIF on my computer?

The best way to change G3s 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 G3 to AVIF.

How can I automate G3 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 G3 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 g3 to avif converter for batch processing.

What else can I do with reaConverter?

Copy IPTC dataConvert DICOM filesImage resizerConvert RAW filesConvert Gerber files

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