B&W → AVIF · Windows

Convert B&W to AVIF

B&W to AVIF converter that respects your privacy. No cloud uploads, no file size limits, just fast offline batch processing.

Got a folder full of B&W files? reaConverter batch converts them to AVIF in minutes, not hours. Local processing means instant results, even with thousands of files.

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B&W to AVIF
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Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .b&w Files to .avif?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting B&W files in under two minutes.

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Install reaConverter

2. Load your B&W files

Add your B&W files to reaConverter. Whether it's a handful or an entire archive, the batch engine processes them efficiently.

Browse for files, drag them in, or add entire folders at once. reaConverter queues everything automatically.

Load your B&W files into reaConverter

3. Select AVIF as output format

Pick AVIF as the output format. Set the destination folder and optionally configure resolution, quality, or file naming.

Select AVIF as output format

4. Start B&W to AVIF conversion

Start the conversion with one click. reaConverter handles everything and notifies you when it's done.

Start Conversion

When the batch finishes, your AVIF files are ready in the destination folder you chose earlier.

Step by step

How It Works

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

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Deep Customization

Do more with your files

Converting B&W 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

What people say after the first batch

Average User Rating:4.8
Last updated on September 12, 2026
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
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
Finally an app that actually opens my weird files! Saves me from format frustration daily.
Kyle Brooks
Kyle Brooks
Happy User
This converter delivers exceptionally quick format conversions with reliable results every time.
Brian White
Brian White
Happy User
Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch.
Marcus White
Marcus White
Healthcare IT
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
Roger Cook
Happy User

FAQ

B&W to AVIF Conversion

What are B&W files?

B&W is a black-and-white image file created with Image Lab, an image analysis software program used in several scientific domains. Image Lab allows the creation, processing and editing of colour and grayscale images, and includes a wide variety of functions. B&W is considered a rare format and can be converted to more accessible extensions for easier storing and transferring.

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 B&W to AVIF?

Yes! reaConverter instantly converts .b&w 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 B&W to AVIF online?

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

How can I turn B&W files into AVIF on my computer?

The best way to change B&Ws 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 B&W to AVIF.

How can I automate B&W 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 B&W 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 b&w to avif converter for batch processing.

What else can I do with reaConverter?

Convert vector imagesChange image DPIConvert RAW photo formatsConvert CAD formatsChange file date

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