Convert LWI to AVIF

LWI to AVIF conversion that keeps your files private. reaConverter runs offline on your computer with full batch processing support.

Looking to change LWI files to AVIF format? reaConverter makes it simple — add your files, select output format, and convert entire folders in one click. Runs entirely on your hardware for maximum speed — no waiting for uploads or server queues.

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LWI to AVIF
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How to Convert Multiple LWI Files to AVIF?

1. Download and Install reaConverter

First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed.

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Install reaConverter

2. Load your LWI files

Launch reaConverter and load the LWI files you want to convert. Add a few files or thousands, batch processing handles them all.

Drag-and-drop LWIs directly into reaConverter or use the folder browser to load entire directories.

Load your LWI files into reaConverter

3. Select AVIF as output format

Set AVIF as output format and select where to save your converted files. Customize quality settings if needed.

Select AVIF as output format

4. Start LWI to AVIF conversion

Press Convert to begin processing. You can watch the progress or minimize and let it run in the background.

Start Conversion

Your converted AVIF files will appear in the destination folder as soon as processing completes.

LWI to AVIF Converter

reaConverter offers the fastest, simplest solution for converting your LWI 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 LWI 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 25, 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
"The step-by-step video makes conversion foolproof. I'd recommend this to my grandma - it's that well-explained!"
DeShawn M. Thompson
DeShawn M. Thompson
Happy User
"I'm really impressed with this software - it converts files between formats incredibly fast!"
Lin Zhang
Lin Zhang
Happy User
"I firmly believe working with JPEG — the universal format supported by all devices and apps—is the wisest choice. reaConverter handles these conversions flawlessly."
Ava Thomas
Ava Thomas
Happy User
"This software just works! My old laptop can’t handle Photoshop, but reaConverter flies through conversions without breaking a sweat. Wi-Fi gone? Still strong!"
Robert Williams
Robert Williams
Happy User

LWI to AVIF Conversion: FAQ

What are LWI files?

LWI is a bitmap image format associated with an image processing program called LightWorks, developed by LightWork Design. This is a British company specialized in offering image design solutions for a variety of business sectors, including product design, point-of-sale configurators and animated content. LWI images are considered rare and might be difficult to open outside the LightWorks program.

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 LWI to AVIF?

Yes! reaConverter instantly converts .lwi 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 LWI to AVIF online?

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

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

The best way to change LWIs 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 LWI to AVIF.

How can I automate LWI 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 LWI 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 lwi to avif converter for batch processing.

What else can I do with reaConverter?

Convert CAD formatsSet picture bit depthChange format settingsSet new DPICopy EXIF data

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