BIG Converter

Our highly efficient software makes it easy to convert millions of BIG files and folders in a single operation.

How to Convert .big Files in Bulk

1. Install reaConverter

Download reliable BIG conversion software to convert multiple .big files and folders in one go.

2. Select BIG Files

Select BIGs from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load BIG files

3. Start Conversion

Click Convert to start the bulk conversion of all selected BIG files. The process will begin right away.
reaConverter - Start BIG conversion

Convert BIG on your PC

For quick and effortless BIG file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.

Do more with your files

Converting BIG files for use in a larger project? 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.

User Reviews

Average User Rating:
Last updated on February 27, 2025
"I'd been searching for reliable conversion software forever — reaConverter has everything I need! After installing and watching the tutorial, I had my files converted to the perfect format in minutes. Flawless experience!"
Sanjay Mehta
Satisfied Customer
"Converts files in seconds! Finally a tool that's both fast and simple to use."
Wei Chen
Happy User
"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
"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"
Logan B.
Satisfied Customer
"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
Happy User
"After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need."
Walter Morgan
Satisfied Customer

BIG files: Frequently Asked Questions

Can reaConverter open BIG files?

reaConverter fully supports the BIG file format – open, edit, and export BIG files to any other popular file format with ease.

How do I change BIG to another format?

reaConverter is a user-friendly tool for converting BIG files. Once installed on your computer, it allows you to convert all your .big files at once with just a few clicks. You can even convert big images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert BIG online?

If you only want to convert a few BIG files, you are welcome to try our free online BIG converter.

How can I turn BIG files on my computer to another format?

The best way to convert BIG files on your PC is to get 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 BIG.

How can I automate BIG files conversion?

reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.

Can I convert BIG files using scripts or the command-line interface?

reaConverter provides full access to all its features from the Windows command-line shell, including the command-line big converter.

What else can I do with reaConverter?

Convert vector imagesConvert picture color spaceConvert RAW photo formatsConvert PDFWatermark photo

What formats can I convert a BIG file to?

Discover more

Explore our efficient BIG file converter that saves you time and effort by converting multiple .big files into different formats.
reaConverter software