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GB Converter

Offline GB converter with professional output. reaConverter keeps your files on your machine while you work.

DownloadGB ConverterConvert
GB Files
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4.8

Over 25 years of experience

Your files never leave your PC

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How to Convert .gb Files in Bulk

1. Install reaConverter

Download reliable GB conversion software to convert multiple .gb files and folders in one go.
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Install reaConverter

2. Select GB Files

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

3. Start Conversion

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

Step by step

See It in Action

For quick and effortless GB 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.

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Extra Tools

Do more with your files

Converting GB 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.

Conversion features
Image editing

User reviews

From those who tried it

Average User Rating:
Last updated on June 25, 2026
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
Before reaConverter, I was the ‘File Conversion Guy’ at work — a title I never asked for and definitely didn’t want. Then I found the Watch Folders feature, and suddenly I was free! Now, files convert themselves while I sip coffee and pretend I'm still working hard. My coworkers think I'm a wizard. Thanks reaConverter, for saving my sanity and boosting my fake productivity!
Ben H.
Ben H.
Overwhelmed Office Hero
Creating marketing materials for various platforms requires multiple file versions from single sources. reaConverter's workflow automation lets us generate PNG, JPEG, and SVG variants from AI and PSD files simultaneously. The color profile management ensures brand consistency across all outputs, and the processing speed allows for last-minute changes without delaying deadlines.
Rebecca Turner
Rebecca Turner
Marketing Agency CEO
My photography business relies on fast, accurate processing of images. With reaConverter’s Watch Folder, I drop my RAW photos into a folder and they’re instantly converted to high-res JPEGs with custom naming and watermarking. It’s streamlined my post-processing more than I imagined possible.
Emily R.
Emily R.
Photographer
We receive artwork in all kinds of formats from clients. reaConverter takes care of converting them all to print-ready specs automatically using Watch Folders. It reduces errors, saves us time, and has improved our turnaround time with customers. Incredibly powerful software.
Michael D.
Michael D.
Print Shop Owner
This program is incredibly simple and user-friendly, even beginners can use it with ease. It supports batch processing, works offline, and runs smoothly on my aging Acer Aspire laptop. Best of all, the output quality is outstanding!
Kevin Harris
Kevin Harris
Happy User

Questions & Answers

GB files: Frequently Asked Questions

What are GB files?

GB files are associated with Nintendo video games and include digital copies of ROM cartridges or carts. The latter represent memory attachments that can be connected to home computers or game consoles for loading Nintendo games. GB files are considered uncommon and are compatible with a limited number of image viewers.

Can reaConverter open GB files?

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

How do I change GB to another format?

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

Can I convert GB online?

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

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

The best way to convert GB 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 GB.

How can I automate GB 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 GB 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 gb converter.

What else can I do with reaConverter?

Convert CAD formatsSet file dateConvert GIS filesConvert PDFWatermark image

What formats can I convert a GB file to?
gb → aigb → apnggb → avifgb → bmpgb → bpggb → calgb → cg4gb → cgmgb → cingb → citgb → dcmgb → dcxgb → ddsgb → dgngb → disgb → drwgb → dwfgb → dwggb → dxfgb → emfgb → epigb → epsgb → faxgb → fitsgb → flifgb → gbrgb → gifgb → glbgb → gltfgb → hpggb → hrugb → icogb → iffgb → igesgb → igsgb → jp2gb → jpeggb → jpggb → jxlgb → jxrgb → ktx2gb → mifgb → mtvgb → pclgb → pctgb → pcxgb → pdfgb → pgmgb → picgb → pltgb → pnggb → ppmgb → prcgb → psgb → psdgb → qoigb → qrtgb → radgb → rlagb → sgigb → shpgb → stepgb → stlgb → stpgb → svggb → svgzgb → tgagb → tifgb → tiffgb → u3dgb → webpgb → webpllgb → wmfgb → wmzgb → wpggb → wrlgb → x3dgb → xbmgb → xpm

Discover More

Beyond GB conversion

Convert .gb files in batches of any size, with editing and processing applied along the way. The same tool also handles 700+ other formats, including CAD, medical imaging, and GIS.

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Free trial · Windows 10/11 · v8.0.246 · Files never leave your computer

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