100% Secure & Private

G4 Converter

Offline G4 converter with professional output. reaConverter keeps your files on your machine while you work.

DownloadG4 ConverterConvert
G4 Files
Online
4.8

Over 25 years of experience

Your files never leave your PC

Read what our users say →

How to Convert .g4 Files in Bulk

1. Install reaConverter

Download reliable G4 conversion software to convert multiple .g4 files and folders in one go.
reaConverter logo
Install reaConverter

2. Select G4 Files

Select G4s from a folder or drag and drop them into reaConverter, then choose the desired output format.
reaConverter - Load G4 files

3. Start Conversion

Click Convert to start the bulk conversion of all selected G4 files. The process will begin right away.
reaConverter - Start G4 conversion

Step by step

See It in Action

For quick and effortless G4 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.

Download reaConverter

Extra Tools

Do more with your files

Converting G4 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
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
For cross-platform compatibility, JPEG remains the gold standard. reaConverter’s precision conversions ensure perfect results every time, whether for presentations, websites, or client deliverables.
Paul Baker
Paul Baker
Happy User
We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works.
David R.
David R.
IT Solutions Architect
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
Your solution was buried deeper in search results than it should be. After struggling with unclear alternatives, I found your guides — finally, instructions that made sense for a first-time user like me. Excellent work!
Richard E. Miller
Richard E. Miller
Satisfied Customer
An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!
Logan B.
Logan B.
Satisfied Customer

Questions & Answers

G4 files: Frequently Asked Questions

What are G4 files?

The G4 format was used in earlier versions of Microsoft Access, which is a database management software included in the Microsoft Office suite. Presently, G4 files are uncommon and have limited compatibility with image viewing applications.

Can reaConverter open G4 files?

reaConverter fully supports the G4 file format – open, edit, and export G4 files to any other popular file format with ease.

How do I change G4 to another format?

reaConverter is a user-friendly tool for converting G4 files. Once installed on your computer, it allows you to convert all your .g4 files at once with just a few clicks. You can even convert g4 images directly from Windows Explorer using the right-click menu — fast and convenient.

Can I convert G4 online?

If you only want to convert a few G4 files, you are welcome to try our free online G4 converter.

How can I turn G4 files on my computer to another format?

The best way to convert G4 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 G4.

How can I automate G4 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 G4 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 g4 converter.

What else can I do with reaConverter?

Convert CAD formatsSet file dateConvert GIS filesConvert PDFWatermark image

What formats can I convert a G4 file to?
g4 → aig4 → apngg4 → avifg4 → bmpg4 → bpgg4 → calg4 → cg4g4 → cgmg4 → cing4 → citg4 → dcmg4 → dcxg4 → ddsg4 → dgng4 → disg4 → drwg4 → dwfg4 → dwgg4 → dxfg4 → emfg4 → epig4 → epsg4 → faxg4 → fitsg4 → flifg4 → gbrg4 → gifg4 → glbg4 → gltfg4 → hpgg4 → hrug4 → icog4 → iffg4 → igesg4 → igsg4 → jp2g4 → jpegg4 → jpgg4 → jxlg4 → jxrg4 → ktx2g4 → mifg4 → mtvg4 → pclg4 → pctg4 → pcxg4 → pdfg4 → pgmg4 → picg4 → pltg4 → pngg4 → ppmg4 → prcg4 → psg4 → psdg4 → qoig4 → qrtg4 → radg4 → rlag4 → sgig4 → shpg4 → stepg4 → stlg4 → stpg4 → svgg4 → svgzg4 → tgag4 → tifg4 → tiffg4 → u3dg4 → webpg4 → webpllg4 → wmfg4 → wmzg4 → wpgg4 → wrlg4 → x3dg4 → xbmg4 → xpm

Discover More

Beyond G4 conversion

Convert .g4 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.

DownloadreaConverterPurchase

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

reaConverter software