Convert TN3 to GBR

Stop converting TN3 files one by one. reaConverter processes entire folders to GBR automatically — just drag, drop, and click Convert.

Tired of converting TN3 files one at a time? reaConverter processes entire folders to GBR automatically. Handles large batches reliably without crashes or timeouts.

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TN3 to GBR
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How to Convert Multiple TN3 Files to GBR?

1. Download and Install reaConverter

reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately.

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Install reaConverter

2. Load your TN3 files

Launch reaConverter and drop in your TN3 files. The software queues everything for batch processing with consistent settings.

Add files by dragging them in, browsing folders, or using the right-click menu from Windows Explorer.

Load your TN3 files into reaConverter

3. Select GBR as output format

Pick GBR as output format and choose the destination folder where you want to save new .gbr files.

Select GBR as output format

4. Start TN3 to GBR conversion

Then simply press the Convert button and your conversion will begin in no time!

Start Conversion

Once the conversion is complete, you can find your GBR files in the destination folder you selected.

TN3 to GBR Converter

reaConverter offers the fastest, simplest solution for converting your TN3 files into GBR in seconds - all files processed on your PC for maximum privacy and speed.

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Do more with your files

Converting TN3 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 20, 2026
"As a PCB engineer, I rely on reaConverter to batch convert GBR files to PDF and PNG for client reports. It preserves layer accuracy perfectly, and the command-line automation saves me hours per project. Finally, a tool that handles Gerber files without glitches!"
Michael Chen
Michael Chen
Senior PCB Designer
"Flawless Gerber Conversions – Saved Us Countless Hours! Processes 50+ GBR files at once (drills, copper layers, silkscreens), auto-renames outputs (e.g., ProjectX_top_copper.pdf)"
Arthur Hughes
Arthur Hughes
Satisfied Customer
"An ultra-fast solution for minimizing file sizes. The entire conversion process takes just 3 minutes!"
Logan B.
Logan B.
Satisfied Customer
"I use the online converter — it’s quick and hassle-free!"
Jian Wong
Jian Wong
Happy Online User
"Working in a print studio means constantly juggling obscure file formats. I used to waste hours Googling converters or installing random software — until reaConverter became my Swiss Army knife. Install it once, and you're set forever. No internet? No problem!"
Helen Evans
Helen Evans
Satisfied Customer
"Finally an app that actually opens my weird files! Saves me from format frustration daily."
Kyle Brooks
Kyle Brooks
Happy User

TN3 to GBR Conversion: FAQ

What are TN3 files?

The TN3 format is part of a group of extensions known as Tiny bitmap images, which also includes TN1, TN2 and TNY. TN3s contain high-resolution images created on Atari ST computers. All Tiny formats are currently considered obsolete and rare.

What are GBR files?

GBR is part of the Gerber group of formats — a set of standardized extensions used in the printed circuit board (PCB) industry. Gerber files include 2-D representations of various PCB images, such as copper layers, solder mask etc. They can also describe the electrical connections on such boards, or drilling and milling info associated with them. Similar formats include GBS, CMP and SOL.

Can reaConverter convert TN3 to GBR?

Yes! reaConverter instantly converts .tn3 to .gbr 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 TN3 to GBR online?

If you only need to convert a few TN3 files to GBR format, feel free to try our free online free online TN3 to GBR converter — perfect for small batches with no installation needed!

How can I turn TN3 files into GBR on my computer?

The best way to change TN3s to GBRs 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 TN3 to GBR.

How can I automate TN3 to GBR 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 TN3 files to GBR using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line tn3 to gbr converter for batch processing.

What else can I do with reaConverter?

Convert DICOM imagesResize pictureConvert vector imagesConvert picture color spaceConvert GIS files

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