RE File Extension

Python Regular Expressions Source Code

File Type re
Popularity
4.5 (31 vote)
Application Sublime Text
Category Developer Files

What is a RE file?

Files with the RE extension are specifically tied to Python Regular Expressions Source Code, a Developer Files type, and there are 1166 files in this category.

RE files are supported by Windows, Linux and Mac OS. If you need to open a RE file, you can use one of 4 programs, such as Sublime Text, Atom and PSPad.

Windows

Mac OS

Linux

How to open a RE file?

If you’re having difficulty opening a RE file, it is often due to not having the correct software. To solve the problem, choose a compatible program from the list. Then follow the link to the official developer site, download the software, and install it on your device.

Sublime Text, Atom and PSPad stand out as the preferred programs to manage RE files effectively. To install the latest version of Sublime Text on your computer, visit the Sublime HQ Pty website where you can download the version available for all operating systems.

After installation, your operating system should automatically open RE files with Sublime Text.

Set Sublime Text as the default RE handler

Choose an app to open a file on Mac

Right click or use Control + left click on the desired RE file to launch the file options menu;
Choose "Open in Application" and click "Other";
Next, at the bottom of the window, you will see the "Enable" menu, in which "Recommended Programs" is selected by default;
In this menu, select "All Programs", then find Sublime Text and check the box next to "Always open in the application."

Set default programs for Windows

Start by right-clicking on your RE file, then select "Open With" and continue by clicking "Choose another app" from the options provided;
In the pop-up window, find and select the Sublime Text application from the available options;
Make sure the "Always use this app" checkbox is checked and click "OK" to confirm your choice as the default app for opening RE files.

Convert files to and from RE

Be aware that converting a RE file may reduce some features, but you can usually revert it to the original format.

Converting Files to RE Format

ARC to RE

Effective solutions for RE file problems

There are some common issues with RE files that can be resolved easily by making minor adjustments to your software. Below, you’ll find these issues along with practical troubleshooting tips.

What are the methods to detect if my RE file has been corrupted?

RE developer files that have become corrupted may display one or more of the following symptoms:

An unexplained increase in the size of the RE file;
Trying to work with the archive in Sublime Text or other programs causes instability or program crashes;
The file does not open correctly or displays error messages;
While working with the file, error alerts are encountered;
The file exhibits poor performance during editing operations in Sublime Text;

Why does Sublime Text crash?

Insufficient software updates can contribute to Sublime Text crash. To avoid this, make sure that you have installed the latest updates for Sublime HQ Pty products.

Restarting your computer can resolve numerous common problems, so it should be the initial step before changing any software-related settings.

How to repair a corrupted RE file?

Open the damaged RE file in a recovery program and select the "Repair" menu item to start the repair operation. Please wait patiently for the recovery process to finish as it will automatically repair the damaged developer files.

How to edit a RE file?

To make changes to RE files, you need specialized software that allows both opening and editing the developer files. Online RE editors offer fewer capabilities than applications optimized for Python Regular Expressions Source Code.

Best RE editors 2026

Based on these criteria, we have prepared a list of available RE editors.

RE Editor Software	Developer	Platforms	Overall Rating
PSPad	Jan Fiala	Windows	4.7 out of 5 (41 review)
Notepad++	Notepad++ Team	Windows	4.6 out of 5 (37 reviews)
Sublime Text	Sublime HQ Pty	Windows, Mac OS, Linux	4.6 out of 5 (39 reviews)
Atom	-	Windows, Mac OS, Linux	4.1 out of 5 (36 reviews)

‹ README | RDP ›