MD file icon

MD File Extension

Markdown Documentation Format

What is MD file?

File with .MD extension contains a plain text document created using Markdown language. Many dialects of Markdown language exist, but all use the same set of tags and similar syntax. Markdown tags define such text formatting elements as:

  • Bold, italics, underline attributes,
  • Text alignment,
  • Headers,
  • Table format,
  • Lists,
  • Citations,
  • Image and HTML code embedding

MD files can also use the .MARKDOWN suffix. MD files can be easily converted into and RTF format, although initially MD files were only used for HTML documents, typically help files. Since MD is a text file, it can be opened and edited with and text editor to created formatted documents. Markdown languages uses simple and easy to read syntax.

MARKDOWN was developed in 2004. The main goal of the designers of this language was to offer users simple and intuitive markup system, unlike HTML, for example, for editing and creating documents. MD file interpreter, which converted MD files into a HTML documents, was written in Perl. Many variations of Markup language were developed since then. Finally, in 2016, RFC 7763 and 7764 documents specified basic and extended standard for Markup, including CommonMark, GFM, MarkdownExtra, and others.

Programs which support MD file extension

Below you will find an index of software programs that can be used to open MD files divided into 4 categories according to system platform supported. Files with MD extension, just like any other file formats, can be found on any operating system. The files in question may be transferred to other devices, be it mobile or stationary, yet not all systems may be capable of properly handling such files.

Programs that support MD file

Updated: 05/09/2022

How to open file with MD extension?

Problems with accessing MD may be due to various reasons. On the bright side, the most encountered issues pertaining to Markdown Documentation Format files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. The list below will guide you through the process of addressing the encountered problem.

Step 1. Download and install Windows Notepad

Install software to open MD file Problems with opening and working with MD files are most probably having to do with no proper software compatible with MD files being present on your machine. This one is an easy one. Select Windows Notepad or one of the recommended programs (for example, gVim, Daring Fireball Markdown, GitHub) and download it from appropriate source and install on your system. The full list of programs grouped by operating systems can be found above. One of the most risk-free method of downloading software is using links provided by official distributors. Visit Windows Notepad website and download the installer.

Step 2. Verify the you have the latest version of Windows Notepad

Update software that support file extension MDIf the problems with opening MD files still occur even after installing Windows Notepad, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Windows Notepad is available. It may also happen that software creators by updating their applications add compatibility with other, newer file formats. This can be one of the causes why MD files are not compatible with Windows Notepad. The latest version of Windows Notepad should support all file formats that where compatible with older versions of the software.

Step 3. Set the default application to open MD files to Windows Notepad

If the issue has not been solved in the previous step, you should associate MD files with latest version of Windows Notepad you have installed on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Associate software with MD file on Windows

Selecting the first-choice application in Windows

  • Choose the Open with entry from the file menu accessed by right-mouse clicking on the MD file
  • Click Choose another app and then select More apps option
  • The last step is to select Look for another app on this PC option supply the directory path to the folder where Windows Notepad is installed. Now all that is left is to confirm your choice by selecting Always use this app to open MD files and clicking OK.
Associate software with MD file on Mac

Selecting the first-choice application in Mac OS

  • By clicking right mouse button on the selected MD file open the file menu and choose Information
  • Find the Open with option – click the title if its hidden
  • Select the appropriate software and save your settings by clicking Change all
  • A message window should appear informing that This change will be applied to all files with MD extension. By clicking Continue you confirm your selection.

Step 4. Check the MD for errors

You closely followed the steps listed in points 1-3, but the problem is still present? You should check whether the file is a proper MD file. Problems with opening the file may arise due to various reasons.

Check MD file for viruses
1. Verify that the MD in question is not infected with a computer virus

If the file is infected, the malware that resides in the MD file hinders attempts to open it. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. MD file is infected with malware? Follow the steps suggested by your antivirus software.

2. Ensure the file with MD extension is complete and error-free

If the MD file was sent to you by someone else, ask this person to resend the file to you. It is possible that the file has not been properly copied to a data storage and is incomplete and therefore cannot be opened. When downloading the file with MD extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Verify whether your account has administrative rights

There is a possibility that the file in question can only be accessed by users with sufficient system privileges. Switch to an account that has required privileges and try opening the Markdown Documentation Format file again.

4. Make sure that the system has sufficient resources to run Windows Notepad

The operating systems may note enough free resources to run the application that support MD files. Close all running programs and try opening the MD file.

5. Ensure that you have the latest drivers and system updates and patches installed

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with Markdown Documentation Format file. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle MD files.

Conversion of a MD file

File Conversions from MD extension to a different format
File conversions from other format to MD file
Do you want to help?

If you have additional information about the MD file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on MD file.

Top File Extensions
Show more
File Extension of the day
fp3 icon


User Specific Settings Format

FP3 files are used for storing user setting data; files with this extension are used by FastReport tool to create page layout files.

Last updated