Welcome to my personal blog!

I am doing software development in many areas, with my main fields of experience being cross-platform software (C++/Qt), Android apps (native), Linux & DevOps (Bash/Python/Ruby, Docker, ...).

Open Source is one of my passions -- I am a developer and maintainer of many open projects and regularly start contributing to additional ones. Support me on my mission! My other favourite activities include photography and being outdoor as much as possible. I am too volunteering at the local fire department. I went to school at HTL Braunau (Electronics / Software Engineering & Mobile Computing), studied at FH Hagenberg (Mobile Computing) and work currently at Felgo.

Markor v2.9 update is out! Get the update from F-Droid or GitHub!
Continue reading to find out what’s new, improved and fixed in this update.


Install Markor / Update to latest version

You can install (& update) Markor from GitHub Releases and F-Droid.

Google Play
The 2.8.0 version remains available, but no updates will be deployed to Google Play. The available downloads on GitHub are signed by me (gsantner) and have the same signature like on Google Play. This means you can download the *.apk from GitHub and directly install the update if you currently use the Google Play version.

Download the latest Markor update from GitHub here:
Get it on GitHub

Markor is also available from F-Droid, the store for free & open source apps. The *.apk’s available for download are signed by the F-Droid team and guaranteed to correspond to the (open source) source code of Markor. Generally this is the recommended way to install Markor & keep it updated.

Get it on F-Droid

Admonition: block-styled side content

The Admonition Extension allows for easy creation of beautiful colored boxes.
Helpful when you often work with side notes and boxed content.

Snippets / Custom templates

Create as many custom snippets / templates you like by placing textfiles in the subdirectory .app/snippets of your Markor notebook (start) directory.
Open a document and place the cursor on whatever position you want to insert text.
Then click the new snippets button on the bottom-bar (see screenshot) and select the desired snippet.

Note: The snippet directory is automatically created the first time you click the snippets button in the bottom-bar.

The right place to ask

If you have questions or found an issue please head to Markor GitHub Discussions and ask there. Search for same and related issues/questions before, it might be already answered or resolved.

Every day I (gsantner) get many personal emails containing feature requests & questions about Markor. It takes much time to answer these things. Often it is already answered public - or to another person as response in private email. This means wasted time, which can’t be used for improving & developing Markor.

You are kindly asked to discuss at the proper place, which is GitHub Discussions.

Display YAML front-matter block contents

Markor now parses the Markdown YAML front-matter and can display it’s contents in the view mode.
The keys to display can be configured in the Markdown settings category.

Increased performance & under the hood improvements

Markor got lot’s of under the hood improvements in all areas - editor, filebrowser, syntax highlighting, textactions, widgets…


  • Faster screen transitions
  • Short-time filesystem metadata caching for quicker loading of folders at the filebrowser

Charts / Graphs / Diagrams (mermaidjs)

You can now create graphs using mermaidjs syntax in Markdown files.
Checkout the mermaidjs live-editor for more & advanced examples.

Other notable changes & additions

  • Allow to install APK files from filebrowser on click
  • Markdown Table of Contents options
  • Zim: Follow links to other wiki pages
  • todo.txt: Better browsing at editor with dialog & saved search queries
  • Settings option to enable/disable Chrome Custom Tabs
  • Privacy settings option to disallow screenshots of Markor
  • Debloat & drop experimental/unused features, i.e. todo.txt huuid
  • Support Android Day/Night theme system
  • Filebrowser: Show full filename (multiline allowed instead of singleline only)
  • View mode: Open links to folders in filebrowser
  • Markdown: Better Math support, add mhchem chemistry module
  • Per-file settings - In addition to the global settings, many options are now also configurable on a file basis

Comments / Update disussion / feedback

The discussion is here, feel free to join!

All changes in this release

Notice: Check the git history for most recent code changes.

Read more

MemeTastic v1.7 update is out! Get the update now from GitHub or F-Droid!
Continue reading to find out what’s new, improved and fixed in this update.

MemeTastic Image Viewer

  • You can use MemeTastic as a simple & lightweight picture viewer. (Without saving/editing any images). The image viewer uses full width & height of the screen and has complete black background
  • The image viewer now supports a simple rotation gesture in addition to pinch to zoom, image movement and rotation.
  • The rotation happens on 90° steps and is applied only for the currently viewed image till closed.
  • There is a new toolbar menu option at meme editor to view the (untouched) original image.

List of sites for Meme Templates and Funny Images

MemeTastic contains a list of links to sites with Meme Templates and Funny Images. You can show the list and get to these sites using the »Help« option in the bottom navigation »More« section.

You can suggest sites here if you are missing something.

Privacy: MemeTastic - your true Offline app

MemeTastic has no Internet permission, hence it can’t communicate with any network. There is no tracking, calling-home or picture upload in MemeTastic.

Use the share button to send edited images to other apps. You can also use any gallery/file manager app to view MemeTastic created images.


  • Translate app into more languages
  • Make favourite icon in popup smaller
  • Disable menu button when not in selection at “create page”
  • Add rotation gesture to ImageViewer
  • Update list of links to memes & meme templates
  • Replace CI/CD with GitHub Actions

Read more

Markor v2.8 update is out! Get the update from F-Droid or GitHub!
Continue reading to find out what’s new, improved and fixed in this update.


Multi-selection for todo.txt dialogs

Multi-selection was added to Markor’s dialogs, particularly for the todo.txt format.

  • You can now select multiple context & formats to search for, or to insert.

  • The search button (top menu) will also show the multi-selection when you have a file in todo.txt format open. If you select multiple todos and they are not one after the other, then those entries are reorder. Afterwards all selected entries will be highlighted in the editor, and you may apply actions on them. Like mark all of them as done or add one or more contexts.


Search files by content

Since Markor v2.7 you can recursive search for files by their contents.
This search now also checks contents of files encrypted by Markor.

More information


Notice: Development changelog is always available from GitHub. See the history for code changes.

  • Reference to GitHub discussion on More page, by @gsantner
  • Add multi-selection to todo.txt dialogs, by @harshad1 @gsantner
  • In-content search support for encrypted files, #1388 by @opensource21
  • Remove alternative todo.txt naming (tags/categories), by @gsantner

Read more