Check your JSON file

11th September 2016

A simple check if you JSON data is valid. This test returns it as a formatted string.

You can also insert an URL to get the data from.


Apache Authentification Generator

21th August 2016

Create your basic authentification f�r Apache webservers with one click.


Online Color Picker

15th February 2015

Choose text and background colors, especially while seeing how they work together.

Use the color configuration boxes to change the settings of the example text. You can either enter values oder click and drag on the color area.


QR Code Generator

7th September 2014

QR Codes are quite handy. Scan with your Phone or App and get the data, like promotional urls, gift codes, contact informations or Wifi settings.

You can simply generate QR codes with this generator. Choose between three modes: URL, vCard and Wifi.


Lorem Ipsum Generator

2nd September 2014

You need a text for a placeholder? Use the standard 'Lorem Ipsum' text. Use the generator below to get texts up to 500 paragraphs (40.000+ words).


Links to remember

1st September 2014
      (last update)

A collection of links for developers of java, c#, objective-c, html, css, javascript, jquery, xml, json, python, perl and whatever.


SVG to PNG Image Generator

30th August 2014

All App developers have the same problem: multiple sizes for their App icons. In addition to that, the sizes changes from time to time, t oreflect the new screen sizes and/or resulution update to ultra-super-mega-high-extended-retina quality.


Coordinate Finder

23th August 2014

Find your location details with code examples for Javascript and Xcode.


Javascript Keyboard Interaction

17th August 2014

Sometimes you want to interact with a website by keyboard. Some built-in command like 'tab' jumps from input field to input field.

In more complex scenarios, like browser games, you might want to use the cursers to control objects oder characters on the screen. Or you could use shortcuts like 'ctrl + s' to save things.


Test your jQuery browser compatibility

9th August 2014

A simple test framework for testing the basic jQuery functionalities in your browser.


Password Generator

8th February 2014

Simple and powerful password generator with custom settings. It can be also used as a webservice.

Example for 20 char, lower and upper case with numbers:



Work in progress

not yet

Bandwidth calculator

Cloud call calculator

Much more...

What is geheimblog?


Dev Tools since 29th June 2005

Name creation of geheim and blog, geheim means secret in German - well no to secret anymore...

Why blog? Because the tools expand like blog articles