Today I changed the accessibility of my blog from HTTP (unencrypted) to HTTPS/SSL. My blog is running WordPress behind an nginx proxy server. However, while the pages themselves loaded successfully from HTTPS, the embedded static resources like JavaScripts, Images, CSS files etc. did not. Here’s how I fixed it. The cause of this issue is that WordPress doesn’t seem to detect the original protocol scheme (HTTPS) correctly when running behind a proxy....

Several months ago, I wrote a blog post about reducing a PDF file’s size. Since then, I’ve used that technique many times. However, you may want to control the DPI (dots per inch) even more specific. Here’s how to do it: gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.7 \ -dDownsampleColorImages=true \ -dDownsampleGrayImages=true \ -dDownsampleMonoImages=true \ -dColorImageResolution=120 \ -dGrayImageResolution=120 \ -dMonoImageResolution=120 \ -sOutputFile=output.pdf input.pdf Hint: This also works on MacOS. Just install GhostScript using Homebrew:...

IPv6 aimed to make Network Address Translation (NAT) obselete as there are so many addresses available that every single device can have its own worldwide unique IPv6 address. However, even with IPv6, using NAT is a very simple way to get your devices behind a Dell SonicWall connected to IPv6 services on the internet. In contrast to going without NAT, all the devices behind your SonicWall will emerge under the SonicWall’s IPv6 address....

Using a single line of GhostScript command on my Ubuntu’s terminal, I was able to reduce the size of a PDF file from 6 MB to approximately 1 MB: gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -sOutputFile=output.pdf input.pdf You can also use the following parameters for -dPDFSETTINGS instead of /screen: /screen – Lowest quality, lowest size /ebook – Moderate quality /printer – Good quality /prepress – Best quality, highest size Update: Read Part 2 of this blog post for more detailled file size reduction settings....

If you have to find out which federal state a city belongs to, you can use the Google Maps API v3. Here is a straightforward JavaScript code snippet: function log(s) { $('#sysout').append(document.createTextNode(s + 'n')); } function getResult(results) { for (var i=0; i -1) { return result['address_components'][j]['short_name']; } } return ''; } function getCountry(result) { return extractFirst(result, 'country'); } function getFederalState(result) { return extractFirst(result, 'administrative_area_level_1'); } function searchLocation() { $('#sysout').empty(); var location = $('#location')....