Contributing

How do I crop a video in ffmpeg? Crop a Video in FFmpeg with Variables Bottom right corner: crop=in_w/2:in_h/2:in_w/2:in_h/2. Remove $x pixels from the top…

What version of Java is Tomcat using? Solution: You can look up the Java version Tomcat is really running with in the manager app, which…

How do I download USGS maps? For the US Topo maps that you want to download, simply click the “Download” button under the “Cart” tab.…

How do I get the toolbar back in Safari? When the Safari window gets small, double click the Toolbar to expand. To show Toolbar when…

Is there an app to convert PDF to JPG? 1. PDF Converter Pro (iOS & Android) PDF Converter Pro is a free app which is…

Can MOSFET be replaced? To replace a power MOSFET with an IGBT is easy. The IGBT has the same pinouts, it blocks the same voltage,…

Why does my Macbook Pro keeps hanging? If your Mac keeps freezing, it could be that the SMC needs to be reset. For both MacBooks…

Is it bad to leave a space heater on all night? A modern space heater can be very safe to keep on for long unsupervised…

When does systemd kill service immediately after start? The problem is that when systemd starts the services it immediately stops them. When I use the…

Are there any other caches other than Drupal? Note that there are sometimes caches other than the Drupal cache that can affect website performance. For…