Put several passport or visa photos at the exact size on one 4×6, A4 or Letter sheet and print them yourself, without the photos coming out the wrong size.
Save the sound of a video (a lecture, an interview, a song you recorded) as MP3, M4A, WAV or OGG, choose the right quality, and trim it to the part you need.
Add your signature and the date to a PDF by drawing, typing or using a picture of your signature, then send it back in minutes, no printer or scanner needed.
Application forms ask for photos in exact pixels and under a size limit in KB. Here is how to crop, resize and compress a photo so it is accepted the first time.
Learn the regex building blocks (characters, classes, quantifiers, anchors, groups) with practical examples you can test live, from emails to dates to log files.
Photos can reveal where you live, which phone you use and when you were there. See what EXIF data contains and how to remove it without losing quality.
Cut the start and end off a video, keep several clips, or remove the boring middle. Learn the difference between fast and exact cuts and when each is best.
