#convert

Batch-convert iPhone HEIC images to universally readable JPG files.

Turn an animated GIF into an H.264 MP4 that is far smaller and plays on every device.

The classic forgotten-syntax task: shrinking a photo or converting formats without a GUI — including the gotcha that `1280x` means keep the aspect ratio.

Turn DOT descriptions into flowcharts, trees and network graphs.

Write UML, sequence and architecture diagrams in a readable text syntax.

Pull text, images or page renders out of a PDF from the shell.

textutil -cat concatenates mixed-format files (txt, rtf, docx, html) into a single output document, converting each on the fly.

Rewrite a PDF with lower image resolution to shrink its size.

avconvert is a preinstalled macOS command-line front end to AVFoundation that transcodes video using named presets.

Render functions and data files as charts, including terminal output.

Turn .adoc files into HTML with tables, admonitions and includes.

Shrink animated GIFs and crop, resize or merge them.