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apetenchea / design-principles.md
Created July 20, 2026 12:19 — forked from 19h/design-principles.md
Design Principles

Human Interface Design Principles

Version: 1.0 Status: Normative Scope: Interactive software interfaces across all form factors (desktop, mobile, tablet, wearable, automotive, spatial), applicable by extension to any designed artifact (physical products, environments, signage systems).

Normative language: The key words MUST, MUST NOT, SHALL, SHOULD, SHOULD NOT, MAY are to be interpreted per RFC 2119. Requirements are individually numbered (P-x.y for strategic principles, C-x.y for cognitive/perceptual principles, T-x.y for trade-off resolution rules, V-x.y for verification procedures) to permit traceability in design reviews.


@apetenchea
apetenchea / Convert .mov or .MP4 to .gif.md
Created July 17, 2025 04:36 — forked from SheldonWangRJT/Convert .mov or .MP4 to .gif.md
Convert Movie(.mov) file to Gif(.gif) file in one command line in Mac Terminal

This notes is written by Sheldon. You can find me with #iOSBySheldon in Github, Youtube, Facebook, etc.

Need

Convert .mov/.MP4 to .gif

Reason

As a developer, I feel better to upload a short video when I create the pull request to show other viewers what I did in this PR. I tried .mov format directly got after finishing recording screen using Quicktime, however, gif offers preview in most web pages, and has smaller file size.

This is not limited to developer, anyone has this need can use this method to convert the files.