"View > Outline" to only see outline
Selection Tool
A Direct Selection Tool
Deke's Techniques, videos and tutorials from deke.com
Bézier Curve
The Bézier Game
Animated Bézier Curves - Jason Davies
cubic-bezier(.17,.67,.83,.67) ✿ cubic-bezier.com
深度掌握 SVG 路径 path 的贝塞尔曲线指令 « 张鑫旭-鑫空间-鑫生活
gkurve: simpler vector graphics - Stephen Gutekanst - Software You Can Love 2022 - YouTube used in zig-lang#Mach engine
Illustrator
Affinity Designer vs. Adobe Illustrator: can Designer replace Illustrator? - 99designs
DART 100 Illustrator Section: Creating A New File - YouTube
Adobe Illustrator Tips and Tricks - Satori Graphics - YouTube
Illustrator Introduction Online Course - YouTube
Illustrator 基礎教學 - YouTube
Inkscape
Inkscape
Inkscape Wiki
Welcome to Inkscape Community!
Release notes/1.0 - Inkscape Wiki
Learn | Inkscape
Inkscape for Adobe Illustrator users - Inkscape Wiki
Inkscape Tutorials for Beginners - YouTube
Inkscape Advanced Tips - YouTube
Inkscape Basics - YouTube
Inkscape Beginner Tutorials - YouTube
Inkscape Intermediate/Advanced Tutorials - YouTube
Inkscape Explained - YouTube
Vectorizing Image
inkscape - Convert a line drawing from raster to vector LINES - Graphic Design Stack Exchange
AutoTrace centerline tracing
Online
Convert PNG to SVG (Online & Free) — Convertio
Convert PNG to SVG online, free .png to .svg converter
PNG or JPG to SVG - 88,139 Images Converted Last Month Overlaying fills ("Stack Scan"?), difficult to modify
Inkscape
Inkscape: How to Trace Bitmap - YouTube
Inkscape tutorial: Tracing bitmaps | Inkscape
Inkscape Tutorial: Vector Image Trace - YouTube
Illustrator
Fill Stroke and Outline
In Illustrator, there are line objects and shape objects. Lines are made of points, and shapes are made of boundaries.
DART 100 Illustrator Section: Fill and Stroke - YouTube
Path to Shape
DART 100 Illustrator Section: Stroke To Outline - YouTube easy
"Object > Path > Outline Stroke" to create outline from path
How do I transform a stroke from a path into the path itself in illustrator CS5? - Quora
"Object > Expand or Object > Expand Appearance"
"Type > Create Outlines" for texts
Convert a solid filled shape into a single line. | Adobe Community
Rasterize image, "Image trace", using LINE ART preset.
Use "Offset Path" tool
Shape to path
Fill path to stroke in SVG - YouTube
Add stroke to current paths until they almost meet (forming a line in the middle), then "Object > Image Trace > Vectorize the Contour", delete the original paths to get the path in the middle
Convert Fill Line to Stroke in Illustrator CS3 - PrintPlanet.com
Make the current paths open, "Object > Path > Average" to get the path in the middle
"Blend tool" (W) will also work
Adobe Illustrator: How to convert shape to line? | Adobe Community
How do I transform a stroke from a path into the path itself in illustrator CS5? - Quora
Convert shape to line with a stroke in Illustrator - Graphic Design Stack Exchange
Convert Fill to Stroke in Illustrator CS5 | Adobe Community
Convert a solid filled shape into a single line. | Adobe Community