micro-courses for developers

Master one thing
in an afternoon.

Short, beautifully written courses on the things you keep meaning to learn. Read. Take the exam. Earn a badge — a real certificate, verifiable by URL.

browse courses how it works
/1
verifiable URL
every badge has its own public page
/2
PNG + PDF
optimized for LinkedIn or print
/3
cryptographic
hash signed at the moment of issue
a
KeepLearning
certificate · b_9k2xr
presented to
Maria Reyes
for completing
REST APIs
issued  March 11, 2026
verified · 12 / 12
keeplearning.dev/badges
a
KeepLearning
certificate · b_7m3zq
presented to
Maria Reyes
for completing
Git fundamentals
issued  February 02, 2026
verified · 10 / 12
keeplearning.dev/badges
a
KeepLearning
certificate · b_4f29q
presented to
Maria Reyes
for completing
CSS Flexbox
issued  April 22, 2026
verified · 11 / 12
keeplearning.dev/badges

Featured

all courses →
01
CSS Flexbox
95 min read·8 lessons

CSS Flexbox

One-dimensional layout, demystified.

02
REST APIs
140 min read·10 lessons

REST APIs

The conventions, the verbs, the gotchas.

03
Git fundamentals
180 min read·12 lessons

Git fundamentals

From commits to rebases, end to end.

ƒ
04
JavaScript Functions
120 min read·9 lessons

JavaScript Functions

Closures, hoisting, this — finally clear.

community

Earned in the last 24 hours.

full feed →
M
Maria Reyes
@mreyes
earned the
CSS Flexbox
badge
2 hours ago
J
Jonas Lee
@jonas
earned the
TypeScript essentials
badge
4 hours ago
P
Priya N.
@priya
earned the
REST APIs
badge
6 hours ago
A
Adam Strick
@adams
earned the
Promises & async
badge
11 hours ago

How it works

01

Read

Sit down with a course. Most finish in a single afternoon. No signup needed.

02

Take the exam

12 questions, 15 minutes, AI-graded. Sign up before this part.

03

Earn the badge

A real certificate, verifiable by URL. Share it where it counts.