SVG files are great for vector graphics.
But sometimes you need a PNG.
In this article I show how to build a simple SVG → PNG conversion service in Java using Quarkus and JairoSVG.
Upload SVG → REST API → get PNG.
Full tutorial:
https://www.the-main-thread.com/p/svg-to-png-conversion-quarkus-jairosvg-java
Join us next Monday, March 23rd, at 9am EST for Quarkus Insights Ep. 240 as David Lloyd joins us to discuss Gizmo 2, a modernized, open-source bytecode generation library for Java. It serves as a simplified, higher-level alternative to complex bytecode libraries like ASM, allowing developers to generate Java class files relatively easily.
Quarkus security is easy to start. But turning an API into a real login system is not much harder.
In this tutorial we upgrade a Quarkus Security JPA app from HTTP Basic to:
• Form login
• “Remember me” sessions
• GitHub OIDC login
• Secure cookies
All step-by-step.
https://www.the-main-thread.com/p/quarkus-form-login-github-oidc-remember-me-jpa
Passwordless login is one of the simplest ways to improve security and UX.
In this tutorial I show how to build magic link authentication with Quarkus and Keycloak.
Email token → validation → secure session.
No passwords. No complexity. Just clean Java.
https://www.the-main-thread.com/p/passwordless-login-quarkus-magic-links-keycloak
⏰ Starting soon! Join us for Quarkus Insights Ep. #239 : Reactive Loom with Francesco Nigro
http://bit.ly/quarkusinsights
Bearer tokens are reusable. That’s the problem.
In Quarkus 3.32 you can now implement a custom DPoPNonceProvider and stop OAuth token replay attacks properly.
I built a full end-to-end example with:
- DPoP-bound tokens
- Nonce challenge-response
- Replay protection
- Keycloak Dev Services
Full walkthrough:
https://www.the-main-thread.com/p/quarkus-3-32-dpop-nonce-provider-java-replay-protection
Join us next Monday, March 16th, for Quarkus Insights Ep. 239 as Francesco Nigro joins us to show how a custom Loom scheduler built on top of Netty brings together the performance of event-driven I/O and the simplicity of virtual-thread-friendly blocking APIs.
Markus Eisele
Nicolas Delsaux
quarkusio
HackerNoon