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Freely Available LLMs Compared: Qwen, Gemma, Ministral, Llama and DeepSeek for DE, EN and PL
Compare Qwen, Gemma, Ministral, Llama and DeepSeek by language, task, memory and licence, using separate DE, EN and PL evaluations.
Lukas Wojcik Technology I work with
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I write about the technology I work with: analytics, web development and my own projects. You will also find smart home, networking and music production topics. Pick something you are curious about.
One problem, a clear way through
Understand the issue, try a tool and put the result in context. These three starting points connect articles with useful tools.
My JSON is causing trouble
- Understand: Check a JSON payload
- Try it: Format JSON
- Start with a small example and find syntax errors. Then check whether the values and types fit your application – valid syntax alone cannot tell you that.
What is inside this token?
- Understand: Understand JWTs
- Try it: Inspect a demo token
- Inspect a demo token and understand its fields. Readable claims do not prove a valid signature or permission to access anything.
I want a clean music export
- Understand: Clipper or limiter?
- Try it: Measure loudness and peaks
- Check the loudness and peaks of your export. Measurements help with comparisons; listening and considering your source material still matter.
Latest articles
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Comparing AI Citations and Website Visits: A Practical Bing and Analytics Workflow
A local CSV workflow compares cited pages and measured sessions without inventing a click-through rate or treating missing rows as zero.
Canonical, hreflang and noindex: Why a Page Disappears from the Index
Four small signals decide whether a page is listed in search results. Each one is easy to set and easy to set in a way that quietly cancels the page – including the case where blocking a page keeps it in the index.
European Cookie Rules: The ePrivacy Directive, the Withdrawn ePrivacy Regulation and the Digital Omnibus
The ePrivacy Regulation was withdrawn, the Digital Omnibus would move the cookie rules into the GDPR, and the Council has already cut one of its two articles. Exactly one of these three strands binds a website today, and it is the oldest.
From Free Online Tool to SaaS: Which Feature Justifies a Subscription?
History, monitoring and teamwork can turn a checker into a product. A cost example shows why support makes the difference.
Bare-Metal Performance Diagnostics: Prometheus & Grafana Dashboard for Raspberry Pi
Technical tutorial on deploying a bare-metal performance diagnostic pipeline for Raspberry Pi using Prometheus, Grafana, and custom SoC textfile collectors.
HTTP Security Headers Explained: Which Ones Protect and Which Are Merely Present
Security headers are checked by their names far too often. The name says a rule exists; only the value says whether it does anything – and some values cancel the very rule they belong to.
Ollama, LM Studio, llama.cpp or vLLM: Which Software Fits Local LLMs?
A task-based comparison covering desktop chat, local APIs, Apple optimisation and server workloads.
Plugin Check locally and in CI: findings before the review
How Plugin Check 2.1.0 runs in the admin screen, via WP-CLI and in GitHub Actions, shown on a deliberately broken sample plugin and its corrected version.
Raspberry Pi as a Hardened WireGuard VPN Gateway with Split-Tunneling
Technical tutorial on deploying a secure, high-performance WireGuard VPN gateway on Raspberry Pi with selective split-tunneling and nftables firewall hardening.
Article series
Articles that build on each other, in reading order.
From pixel to server: tracking that holds 5 published · 1 more to come
- The Evolution of Web Tracking: From Log Files to the Server-Side Future
- GA4 & Server-Side GTM: The “Migrate from JavaScript Managed Client ID” Feature Explained
- Server-Side GTM on GCP Cloud Run: Architecture, Auto-Scaling, and Cost Optimization
- GA4 Measurement Protocol: Server-Side CRM Offline Conversion Integration
- Meta Conversions API: Maximizing Event Match Quality (EMQ) and Deduplication
Wiring consent correctly 4 published
Homelab on the Raspberry Pi 7 published · 1 more to come
- Raspberry Pi 4 and 5: Booting From an SSD by Changing the Bootloader
- Uninterruptible Power Supply (UPS) for Raspberry Pi 4 and 5: Top 5 Solutions for High-Load Setups
- Local CI/CD for Raspberry Pi: Automating Docker Compose Deployments
- Autonomous Docker-Compose Home Server with Traefik, SSL, and Watchtower
- Zero-Latency Local Media Server: Jellyfin on Raspberry Pi 5 with Hardware Acceleration
- Raspberry Pi as a Hardened WireGuard VPN Gateway with Split-Tunneling
- Bare-Metal Performance Diagnostics: Prometheus & Grafana Dashboard for Raspberry Pi
Home Assistant without the cloud 6 published
- Zigbee2MQTT vs. ZHA: Building a Highly Reliable Mesh Network in Home Assistant
- ESPHome and ESP32 in Practice: Building Cloud-Free Environmental Sensors
- Presence Detection 2.0: mmWave Radars (LD2410/LD2450) in Lighting Automation
- Local Voice Control in Home Assistant with Whisper & Piper
- WireGuard & Tailscale DMZ: Secure External Access to Home Assistant and Self-Hosted Servers
- Local Energy Management: Integrating PV Inverters and Battery Storage via Modbus TCP
Video surveillance on your own hardware 2 published · 2 more to come
About this blog
I want to explain technical ideas in a way you can follow and use for your own tasks. That means examples, diagrams and sources, and sometimes a small tool to try things out. You can read the blog in German, English and Polish.