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PDF operations are one of those recurring pain points that never fully go away. You need to fill a contract template, strip and rewrite document metadata before archiving, generate an invoice from an HTML template, and stamp every page with a branded header. The default answer is a SaaS API subscription that charges per document […]
Generating PDFs on a server is one of those tasks that sounds simple until you actually sit down to do it. HTML-to-PDF rendering drifts between browsers, LibreOffice headless mode is finicky to install, and most SaaS solutions charge per page once you hit volume. Gotenberg solves this cleanly: a single Docker container that bundles headless […]
FFmpeg is the swiss-army knife of media processing, but wiring it into a web application is rarely fun. You either install the binary on every worker, juggle temp directories, sanitise shell arguments, and hope nothing escapes your wrapper – or you reach for a heavy SaaS service and pay per minute of video. Aureum-Cloud/FFmpeg-API takes […]
So you want to set up email on a subdomain. Maybe you’re trying to route support@help.yourdomain.com to your helpdesk, or you want newsletters@mail.yourdomain.com to run through your ESP without torching your main domain’s reputation. Whatever the reason, you’ve landed on the right page. MX records for subdomains are one of those DNS topics that seem […]
If you have ever embedded an audio player on a podcast site, a music portfolio, or a media archive, you have probably noticed that pretty rendered waveform behind the playhead. Libraries like Wavesurfer.js and Peaks.js can draw those visuals on the client, but decoding a 60-minute MP3 in the browser is slow, memory-hungry, and unreliable […]
Managing multiple social media accounts is exhausting. Between juggling different platforms, scheduling posts at optimal times, and keeping up with analytics, it’s easy to feel overwhelmed. Commercial tools like Buffer and Hootsuite work well but come with hefty subscription fees and feature limitations. Enter Postiz – an open-source, self-hosted social media scheduling platform that puts […]
Your server is being probed right now. Not maybe — definitely. Every public-facing IP on the internet gets hit by automated scanners, brute-force bots, and malware C2 callbacks within minutes of going live. The attackers aren’t targeting you specifically — they’re running scripts that sweep the entire IPv4 space on a loop, and your server […]
Updated: 03/2026 When I first put together the open-source KPI roundup back in October 2025, the landscape was already impressive. Fast forward to early 2026 and things have moved fast — we’re talking major version releases, AI features landing in free tiers, and a couple of genuinely exciting new tools that deserve a spot on […]
A lot has evolved since I shared my top Docker picks in 2025. I’ve streamlined the whole setup, cut the noise, and focused on what I actually use — locally and externally. Better organised, better documented, and somehow more enjoyable than ever. Could not stick to 10, so its 10++++! Why Self-Host with Docker in […]
Spam hasn’t gone anywhere. Keep coming back to it, as I hate cleaning up my INBOX and so do my clients! In fact, AI-generated spam has made the problem noticeably worse through 2025 and into 2026 — it’s more convincing, passes basic heuristic checks that would’ve flagged template spam instantly, and arrives in higher volumes. […]
PORTALZINE® NMN
Alexander Gräf
Stettiner Str. Nord 20
DE-49624 Löningen
PORTALZINE® NMN
Alexander Gräf
Stettiner Str. Nord 20
DE-49624 Löningen
