Game Server Guides and File & Image Tools

Hands-on articles on self-hosting Palworld, Minecraft and Satisfactory servers on a home Linux box, alongside file and image tools that run right in your browser.

Files selected in the tools are never uploaded; every calculation runs inside your browser.

Self-Hosted Game Servers

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Build Your Own Palworld Server, Part 1: Launch It on Linux With Docker New series
The start of a five-part series on hosting a Palworld server at home - from install to friends joining.
Palworld Server, Part 5: Vendor & Wanted-NPC Markers on the Map New series
The latest part: 164 vendor and wanted-NPC markers on the live map, with coordinate math and cache traps.
Build Your Own Minecraft Server, Part 1: A Java Server on Linux New series
The Java version trap, the eula step, key settings, and a systemd unit that survives reboots.
Minecraft Server, Part 2: A Fabric Mod Server, Run With Docker New series
Fabric install, the file ownership trap, and world backups without stopping the server.
Self-Hosting a Satisfactory Dedicated Server With Docker New series
What each of the three ports does, the shutdown trap that eats progress, and installing mods with ficsit.
Satisfactory Factory Calculator - Down to Alternate Recipes Calculators
Click a target part and the whole production line is drawn with machine counts, right in the browser.

Guides and Operation Notes

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Palworld Server, Part 2: The Save Trap, Safe Shutdown, and Backups New series
The shutdown that silently discards progress, plus automatic backups - traps from real operation.
Palworld Server, Part 3: Build a Browser Admin Page New series
A server control page with buttons, built in Node with zero external packages.
Palworld Server, Part 4: Power Control, Console, and a Live Map New series
Power on/off, console logs, and plotting player positions on a map.
Hash-Based Duplicate File Checks Guide
A short guide to SHA-256 duplicate checks and why hashes are more reliable than filenames.
Find Duplicate Images With Python and Print Delete Candidates Code
A practical SHA-256 example for finding identical images and reviewing candidates before deletion.
Image Information Analysis Guide
How to inspect dimensions, aspect ratio, and megapixels in the browser before choosing thumbnail settings.
Choosing WebP Conversion Settings Guide
How to pick quality, max width, and output format, and convert images in the browser.
Check EXIF Privacy Before Sharing Photos Guide
How capture time and GPS location stay inside photos, and how to remove them.
Serving Large Files From PHP Safely Code
Output buffers, non-ASCII filename headers, and CDN timeouts - streaming fixes from real operation code.
Bulk Thumbnail Generation With Python Pillow Code
An idempotent batch thumbnail script covering RGB conversion and skip rules.
Protect Private Files With PHP and Nginx Guide
Separate file folders from the public root and serve them only through an authenticated router.
Shareable Source Examples Code
Short examples for hash duplicate checks, authenticated media routing, and Nginx deny rules.
Automation Code Lessons Lesson
Reusable lessons from real operation code: dedupe, scheduled jobs, and SQLite history patterns.
Avoiding Common cron Schedule Mistakes Ops note
Frequent cron expression mistakes and safe scheduling rules for small servers.
Server Status Webhook Alerts With a Shell Script Ops note
Send CPU, memory, and disk reports to a messenger using only top, free, and df.
How to Estimate Image Server Storage Capacity Ops note
Separate originals, thumbnails, and backup copies to size your disk correctly.
Operation Notes Ops note
Practical notes for checking response time, error rate, and cache behavior on a small PHP site.