Troubleshooting Guides
Step-by-step guides for common technical tasks and issues, written for users of all experience levels.
About These Guides
Each guide provides practical, tested instructions for solving specific technical problems or understanding computing concepts. Content is written to be accessible while providing enough depth to be useful for experienced users.
Guides include step-by-step instructions, common issues you might encounter, and answers to frequently asked questions. Where behaviour differs between operating systems, this is noted.
Security is a recurring theme across these guides. Staying safe online goes beyond careful file handling — following layered security best practices helps protect against the broader range of threats that target everyday users.
Available Guides
Safe Downloads and File Types
Learn how to identify safe file types, recognize potentially dangerous downloads, and protect your system from malware.
→ TechnicalMIME Types and File Extensions
Understanding how web servers and browsers use MIME types to identify file content and the relationship with file extensions.
→ ExecutablesExecutable Files Explained: What Are .exe, .msi, and .app?
Understanding executable file formats across platforms: what they do, how they differ, and how to handle them safely.
→ ISOHow to Open .ISO Files: Mounting and Using Disk Images
Step-by-step instructions for mounting, extracting, and burning ISO disc image files on Windows, macOS, and Linux.
→ SecuritySpotting Malware: How File Extensions and Security Are Linked
How attackers abuse file extensions to disguise malware, and what you can do to spot the tricks.
→ SecuritySafe Downloading: File Extensions to Watch Out For
A practical guide to identifying risky file extensions and staying safe when downloading files from the internet.
→ ZstandardWhat Is Zstandard (.zst)? Modern Compression Explained
An introduction to Facebook's Zstandard compression algorithm: how .zst files work, performance benchmarks, and practical usage.
→ ArchivesZIP vs 7Z vs RAR: Choosing the Best Archive Format
Comparing ZIP, 7Z, and RAR archive formats on compression ratio, speed, encryption, and cross-platform compatibility.
→ Video CodecsH.264 vs H.265 (HEVC) vs AV1: Choosing Video Codecs in 2026
Comparing H.264, H.265/HEVC, and AV1 video codecs for quality, compression efficiency, hardware support, and licensing.
→ VideoTop Video Formats in 2026: MP4, MKV, AVI, and More
An overview of the most common video file formats in 2026, with guidance on compatibility, quality, and when to use each.
→ FLACFLAC Files: High-Quality Lossless Audio Explained
What FLAC files are, why audiophiles prefer them, and how to play, convert, and manage lossless audio.
→ AudioMP3 vs AAC vs FLAC vs OGG: Audio Formats Compared (2026)
A practical comparison of MP3, AAC, FLAC, and OGG audio formats covering quality, file size, compatibility, and best use cases.
→ EPUBWhat Is an EPUB File? A Guide to eBook Formats
Understanding the EPUB eBook format: what it is, how it compares to PDF and Kindle formats, and the best ways to read EPUB files.
→ SVGSVG vs PNG vs JPEG: Choosing the Right Graphic Format
When to use SVG, PNG, or JPEG for web graphics: a straightforward comparison of quality, file size, transparency, and scalability.
→ HEICHEIC vs JPEG: Apple's High-Efficiency Image Format Explained
Comparing HEIC and JPEG: file size, quality, compatibility, and when to use each image format.
→ AVIFWhat Is an AVIF File? How to Open and Convert AVIF Images
Everything you need to know about the AVIF image format: what it is, how to open AVIF files, and the best ways to convert them.
→ ImagesWebP vs AVIF vs JPEG: Best Image Formats for Web in 2026
A practical comparison of WebP, AVIF, and JPEG for performance, quality, browser support, and real-world website use.
→