OC

Guides & Articles

Practical guides for working with files and staying secure — no technical knowledge required.

20 April 2026 · 8 min read

How to compress images for email, Instagram, WhatsApp, and the web without losing quality

A practical guide to reducing image file sizes for every platform — without the blurry results. Covers JPEG, PNG, WebP, and when to use each.

Read article →

20 April 2026 · 7 min read

Merging PDFs for tax returns, job applications, and student submissions: a practical guide

Step-by-step instructions for combining multiple PDFs into one clean document — and what to watch out for when dealing with encrypted or scanned files.

Read article →

20 April 2026 · 6 min read

When to use JPG vs PDF for scanned documents (and how to convert between them)

JPG and PDF serve very different purposes. Learn when each format is appropriate and how to convert between them without losing quality.

Read article →

20 April 2026 · 9 min read

QR codes for small businesses: what to link to, what to avoid, and how to track scans

Everything a small business owner needs to know about generating, placing, and measuring QR codes — without the technical jargon.

Read article →

20 April 2026 · 10 min read

What makes a strong password in 2026? The actual answer from a password researcher

NIST updated its password guidance. Here's what it means for you, why length beats complexity, and how passphrases give you security that's actually memorable.

Read article →

25 April 2026 · 8 min read

UUID, ULID, or NanoID? Choosing the right ID format for your project

A practical guide to the five most common unique ID formats — UUID v1, v4, v5, ULID, and NanoID — covering when to use each, their trade-offs, and why browser-side generation is secure.

Read article →