How to Create a Password-Protected ZIP File Without Installing Software
2026-04-15 · 7 min read
Step-by-step guide to creating encrypted ZIP files entirely in your browser using AES-256 encryption — no downloads, no uploads, no third-party software.
Blog
Guides, tips, and deep dives on archive formats, compression, and privacy.
Why You Should Never Upload Sensitive ZIP Files to Online Tools
2026-04-15 · 6 min read
Most online archive tools ask you to upload your file to a server before they touch it. Here is exactly what that costs you, and what to use instead.
ZIP vs 7z vs RAR vs TAR — Which Archive Format Should You Use?
2026-04-14 · 8 min read
An honest comparison of the four major archive formats: compression ratio, speed, compatibility, encryption, and when each one makes sense.
How to Unzip Files Online Without Uploading Them
2026-04-13 · 7 min read
Why most online unzip tools are a privacy risk, how WebAssembly makes browser-based extraction possible, and how to extract ZIP files without sending your data to anyone.
How to Split a Large ZIP File Into Smaller Parts
2026-04-12 · 7 min read
Why you might need to split a large archive, the difference between spanned ZIPs and independently-openable parts, and how to do it in your browser.
The Best Compression Levels for ZIP Files — When to Use Store, Fast, Normal, and Max
2026-04-11 · 7 min read
A practical guide to ZIP compression levels: what each one actually does, the speed-vs-size tradeoff, and which level to pick for different types of files.