Tutorials6 min read
How to merge PDF files without uploading them
Most online PDF tools quietly send your documents to a server. Here is how browser-based merging works, and what to check before you trust a tool.
Oct 28, 2026Read article →
Blog
Tutorials, guides and small opinions
Short, specific articles about the work behind the tools: document structure, encoding, metadata and privacy. Written by the people who build the site.
SEO7 min read
A practical on-page metadata checklist
Titles and descriptions are still the cheapest SEO win available. Use this checklist to write metadata that fits the space it is given.
Oct 12, 2026Read article →
Developer5 min read
Why JSON formatting matters more than you think
A wall of minified JSON hides bugs. Consistent indentation makes reviews faster and diffs readable — here is a workflow that works.
Sep 30, 2026Read article →
Guides6 min read
WebP, AVIF or PNG: choosing an image format in 2026
Modern formats save bandwidth, but not every workflow supports them. A short decision guide for photos, screenshots and logos.
Sep 15, 2026Read article →
Privacy5 min read
The privacy case for browser-only tools
If a file never leaves your device, it cannot be leaked by a server. That single property changes how you should evaluate an online tool.
Aug 22, 2026Read article →
Guides6 min read
Passwords, entropy and the math behind strong credentials
Length beats complexity, but only when the characters are actually random. A practical explanation of entropy for people who have to choose passwords.
Aug 5, 2026Read article →