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PDFShed Blog

Posts on PDF processing, browser-based privacy, free alternatives to paid PDF tools, and how WebAssembly enables real PDF work without a server.

announcements why-we-built

Why We Built PDFShed — A Free, Browser-Based Smallpdf Alternative

The free PDF tool market has a quiet bait-and-switch: free for two tasks a day, then $9/month forever. We thought "$0/month forever" was a better offer. Here's how that's possible technically — and why we're not pivoting to a Pro tier.

May 7, 2026 6 min
technical webassembly engineering

How Browser-Based PDF Processing Actually Works (WebAssembly Deep Dive)

When we say "files never leave your browser," skeptics ask: how is that possible? Compress, merge, OCR — these are heavy operations. The answer is WebAssembly, and it's not magic. Here's the technical deep dive.

May 7, 2026 8 min
privacy analysis

The Hidden Cost of "Free" PDF Tools — What You Pay When You Don't Pay

Free isn't free. The big PDF SaaS — Smallpdf, iLovePDF, Sejda — extract value somehow. Here's what each one actually takes when you use the free tier.

May 7, 2026 5 min
technical compression explainer

PDF Compression Explained — Why Your File Is Big and How to Shrink It

A 30-page Word doc exports to a 2 MB PDF. A 30-page scan exports to an 80 MB PDF. Why? And which compression setting do you actually want? Practical breakdown.

May 7, 2026 5 min
privacy legal best-practices

When to Redact a PDF vs. Just Delete the Page — A Practical Guide

You've been asked to "redact this before sending." Sometimes redaction is right. Sometimes deleting the page is right. The choice has legal, evidentiary, and practical consequences.

May 7, 2026 4 min
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