The PDFIntro blog
Privacy, file formats, and practical PDF know-how — written for people who care where their documents go.
How to Merge PDF Files Without Uploading Them Online
Combine PDFs entirely in your browser — no uploads, no waiting, no privacy trade-off.
How to Split a PDF Into Separate Pages
Turn one PDF into individual pages or custom ranges, packaged as a zip — locally.
Why Browser-Based PDF Tools Are Better for Privacy
Server-side PDF tools see your documents. Browser-based ones can’t. Here’s why that matters.
How to Compress PDF Files Without Losing Too Much Quality
Understand what compression actually does so you can shrink files while keeping them readable.
How to Convert Images Into a PDF
Turn JPGs, PNGs and WebP images into a single tidy PDF, right in your browser.
How to Rotate PDF Pages the Easy Way
Fix sideways scans by rotating specific pages — or the whole document — in seconds.
How to Remove Pages From a PDF
Delete unwanted pages — blank scans, cover sheets, duplicates — without any upload.
How to Extract Pages From a PDF Document
Pull a chapter, a single form, or a range of pages into a brand-new PDF.
The Safest Way to Work With Sensitive PDF Files
A practical checklist for handling contracts, IDs and medical PDFs without leaking them.
Best Free PDF Tools That Run in Your Browser
What to look for in a browser-based PDF toolkit — and which tasks it handles best.