Blogs
Short pieces on working with PDFs and documents: what the formats actually do, where files go wrong, and how to get a clean result.
How Do I Merge PDF Files Without Losing Quality?
Merging PDF files should never blur text or images. Here's why quality loss really happens, how to avoid it, and what to check once your PDFs are combined.
Read the post →PDF Security · · 4 min readHow Do I Sign a PDF Without Printing It?
How to add a typed or drawn signature to a PDF on screen, whether it counts as legal, and how to keep the file safe once it's signed.
Read the post →PDF Security · · 5 min readHow Do I Password Protect a PDF?
How to lock a PDF with an AES-256 password, why a permissions-only lock is weak, and what to do if you forget the password later.
Read the post →PDF Security · · 4 min readWhat Does Your PDF's Metadata Reveal About You?
A PDF can carry your name, the apps you used and dates in places you never see. Here's what's in there and how to clear it before you share.
Read the post →Optimize PDF · · 4 min readWhy Is a Scanned PDF So Large, and What Shrinks It?
A scan is a stack of photos, not a document. Here's why that makes it big, and the three settings that really make the file smaller.
Read the post →PDF Security · · 4 min readWhy Doesn't a Black Box Redact a PDF?
A black box drawn over text in a PDF usually leaves the words in the file. Here's why, and how to redact a PDF so the text is really gone.
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