OxygenPDF
Back to Home

OxygenPDF's Blog

Tips, tutorials, and everything you need to know about working with PDFs.

All posts

Scan to Text: Why Your Photo Reads as Garbage
ocr
scanning
privacy

Scan to Text: Why Your Photo Reads as Garbage

A 12 MP phone shoots 474 DPI when the page fills the frame, 237 when it doesn''t. Most failed OCR is a capture problem. Here is what each mistake costs.

Aug 29, 20264 min read
How to Annotate a PDF That Stays Annotated
annotate
edit
privacy

How to Annotate a PDF That Stays Annotated

Highlights live on a separate layer from the page. Viewers can skip it and print dialogs can drop it. Annotate a PDF so your markups survive anywhere.

Aug 26, 20263 min read
Adobe Acrobat OCR: Where It Hides and What It Costs
ocr
acrobat
privacy

Adobe Acrobat OCR: Where It Hides and What It Costs

Free Reader has no OCR button. Desktop OCR costs $239.88 a year; the free web tool wants your file and an account. The full map, plus a third path.

Aug 24, 20264 min read
Convert HTML to PDF in Your Browser, No Upload Needed
convert
create
privacy

Convert HTML to PDF in Your Browser, No Upload Needed

The standard "html to pdf" answer was abandoned in 2023 with an unpatched 9.8-severity CVE. Its replacements want Node.js or your markup on their servers.

Aug 23, 20264 min read
OCR Text Recognition: How a Machine Reads Paper
ocr
accuracy
privacy

OCR Text Recognition: How a Machine Reads Paper

OCR text recognition is six separate stages, and four of them never see a letter. Knowing which one failed tells you how to fix your page.

Aug 22, 20268 min read
How to Make a Scanned PDF Searchable
ocr
scanned-pdf
privacy

How to Make a Scanned PDF Searchable

Running OCR on a scanned PDF is the easy part. Knowing whether it actually read your document correctly is the part every guide skips. Here is both.

Aug 21, 202612 min read
How to Redact a PDF So It Stays Redacted
redact
privacy
security

How to Redact a PDF So It Stays Redacted

Manafort's lawyers drew black boxes over the secrets. Journalists hit copy-paste. Redact a PDF by covering text and the text is still in the file.

Aug 20, 20264 min read
How to Save a Webpage as a PDF on Any Browser or Phone
convert
create
archive

How to Save a Webpage as a PDF on Any Browser or Phone

Pew found 38% of webpages from 2013 are gone. Every browser can already save a page as a PDF. The hard part is a capture without banners and gray boxes.

Aug 18, 20264 min read
Flatten a PDF: What It Means and When You Need It
flatten
forms
e-filing

Flatten a PDF: What It Means and When You Need It

Courts bounce unflattened filings. No undo once you click. What flattening a PDF actually does, and which of the five kinds you need.

Aug 15, 20264 min read

We use analytics to understand how our tools are used and improve the experience. No personal files are ever sent.