PDF guides

Short, practical guides to getting PDF jobs done properly, and privately.

• How to redact a PDF properlyWhy black boxes and highlighter leave hidden text behind, what real redaction removes, and how to check a redacted PDF before you share it.
• How to compress a PDF without uploading itWhy PDFs get large, what compression actually changes, how to choose a level for email attachments, and when compressing will not help.
• How to OCR scanned PDFs in Hindi, Tamil and other Indian languagesMake scanned PDFs in Hindi, Tamil, Telugu, Bengali, Marathi and other Indian languages searchable, with tips on scan quality and exporting the text.
• What is PDF/A?A plain explanation of PDF/A: what the archiving standard requires, which part and level to choose, and how to convert and check a file.