OCR

Image correction step that straightens tilted scanned pages.

Score indicating OCR engine certainty in recognized text.

PDF where text can be found and copied, often via OCR.

CSV is a plain-text table interchange format where each row is serialized into delimited fields.

TXT is plain text without embedded rich formatting semantics.

DjVu is a format designed for efficient storage of scanned documents, often with layered text/image approaches.

Portable Document Format is a fixed-layout document standard designed to preserve appearance across software, operating systems, and devices.

XLSX is the standard modern Excel workbook format using OOXML package + worksheet XML parts.

JBIG2 is a bi-level image compression standard optimized for scanned text-like pages.

Machine-readable text content embedded alongside scanned page imagery.

Converting images into black-and-white pixels for OCR and compression workflows.

Bi-level image compression method used in scanned monochrome content.

Fax-era bi-level image compression commonly used for monochrome document scans.

Combine multiple PDF files into a single document.

Reduce file size without sacrificing readability.

Convert Excel spreadsheets into PDF files.

Convert PDF tables and data into Excel spreadsheets.

Split one PDF into multiple files by page range.

Add text or image watermarks to PDF documents.