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PDFCraftFREE

By Craftman Studios

PDF Technical Reference

PDF Technical Glossary

Essential definitions and explanations for PDF standards, encryption algorithms, compression, and character recognition.

Optical Character Recognition (OCR)

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Technology that converts scanned images, certificates, and photos into machine-readable and searchable text layers.

Lossless PDF Compression

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Compression algorithms that reduce file size by stripping redundant metadata streams without degrading text or vector graphic clarity.

AES-256 Encryption

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Military-grade cryptographic encryption protocol used to secure PDF documents against unauthorized opening and content editing.

WebAssembly (WASM)

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High-performance binary instruction format allowing complex C/C++ libraries (like Tesseract and PDF engines) to execute 100% inside your browser RAM.

Searchable PDF

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A PDF document that contains both a visual image layer and an invisible text layer, allowing users to select, copy, and search text using Ctrl+F.