File Format Knowledge

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

PDF/A is a constrained PDF profile for long-term preservation and archival reliability.

DOCX is the default modern Word format built on OOXML package parts and XML document markup.

HTML is the standard markup language for web documents and browser rendering.

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

JPEG/JPG is the dominant lossy raster image format for photographs.

PNG is a lossless raster format with strong support for transparency and crisp graphics.

TIFF is a flexible high-fidelity raster image format used in scanning and publishing.

PPTX is the modern OOXML presentation format used for most slide authoring workflows.

WebP is a modern web image format supporting lossy/lossless compression and alpha transparency.

AVIF is an AV1-based image format targeting strong compression efficiency while preserving visual detail.

PDF/X is a print-production subset of PDF focused on reliable prepress interchange.

PDF/UA is an accessibility-focused PDF profile aimed at usable documents for assistive technologies.

DOC is the legacy binary Word format used in older Microsoft Office workflows and long-lived enterprise archives.

PDF/E targets engineering and technical-document workflows that require robust visual and interactive content exchange.

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

JP2 (JPEG 2000) is a wavelet-based image format offering high-quality compression options.

SVG is an XML-based vector graphics format that scales without raster blurring.

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

PDF/VT is a variable/transactional print profile optimized for high-volume personalized output.

HEIF is a high-efficiency image container that can store still images, sequences, and related metadata.

ODT is an OpenDocument text format focused on interoperable office authoring.

XLS is the legacy binary Excel workbook format still found in historical finance and reporting systems.

ODS is the OpenDocument spreadsheet format for open, cross-suite data workflows.

ODP is the OpenDocument presentation format for slide decks in open office suites.

RTF is a text-based rich text interchange format that predates modern XML office packaging.

XLSM is the macro-enabled OOXML workbook format combining spreadsheet data with VBA automation.

XPS/OpenXPS is a fixed-layout page format from Microsoft/ECMA ecosystems.

DOCM is the macro-enabled OOXML Word format that bundles document content plus VBA automation logic.

HEIC is the common extension for HEIF images encoded with HEVC, especially in Apple-centric capture workflows.

XML is a structured markup language for machine-readable documents and data.

EPUB is an e-book packaging format designed for reflowable digital publishing.

PPTM is the macro-enabled OOXML presentation format that combines slides with VBA logic.

PostScript is a page description language historically central to desktop publishing and print workflows.

Markdown is a lightweight plaintext markup syntax that can be rendered into HTML and then exported to PDF.

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.

JSON is a lightweight structured data interchange format built on key/value and array constructs.

PPT is the legacy binary PowerPoint format used in older presentation systems.

TeX is a typesetting system and source format used for high-quality technical documents.

TSV is a plain-text tabular format using tab delimiters, often chosen to reduce comma-escaping issues.

EML represents internet email messages with headers/body and MIME-part content.

FDF is a compact format for exchanging PDF form field data without embedding full page content.

MSG is an Outlook message storage format used in Microsoft mail workflows.

XFDF is the XML-based evolution of FDF for exchanging PDF form and annotation data.

GIF is an indexed-color raster format known for lightweight animations and simple graphics.

BMP is a Windows bitmap raster format with straightforward uncompressed/low-complexity structures.

MOBI is an older e-book format from the Mobipocket family, later integrated into Kindle ecosystems.

AZW is an Amazon Kindle ebook format derived from Mobipocket-era packaging.

AZW3 (KF8) is a newer Kindle format with richer styling/layout capabilities than legacy AZW/MOBI.

CBR is a comic archive convention that stores ordered page images inside a RAR container.

CBZ is a comic archive convention that stores ordered page images inside a ZIP container.