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Portable Document Format
MIME type: application/pdf
PDF is a file format developed by Adobe for presenting documents consistently across all platforms and devices. It can contain text, images, vector graphics, forms, multimedia, and digital signatures.
PDF is based on PostScript and uses a page description language to define text, fonts, images, and vector graphics. Content is organized in a tree of objects referenced by a cross-reference table. Text can be embedded as Unicode with subset-embedded fonts. Images are stored using JPEG, JPEG2000, CCITT, or Flate compression. PDF 2.0 (ISO 32000-2:2020) is the current standard.
PDF compression works by downsampling images, removing embedded fonts subsets, and optimizing the internal structure. BriskTool's PDF compressor can reduce file sizes by 50-90% while maintaining readable quality.
Use BriskTool's PDF merger - drag and drop multiple PDF files, reorder them, and download the combined file. Everything processes in your browser with no uploads.