File Format
PDF .pdf
- MIME
- application/pdf
- Type
What is a PDF file?
Portable Document Format — fixed-layout pages with text, vectors, images, forms and signatures. The universal format for sharing and printing documents.
Strengths
- Looks the same everywhere
- Supports forms, signatures and encryption
- Archival profile PDF/A
Trade-offs
- Hard to edit
- Scanned PDFs have no text until OCR
Open & convert PDF files
Free Sada Files tools that work with PDF — most run privately in your browser.
- Merge PDFCombine PDFs into one file in any order, with bookmarks per file, blank-page inserts and alternate-page merging for duplex scans.
- Compress PDFReduce PDF file size with presets or an exact target size — control image DPI and quality, downsample, subset fonts and strip metadata.
- PDF to WordConvert PDF to Word with visual page preservation, reconstructed layout, or editable text. Choose visual mode for visible images, tables, signatures and stamps; choose editable mode to change the text.
- OCR PDFMake scanned PDFs searchable with OCR in 100+ languages — deskew, rotate, clean, and output PDF/A if you like.