PDF (Portable Document Format) was developed by Adobe in 1992 and has become the universal standard for document exchange. A PDF file preserves a document's formatting — fonts, images, vector graphics, layout — exactly as intended, regardless of the viewer's operating system, software, or printer. The format is now an open standard (ISO 32000) maintained by the International Organization for Standardization.
PDFs can contain text (stored as vectors, making it searchable and selectable), raster images (JPEGs or PNGs embedded within), vector graphics, hyperlinks, form fields, digital signatures, embedded video, JavaScript, and metadata. Text content in PDFs is resolution-independent — zooming in doesn't reduce text quality. However, images embedded in PDFs are raster and can appear pixelated if exported at low resolution.
FileCurve offers comprehensive PDF tools: compress PDFs to reduce file size, merge multiple PDFs, split PDFs into separate files, rotate pages, add watermarks, add page numbers, and protect with passwords. All processing happens in your browser — your PDFs are never uploaded to external servers.