Was ist PDF?
PDF (Portable Document Format) ist ein von Adobe entwickeltes Dateiformat, das Dokumente mit Text, Bildern und Formatierungen in einer Weise präsentiert, die unabhängig von Hardware, Software und Betriebssystemen ist.
Zuletzt aktualisiert:
What is it?
PDF (Portable Document Format) wurde 1993 von Adobe erstellt und wurde 2008 ein offener Standard. Es erfasst Dokumente - einschließlich Text, Schriftarten, Vektorgrafiken und Bilder - in einem festen Layout, das auf jedem Gerät oder Betriebssystem identisch aussieht.
PDFs können interaktive Elemente wie Formulare, Hyperlinks und digitale Signaturen enthalten. Sie unterstützen Verschlüsselung und Passwortschutz, was sie zum Standard für rechtliche, finanzielle und offizielle Dokumente weltweit macht.
Technical Specifications
Pros & Cons
Advantages
Opens identically on any device, OS, or screen size without font or layout changes.
Password protection, encryption, and digital signatures for sensitive documents.
Efficient compression keeps files small while preserving full quality.
The standard format for professional printing and publishing workflows.
Disadvantages
Editing PDF content requires specialized software - not as easy as Word documents.
Does not reflow text for different screen sizes like EPUB does.
PDFs with many images or embedded fonts can be significantly large.
Untagged PDFs can be difficult for screen readers and assistive technology.
When to Use It
PDF ist die richtige Wahl, wann immer konsistente Formatierung und universelle Kompatibilität erforderlich sind.
Business Documents
Contracts, invoices, reports, and proposals that must look identical for all recipients.
Legal and Official
Court documents, government forms, and certificates require the fixed layout PDF provides.
Publishing
E-books, brochures, and magazines distributed digitally in a print-ready format.
Forms
Interactive PDF forms allow users to fill in and submit data while preserving the document structure.
Convert Your Files Online - Free
Our free online converter supports all major formats. No software to install, no registration required.
Start Converting NowFrequently Asked Questions
Can I edit a PDF file?
Yes, but you need PDF editing software. Adobe Acrobat is the most capable option. Free alternatives include LibreOffice Draw and various online PDF editors for simple changes.
Why is my PDF so large?
Large PDFs usually contain high-resolution images or embedded fonts. Use a PDF compressor to reduce the size - our tool can often reduce PDFs by 50-80% without visible quality loss.
How do I password protect a PDF?
Use a PDF editor or our online PDF protection tool to add password encryption. You can set separate passwords for opening and for editing/printing the document.
Is PDF the same as a scanned document?
Not always. A PDF can contain real text (searchable and copyable) or just an image of text (a scan). Scanned PDFs need OCR processing to make the text searchable.
What is PDF/A?
PDF/A is an ISO-standardized version of PDF designed for long-term archiving. It embeds all fonts and color profiles and prohibits features like encryption that could affect future readability.