Kostenlose PDF-Tools für den täglichen Dokumenteneinsatz

PDF work falls into a few clear categories: combining documents, reducing file size, switching formats, and securing files. Merging brings separate files into one submission or report. Compression cuts file size for email attachments, upload portals, and storage. Conversion lets you edit a scanned PDF in Word, or archive a Word document as a stable PDF. Protection adds a password to files that contain personal or financial information.

Each tool in this hub focuses on a single task so you can get the job done in seconds. Upload your file, adjust the settings if needed, and download the result. Merging, splitting, and most conversions run locally in your browser using WebAssembly — your PDF never leaves your device.

Merge when you need to send multiple documents as one file — a contract with its annexes, a report with its appendices, or a set of scanned pages assembled into a complete form. Split when only part of a large document is relevant — extract a few pages from a deck or isolate a range from a legal package. Compress when a file is too large for email or exceeds an upload limit.

Convert to Word when you need to edit text in a PDF and the original editable file is unavailable. Convert to PDF when you need a stable, universally readable version of a document. Sign when a form or contract requires your signature. Protect when the file contains sensitive content that should not be opened without authorization.