Your PDFs.
Supercharged.

Yes, all tools on Kobra PDF are completely free to use. No hidden fees, no credit card required, and no usage limits. Simply upload your file and get your result.

Absolutely. All files are transferred over encrypted HTTPS connections and are automatically deleted from our servers after processing. We never access, read, or share the content of your files.

No account is needed to use any of the PDF tools. You can optionally create a free account to access additional features like your processing history and dashboard.

You can upload files up to 100MB per file. For most PDF operations, this is more than enough to handle even large documents with many pages.

Kobra PDF supports PDF, Word (DOC/DOCX), Excel (XLS/XLSX), PowerPoint (PPT/PPTX), JPG, PNG, and HTML. You can convert between these formats and PDF seamlessly.

Yes, Kobra PDF works on any device with a modern web browser. There is no app to install — it works directly in Safari, Chrome, Firefox, and other browsers on mobile, tablet, and desktop.

Go to the Merge PDF tool, drag and drop your PDF files (or click to browse), arrange them in the order you want, and click "Merge PDFs". Your combined file will be ready to download in seconds.

Yes, our Compress PDF tool uses smart compression that significantly reduces file size while preserving text clarity and image quality. You can choose different compression levels based on your needs.