Is PDFStudio Pro free?

Yes. Core tools are free to use with no daily limits, no account required and no watermarks on output files.

Are my files uploaded?

No. Core tools process files entirely in your browser. Your documents never leave your device and are not stored on our servers.

Can I use it on mobile?

Yes. The layout works on modern Android and iOS browsers.

What file formats are supported?

PDF, JPG, PNG, Word (.docx), text, Excel/CSV, and common video/audio formats for media tools.

Is there a file-size limit?

We do not set a server-side limit. Practical limits depend on the memory of your device.

Can I merge PDFs without registration?

Yes. Open Merge PDF, add files, reorder if needed and download. No account is required.

Does the tool add a watermark?

No. Output files contain only your content.

How do I compress a PDF without losing quality?

Use Compress PDF and choose a quality level that balances size and appearance. Text stays sharp; images are re-compressed.

PDFStudio Pro — Free Online PDF, Image & Video Tools

Merge, split, compress, convert, protect and edit PDF files entirely in your browser. Also compress images, apply filters, extract video frames and more. No uploads, no account, no watermarks.

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