Are my files uploaded to a server?

No. Every tool on PDFStudio Pro runs completely inside your browser. Your files stay on your device and are never sent to any server.

Is PDFStudio Pro really free?

Yes. All tools are free to use with no daily limits, no account required and no watermarks added to your files.

Does it work on mobile phones?

Yes. The site is built for both mobile and desktop browsers. You can merge, compress and convert PDFs and images directly from your phone.

What browsers are supported?

Modern versions of Chrome, Firefox, Safari, Edge and other Chromium-based browsers work best. JavaScript must be enabled.

Is the site optimized for Google Core Web Vitals?

Yes. Scripts are deferred, CSS is lightweight, layout shift is minimized, and analytics load after the page is interactive for better LCP and INP.

Can I use these tools offline?

Once the page and libraries have loaded, most tools continue to work even if your connection drops, because processing happens locally.

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.

Popular tools

Merge PDF
Split PDF
Compress PDF
Protect PDF
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JPG to PDF
Redact PDF
Compress Image
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Bates Numbering
Flatten PDF

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