Frequently Asked Questions
Everything you need to know about using PDF99.
Frequently asked questions
Yes, completely. No subscription, no premium tier, no file size cap and no account needed. Every tool is fully functional at no cost. The service is funded by a single advertisement per page.
No. Every tool on PDF99 works without any registration. Just open the tool page, upload your file and you're done.
No hard limit. Very large files may take a little longer to process, but there's no imposed cap on file size or page count.
Yes. All uploads use SSL encryption. Files are permanently deleted from our servers within one hour. Many tools process files entirely in your browser, so nothing is uploaded at all.
All modern browsers — Chrome, Firefox, Safari, Edge and Opera on desktop and mobile. Internet Explorer is not supported.
Yes. The interface is fully responsive and works on all modern smartphones and tablets on both iOS and Android.
Go to the JPG to PDF tool. Add your images, arrange them, set the page size and click Convert. Your PDF is ready in seconds.
Use the Compress PDF tool. Upload your PDF, choose a quality setting and download the compressed version.
Use the Merge PDF tool. Add two or more PDF files, arrange them in the order you want, then click Merge PDFs.
Yes — use the Split PDF tool. Enter a page range like 1-3, 5, 7-9 and download the extracted pages as a ZIP file.
Use the Rotate PDF tool. Upload your PDF, choose the rotation angle and which pages to rotate, then download.
Use the Watermark PDF tool. Upload your PDF, enter your watermark text, choose the opacity and download.
Never. PDF99 does not add any watermarks, logos or branding to any output. The only mark on your file is the one you choose to add yourself.
First, make sure JavaScript is enabled in your browser. Then check the browser console for errors (F12 → Console). If the PDF engine hasn't loaded yet (jsPDF, PDF-lib or PDF.js), wait a moment and try again. If the problem persists, contact us.