PDFStrong

Free online PDF tools that run in your browser

Merge, split, rotate, convert, compress and protect PDF files. Your documents are processed on your own device and are never uploaded. No account, no watermark.

Organize

Merge, split, extract, delete, reorder and rotate pages.

Convert

Turn PDF pages into images, or images into a PDF.

Optimize & protect

Make a PDF smaller, add a password, or remove one you are allowed to remove.

Inspect

Read a PDF's page count, page sizes and metadata.

Your files never leave your device

Each tool is a program that your browser downloads once and then runs locally. When you add a PDF, it is read from your disk into the memory of the open tab and worked on there, in a background process that is shut down when it finishes.

You can check this yourself. Open your browser’s developer tools, switch to the Network tab and use a tool: no request carries your document. When you press Start over or close the tab, the document is released from memory.

What to expect

  • Free to use, with no sign-up and no limit on how many times you use a tool.
  • Pages are copied from your files, not redrawn, so text stays selectable and images keep their quality.
  • Password-protected PDFs are refused with a clear message instead of producing empty pages. See each tool’s limits on its page.
  • Read more about PDFStrong and how the site is funded.