Invite Your Friends & Both of You Get Rewards !
  • Chat with Your PDFs

    • Talk to your papers, reports, and textbooks intelligently with Al, powered by ChatGPT.
    • Answers provide page links to the original file.
    • Keep your PDF chat records for easy reference and review.
    • Use Al prompts to activate PDF tools.
    Chat with Your PDFs
  • Crop PDFs with Ease

    • Uniformly adjust PDF page size.
    • Quickly adjust the margin size.
    • Support customized cropping of PDF pages.
    Crop PDFs with Ease
  • Organize PDFs More Efficiently

    • Convert PDFs to Office and convert Office to PDF quickly.
    • Let you crop, compress, merge, replace text, rotate pages of PDFs, and so on.
    • Can set passwords and redact PDFs to protect your files.
    • Share files with others via e-mail, links, and QR codes.
    Organize PDFs More Efficiently
  • Manage Your Documents in One Place

    • View your PDF files across devices at any time.
    • Free 10G cloud storage space.
    • Can create folders and star, rename, move files, and so on
    Manage Your Documents in One Place

Why Choose HiPDF?

  • AI Read

    AI Read

    Chat with your PDFs intelligently. Summarize, rewrite, explain content, and ask any questions about the PDF, etc.

  • Intelligent Interaction

    Intelligent Interaction

    Quickly process your files with Al. Simply enter text commands to complete tasks such as PDF conversion and compression, transforming the way you interact with PDFs.

  • Chat History

    Chat History

    Be able to keep your PDF chat records for easy reference and review in the future. Preview files faster without the need for repeated uploads.

  • Multiple Languages

    Multiple Languages

    You can chat with PDFs in any language or translate text content into other languages.

  • Cited Pages

    Cited Pages

    Answers provide page links to the original file, which supports redirecting to the specified pages to verify the authenticity of answers.

  • Secure and Convenient

    Secure and Convenient

    Adopt the most advanced encryption methods to protect your files from leakage. Process files without downloading, saving you a lot of time!

Trusted by authorities and millions of users.

HiPDF is a member of the PDF Association and has received international authoritative certifications, like ISO 27001 and SSI SECURE.
As a simple but powerful tool, it quickly edits PDFs while keeping file secure, processing millions of files cumulatively.

  • ISO
  • SSL
  • PDFA
  • leader

Free PDF tools process PDF tasks online.