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Free PDF tools online

Organize, edit, sign and optimize PDF documents. Every tool works on your device — your PDFs are never uploaded.

Organize

Edit & sign

  • Sign PDF

    Draw, type or upload a signature and place it on a PDF.

    Visual signature
  • Annotate PDF

    Add text, boxes, highlights and lines to PDF pages.

    Annotations
  • Add Page Numbers

    Number pages with your choice of position and format.

  • Watermark PDF

    Stamp text such as CONFIDENTIAL or DRAFT on pages.

  • Crop PDF

    Trim page margins by adjusting the visible crop box.

  • Resize PDF

    Fit pages to A4, Letter, Legal or a custom size.

  • Flatten PDF

    Turn fillable form fields into fixed page content.

  • PDF Hyperlinks

    Add clickable web or page links, or remove existing ones.

  • PDF Background

    Put a colour or image behind your pages.

Optimize

  • Compress PDF

    Reduce PDF file size with a quality you choose.

  • PDF Metadata

    View, edit or clear title, author and other properties.

  • PDF to Grayscale

    Make a PDF black-and-white-ish to save ink and space.

    Image-based

Forms

Layout & numbering

Inspect & secure

  • PDF Size Analysis

    See which images, fonts and streams take up the space.

  • PDF Privacy Inspection

    Check metadata, comments, links, forms, scripts and revisions.

  • Extract PDF Attachments

    List and save files embedded inside a PDF — never opened.

  • Compare PDFs

    See differences page by page: side by side, overlay, pixels or text.

  • Unlock PDF

    Remove a PDF's password and restrictions — enter the password you know.

    No upload
  • Protect PDF

    Add a password and permissions to a PDF with AES-256 encryption.

    AES-256
  • Redact PDF

    Burn opaque boxes into pages and rebuild a fresh, image-only PDF.

    Rebuilds as images
  • Sanitized PDF Copy

    Rebuild a PDF from page pictures with no original objects.

    Rebuilds as images
  • Search in PDF

    Find words across all pages and see them highlighted.

Frequently asked questions

How do I combine PDF files online for free?

Choose Merge PDF, add your documents, arrange their order and save one combined file. No account or file upload is needed.

Are these PDF tools free?

Yes. All PDF tools are free to use with no sign-up, watermark or daily limit.

Do the PDF tools keep text selectable?

Merge, split, organize, rotate, delete, extract, crop, page numbers, watermark and sign all keep the original page content, so text stays selectable. Compress PDF rebuilds pages as images to save space, which you confirm before compressing.

Can I edit password-protected PDFs?

Encrypted PDFs need to be unlocked first with the password in software you're authorized to use. The tools will tell you when a file is encrypted.