Skip to content
PDF SealBox logo

PDF SealBox

Stamp, number, watermark and split PDFs in your browser

PDF SealBox offers browser-based tools for adding visible stamps and cross-page seals, page numbers and watermarks, converting images to PDF, splitting PDFs, and exporting PDF pages as images. Choose pages and settings, preview the result, then download a separate file. The browser tools process files locally when supported, and the source file is not overwritten. A visible stamp is not a certificate-based digital signature or proof of signer identity.

Media

What people use PDF SealBox for

  • Add a visible review mark or seal to selected PDF pages
  • Place one seal across adjacent pages in a document run
  • Add page numbers or watermarks to selected pages
  • Combine scanned images into a multi-page PDF
  • Split a PDF or export selected pages as images

Platforms

  • Web

Questions about PDF SealBox

How do I combine several photos into one PDF?

Add the supported photos in the Images to PDF tool, arrange them in reading order, set the page options and export one document.

Can these tools edit existing PDF text?

No. The tools cover conversion, splitting and visible marks, but they do not rewrite paragraphs or change embedded fonts.

  • FormWiz logo

    FormWizFeatured: a paid launch

    Turn PDFs and Word docs into reusable fillable forms

    Productivityby @mattjlacher
  • Litak logo

    AI life-balance planner & habit tracker

    Productivityby @supportlitak
  • Aion logo

    Quit truly idle Mac apps without interrupting active work

    Productivityby @7caifei
  • Ovatly logo

    Your everyday digital toolkit: 250 free online tools.

    Productivityby @ovatlysupport
  • ZIPZAX logo

    475 free online tools for everyday digital work

    Productivityby @mojidhoss
  • PDF Dark Mode logo

    Read PDFs in dark mode

    Productivityby @pdfdarkmode