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Edit PDFs with Stamps, Seals, Signatures, or Electronic Signature Workflows ｜ Stampdy.com

Edit Your PDFs with Stamps, Seals, or Signatures — No Downloads Needed

StampDy.com makes it easy to edit PDF documents online. Whether you're adding a signature to a contract, placing an official seal on a form, or stamping your logo on a document — our free online PDF editor helps you do it in just a few clicks.

You don’t need design skills. You don’t need software. Just upload, edit, and download — all right in your browser.

Free mode

Free Mode

No login required

Open a PDF, add stamps or signatures, adjust placement, and export the edited file.

Upload and edit a PDFAdd stamps and signaturesDrag, resize, rotate, deleteExport the edited PDF
Open Free Mode

Electronic signature workflow

Business Mode

Login required

Includes every Free Mode editing tool, plus electronic signature requests, automatic reminders, cloud drafts, status tracking, and signed PDF history.

Send signature invitations

Send signing links and reminder emails to recipients.

Digital signature flow

Signers open the link, create a digital signature, and finish.

Smart contract management

Keep documents, drafts, signed versions, and request history together.

Track status and summary

View pending, viewed, signed, and reminder activity.

Open Business Mode
Electronic signature requests. Send PDF signing links, collect recipient signatures, and track each request from one workspace.
Signature maker and generator. Draw, type, or upload a digital signature before placing it on your PDF.
Smart contract management. Save cloud drafts, send reminders, review signer status, and download signed PDF summaries.

How to Add Stamps or Signatures to PDFs

Using Stampdy’s PDF tool is simple:

  • Upload your PDF file directly on the site
  • Choose a stamp or signature — or upload your own
  • Drag it into place, resize or rotate it as needed
  • Download the edited PDF

No registration required. No watermarks. No nonsense.

Why Thousands Use Stampdy’s Online PDF Editor

We designed Stampdy to solve the everyday problems people face when editing PDF files — especially when adding custom stamps, seals, or digital signatures. Here's what makes it stand out:

  • ✅ No Installations, Ever

    Our tool runs entirely in your browser — no apps, no extensions, no downloads.

  • Full Privacy & Security

    Your PDFs are never uploaded to a server. Editing happens locally on your device. Nothing is saved, nothing is tracked.

  • Designed for Real Work

    From small business owners and lawyers to freelancers and government staff, Stampdy helps users handle everything from invoices to official documents.

  • Works on Any Device

    Mac, Windows, Android, iOS — it doesn’t matter. If you can open a browser, you can use Stampdy.

  • Clean Interface, Zero Learning Curve

    You don’t need to watch tutorials. The process is fast, clear, and frustration-free.