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Sign PDF

Add electronic signatures to PDF documents. Draw, type, or upload your signature.

Upload PDF File

Drag and drop a PDF file to sign.

About This Tool

Sign PDF allows you to add electronic signatures to your PDF documents quickly and securely. Create your signature by drawing, typing, or uploading an image, then place it anywhere on your document.

You can add multiple signatures to a single document, resize and position them precisely, and save your signature for future use. The tool is perfect for contracts, agreements, forms, and any document requiring your signature.

All signing happens locally in your browser, ensuring your documents and signature remain private.

How to Use

  1. Upload Your PDF

    Drag and drop your PDF file or click to select the document you need to sign.

  2. Create Your Signature

    Draw your signature with mouse or touch, type your name to generate a signature, or upload a signature image.

  3. Place and Adjust

    Click on the document to place your signature, then drag to position and resize as needed.

  4. Save and Download

    Click Save to apply your signature and download the signed PDF.

Use Cases

Contract Signing

Sign contracts and agreements electronically without printing and scanning.

Form Completion

Add your signature to application forms, consent forms, and official documents.

Approval Workflows

Sign off on documents as part of review and approval processes.

Practical guide

Why choose local processing?

  • Forms and agreements can contain contracts, invoices, identity details, or internal business information, so keeping processing in the browser reduces exposure.
  • The website tool is free to use with no usage limits and does not require sign-in.
  • Local processing also keeps iteration fast: adjust options, preview the result, and export a signed PDF without waiting for an upload queue.

Best files for this tool

  • Best for PDF files that open correctly in a modern browser and are not intentionally damaged or restricted.
  • Works well for everyday business, school, legal, finance, and personal documents where you need a signed PDF.
  • For very large files, close unused tabs and process one batch at a time so the browser has enough memory.

Common limitations

  • Encrypted or permission-restricted PDFs may need to be unlocked before processing.
  • Scanned pages, unusual fonts, complex layers, and damaged files can reduce accuracy or processing speed.
  • Browser memory and device performance matter more for local tools than for upload-based services.

Local processing vs upload-based tools

  • Local tools keep routine website processing on your device, while upload-based tools send files to a remote server.
  • Upload-based services can move heavy work off your computer, but they add transfer time and require trusting a server with your files.
  • Use the API when you intentionally need server-side automation; use the website when you want private manual processing.

What to do if processing fails

  • Try a smaller file, a shorter page range, or one file at a time if the browser runs out of memory.
  • If a PDF is encrypted, damaged, or restricted, unlock or repair it first and then retry the workflow.
  • If the output looks wrong, check whether the source file uses scans, complex transparency, form fields, or unsupported embedded objects.

API automation

Use API docs to plan automated PDF workflows. If this exact website workflow is not exposed as an endpoint yet, you can still use available PDF API tools and Credits for supported operations.

Frequently Asked Questions

Is an electronic signature legally binding?

Electronic signatures are legally recognized in most countries. However, some documents may require specific types of digital signatures. Check your local regulations.

Can I save my signature for future use?

Yes, you can save your signature to your browser's local storage for quick access when signing future documents.

Can I add multiple signatures to one document?

Yes, you can add as many signatures as needed, positioning each one independently on any page.