CookPDF
Sign a PDF directly on your device

Add a visible signature to a PDF document online

Add a typed, drawn or uploaded signature to your PDF

Select or drop a PDF file

Select PDF file

PDF files only

Max 100 MB

🔒 Processed on your device · Never uploaded to a server · Free

  • Easy to use
  • Secure
  • Preserve quality

Processed on your device

Files are not uploaded to CookPDF servers

The main operation runs in the browser on your device.

Session can be restored

The browser can save a cache and local draft to continue your latest work.

Check before using

Review the resulting file, especially for documents that need to be signed, printed, or sent officially.

How to sign a pdf

Follow three steps and check the result before downloading.

  1. Open the document to sign

    Choose the PDF and identify the page with the signature spot.

  2. Create and place the signature

    Draw, type, or choose a signature image, then adjust the size.

  3. Review and download

    Confirm the position and related content, then save the result file.

Highlights

Useful capabilities for the right task on PDF documents.

Several ways to create a signature

Draw directly, type your name, or use an existing signature image.

Place it visually

Drag the signature to the right box and adjust the size.

Keep the original separate

Download a new copy after signing for easy cross-checking.

Processed on your device

The main operations run in the browser and files are not uploaded to CookPDF.

Use cases

Common situations well suited to this tool.

  • Confirm a form

    Place a visible signature at the requested spot.

  • Sign internal documents

    Add a confirmation mark before moving to the next processing step.

  • Prepare a document to send back

    Sign and check all information fields before downloading.

Ready to sign your pdf?

Choose your PDF files to get started and check the result right in your browser.

Sign PDF

Add a visible signature to your PDF document online

Create, draw or insert a signature image at the needed spot on your PDF, then review the document before downloading.

When is this tool a good fit?

  • Confirming forms: Place a visible signature at the required position.
  • Signing internal documents: Add a confirmation mark before moving to the next processing step.
  • Preparing a document to return: Sign and check every field before downloading.

Recommended workflow

Open the file, set up the task on the preview, check each affected page, and only then download. Keep the original so you can compare or start over when needed.

Limitations to know

A signature added with this tool is a visible mark on the document; it is not automatically a certified digital signature or legally valid in every case. Check the recipient's requirements.

Data and session

The main operations run on your device and files are not uploaded to CookPDF servers. Your browser may store a local cache or draft to restore the session; you can clear the session in the interface or clear website data in your browser settings.

Frequently asked questions

Answers about capabilities, limits, and how files are handled.

Is this a digital signature?
Not by default. The tool adds a visible signature; a digital signature uses a certificate and a separate authentication process.
Is the signature legally valid?
That depends on the type of transaction, agreement, and applicable regulations. Ask the recipient which form they accept.
Can I use a signature image?
Yes. You can select a signature image if the interface offers that option, then adjust its size and position.
What should I check before sending?
Verify the correct signer, position, date, document content and the recipient's requirements.

Ready to sign your pdf?

Choose your PDF files to get started and check the result right in your browser.

Sign PDF

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