Sign a PDF in your browser
Add electronic signatures to PDF documents. Draw, type, or upload your signature.
Fast answer
Use Sign PDF when the job is to place one or more signatures on a PDF quickly without opening a broader editing workflow.
What this tool is best for
- Signing forms, approvals, and consent PDFs quickly.
- Placing a reusable signature image onto one or more pages.
- Adding signatures without uploading the document to a server.
Inputs and outputs
Inputs
- A PDF file.
- A drawn, typed, or uploaded signature.
Outputs
- A signed PDF file.
- Signature placement on the pages you choose.
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.
Practical guide for this tool
Use Sign PDF when the job is to place one or more signatures on a PDF quickly without opening a broader editing workflow.
What this tool does
- Places a visible signature on a PDF by drawing, typing, or using an uploaded signature image.
- Supports everyday approval and form workflows where a visible signature is accepted by the recipient.
- Does not automatically make a document legally sufficient or certificate-validated.
When to use it
- Signing forms, approvals, and consent PDFs quickly.
- Placing a reusable signature image onto one or more pages.
- Adding signatures without uploading the document to a server.
Practical examples
- Sign a rental form: start with rental-form.pdf and check that the output matches rental-form-signed.pdf.
- Approve an internal memo: start with approval.pdf and check that the output matches approval-signed.pdf.
Privacy and file handling
- Use this tool only on documents you own or have permission to process.
- OpenToolsKit is designed around browser-side processing where applicable, but you should still inspect the downloaded result before sharing it.
- Keep the original file until the output has been opened and verified.
Common mistakes to avoid
- Signing before filling required form fields.
- Placing the signature over important text or outside the expected signing box.
- Assuming every recipient accepts a visible signature instead of a certificate-based signature.
Troubleshooting
- If the signature is hard to read, recreate it with stronger contrast or place it on a clearer part of the page.
- If a recipient requires certificate validation, use a digital signature workflow rather than a visible signature only.
Responsible use
- This is not legal advice. Confirm that a visible signature is acceptable for your specific document and recipient.
- Do not sign blank, incomplete, or unauthorized documents.
How to Use
Upload Your PDF
Drag and drop your PDF file or click to select the document you need to sign.
Create Your Signature
Draw your signature with mouse or touch, type your name to generate a signature, or upload a signature image.
Place and Adjust
Click on the document to place your signature, then drag to position and resize as needed.
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.
Limitations and edge cases
- This is for visible signatures, not certificate-based digital signing. Use Digital Sign PDF for cryptographic signing.
- For broader comments or page edits, use Edit PDF instead.
Examples
Sign a rental form
Input
rental-form.pdf
Output
rental-form-signed.pdf
Approve an internal memo
Input
approval.pdf
Output
approval-signed.pdf
Task pathways
Where this fits in pdf workflows
Edit and annotate PDF tools hub
Choose the closest task in this PDF category before switching tools.
Go to Edit and annotate PDF tools hubBuild a multi-step PDF workflow
Chain adjacent PDF actions when one tool is only part of the job.
Go to Build a multi-step PDF workflowBrowse all browser PDF tools
Scan every live PDF utility and route to the right next action.
Go to Browse all browser PDF toolsFrequently 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.
Is this the same as a certificate-based digital signature?
No. Sign PDF is for visible signatures. Use Digital Sign PDF when a certificate-backed signature is required, and confirm requirements with the recipient.
What should I check before sharing output from Sign PDF?
Open the downloaded file and verify page order, readability, visible edits, and any privacy-sensitive details before sending or filing it.
Does Sign PDF upload my document to OpenToolsKit servers?
OpenToolsKit is designed around browser-side processing where applicable. Some browser features, third-party links, or unsupported file types can have different boundaries, so review the privacy page for details.