Sign a PDF online for free
Add your signature without printing, scanning, creating an account, or uploading the document.
Sign a PDF nowUse this when a form or agreement only needs your visible signature before you send the completed copy back.
Why sign a PDF in your browser?
Printing a document, signing the paper, and scanning it again adds equipment and extra steps to a task that may only take a minute. It can also make small text harder to read.
This tool keeps the original PDF pages intact and places your signature directly on the page. It is useful for routine documents that you review and return yourself.
Forms and acknowledgements
Complete permission forms, policy acknowledgements, applications, and other documents sent to you as PDFs.
Quotes and work orders
Approve a quote, estimate, change order, or service document without printing a copy first.
Sensitive documents
Work locally in the browser when you do not want a third-party PDF service to receive the file, filename, or signature image.
How to add a signature to a PDF
Open the PDF
Choose a PDF up to 25 MB from your computer, phone, or tablet. It opens locally in the page.
Place your signature
Draw, type, or upload a signature, then drag and resize it on any page that needs it.
Download the signed copy
Review the placement and save the finished PDF directly to your device with no watermark.
A visible signature is enough for many routine files
Use the free signer when you control the PDF and only need to place your own signature before returning or storing the file.
Need someone else to sign?
Stoatify e-signatures send signing requests, track delivery and completion, and keep the final tamper-evident PDF with its completion certificate.
See Stoatify e-signaturesFree PDF signer questions
Does my PDF get uploaded?
No. The PDF, signature image, and finished file stay in your browser. Stoatify receives anonymous page and funnel analytics when analytics are enabled, never the document or signature.
Is this PDF signer really free?
Yes. You can add signatures and download the finished PDF without an account, payment, usage credit, or watermark.
Can I sign more than one page?
Yes. Create a signature once, select any page, and add another copy wherever it is needed. You can move and resize each copy before downloading.
Can I use it on a phone or tablet?
Yes. The signer works in a modern mobile browser. Drawing a signature is often easiest with a finger or stylus, while larger documents are easier to review on a bigger screen.
Does this create an electronic signature audit trail?
No. This tool places a visible signature graphic into your PDF. Use Stoatify e-signatures when another person needs to sign and you need signer tracking, a completion certificate, and a tamper-evident final PDF.
More free document tools
Finish another document task in your browser. No account is required.