Someone sends you a PDF that needs your signature. You open it, realize you cannot sign it without printing, and start looking for a tool that does not require an account or a credit card.
This guide shows how to sign any PDF using PainlessPDF, a free browser-based editor. No downloads, no sign-ups, no watermarks.
Common reasons to sign a PDF
- Signing a contract, lease, or agreement
- Approving an invoice or purchase order
- Completing a job application or onboarding form
- Adding your initials to each page of a legal document
- Signing a permission slip, consent form, or school paperwork
How to sign a PDF
1. Open your PDF
Go to the PainlessPDF editor and drag your file onto the page, or click to browse. The document opens instantly in your browser.
2. Select the signature tool
Click the Sign button in the toolbar, or press S on your keyboard. A signature creation dialog opens automatically.
3. Create your signature
You have three ways to create a signature:
- Type - Enter your name and pick from several handwriting-style fonts. Choose a color that fits the document.
- Draw - Use your mouse or trackpad to write your signature freehand. Adjust the stroke width and color to your liking.
- Upload - Drag in an image of your existing signature (PNG or JPG).
4. Place your signature
Click Add and your signature appears in the center of the current page. Drag it to the signature line or wherever it needs to go.
5. Resize if needed
Drag the corner handles to make the signature larger or smaller. The aspect ratio stays locked so it does not stretch.
6. Confirm or adjust
Click the green checkmark to confirm placement, or drag the grip handle to reposition. You can delete and re-add the signature at any time.
7. Download your PDF
Click Download in the top-right corner. Your signature is embedded directly in the PDF as an image layer.
Tips for signing PDFs
- Use a dark color. Black or dark blue looks most natural on printed documents.
- Draw slowly. The signature pad captures every movement, so a slower stroke produces a cleaner result.
- Zoom in first to place your signature precisely on the signature line.
- Resize before positioning. Get the size right first, then drag it into place for fewer adjustments.
Is this a legally binding signature?
For most everyday documents, a typed or drawn signature on a PDF is accepted. Rental agreements, freelance contracts, internal approvals, and school forms typically do not require a certificate-based digital signature. If your document requires a qualified electronic signature under regulations like eIDAS or ESIGN, you will need a dedicated e-signature service with identity verification.
Signing scanned PDFs
Scanned PDFs are just images, but that does not matter for signatures. Your signature is placed as a layer on top of the page, so it works the same way on scanned documents as it does on native PDFs.
Why not print, sign, and scan?
Printing a document to sign it by hand and scanning it back wastes time and paper. The result is a lower-quality file with a larger size. Signing directly in the browser skips all of that and produces a cleaner output.
Your files stay on your device. PainlessPDF processes everything locally in the browser, so nothing is uploaded to a server.