Sign PDF Online Free

You receive a supplier contract at 4pm that needs to be returned by end of business. The old workflow: print it, sign it, scan it, email it back. That assumes you have a printer, a scanner, and time. The new workflow: open PDFKits Sign PDF, draw your signature, place it, download the signed PDF, send it — three minutes, no hardware required.

Electronic signatures are legally valid in most jurisdictions: the EU eIDAS regulation covers Europe, the US ESIGN Act covers federal transactions, and similar laws apply in the UK, Canada, Australia, and many others. PDFKits Sign PDF lets you draw, type, or upload an image of your signature, position it precisely on any page, and download a signed PDF instantly — free, without creating an account, and without your document leaving your browser.

How It Works

Step 1 — Upload your document

Drag your PDF into the tool. All pages render as a preview so you can navigate directly to the signature line. For a 10-page contract, jump to page 10 where the signature block is without scrolling through everything else. The document is loaded into browser memory — nothing is sent to any server at this stage or at any later stage.

Step 2 — Create your signature

Choose from three methods. Draw: use your mouse or trackpad to write your signature on the signature pad — on a touch screen, use your finger or stylus for a more natural result. Type: enter your name and choose from several handwriting-style fonts. Upload: import a transparent PNG of an existing signature image, such as a scan of your handwritten signature with the background removed. The signature can be resized and repositioned precisely on the page.

Step 3 — Place, date, and download

Drag your signature to the correct position on the page. Add a date stamp if required — many signature blocks include a date field next to the signature line. You can add initials on additional pages if the contract requires them. Click Download Signed PDF. The file is built in your browser and downloads directly to your device. The signing process is complete without anything being uploaded anywhere.

Use Cases

Freelancers and contractors

A freelance web developer receives client contracts weekly. PDFKits lets her sign each contract in under two minutes from any device — including her iPad while traveling — without a DocuSign subscription at $25/month or Adobe Sign at $16.99/month per user.

Remote employees

A remote employee needs to sign an NDA before starting a new project. HR emails the PDF on a Thursday afternoon. He signs it digitally via PDFKits and returns it within five minutes — no printer, no scan, no delay.

Landlords and tenants

A landlord sends a lease renewal to a tenant in another city. The tenant signs the PDF via PDFKits, returns it as a signed PDF, and the landlord counter-signs their copy — the whole exchange happens in a single afternoon without anyone needing to travel or use courier services.

Legal and HR

An HR manager collects signed acknowledgments from 50 remote employees for a new policy document. Each employee receives the PDF, signs via PDFKits, and returns it — no wet signature, no scanning, no printing. The signed PDFs archive alongside the original policy record.

Small business purchasing

A small business owner signs supplier agreements, purchase orders, and service contracts multiple times a week. Using PDFKits avoids the $25–$30/month cost of dedicated e-signature platforms for a volume that does not justify the expense.

PDFKits vs. Alternatives

DocuSign charges $25/month for a Solo plan. Adobe Sign starts at $16.99/month. HelloSign (now Dropbox Sign) charges $20/month. These platforms are built for workflows involving multiple signers, automated reminders, and audit trails — valuable for legal teams handling hundreds of contracts, but overkill for someone who signs a few documents per month.

FeaturePDFKitsDocuSignAdobe SignHelloSign
CostFree, always$25/month$16.99/month$20/month
Files stay on your deviceYesNo — cloudNo — cloudNo — cloud
No login requiredYesNoNoNo
Multi-signer workflowNoYesYesYes
Audit trailNoYesYesYes

For single-signer use — the most common scenario — PDFKits is free and requires no account. For multi-party contracts requiring an audit trail, a dedicated e-signature platform is the appropriate choice.

Frequently Asked Questions

How do I sign a PDF online for free?

Upload your PDF to PDFKits Sign PDF, draw or type your signature, drag it to the signature line, and click Download. The signed PDF is ready to send in under two minutes.

Is an electronic signature on PDFKits legally valid?

Electronic signatures are legally valid in most countries under eIDAS (EU), ESIGN Act (US), Electronic Communications Act (UK), and similar laws. Check your local regulations for specific contract types.

Are my documents uploaded to a server?

No. Signing happens entirely in your browser. Your document and signature are never transmitted to PDFKits or any third party.

Do I need to create an account?

No. PDFKits Sign PDF requires no account, registration, or login. Open the tool, sign, download — that's it.

Can I sign multiple pages or add initials?

Yes. Place your signature on any page and add initials on additional pages as required. Resize and reposition signature elements independently on each page.

What format does my signature image need to be in for upload?

PNG with a transparent background works best. A JPG with a white background will show a white box around your signature. You can remove image backgrounds using PDFKits Remove Background tool.

Does it work on iPhone, Android, and tablets?

Yes. On a touchscreen device, drawing your signature with your finger or stylus produces a more natural result than using a mouse. The tool works in any modern mobile browser.

Can I sign a password-protected PDF?

No. Unlock the PDF using PDFKits Unlock PDF first, then sign the unlocked version.

Is a PDF signed with PDFKits tamper-evident?

No. PDFKits adds a visual signature image but does not apply a cryptographic digital signature certificate. For tamper-evident signing with a certificate, use a dedicated service like DocuSign or Adobe Sign.

Can multiple people sign the same PDF using PDFKits?

Each person signs their own copy sequentially — one person signs, sends the PDF, the next person uploads and signs. PDFKits does not provide a multi-signer workflow with automatic routing.