Sign PDF

Make it official.

Without the notary.

Drop your PDF here

or tap to browse  ·  max 50 MB

Draw your signature above, then click the document to place it

No upload
Works offline
No idea what's in your file

Need to sign stacks of documents? The offline bundle handles batch signing with no size limit. $99 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Drop
Drag your PDF onto the page. It stays on your device.
02
Sign
Draw your signature, pick an ink colour, and click anywhere on any page to place it. Uses pdf-lib to embed the signature directly.
03
Download
Save your signed PDF. Nothing was ever uploaded.
// Why this is different

Your signature never leaves your machine.

Most e-signature tools upload your document and your handwriting to a remote server. fwip embeds your signature entirely in your browser using pdf-lib.

fwip works differently. The signing engine runs entirely in your browser. Your PDF is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

// How fwip compares

fwip vs the rest.

fwipSmallpdfAdobe AcrobatiLovePDF
Upload requiredNoYesYesYes
Account requiredNoYesYesFree tier
Price$15 / tool$108/yr$240/yr$84/yr
Files leave deviceNeverAlwaysAlwaysAlways
Works offlineYesNoDesktop appNo
Batch processingOffline bundlePaid onlyYesPaid only
// Questions

Frequently asked.

How do I sign a PDF without uploading it?▾
Drop your PDF onto fwip, draw your signature on the pad, and click the document to place it. The entire process runs in your browser — your file and signature never leave your device.
Is a PDF signature legally binding?▾
In many jurisdictions a drawn e-signature on a PDF satisfies basic electronic signature requirements. fwip embeds the image directly into the PDF using pdf-lib. For contracts requiring advanced e-signatures or notarisation, consult a lawyer.
Can I add multiple signatures to different pages?▾
Yes. After drawing your signature in fwip, click anywhere on any page to place it. You can navigate between pages and add as many signatures as needed before saving.
Can I sign a PDF on my phone?▾
fwip works in any modern mobile browser. Drop or browse for your PDF, draw your signature with your finger, tap to place, and save. No app install required and nothing is uploaded.
What file size limit does the PDF signer have?▾
The browser version handles PDFs up to 50 MB. For larger files or batch signing, the offline bundle has no size limit.
// Related tools

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Guide: How to sign a PDF without printing →

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