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PDF/PDF Sign

PDF Sign

Draw, type, or upload your signature and place it on any page — 100% browser-based

100% LOCALDraw signatureType & uploadDrag to place100% local
Saved Signatures· Auto-save on
The CalculatorPage 1
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Drop a PDF file here or click to upload
All processing happens in your browser — your file never leaves your device.
Data Source & Legal Disclaimer
Effective: 2026Last updated: 2 months agoUpdate: Manual review
Sources: pdf-lib · pdfjs-dist

This tool adds a visual signature image to your PDF. It does NOT apply a cryptographic/digital certificate signature. For legally binding e-signatures, use a service with certificate authority. All processing happens in your browser — your file never leaves your device.

See all data sources & update policy →
How it worksPage 2

Visual signature vs. digital signature — illustrated

Signing a PDF can mean two different things. This tool does the visual kind: your drawn, typed, or uploaded signature becomes an image, is embedded as an Image XObject, and is drawn onto the page content stream at the spot you clicked — readers see it exactly like a scanned signature. A true digital signature goes further: it hashes the document's byte range, signs that digest with a private key, and stores the result in a /Sig fieldso a viewer can cryptographically verify that the file was not altered after signing.

Embed a signature image — and what a /Sig field adds
VISUAL SIGNATURE — THIS TOOLSignature imagedrawn · typed · uploadedImage XObjectembedded with pdf-libas an image object/Sig1Page content streamq/Sig1 DoQCRYPTOGRAPHIC SIGNATURE — /Sig FIELDPDF bytesByteRange[0 … 81920]hashSHA-256one-way hash→ digestsignRSA signprivate keyPKCS#1Signature dict/Contents/ByteRangein /Sig fieldA viewer recomputes the digest over the byte range and verifies it against the public key.

The top path is what this tool performs: a signature image embedded and drawn onto the page. The bottom path is what a certificate-based e-signature service adds — a hash, a digest, and an RSA signature stored in a /Sig field for tamper-evident verification.

Signing a supplier quotation

You need to approve a quotation and return it the same day. This tool places a visual signature; the final step notes what a certificate-based digital signature would add.

  1. Draw your signature:The drawing canvas stores your strokes as a 300×120 PNG data URL
  2. Place it on the page:Click the last page to set the (x, y) anchor; the image renders at about 180 px wide
  3. Embed and draw:pdf-lib embeds the PNG as an Image XObject and draws it into the page content stream at the anchor
  4. Compare with a digital signature:A /Sig field would instead store an RSA-signed digest of the byte range for viewers to verify
FAQ & detailsPage 3

To sign a PDF: draw, type, or upload your signature, place it on the document, and download — all in your browser, your contract never leaves your device.

FreeToolHub PDF Sign is a free browser-based tool that adds digital signatures to PDF documents, no signup, no upload.

About this tool

What is this tool?

Sign contracts and forms in your browser. Draw, type or upload a signature. Free, private.

Draw signatureType & uploadDrag to place100% local

What Is the PDF Signer?

This tool adds signatures to PDFs directly in your browser through three input methods: draw the signature with mouse or touchscreen, type a name rendered in handwriting-style fonts, or upload a signature image scanned or photographed earlier. Position and scale the signature on any page, add date and text fields where forms demand them, and download the signed document. There is no account, no upload, and no per-document fee — which makes it the quick path for the everyday majority of signatures: consents, internal approvals, intake forms, and personal paperwork.

Who Should Use This Tool?

Anyone facing a form that must go back signed today: school enrollment, medical intake, HR onboarding packets, permission slips. Remote workers sign internal approvals and expense acknowledgments without a paid e-sign platform. Freelancers countersign lightweight client agreements. Travelers handle visa and booking confirmations that arrive as PDFs needing a signature field filled. The local-only pipeline suits sensitive documents — tax forms, medical paperwork — where uploading to a third-party signer service is the part you would rather skip.

How Does It Work?

(1) Load the PDF and navigate to the page needing the signature. (2) Create the signature — draw it, type it in a handwriting font, or upload an image; it saves for reuse within the session. (3) Drag the signature into position, scale it to fit the signature line, and add date or text fields if the form requires them. (4) Download the signed PDF. The signature embeds into the document as page content, visible in any PDF reader, with the original file's other pages untouched.

Is a Browser Signature Legally Valid?

In the US, the ESIGN Act and UETA make electronic signatures legally valid for most transactions — the signature's validity comes from intent and context, not from any particular technology, so a drawn signature on a downloaded PDF is enforceable for the broad run of everyday documents. The exceptions worth knowing: documents that still demand wet ink or notarization by statute — wills in most states, some trusts, certain court filings, and property deeds in many jurisdictions — plus anything your counterparty's process explicitly requires a certified platform for. Certified e-sign services add tamper-evident audit trails, identity verification, and certificate-based sealing, which matter for high-value contracts and regulated industries. Practical middle path used widely: sign here for routine paperwork, and when a document needs third-party verifiable proof of signing, route it through a certified platform for that transaction.

Typed, Drawn, and Image Signatures — Which Counts Legally

In most jurisdictions an electronic signature is valid when it shows intent to sign — the US ESIGN Act and EU eIDAS both accept typed names, drawn signatures, and signature images on contracts. What separates a enforceable signature from decoration is the surrounding evidence: who signed, from where, and agreement to the terms. This tool covers the visual layer — draw with a mouse or finger, type in a handwriting-style font, or upload a photo of your ink signature — and places it on the document locally, so the signed contract never uploads to a third party. What it does not add is cryptographic certification: a certificate-based signature (the kind Acrobat validates with a green check) requires a certificate authority identity. For employment contracts, NDAs, and most business agreements the visual signature is standard practice; for transactions requiring qualified signatures, the relevant law will say so explicitly.

Frequently Asked Questions

Is a signature drawn in the browser legally binding?

Generally yes — ESIGN (US) and eIDAS (EU) accept electronic signatures showing clear intent, and a drawn or typed signature on an agreed document qualifies. High-stakes transactions (real estate, some government filings) may require certified digital signatures; check the counterparty's requirements.

Is my signed document uploaded anywhere?

No. The signature is drawn or applied and the PDF is finalized entirely in your browser — the document and the signature image never leave your device, which is often exactly why people choose to sign locally rather than through an account-based service.

How do I sign a PDF electronically?

Load the PDF, pick a page, and add your signature three ways: draw it with a mouse or finger, type your name in a signature font, or place a saved signature image. Position it anywhere on the page, then export — the signature is drawn into the document and visible in every PDF reader. Most everyday signing (leases, HR forms, permission slips) is exactly this kind of electronic signature.

Is an electronic signature legally binding?

In most jurisdictions, yes — e-signature laws (ESIGN in the US, eIDAS in the EU) give a drawn or typed signature the same weight as ink when both parties intent to sign. Some documents still require witnesses, notaries, or qualified digital certificates; for those, this tool's output is a convenience copy, not the binding instrument. When in doubt, ask the counterparty what form they accept.

Can I add more than one signature or initials to a PDF?

Yes — place signatures on any pages you need: sign page 1, initial every page after, or leave space for a counterparty. Each placement is independent, so mixed initials-plus-full-signature documents (the common contract pattern) take under a minute.

Does signing upload my document or signature anywhere?

No. Signing runs entirely in your browser — the document and your signature stay on your device, and the signed copy is generated locally. Your handwritten signature is biometric data; it should never have to be uploaded to a random server just to sign a lease.

How do I add a signature to a PDF without printing?

Draw your signature with a mouse or trackpad, type your name in a cursive font, or upload a signature image. Position it anywhere on the document, resize as needed, and export the signed PDF. The entire process takes under 30 seconds with no printing or scanning.

Is a browser-added signature legally valid?

A visible signature image placed on a PDF satisfies most business agreements, vendor contracts, and HR forms under the US ESIGN Act and EU eIDAS regulation for standard electronic signatures. For qualified electronic signatures (QES) requiring certificate authority verification, you would need a dedicated e-signature platform.

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