Sign Documents Online with Electronic Signature For Free

Sign PDF Online — Free Electronic Signature for PDFs

Add a legally binding electronic signature to any PDF in seconds, right in your browser — draw it, type it, or upload an image of your handwritten signature. There's no software to install, no Adobe Acrobat license, and no watermark on your finished document. Sign your own PDF or send it to others for signature, and every signed file comes with a court-admissible audit trail recording who signed, when, and from which IP address. pdfFiller is trusted by 64 million users, rated 4.6★ on G2, 4.5★ on Capterra, and 4.4★ on TrustRadius from 2,500+ verified reviews, and works in any browser on Windows, Mac, iPhone, iPad, and Android — no account needed to start signing.

How to sign a PDF online

The whole process takes under a minute:

• Drag your PDF into the upload area at the top of this page, or click 'Select from device'.
• Click 'Sign' in the toolbar, then choose how to create your signature: draw with a mouse or finger, type your name in a signature font, or upload a photo of your handwritten signature.
• Place the signature where it belongs and resize it to fit the signature line.
• Add the date, your initials, or text fields if the document needs them.
• Click 'Done', then download the signed PDF, email it, or save it to your account or cloud storage.

Three ways to create your signature

pdfFiller gives you the same three signing methods the most-used e-signature tools offer, so you can match the look you want. Draw your signature with a mouse, trackpad, or finger on a touchscreen for the closest match to signing on paper. Type your name and pick a handwriting-style font for the fastest option. Or upload a photo or scan of your real handwritten signature for an exact reproduction you can reuse on every document. Once created, your signature is saved to your account, so the next signature takes one click. You can also store initials and custom stamps — 'Approved', 'Paid', a date stamp — for the marks you apply most often.

Are electronically signed PDFs legally binding?

Yes. Electronic signatures created with pdfFiller are legally binding under the U.S. ESIGN Act and the Uniform Electronic Transactions Act (UETA), and they meet eIDAS requirements for electronic signatures in the EU and UK. In practice, that means a PDF you sign in pdfFiller carries the same legal weight as a pen-and-paper signature for the vast majority of business and personal documents — contracts, agreements, consent forms, offer letters, and the like. What makes an e-signature hold up is not the image itself but the evidence around it, which is why every document signed through pdfFiller includes a court-admissible audit trail: a tamper-evident record of who signed, the email they used, the date and time, and the IP address. If a signature is ever questioned, that trail is the proof. A small number of document types — certain wills, court orders, and notarized instruments — may still require a handwritten signature or notarization under local law; when in doubt, check the requirements for your specific document.

Sign it yourself or send it to others to sign

Two different jobs hide behind 'sign a PDF', and pdfFiller does both. When you need to sign a document someone sent you, the steps above get you a signed PDF in under a minute. When you need other people to sign — a client on a contract, a new hire on an offer letter, two parties on an agreement — you can send the document for signature instead: add each recipient, drop signature and date fields where they belong, set a signing order if the document must be signed in sequence, and send. Recipients get a secure link and sign from any device with no account and no app required. You see real-time status as each person signs, automated reminders chase anyone who stalls, and the fully executed PDF — with its complete audit trail — lands back in your account the moment the last signature is in.

What you can sign — and what you can sign it on

Upload a PDF up to 100 MB, or bring a Word, PowerPoint, image, or text file (DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, TXT) up to 25 MB and pdfFiller converts it to PDF so you can sign it the same way. Because the signer runs in the cloud, it behaves identically across operating systems: use Chrome, Safari, Firefox, or Edge on Mac, Windows, Linux, or ChromeOS, or sign from mobile Safari or Chrome on iPhone, iPad, and Android — or the free pdfFiller apps. Start a signature on your laptop and finish it on your phone; your documents sync automatically, so nothing has to be re-uploaded.

Industries that sign with pdfFiller

Teams in document-heavy and regulated fields rely on pdfFiller because signing sits inside a compliant, end-to-end workflow rather than a standalone tool:

• Real estate — listing agreements, leases, disclosures, and purchase contracts signed on a phone, no app needed.
• Legal — engagement letters, settlement agreements, and client contracts signed under an audit trail that meets legal-industry requirements.
• Human resources — offer letters, NDAs, and onboarding packets sent for signature and returned as clean, executed PDFs without printing.
• Sales — proposals, order forms, and contracts closed faster with in-sequence signing and automatic reminders.
• Healthcare — consent forms and patient paperwork signed in a HIPAA-compliant workflow.

Fill out the form, then sign it

Many documents that need a signature also need to be filled in first — a contract with blanks for names and dates, an application with checkboxes, a tax form with fields. pdfFiller handles both in one pass. Type directly into the document to complete text fields, check boxes, insert today's date, and add your initials where required, then drop your signature on the signature line — all before you click Done. There's no need to print the form, fill it by hand, sign it, and scan it back in. If you send the document to someone else, you can place fillable fields for them too, so they complete and sign in the same step from any device. The finished file comes back fully filled and signed, ready to file or forward.

Security and compliance for signed documents

Every document is protected with 256-bit AES encryption in transit and at rest. pdfFiller is independently certified for SOC 2 Type II, and meets HIPAA, GDPR, CCPA, and PCI DSS requirements — the standards used by hospitals, banks, and EU companies — so the signer is suitable for medical consent forms, financial agreements, and legal contracts, not just casual paperwork. Documents stay in your private account; they aren't shared with third parties or used to train AI models. For sensitive files you can add a password, require additional signer authentication, and set a document expiration date before sending.

Manage and store signed PDFs

Signing is usually the start of a document's life, not the end of it. After a PDF is signed, it's saved to your pdfFiller account, where you can organize files into folders, find any document with search, and pull up a signed copy from any device. Download the executed PDF, email it as an attachment, generate a secure share link, or save it straight to Google Drive, Dropbox, OneDrive, or Box so the signed version lives alongside the originals. Because the signer is part of a full PDF workspace, you can also keep working on the same file without re-uploading — redact a sensitive figure, add page numbers to a long contract, merge it with related documents, or convert it to Word.

Why sign PDFs with pdfFiller

Free, browser-based PDF signers are easy to find — but most stop at a single signature on a single file. pdfFiller covers the whole job: create a signature three ways, sign your own documents, send them to others for legally binding signature with a court-admissible audit trail, then manage, store, edit, and share the signed file from one secure workspace. There's nothing to install, it runs on any device, finished documents carry no watermark, and the same encryption and compliance that protect a hospital's records protect yours. To sign your PDF online right now, drop your file into the upload area at the top of this page. No install, no Acrobat license, no watermark.