Free online PDF signature tool. Type, draw or upload your signature, place it on any page of any PDF, and download the signed file instantly. No account. No watermark. No installation.
One or more PDF files
Free PDF signature online: open your PDF here, create a signature — draw it with a mouse or your finger, type your name in one of 6 handwriting fonts, upload a photo of it (the paper background is removed) or use your camera — click or drag it onto the page, add initials, dates or text if needed, and click Download. The PDF is signed in your browser and never uploaded; there is no account, no watermark and no limit, and several PDFs can be signed and saved together as a ZIP. Only the optional Phone tab, for drawing on your phone, sends the signature image through our server, which deletes it after 10 minutes. It is a simple electronic signature, accepted for most contracts under the ESIGN Act, eIDAS and UK law — not a certificate-based digital signature.
Last updated: October 23, 2026
How it works
The full sign-and-download workflow takes most users under 60 seconds. The tool does not require account creation or email verification — drop your file in and you are signing within 5 seconds.
Drag your PDF onto the upload area, or click to browse from your device. You can pick several PDFs at once and add more from inside the editor. There is no file-size or page-count cap beyond your device's memory, because files are opened in your browser — the PDF is never uploaded to a server.
Draw it with your mouse, trackpad or finger, type your name in one of 6 handwriting fonts, upload a PNG or JPG photo of your handwritten signature (the paper background is removed for you), or take a photo with your camera. Signatures and initials you save are kept in this browser only, for next time.
Click or tap a saved signature to put it on the page you are viewing, or drag it onto the page on a computer, then drag to move it and pull the corner handles to resize. Add initials, dates, text, check marks and stamps the same way, on any page.
Click 'Download'. The signed PDF is generated in your browser and downloaded directly; tick 'Flatten' first only if you want every page turned into an image. Signing several PDFs? Each keeps its own signatures, and 'All as ZIP' downloads them together. The optional Phone tab is the one exception to on-device signing: the signature you draw on your phone passes through our server, which deletes it automatically after 10 minutes.
Signature methods
Pick the method that fits the device you’re on. All three produce a transparent signature image you can place anywhere on the page.
Type your name and pick from 6 handwriting fonts: Caveat, Dancing Script, Great Vibes, Pacifico, Sacramento, and Satisfy. Fastest method on desktop or mobile when you do not have a saved signature image. The fonts are served from OneClickPDF itself, so typing your name sends nothing to a third party, and the result is a transparent signature image that sits cleanly on the page.
Draw a signature freehand with your mouse, trackpad, finger, or stylus. Optimised for touchscreens on iPhone, iPad, and Android, plus Wacom-style stylus input on tablets. The most authentic-looking option since the result mirrors how you actually sign.
Sign a sheet of white paper, photograph it with your phone or scanner, and upload the image. The tool removes the background and produces a clean, transparent signature ready to drop onto any PDF page. Or upload a pre-made transparent PNG signature you already have on file.
Legal validity
Yes — under three major legal frameworks covering the United States, European Union, and United Kingdom plus most of the Commonwealth. OneClickPDF signatures qualify as Simple Electronic Signatures (SES), valid for the vast majority of business documents.
Under the Electronic Signatures in Global and National Commerce Act of 2000 (ESIGN Act), electronic signatures have the same legal validity as handwritten ones for federal interstate commerce. The Uniform Electronic Transactions Act (UETA), adopted by 49 of 50 states (New York uses a parallel statute), governs intra-state contracts. OneClickPDF signatures qualify as Simple Electronic Signatures suitable for most consumer and business contracts.
Regulation (EU) 910/2014 (eIDAS) establishes three signature levels across all 27 member states: Simple Electronic Signature (SES), Advanced Electronic Signature (AdES), and Qualified Electronic Signature (QES). OneClickPDF produces SES, suitable for most contracts, NDAs, and consent forms. AdES and QES require additional certificate-based identity binding via a Qualified Trust Service Provider.
The UK Electronic Communications Act 2000 (with post-Brexit amendments) gives electronic signatures the same evidential weight as wet-ink signatures. Most Commonwealth jurisdictions have parallel frameworks: Australia (Electronic Transactions Act 1999), Canada (PIPEDA plus provincial statutes such as Quebec’s Act to Establish a Legal Framework for Information Technology), and India (Information Technology Act 2000).
Why OneClickPDF
Unlimited PDF signing with no daily, hourly, or page limits, ever.
Sign within 5 seconds of arriving — no email verification, no credit card.
The signed file is clean output — no OneClickPDF logo, branding, or 'sample' overlay.
100% browser-based — your PDF is never uploaded. The optional Phone tab sends only the signature image through our server, which deletes it after 10 minutes.
Compliant with US ESIGN Act, EU eIDAS Regulation, and UK ECA 2000.
Works in any modern browser on Windows, macOS, Linux, iOS and Android.
Type, draw, or upload — pick the method that fits your device and document.
Add signatures, initials, dates, and text fields anywhere on a document, or open several PDFs, sign each one, and download them all as a ZIP.
Side-by-side
A capability-by-capability comparison across the four alternatives most users evaluate alongside OneClickPDF for online PDF signing.
| Feature | Ours | Smallpdf | PDF24 | Sejda | Adobe Sign |
|---|---|---|---|---|---|
| Free, unlimited signing | 7-day trial | (with ads) | 3/hour limit | Paid only | |
| No watermark | |||||
| No account required | Trial sign-up | Account required | |||
| No software install | (web) | ||||
| File auto-delete | Files never uploaded | 1 hour | 1 hour | Same session | User-managed |
| TLS encryption | TLS 1.3 (page only) | TLS 1.2+ | SSL/TLS | TLS 1.2+ | TLS 1.2+ |
| Mobile signing | Native browser | App needed | Browser | Browser | Browser + app |
| Multi-party signing on one file | No (manual only) | Sign.com tier | Limited | ||
| Audit trail / Cert. of Completion | Sign.com tier | ||||
| File size cap | None (device memory) | Limited | Generous | 50 MB | Generous |
| Page count cap | None | Limited | Generous | 50 pages | Generous |
| Pricing for full access | Free | USD 9+/mo | Free | USD 7.50+/mo | USD 14.99+/mo |
Competitor information was accurate at time of publication and may have changed.
Bottom line: OneClickPDF wins for individuals and small businesses who need fast, friction-free signing without paywalls or registration. Adobe Sign is the only viable choice when you need full audit trails and Certificate of Completion documentation for regulated workflows.
Use cases
The vast majority of business signing activity falls into one of these five categories — all served by Simple Electronic Signatures, all valid under ESIGN, eIDAS, and UK ECA frameworks.
Service agreements, scope-of-work documents, and rate sheets. Independent consultants and contractors close deals faster when the signature is one click away — no print, sign, scan, return cycle.
Non-disclosure agreements between businesses, contractors, and partners. Protect confidential information without printing, scanning, and emailing back. Both parties sign on whichever device is convenient.
Employment offers, internship agreements, and freelance engagement letters. HR teams send a signed PDF the moment terms are agreed — candidates counter-sign and return on the same screen.
Lease agreements, rental applications, and property disclosures. Tenants and landlords exchange signed copies without meeting in person — particularly useful for remote leasing and property management.
Patient consent forms, HIPAA acknowledgements, and treatment authorisations. Clinics share signed documents with the patient and the records system without paper, while keeping the file fully on the patient’s device until they download.
Quick guide
An electronic signature is any electronic mark that demonstrates intent to sign — a typed name, a drawn signature, an uploaded image, or even a checkbox ‘I accept’. A digital signature is a specific subset that uses Public Key Infrastructure (PKI) and an X.509 digital certificate (RFC 5280) to cryptographically bind the signer’s identity to the document, producing a tamper-evident hash that detects any post-signing modification. Both are legally valid in most jurisdictions; digital signatures provide stronger non-repudiation and are required in regulated workflows such as pharmaceutical submissions, court filings, and certain government procurement processes. OneClickPDF produces an electronic signature, suitable for the everyday contracts, NDAs, offer letters, and consent forms that account for the vast majority of business signing activity.
No printer? No problem. Sign any PDF digitally — draw, type, or upload your signature. Place it on any page, free and private in your browser.
Sign contracts, agreements, and legal documents digitally. Place your signature on any page — legally valid, free, and completely private.
Spot every change between contract versions with pixel-level comparison. Highlights additions, deletions, and subtle edits — free and private in your browser.
Upload your file, drop a signature, download — under 60 seconds, no account, no watermark.
Start signing now
Protect PDF
Password-protect a PDF with AES encryption (128-bit by default, 256-bit optional) and choose whether it can be printed or copied — in your browser.
Redact PDF
Permanently black out names, account numbers, addresses, or any sensitive content before sharing. Redactions are baked into the file — not just overlaid.
Fill PDF Form
Fill in an existing PDF form without any software — type into text fields, tick checkboxes and pick dropdown options, then download it.
Flatten PDF
Bake all annotations and form fields permanently into the PDF.
