Sign PDF documents online for free. Draw your signature with a finger or mouse, type your name in signature fonts, or upload a PNG image — 100% private in-browser processing with zero server uploads.
Create an electronic signature that matches your style and document requirements:
PDFZento is fully responsive and touch-optimized for mobile devices. Sign contracts and forms directly on your iPhone, iPad, or Android phone without installing external apps or creating accounts. The same browser-based tool runs on macOS and Windows desktops in Safari, Chrome, Firefox, or Edge. Simply open your PDF, create your signature with mouse, finger, or stylus, place it where needed, and download the finished file.
| Tool | Primary Purpose | Visual Output | Access Control |
|---|---|---|---|
| Sign PDF | Add drawn, typed, or uploaded electronic signatures | Signature placed on designated lines | Unrestricted view |
| Protect PDF | Encrypt document and enforce password authorization | Standard document pages | Password required to view or print |
| Flatten PDF | Bake form fields and annotations into static vectors | Identical appearance without editable fields | Non-fillable static pages |
| Remove Metadata | Strip author, title, and creation histories | Unchanged visual pages | Sanitized document properties |
Unlike traditional online PDF signers that upload your personal contracts, tax forms, or legal agreements to third-party cloud servers, PDFZento processes everything on-device inside your web browser. Your PDF files never leave your computer or phone, and no document data is ever stored, transmitted, or tracked.
Avoid printing, hand-signing, and scanning physical paper. PDFZento provides a fast, free, and private way to add electronic signatures to PDF documents online. With support for multiple pages, customizable signature sizing, instant document replacement, and zero watermarks, you can finalize paperwork in seconds.
Select your PDF in PDFZento, create your signature by drawing with a finger or mouse, typing your name, or uploading a PNG image, place it anywhere on the document, and download your signed PDF. No account, credit card, or payment is required.
Open your PDF file, choose Draw, Type, or Upload in the signature panel, create your signature, and click Apply Signature. You can move the signature to the exact signature line, resize it to fit, and sign multiple pages before downloading.
Yes. PDFZento works seamlessly in mobile browsers on iPhone (Safari) and Android (Chrome). You can draw your signature naturally with your finger or stylus, position it on the document, and download your signed PDF on mobile without installing an app.
Yes. Select the Type tab, enter your name, and choose from curated signature-style fonts including Classic Script, Handwriting, Modern, or Script. PDFZento generates a crisp signature ready to place onto your PDF.
Yes. You can upload transparent PNG, JPG, or WebP images of your handwritten signature. Transparent PNGs are recommended so your signature overlays cleanly onto document text and signature blocks without a solid background box.
Yes. Use the page navigation buttons (Previous/Next) to move across pages. You can place signatures on as many pages as needed, and all placements are preserved when downloading your completed PDF.
No. All document rendering, signature placement, and PDF export execute 100% locally in your browser memory. Your confidential contracts, forms, and signatures never leave your device.
PDFZento lets you add an electronic signature — drawn, typed, or uploaded as an image — that is placed directly onto the page. A certificate-based digital signature, which cryptographically binds a certified identity to the file and supports verification, is a different technology and is not part of this tool.
No. An electronic signature is the visual act of signing — such as a drawn, typed, or scanned signature image placed on the document. A certificate-based digital signature uses cryptographic technology tied to a certified identity. PDFZento creates electronic signatures placed on your PDF; it does not create certificate-based digital signatures.
Yes. PDFZento runs as a browser-based web app, so you can sign PDFs on macOS and Windows in Chrome, Firefox, Edge, or Safari with no app installation required. It also supports touch drawing in mobile browsers on iPhone and Android.
Yes. Your PDF is processed entirely inside your web browser — the document bytes, signature, and export are never sent to or stored on any server.
No. The Sign PDF tool is focused on adding signatures to a document. It does not fill interactive form fields, checkboxes, or date fields. For signature-only workflows, such as signing a printed contract or scan, you place your electronic signature directly onto the document.
Whether an electronically signed document is legally binding depends on the type of signature, the document involved, and the laws that apply to your situation. PDFZento places an electronic signature onto the PDF; this tool does not create certificate-based or qualified electronic signatures, and it does not provide legal advice.
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