1
Select your PDF
Drag and drop your PDF document or choose it from your local storage. The document renders instantly on your screen.
100% Browser SecurityNo Cloud Uploads
Official Chrome ExtensionSign & Edit PDF Documents Online Free & Privately
Sign PDFs, fix text in the document's original font, redact private details, and organize pages. Free, no sign-up, no watermarks, and your file never leaves your device.
Tap to Select PDF DocumentDrag & Drop your PDF file here
Supports all standard PDF documents up to 50MB
or try the sample
100% Private
Instant Local
No Watermark
How it works
How to Sign a PDF Online in 3 Simple Steps
Fast, intuitive, and private. Nothing to install.
2
Create your signature
Draw your signature with a touchscreen or mouse, type it in realistic cursive script, or upload an image file.
3
Place, edit & download
Click to place your signature, or switch to Edit Text to fix any line. Then download your finished PDF instantly.
New: Edit Text
Edit PDF Text Without Changing the Font
Spotted a typo, a wrong date, or an old amount? Click the line, type the correction, and it blends in with the rest of the document. No retyping the whole contract, and every change can be undone.
- Edit, move, restyle or delete any line, in its original font
- Add new text that matches the document, plus dates, ✓ and ✗
- Find & replace a name or amount across every page
- True redaction: removes the text and image content under the box
- Rotate, reorder or delete pages
- Runs entirely in your browser. Your PDF never leaves your device
Most PDFs only embed the letters they use. If a word needs a missing letter, that word uses a matching font (for example Carlito for Calibri) and we tell you before you add it. Scanned documents can't be edited.
All tools
Everything You Need to Finish a PDF
Sign, edit, redact and organize your documents. All free, all in your browser.
Sign & initial
Draw, type or upload a signature, save profiles for the whole family, and place them anywhere.
Edit existing text
Change words, move, restyle or delete any line, in the font the PDF already uses.
Add matching text
New text starts in the font, size and color of the nearest line, so it blends in.
Find & replace
Update a name, date or amount on every page at once, keeping each line's font.
True redaction
Black out account numbers or IDs. The content underneath is removed from the file, not hidden.
Organize pages
Rotate, reorder or delete pages. Placed signatures move with their page.
Dates, ✓ and ✗
Stamp today's date or tick boxes in one click, sized to match the form.
Undo anything
Every change is listed and can be undone, redone or highlighted before you download.
Use cases
Sign Any PDF Document Type
Works with standard PDF forms, legal contracts, and financial documents
Business Contracts & NDAs
Sign Non-Disclosure Agreements, service contracts, and vendor agreements instantly without waiting for printer queues.
Real Estate & Rental Leases
Easily sign residential lease agreements, sublease forms, and property disclosures directly on your desktop or phone.
Tax Forms & Government Filings
Sign W-9, W-2, 1099, and IRS tax documents safely with zero risk of sending sensitive SSN details to third-party servers.
Employment Offer Letters
Accept job offers and sign onboarding documentation in seconds with professional typed cursive or drawn signatures.
Academic & Permission Slips
Sign school enrollment forms, athletic consent forms, and university applications effortlessly.
Invoices & Purchase Orders
Approve vendor invoices and sign purchase orders to maintain smooth financial workflows for your business.
Compare
Why Choose SignPDF Over Cloud E-Sign Services?
Private, in-browser signing versus expensive cloud e-signature vendors
Feature
SignPDF
Cloud Services
Price / Cost
100% Free Always
$15 - $40 / month
Server File Storage
Zero (100% Local Browser)
Stored on Cloud Servers
Account Registration
Not Required
Mandatory Sign Up
Document Monthly Limit
Unlimited Documents
3 - 5 Files / Month Free
Signature Reusability
Saved Locally in Browser
Locked Behind Paywall
Watermarks Added
None (Clean Export)
Watermarked on Free Plans
Edit Existing PDF Text
Free, Keeps Original Font
Often Paid Plans Only
Redaction
True Removal, Free
Pro Plans Only
Rotate & Reorder Pages
Included
Separate Tool or Paid
Standards
E-Signature Legal Compliance & Standards
Built on recognized electronic signature frameworks and ISO PDF specifications
US ESIGN Act Compliant
Meets requirements under the Electronic Signatures in Global and National Commerce Act (15 U.S.C. ch. 96).
EU eIDAS Standard
Satisfies Simple Electronic Signature (SES) criteria under European Union Regulation No 910/2014.
ISO 32000 PDF Spec
Outputs clean, valid PDF documents with embedded vector graphics compatible with Adobe Acrobat and all readers.
Zero Cloud Data Storage
Your documents, signatures, and personal details remain strictly in your browser memory and IndexedDB storage.
Guides
E-Signature Knowledge Base & Guides
Practical tips for signing PDFs safely on any device
Mobile Signing Guide
How to Sign PDF Documents on Mobile (iPhone, iPad, & Android)
You don't need expensive mobile apps to sign agreements on your smartphone. Open SignPDF in Mobile Safari or Chrome, tap "Choose PDF File", draw your signature smoothly using your touchscreen finger or Apple Pencil, and download your signed document instantly.
Confidentiality & Privacy
Why Client-Side PDF Editors Protect Your Tax & Financial Forms
Uploading W-9, 1099, or bank documents to online PDF servers exposes sensitive Social Security Numbers (SSNs) and financial details to potential server breaches. SignPDF uses browser-native WebAssembly to process PDF byte arrays directly on your device, ensuring total privacy.
Signature Styles
Draw, Type Cursive, or Upload Image Signatures
SignPDF provides three flexible methods to create your electronic signature: smooth canvas drawing with variable pen stroke width, typed signatures converted to authentic cursive fonts (Dancing Script, Caveat, Great Vibes), or uploading a high-contrast PNG/JPG image.
Multi-Profile Feature
Manage Multiple Signature Profiles for Personal & Work Use
Easily switch between full formal signatures, quick initials, and custom corporate stamps. SignPDF lets you save multiple signature profiles locally in your browser so you can sign contracts with the appropriate signature in one click.
Official Chrome Extension
Sign PDFs in 1-Click Directly from Your Chrome Toolbar
The official SignPDF Chrome extension works as a fast shortcut toolbar button. Pick any PDF from your computer or downloads folder and jump straight into our secure web editor.
1-Click Shortcut
100% Client-Side
Free Forever
SignPDF Extension
Available on Google Chrome Web Store
Verified & Free
FAQ
Frequently Asked Questions (FAQ)
Clear answers on privacy, legal validity, and features
Traditional e-signature platforms upload your sensitive PDF documents (containing bank details, SSNs, and confidential clauses) to remote cloud servers. SignPDF processes everything locally inside your browser sandbox using WebAssembly and PDF.js. Your file never touches external servers.
No. SignPDF operates with 100% client-side security architecture. Neither your PDF files nor your created signatures are ever sent to, saved on, or logged by remote servers.
SignPDF ensures 100% client-side isolation—your document never leaves local device RAM. Additionally, signatures and annotations are vector-flattened directly into the PDF structure using pdf-lib, preventing downstream layer tampering or unauthorized editing.
Yes! Electronic signatures applied via SignPDF embed standard ISO-32000 compliant vector graphics and metadata objects directly into the PDF structure. This satisfies Simple Electronic Signature (SES) requirements under laws like the US ESIGN Act and EU eIDAS regulation.
SignPDF signatures meet standard requirements for Simple Electronic Signatures (SES) globally: in the US under the ESIGN Act (15 U.S.C. § 7001) and UETA; in the EU under eIDAS Regulation (EU No 910/2014); in the UK under the Electronic Communications Act 2000; and in Canada under PIPEDA.
Yes, SignPDF is 100% free with unlimited document uploads and signature generations. There are no watermarks, forced trial periods, credit card requirements, or artificial document caps.
Absolutely. SignPDF automatically saves your created signature profiles locally in your browser storage so you can sign future contracts, forms, and invoices with a single click.
Yes. Switch to "Edit Text" in the editor, click any line, and type your change. SignPDF reuses the font embedded in your PDF so the new text matches the original size, color, and style. Most PDFs only embed the letters they actually use, so if a word needs a letter that is missing from the font, that word uses a matching font (such as Carlito for Calibri or Arimo for Arial) and SignPDF tells you. The old text is removed from the file, not hidden under a white box.
Yes. When you redact an area, SignPDF deletes the text under it from the PDF and blanks the pixels of any image beneath it, then draws a solid box. Unlike tools that only paint a black rectangle, the hidden information cannot be copied, searched, or recovered from the downloaded file.
Yes! SignPDF is fully responsive and supports touchscreens, allowing you to draw smooth signatures with your finger or stylus on iOS (iPhone/iPad) and Android devices.