Sign PDF Free Online — Browser-Based PDF Signer, No Upload

Private by design

Your PDF is processed in the browser instead of being uploaded to a remote signing server.

Built for real documents

Add signatures, freeform text, and date fields before saving the final PDF.

Works on desktop and mobile

Open the same signer on Mac, Windows, iPhone, Android, or Chromebook and sign from any modern browser.

How to sign a PDF online

The editor stays simple on purpose: upload your PDF, place the fields you need, then save the finished file.

1

Upload your PDF

Open the Signpdf editor and choose a PDF file from your device.

2

Add signature, text, or date

Draw a signature, type annotations, or place a date field directly on the page.

3

Download the signed PDF

Create a free account when you are ready to save, then download the final signed PDF.

What you can add before downloading

Signpdf is optimized for fast document completion instead of bloated document workflows.

Hand-drawn signatures for contracts and forms
Typed text for names, initials, and short notes
Date stamps for common signing workflows
Multiple placements across one or more PDF pages

Best for fast signing workflows

This browser-based PDF signer works best when you already have a finished document and need to complete the last step: add a signature, date, or short note and download the signed PDF.

Client agreements and proposals

Quickly sign contracts, approvals, and one-off PDFs without sending the file to a third-party signing queue.

Forms and internal paperwork

Add signatures, names, and dates to HR, school, or admin documents when all you need is a completed PDF back on your device.

Privacy-first document handling

Use the local browser workflow when you want the convenience of online signing without relying on upload-first processing.

Related tools and guides

If you need more than simple PDF signing, use the supporting tools below to prepare signatures, convert files, or read the full tutorial first.

Create a signature file

Start with Signature Maker if you want a reusable PNG or JPG signature before opening the signer.

Convert Word documents first

Use Word to PDF when the document still lives in `.docx` and needs to become a signable PDF.

Need the full walkthrough?

Read How to Sign a PDF for a step-by-step explanation and common signing questions.

Frequently asked questions

These are the questions users usually ask before trying the signer for the first time.

Is my PDF uploaded to a server?

No. Signpdf renders and edits the document locally in your browser, so the PDF never leaves your device during signing.

Do I need to install Adobe Acrobat or another app?

No. The signer runs in the browser on desktop and mobile, so you can add signatures, text, and dates without installing extra software.

Do I need an account to save the final PDF?

You can open and prepare the document in the editor right away. When you are ready to download, Signpdf asks you to create a free account and includes 3 signed PDFs per day on the free plan.

Can I sign a PDF on my phone?

Yes. The editor works in mobile browsers, so you can upload a PDF and draw your signature with your finger on iPhone or Android.

Need the full walkthrough first?

Read the step-by-step tutorial or create a transparent signature image before opening the PDF signer.