Sign any PDF instantly. Draw your signature or generate a beautiful cursive one — free, no account needed.
Users
13
+2 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
2
0 in 30 days
Store rank
#180K
#151K among extensions
Version
1.0
updated 31 Jul 2026
Users
monthly, 3 months
Latest, 21 Oct 2026:13 usersMove the mouse over the chart for any month
Ratings count
monthly, 3 months
Latest, 21 Oct 2026:2 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About SmoothSign
SmoothSign — Free PDF Signing & Annotation for Chrome
Sign, annotate, and download PDFs directly in your browser. No account. No watermark. No paywall. Free forever.
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Why SmoothSign?
Most PDF signing tools give you a taste for free, then hit you with a subscription the moment you try to download your document. SmoothSign does the
opposite — everything is free, everything works, and nothing is locked behind a plan.
It was built out of frustration with exactly that experience. Simple tasks like adding a signature or a date to a PDF should not require a monthly
subscription. SmoothSign is the tool that should have existed already.
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What you can do
✍️ Sign your documents
Draw your signature freehand using your mouse or trackpad, or type it in cursive script. Save up to 3 signatures to your personal library and reuse them
across any PDF with a single click. Drag to reposition, drag the corner to resize.
🔤 Add initials
Create and save up to 3 sets of initials in your choice of font — Georgia, Arial, or Courier. Place them anywhere on the document just like a full
signature.
📝 Add text anywhere
Place text overlays in three font styles — sans-serif, serif, or monospace. Choose your font size, change the color, drag to move, and double-click to
edit. Copy and paste text boxes with Cmd+C / Cmd+V. Perfect for filling in form fields, adding names, addresses, reference numbers, or any other
information.
📅 Date stamps
Stamp today's date instantly with one click, or pick a specific date from a calendar. Dates are placed as editable text overlays so you can reposition
them anywhere.
🖊️ Highlight
Draw highlight rectangles over any part of your document by clicking and dragging. Change the highlight color using the built-in color picker. Highlights
are embedded into the downloaded PDF.
✓ Marks & symbols
Place checkmarks, X marks, dots, circles, stars, arrows, and more anywhere on your document. Choose from a symbol picker and click to place. Great for
filling out checklists and forms.
🖨️ Print
Print your signed document directly from the browser with a single click. Signatures and annotations print exactly where you placed them.
⬇️ Download
Download your signed PDF with all annotations permanently embedded. The file is ready to share, email, or archive.
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Your privacy is built in
SmoothSign runs entirely in your browser. Your PDFs are never uploaded to any server — they are processed locally on your device. Your saved signatures
and initials are stored only in your browser using Chrome's local storage. Nothing leaves your computer. No data is collected. No account is required.
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Keyboard shortcuts
- Escape — deactivate the active tool or exit text editing
- Delete / Backspace — remove the selected annotation
- Cmd+C / Cmd+V — copy and paste text overlays
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How it works
1. Click the SmoothSign icon in your Chrome toolbar to open the popup
2. Draw or type your signature and save it to your library
3. Click "Open PDF Signer" to open the signing tab
4. Choose your PDF file
5. Click your signature in the tray, then click anywhere on the PDF to place it
6. Drag to reposition, drag the corner handle to resize
7. Add text, dates, highlights, or marks as needed
8. Download your signed PDF
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No account required
No watermarks
No subscriptions
No data collection
Works offline
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About SmoothApps
SmoothSign is the first tool in the SmoothApps suite — a collection of free, clean productivity tools for the browser. More tools are coming. The goal is
simple: useful things should be free.
If SmoothSign has saved you time, consider buying me a coffee at buymeacoffee.com/smoothapps. It keeps the lights on and motivates more tools like this
one.
Have a feature request or found a bug? Use the feedback form linked in the extension — every submission is read personally.