OTL
PDF Tools

Sign PDF

Draw, type, or upload your signature and place it anywhere on a PDF — free, private, no account.

Also known as: eSign PDF, PDF signature tool, Online PDF signer, Electronic signature for PDF

100% FreeNo Signup RequiredFiles Never UploadedDraw, Type, or Upload
100% local — your file never leaves this browser tab
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Step by step

How it works

  1. 1Upload the PDF you need to sign.
  2. 2Create your signature: draw it, type it in a script font, or upload a photo of it.
  3. 3Click anywhere on the page to place it, then drag or resize to fit.
  4. 4Click "Save signed PDF" and download your file.
Why OTL

Why use Sign PDF

Three ways to sign

Draw with a mouse or touchscreen, type in a handwriting-style font, or upload a photo of your real signature.

Reusable signature tray

Build a signature once and place it on multiple pages without redrawing it each time.

Clean stamps from photos

Uploaded signature photos can have their white background removed automatically, so no rectangle shows around them.

Distortion-free resizing

Signatures resize proportionally, so they never end up stretched or squashed to fit a space.

Nothing uploaded

Your document and your signature are both processed entirely in your browser tab.

Free, no watermark

No account, no per-document limit, and nothing added to your file besides your signature.

Real-world use

Who uses Sign PDF

Signing a lease or rental agreement

Add your signature directly to a landlord's PDF without printing and scanning it back.

Returning a signed contract

Sign freelance agreements, NDAs, or vendor contracts and send them back the same day.

Consent and permission forms

Sign school, medical, or event consent forms sent to you as a PDF.

Initialing multiple pages

Place a smaller version of your signature or initials on every page of a long agreement.

Signing from a phone photo

Upload a photo of your usual paper signature and reuse it digitally from now on.

Internal approvals

Sign off on internal documents like expense reports or timesheets without printing.

Deep dive

About Sign PDF

The print-sign-scan routine is one of the more pointless rituals of modern paperwork — a document that started digital ends up on paper for a few seconds just so a signature can be added, then gets turned back into a digital file that usually looks worse than the original. Sign PDF skips the paper entirely: your signature goes directly onto the PDF, at the exact position you choose, at whatever size makes sense for the page.

There are three ways to build a signature. Draw treats your mouse, trackpad, or touchscreen as a pen — freehand, on a blank pad, in the color of your choice. Type turns your name into a handwriting-style signature instantly, with a choice of five script fonts, useful when you don't have a stylus or steady hand but still want something more personal than typed block letters. Upload takes a photo of a signature you've already signed on paper — snap it with a phone camera against plain paper — and can automatically strip the white background so it drops onto the page as a clean stamp instead of a rectangle.

However you create it, your signature is kept on a small tray so you can reuse it across multiple pages or documents without redrawing it each time — sign page one, jump to page four for an initial, come back to page one to adjust the size, all before saving. Every placement can be dragged, resized, and undone independently.

Because everything — drawing, rendering the typed font, stripping the background from an uploaded photo, and writing the final PDF — happens locally in your browser, this is a reasonable way to sign something you'd rather not route through a stranger's server: leases, contracts, consent forms, and other paperwork that has your name permanently attached to it.

Compare

Sign PDF vs. other options

How Open Tools Library compares to desktop software and other online tools.

FeatureOpen Tools LibraryDesktop softwareOther online tools
PriceFree, unlimitedOften paid or subscriptionOften free with daily limits
InstallationNoneRequiredNone
File privacyNever leaves your deviceStays localUploaded to a server
Signature creation methodsDraw, type, or uploadUsually draw or upload onlyVaries, often draw only
SpeedInstant, on-deviceFastDepends on upload + server queue
WatermarksNeverNeverSometimes on free tiers
Pro tips

Pro tips

  • The Draw tab works with a stylus or touchscreen too, not just a mouse — often gives the most natural-looking result.
  • For a typed signature, try a couple of the five script fonts before committing — they read very differently at signature size.
  • When uploading a photo, sign on plain white paper with a dark pen; the background-removal works best with high contrast.
  • Once a signature is in the tray, click it again anytime to place another copy — useful for initialing every page of a long document.
  • Drag the resize handle to scale a placed signature — it always keeps its proportions, so it won't look stretched.
Under the hood

Technical specs

Supported input
.pdf
Output format
.pdf
Signature methods
Draw, type, upload photo
Script fonts
5 handwriting-style options
Background removal
Automatic for uploaded photos
Processing location
100% local, in your browser

Privacy & security

A signature is one of the most personally identifying marks you can put on a document, so it deserves to be created and placed somewhere that isn't a stranger's server.

Your PDF, your drawn or typed signature, and any photo you upload are all processed locally — none of it is ever transmitted.

No account or signup, so your signature is never tied to an email address or stored in someone else's database.

Once you download the signed file, nothing about your document or your signature remains on a server.

Just as suited to a one-page consent form as it is to a multi-page contract you're initialing throughout.

FAQ

Frequently asked questions

Is my PDF uploaded to a server?

No. Your PDF, your drawn or typed signature, and any photo you upload are all processed entirely in your browser — nothing is sent anywhere.

Is a signature added this way legally binding?

In most countries, a simple electronic signature like this is legally valid for everyday contracts, consent forms, and agreements. For documents that require a certified or notarized e-signature with an audit trail (some real estate, government, or high-value legal contracts), you'll need a dedicated e-signature service that provides that certification.

Can I use the same signature on multiple pages?

Yes. Once you create a signature it's saved in a tray for your session — click it again to place another copy on any page.

Can I upload a photo of my real signature instead of drawing one?

Yes — the Upload tab accepts a photo, and can automatically remove a white paper background so it looks like a clean stamp rather than a rectangle.

Can I resize or move my signature after placing it?

Yes — select it to drag it into position or resize it with the corner handle. Resizing always keeps its proportions.

Is there a limit on how many signatures I can place?

No hard limit — place as many as you need across as many pages as the document has.

Stuck?

Troubleshooting

My uploaded signature still has a faint rectangle around it

The background-removal step fades near-white pixels to transparent based on brightness — a shadowed or off-white photo background may not clear completely. Retake the photo with even lighting on plain white paper for a cleaner result.

I can't place a signature on a page

That page likely already has its own rotation set in the source PDF, which this tool can't place a signature on accurately. Switch to a different page — the rest of the document is unaffected.

The typed signature font looks like a fallback font, not the script I picked

This can happen very briefly on a slow connection while the font finishes downloading. Wait a moment and click "Use this signature" again.

My placed signature disappeared after I picked a new file

Choosing a different file starts a fresh signing session. Download your first file before switching if you need to keep both.

Ready to use Sign PDF?

Free, private, and ready right now — no signup required.

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