Real signatures
Draw a signature with your trackpad or mouse, save it, and reuse it across documents. Signatures stay in your browser — they never leave your device.
Chrome extension
Fill forms, place signatures, add text. Every file is processed locally by your browser.
How it works
Drag a file into the editor, or pick one from your disk. Up to 50 MB per file.
Draw a signature, reuse a saved one, add text, checkmarks, and dates — right on the page.
Get the signed PDF back on your disk. Nothing was sent to us along the way.
Privacy by architecture
PDF Sign reads, edits, and saves your file entirely inside the browser tab. No upload step, no temporary server copy, no third-party OCR. The only thing we touch server-side is a counter that exists solely to enforce the free-tier 1-file limit.
We store: a sign-in identifier, your plan (Free or Pro), and a freemium-limit counter — that's it.
We never see: the PDF content, the values you typed, or your signature image.
Why not DocuSign or Adobe
PDF Sign produces the same Simple Electronic Signature class as DocuSign and Adobe Acrobat — the right level for everyday leases, offers, and NDAs. Without uploading the file or paying the monthly enterprise bill.
| PDF Sign | DocuSign | Adobe Acrobat | |
|---|---|---|---|
| Uploads file to cloud | No | Yes | Yes |
| Try the editor without an account | Yes | No | No |
| Monthly price | $2.99 | from $15 | from $19.99 |
| Editor works offline | Yes | No | Partial |
| Signature class | SES | SES | SES |
Prices as of 2026-04. PDF Sign requires a Google sign-in only at the download step — the editor is open without one. SES = Simple Electronic Signature under ESIGN and eIDAS — the right level for everyday business documents. Not Advanced (AES) or Qualified (QES); those need a Certificate Authority and none of the three ship them.
What's inside
Draw a signature with your trackpad or mouse, save it, and reuse it across documents. Signatures stay in your browser — they never leave your device.
Five classic fonts — Helvetica, Times, Courier, Roboto, Open Sans — available for every text field.
Click a field, type. Checkboxes, dates, and free text — overlaid on the existing document without altering the original.
Open the editor, load a PDF, draw signatures, and fill fields — no account required to try it all. Sign in only when you're ready to download.
Pricing
$0
1 signed file total
$2.99 /mo
or $29.99 billed yearly — save 17%
PDF Sign is a paid tool ($2.99/mo) because that's what keeps it running without tracking you, showing ads, or paywalling features you already use. Free-forever privacy tools eventually compromise on one of those three — we'd rather charge $2.99 and stay honest about scope.
FAQ
No. Reading, editing, and signing all happen inside your browser tab using pdf-lib and pdfjs. The only thing our server stores is an anonymized counter — how many files your account has signed — so the free-tier limit can be enforced. The PDF itself, the form values, and the signature image never hit our infrastructure.
Yes, after install. You can open the editor, load a PDF, sign, fill, and preview without a network connection. The only online moment is download — we contact our backend to verify sign-in and increment the usage counter (1-file limit on Free, unlimited on Pro).
No. PDF Sign produces a Simple Electronic Signature (SES) under ESIGN and eIDAS — the right level for everyday leases, offers, NDAs, and internal forms. It is not eIDAS Advanced (AES) or Qualified (QES). Those require a Certificate Authority and a cryptographic time-stamp, which PDF Sign does not ship today.
To make the freemium limit fair — one free signed file per Google account. Sign-in happens at download, not at open, so you can try the full editor without creating anything. We use chrome.identity, so you get the native Chrome account picker, not a redirect to a browser tab.
Yes. Billing runs on Stripe through ExtensionPay. You can cancel from the extension's options page at any time, no questions. Your Pro plan stays active until the end of the period you already paid for.
Any PDF up to 50 MB. Fonts available for text overlays: Helvetica, Times, Courier (Latin only), Roboto, Open Sans (Latin + Cyrillic + Greek). The signed file is written back as a standard PDF — it opens in any reader.