Question 1

Will the signed PDF look the same as what I see in the preview?

Accepted Answer

Yes. PDF5 renders each page of your PDF to a thumbnail using pdf.js, paints the signature overlay at the exact coordinates you drag it to, then stamps the same rasterised signature onto the PDF with pdf-lib. The output is byte-incremented, not re-rendered — text stays selectable, attachments and form fields survive, and what you saw is what you ship.

Question 2

Can I sign more than one page?

Accepted Answer

Yes — sign as many pages as you need, one at a time. Pick a page from the row of thumbnails, drag the signature into place, click Apply & Download, then pick the next page. Each signed page is its own download; stack them back together with the merge tool when you are done.

Question 3

How do I move the signature after placing it?

Accepted Answer

Click and drag the dashed signature box anywhere on the page thumbnail. The X/Y position is tracked as a ratio of the page size, so the placement stays stable if the thumbnail is resized for your screen. Drag it flush with the signature line on the original document, release, then Apply & Download.

Question 4

What file size limit do you enforce?

Accepted Answer

The free tier accepts a single PDF up to 20 MB per file — the same cap as every PDF5 tool. Pro removes the limit and lifts batch processing on the rest of the toolbox. There is no charge for the e-sign tool itself: drawing a signature and applying it is part of what you paid with the free tier.

Question 5

Can I sign an encrypted / password-protected PDF?

Accepted Answer

No — open it locally first. The browser File API cannot read encrypted PDFs in-page. Remove the password in your normal viewer, drop the unlocked file here, then re-encrypt or password-share it wherever you store it. The original password is never sent anywhere, because the bytes never leave your tab.

Question 6

Is my PDF uploaded anywhere?

Accepted Answer

No. PDF5 ships its signing engine inside the browser tab. Open DevTools, watch the Network panel — there is zero outbound file traffic while you draw, place, and apply the signature. The bytes stay in memory on your machine until your browser hands them back as a download.

Question 7

Does this work offline?

Accepted Answer

Yes, after the first page load. Both the PDF-lib write engine and the pdf.js render worker are cached by the browser, so airplane mode is fine — re-pick a PDF, re-draw a signature, re-position it, re-apply, and re-download without a connection.

Question 8

Does the signature validate legally?

Accepted Answer

The signature you draw is an image stamp baked into the PDF — it reads visually as a signature on the page. Whether that is legally binding depends on the law in your jurisdiction (electronic signature laws, eIDAS in the EU, ESIGN Act in the US) and the risk of the contract. For high-value agreements, layer in a cryptographic signature from a dedicated tool; this one is built for everyday signing, internal approvals, and routine acknowledgments.

Sign a PDF. Draw it. Drag it. Download.

Drop the PDF, draw the signature, place it on the page you want.

Three steps. No upload stage.

Draw your signature

Pick a page, drag it into place

Apply and download

Questions that come up before the first signature.

Draw it. Place it. Ship the signed file.