How to sign a PDF online without printing it

Guide · Updated 2026-11-10

What an electronic signature is and is not, how to place a signature, initials and a date on a PDF, and how to check the signed copy before you send it.

Open the Sign PDF Free, in your browser, nothing uploaded.

Printing a form just to sign it, then scanning it back in, wastes paper and time. The sign PDF tool lets you make a signature on screen and stamp it onto any page of a PDF, along with your initials, a date or a short note, all inside your browser. It is handy for tenancy papers, school consent forms, job offer letters and supplier agreements. Type into the form boxes first with fill PDF, put the pages in the right order with organise PDF, and if the signed file is too large to email, shrink it with file compressor.

What it is

There are two very different things people call a “digital signature”.

• A simple electronic signature is a mark that shows you agreed, such as a picture of your handwriting placed on the page. It is the on-screen version of signing a printout. This is what the tool makes.
• A certificate-based signature uses a digital ID issued by a trusted provider. It locks the file and records who signed and when. This tool does not make that kind; if a form asks for it, the sender will name the service to use.

The tool builds your signature as a picture with a see-through background, cut tightly around the ink. When you save, it is drawn into the page itself (this is called flattening), so it is no longer a loose layer that slides around when someone opens the file.

Sizes on the page are worked out as fractions of the page. A new signature starts at 30% of the page width and new initials at 10%, keeping the shape of what you made. You can then resize them by hand.

How to use it

1. Press Choose a PDF to sign, or drop the file on the box. Each page appears below as a preview.
2. Make your signature on one of three tabs: Draw on the pad (press Clear to start over), Type your name and pick a writing style, or Upload picture of a signature on paper. On the upload tab, Make the white background clear removes the paper colour.
3. Check the Your initials box. When you type your name, it fills itself with the first letters; you can overwrite it.
4. Press Add signature, then tap the spot on the page. Drag the dashed box to move it, pull its square corner to change its size, or press its x to remove it.
5. Do the same with Add initials, Add date and Add text. The Date text box starts with today’s date as year-month-day, and Other text takes anything short, such as “Approved”. Tick Put my initials on every page to copy your first initials to the same spot on every other page.
6. Press Download signed PDF. The file keeps its name with “-signed” added. Open it and check every page before you send it.

A worked example

Sam has a four-page A4 tenancy agreement. The landlord wants initials on every page and a full signature with the date on page 4.

Make the marks. Sam types “Sam K Okafor” on the Type tab and picks a style. The initials box fills itself with SKO.

Size on the page. A4 is 210 mm wide. The new signature starts at 30% of that: 0.30 × 210 mm = 63 mm wide. The initials start at 0.10 × 210 mm = 21 mm wide. Sam drags the signature corner until it fits the line.

Place them. Sam presses Add signature and taps the line on page 4, then Add date and taps beside it. The date reads 2026-11-10; Sam changes it to “10 November 2026”. Then Add initials, a tap in the bottom corner of page 1, and a tick in Put my initials on every page.

Count the marks. Sam placed 3 marks: signature, date and one set of initials. The tick copies the initials onto the other 3 pages, so the file gets 3 + 3 = 6 marks on 4 pages, and the message after saving says so.

Where it is used

• Renting and housing. Leases, inventories and move-out forms often need initials on each page.
• Schools. Permission slips and trip forms can be signed on a phone in a minute.
• Freelancers and small firms. Quotes, purchase orders and simple contracts can be signed and returned the same day.
• Human resources. Offer letters and policy acknowledgements are often a signature and a date at the bottom.
• Approvals. The Add text button stamps a word such as “Approved” or “Received” with your initials on invoices and delivery notes.

Common mistakes

• Signing before filling in the form. Fill the fields first, then sign, so nothing is added under your signature later.
• Uploading a dark or shadowed photo. The clear-background setting removes only pale paper. Sign in black ink on white paper, in good light, for a clean result.
• Forgetting the every-page box copies only the first initials. Place one set on page 1 where you want them on all pages, then tick the box.
• Sending without checking. Open the downloaded file and scroll through every page; a mark can end up on the wrong page with a stray tap.
• Using it where a certificate is required. Some government, bank and property forms ask for a certified digital ID. Check the official source for your document.

Questions people ask

Can I sign on a phone? Yes. Draw with your finger on the pad, then tap the page to place it. A stylus gives a smoother line.

Can I fix a mistake after I download? Not in the saved file, because the marks are flattened. Open your original PDF again and redo the signing.

Is a typed name really a signature? It can be, for many everyday papers, because what counts is that you meant to agree. For important documents, check the official source for the rules where you live.