Sign a PDF Online With a Drawn or Typed Mark
Visible Mark, Not CryptographicThe print-sign-scan routine is slow and leaves you with a worse-looking document than you started with. This tool skips it: draw your signature with a mouse or finger, or type your name in one of ten styles, and place it on the page you choose. Pick the page, one of five positions, and one of three sizes; the result downloads as signed.pdf with your original untouched. The point to grasp first is what kind of signature this is: a visible mark, not a certificate-based digital signature. That distinction is the real decision, and it is explained in full below.
When a visible mark is enough
- Returning a completed form: a membership application, a school consent slip, or a supplier onboarding sheet where a visible signature is what the recipient expects.
- Approving an internal document: signing off a purchase request, a timesheet, or a policy acknowledgement within your own organisation.
- A delivery or handover note: confirming receipt on a document that will simply be filed.
- Adding your name to a letter: a cover letter or reference that reads better with a signature above the printed name.
- Working from a phone or tablet: drawing with a fingertip is often quicker than any desktop alternative.
How the signature is placed
The tool builds a new PDF with pdf-lib, a JavaScript library that reads and writes PDF files in the browser. Either signing method ends up as image artwork on the page, not editable PDF text, so the mark cannot be selected, searched, or edited as text afterward.
- Drawn: your strokes are captured and turned into a PNG with a transparent background, so only the ink shows against the page rather than a white box. A signature line is drawn beneath the mark.
- Typed: your name is rendered in one of ten visual styles, in an ink colour you select, onto a canvas that also carries a line beneath it; that canvas is embedded as an image.
The image is placed on the page number you specified, at the chosen position and size, and a new document is written out. The rest of the file is left as it was, because pages are copied rather than re-rendered, so text elsewhere stays selectable.
Input, output, and the controls
Input: one PDF. Output: signed.pdf, every page of your original with the signature added to the single page you selected. The source file on your device is not modified.
| Control | Options |
|---|---|
| Method | Draw, or type in one of ten styles with a chosen ink colour |
| Page | A whole number within the document's page count |
| Position | Bottom Right (default), Bottom Left, Bottom Center, Top Right, Top Left |
| Size | Small, Medium (default), Large |
Placement is chosen from these fixed positions rather than dragged freely, so the mark lands in a preset corner or along the bottom centre. If a form has its signature box in an unusual place, the available positions may not line up precisely; the three sizes give some control over how much room the mark takes. Because the signature is placed on one page, a document needing initials on every page is not handled in a single pass.
Step by step
Find the page
Count actual pages from the start of the file. Printed page numbers often begin after a cover sheet and will mislead you.
Draw or type
Sign in one continuous motion, ideally on a touchscreen, or type your name and pick a style and ink colour. Then set the position and size.
Generate and check
Download signed.pdf and open it to confirm the placement before sending it to anyone.
Visible mark versus cryptographic signature
Both are called "signing a PDF," which causes a great deal of confusion. They work differently and prove different things.
A visible signature mark, what this tool creates, is artwork on a page. It communicates intent: you looked at the document and put your name on it, and anyone opening the file sees the signature. What it does not do is prove who applied it. There is no identity check, and the same image could be placed on a different document.
A certificate-based digital signature uses cryptography. A digital certificate, issued after some form of identity verification, signs the file's contents mathematically. PDF readers can then check that signature and report who signed and whether a single byte has changed since; that check is what produces the green tick some readers show.
This tool provides the first and not the second. Specifically, it does not verify your identity, attach a certificate, apply a trusted timestamp, create an audit trail of who opened or signed the document, or make tampering detectable.
Whether a visible mark is sufficient depends on the document, the parties, and the rules that apply where you are. That is a question for the organisation requesting the signature, or a qualified adviser, not something a conversion tool can answer. When the answer matters, ask before you sign rather than after.
Privacy and data handling
File contents are processed in browser memory and are not sent to WeConvertFiles for conversion. pdf-lib and the signature fonts are downloaded from third-party CDNs when needed, so the workflow is not described as fully offline.
Zoho PageSense may collect consented site-usage data such as visits, clicks, scrolling, referrer, device information, and conversion events. PageSense is not given the selected PDF contents.
Troubleshooting
The signature appeared on the wrong page
Almost always a numbering mismatch: the number printed on the page differs from its position in the file. Count from page one of the document itself, ignore printed numbering, and generate again.
The page number is rejected
It must be a whole number within the document's page count. Decimals, page ranges, and numbers beyond the last page are not accepted.
The mark overlaps text or misses the form's box
Only five preset positions are available. Try the nearest alternative and adjust the size; small often fits a tight field where medium does not.
My drawn signature looks shaky
Drawing with a mouse is genuinely awkward. Sign on a touchscreen with a finger or stylus if you can, or use a typed style, which stays consistent every time.
The recipient says the signature is not valid
They are likely expecting a certificate-based digital signature, which this does not produce. Ask what they require before sending a replacement.
Frequently asked questions
Can I sign every page of a contract in one go?
No. The signature is placed on the single page you nominate. Initialling every page means repeating the process, feeding the output back in each time, which is workable for a few pages and tedious for many.
Can I move the signature exactly where I want it?
Not freely. Five preset positions are available with no dragging to an arbitrary point. Combined with the three sizes, that usually gets close to a standard signature line, but it will not match every form layout.
Is my typed signature legally the same as my handwritten one?
That is not a question this guide can answer, and it varies by document type and jurisdiction. The tool provides a visible mark with no identity verification behind it. If the answer matters for your document, get advice from someone qualified to give it.
Can someone edit or remove the signature afterward?
The mark is embedded artwork rather than a protected element, so anyone with a PDF editor could alter the file. Nothing in the output makes tampering detectable, which is exactly what certificate-based signing is designed to address.
What is the difference between the drawn and typed options?
A drawn signature looks like your own handwriting and varies slightly each time. A typed one is generated from your name in a chosen style and ink colour, so it is neater and reproducible. Both are placed with a line beneath the mark.
Can I reuse the same signature on other documents?
There is no saved signature library here; you draw or type it each time. A drawn signature will vary slightly on every attempt, which is normal.
Related tools
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Merge PDF
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PDF to PNG
Produce an image of the signed page when someone needs a quick visual confirmation.
Related guides
Merge PDF Guide
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Compress PDF Guide
Create a rasterized PDF copy using selectable JPEG quality levels.
Split PDF Guide
Separate every page of a PDF into individual PDF files bundled in a ZIP.
Sign a PDF without printing it first
Draw or type your mark, place it on the right page, and download signed.pdf with the rest of your document left exactly as it was.