Creating an electronic signature is one of those small adult skills nobody teaches but everybody needs. The first time someone asks you to "sign and return" a PDF, you have a choice: print it, sign in pen, scan it back (10-15 minutes and a printer), or use an electronic signature (about 30 seconds, no printer needed). Here's how to do the second.
Pick the right kind of signature
Before reaching for a tool, choose what kind of signature you actually need. There are three:
- A scribbled signature drawn with your mouse, finger, or stylus. Looks like a real signature; legally counts as an electronic signature in most jurisdictions for routine documents.
- A typed signature in a script font. Legally fine for most casual contexts; often accepted on click-through agreements and online forms.
- A digital signature with a cryptographic certificate. Strongest legal weight, often required for high-value contracts, government filings, or regulated industries.
For 95% of cases — signing a contract, an HR form, a school document — a scribbled signature is fine. See digital signatures vs electronic signatures for when you need more.
Method 1: Browser-based PDF signing
The fastest path: open the PDF in a browser tool that supports signatures. Docento.app handles this in your browser without uploading the file:
- Open the PDF.
- Click "Sign."
- Draw your signature with finger, stylus, or mouse — or upload a saved signature image — or type your name in a script font.
- Drop the signature on the right place on the document.
- Save.
The whole process takes under a minute. The signed PDF is yours; nothing was uploaded anywhere.
Method 2: Use your phone
If you don't have a stylus and your laptop trackpad signature looks shaky, your phone is the answer:
- iPhone: open the PDF in Files, Mail, or any annotation app. Tap markup, tap the signature button, draw your signature with finger or Apple Pencil. iOS saves the signature for reuse.
- Android: open the PDF in Google Drive, Adobe Acrobat Reader, or Xodo. Most have a "Signature" or "Add signature" option.
Once you have a signature saved on your phone, signing future documents is two taps.
Method 3: Sign on paper, photograph, embed
A high-fidelity signature for important documents:
- Sign your name on a clean white piece of paper with a black pen.
- Photograph it under good light.
- Open the photo, crop tightly, optionally remove the background (apps like Background Eraser do this in seconds; Photoshop's "Magic Wand" does it manually).
- Save the result as a PNG with transparent background.
- Drop into PDFs as needed.
This produces a signature that looks like a real ink signature on paper. Worth doing once, reusable forever.
Method 4: Generate a typed signature
For casual contexts (web forms, simple internal documents), a typed signature in a script font is fine:
- In Word: type your name, set the font to a script style (Brush Script, Edwardian Script, etc.).
- Export as image or PDF.
- Embed in your PDF.
Looks less personal than a handwritten signature but is fast and consistent.
Method 5: Dedicated e-signature service
For business contracts, especially with external counterparties:
- DocuSign, Adobe Sign, Dropbox Sign, HelloSign: full e-signature platforms. Send documents for signature, set signing order, capture audit trails.
- eIDAS-compliant providers (Yousign, Skribble, etc.) for documents requiring a Qualified Electronic Signature in the EU.
These add features beyond basic signing — identity verification, audit trails, multi-party workflows, automated reminders. Worth paying for when many people need to sign or when legal weight matters.
For more on the legal landscape, see e-signature laws around the world.
Where on the page should the signature go?
Most documents have a designated signature line. Place your signature so it:
- Sits on or just above the signature line, with the bottom of the signature touching the line.
- Doesn't overlap the printed name below the line — leave a gap.
- Is sized appropriately — too small looks tentative, too large looks aggressive. Roughly the height of three lines of body text is a sensible default.
- Includes a date if the form has a date field.
If the document doesn't have a clear signature line, sign at the bottom right after a "Signed:" label that you add.
Should you flatten after signing?
Once you've added a signature to a PDF, you have two options:
- Save as is: the signature is a separate object that someone could move or delete in another tool.
- Flatten the document: the signature becomes part of the page, indistinguishable from baked-in content.
For documents you're sending externally, flatten. The signature is now permanent. See flattening a PDF.
For documents that may need re-editing, don't flatten yet — flatten only the final version.
Saving a signature for reuse
Make signing future documents fast by saving your signature once:
- iPhone Markup: signatures are saved automatically and available in any document.
- macOS Preview: Tools → Annotate → Signature — save once, reuse anywhere.
- Adobe Acrobat Reader: saves signatures in your profile.
- Browser tools: most save signatures in browser local storage.
Be careful where the signature is saved. A saved signature on a shared computer is a small but real risk.
Privacy considerations
A signature is a piece of personal identification:
- Don't email a high-resolution image of your signature to people you don't trust.
- Watch out for tools that upload your signature to a cloud server. For sensitive documents, use a tool that signs locally — see privacy in browser PDF editing.
- Don't sign blank documents that someone might fill in later. Always sign a complete, locked document.
Verifying a received signature
If someone sends you a signed PDF and you need to verify it:
- Check the signature visually. Does it match what you expect from the signer?
- Check the signing certificate if it's a digital signature. Most readers show a green checkmark when verified.
- Check the audit trail if it came from an e-signature service. Most include a "certificate of completion" with timestamps and identity verification.
- For high-value contracts, escrow or notarisation may be appropriate.
Conclusion
Creating an electronic signature is a 30-second one-time setup followed by 10-second signing for every future document. Use a browser tool for one-off signing without uploads — Docento.app handles this without sending the PDF anywhere. Save your signature for reuse. Flatten before sending externally. For broader context, see signing a PDF online and is it legal to sign documents electronically.