How do I sign a PDF on my phone, Android or iPhone, without an app?
Open Sealique in the phone browser, choose Quick Sign, draw your signature with a finger and press Sign & seal: the sealed PDF carries a PAdES signature and QR code.
Most signatures in East Africa happen on a phone, often on a slow connection and often on a file that arrived by WhatsApp. Quick Sign is built for that: the PDF renders in the browser, the signature is drawn with a finger, and the sealed file comes back in seconds. Nothing is installed, and the app can be added to the home screen from the browser menu.
Open Quick Sign Create an account Verify a signed document
Key facts
- Quick Sign works in the phone browser on Android and iPhone; there is no app to install and the page can be pinned to the home screen.
- Signing is included with a Sealique account; the file is sealed on the server, so the phone only uploads the PDF and downloads the result.
- A signature can be drawn with a finger, typed in a signature style, or taken from a photo whose background is removed automatically.
- The sealed PDF carries a PAdES digital signature, a verification ID and a QR code; it can be shared straight back through WhatsApp or e-mail.
- A document that arrived as a photo can be turned into a PDF first with the image to PDF tool, which needs no account.
How do I sign a PDF that arrived on WhatsApp?
Open the attachment in WhatsApp, tap Share or Open with and choose the browser, or save the file first. Open Sealique, choose Quick Sign and pick the saved file. Sign, seal, then tap Download and share the sealed PDF back into the chat. The other person can scan the QR code in the signature block to verify it.
Does it work on a slow connection?
Yes. The pages are rendered in the browser from the uploaded PDF, the signature image is a few kilobytes, and the sealed file is produced on the server, so a 2G or 3G connection is enough. The installable app keeps the interface cached so it opens quickly next time.
Can I sign a scanned or photographed document?
Yes. Use the image to PDF tool to turn the photo or scan into a PDF, then open it in Quick Sign. Tall photos of several pages can be cut into separate pages automatically.
What if several people have to sign on their phones?
Create the document under Documents instead of Quick Sign, add each signer's name and e-mail and send. Each signer gets a personal link that opens on any phone, needs no account, and the final PDF carries every signature. You can follow who has signed and send reminders.
Sign a PDF on your phone, step by step
Open Quick Sign on your phone
Sign in (no card is needed to create an account), tap Quick Sign and choose the PDF from your phone or your library.
Draw your signature
Draw it with a finger, type your name or upload a photo; tap the page where it goes.
Sign & seal and share
Press Sign & seal, then download or share the sealed PDF; anyone can verify it by scanning the QR code.
Sign a PDF on your phone is included with a Sealique account; the processing happens in your browser and on our servers, nothing is shared with third parties.
What Sign a PDF on your phone includes
- No app to install; add Sealique to the home screen from the browser
- Draw with a finger, type, or upload a photo of your signature
- A page mark with your symbol on every page
- Sealed PDF with PAdES signature, verification ID and QR code
- Share the sealed file back through WhatsApp or e-mail
Questions people ask
Can I sign a PDF on my phone without an account?
If someone sent you a signing link, yes: open it and sign, no account needed. To sign your own PDF, create an account first.
Is there an Android or iPhone app?
Sealique is a web app: open it in the browser and add it to the home screen; it then opens like an installed app.
How do I sign a PDF attached to a WhatsApp message?
Save or open the attachment in the browser, upload it in Quick Sign, sign and seal, then share the sealed PDF back into the chat.
Does my signature photo need a white background?
No. The background is removed automatically when you upload a photo of your signature; you can also use the browser background remover first.
How does the other person check my phone signature?
They scan the QR code printed in the signature block or type the verification ID on the public verification page.