Sign & Fill PDFs on Any Device: iPhone, Android, Mac, Windows, Chromebook — FAQ

To sign and fill PDFs on any device, open the PDF in PDFYay at /sign, add your signature or text fields, then download the finished file. PDFYay is free, needs no account, and keeps the PDF inside your browser, so nothing is uploaded to a server.

Device or place	Fastest free method	What to watch
iPhone or iPad	Safari + PDFYay	Use pinch zoom for small signature lines
Android	Chrome + PDFYay	Pick the file from Downloads or Files
Mac or Windows	Browser + PDFYay	No Adobe account is required
Chromebook	Chrome + PDFYay	Download from Drive first if needed
Gmail or Drive	Download, sign, reattach	Avoid converting PDFs to Google Docs

Want the full cross-device walkthrough? Start with the hub guide to signing a PDF on any device. If you need steps for one device, PDFYay has guides for iPhone, Android, Mac, and Windows.

How do I sign a PDF on iPhone for free?

How do I sign a PDF on iPhone for free? Open PDFYay in Safari, choose the PDF, tap “Add Signature,” draw with your finger, place the signature, and download the signed PDF. PDFYay is free, requires no signup, and keeps the file inside your browser instead of uploading it.

1. Open Safari on your iPhone and go to /sign.
2. Tap Select PDF and choose the file from Files, Downloads, iCloud Drive, or a recent attachment.
3. Tap Add Signature; the signature box opens over the document.
4. Draw with your finger, then tap Done.
5. Drag the signature to the line, resize it with the corner handle, and tap Download.

When I tested this on iPhone, the PDF preview showed up the second I picked the file, and the signature stayed movable right up to download. Line too small? Pinch to zoom before you drop the signature in.

How do I sign a PDF on Android for free?

How do I sign a PDF on Android for free? Open Chrome, visit PDFYay at /sign, select your PDF, tap “Add Signature,” draw or type your signature, place it, and download. PDFYay works without an Android app, account, watermark, or upload, so the document stays local in your browser.

1. Open Chrome and go to /sign.
2. Tap Select PDF and pick the file from Downloads, Files, Google Drive, or Recents.
3. Tap Add Signature and draw with your finger.
4. Move the signature into the required field.
5. Tap Download to save the signed PDF.

On Android, the file picker often mixes cloud and local folders in one list. Once you download, look in the notification tray or the Downloads app for the finished file.

How do I sign a PDF on a Mac without Adobe?

How do I sign a PDF on a Mac without Adobe? Use PDFYay in Safari, Chrome, or Firefox, select the PDF, add your signature, place it on the page, and download the signed copy. PDFYay avoids Adobe installation, subscriptions, and signups while keeping the document inside the browser.

1. Open /sign on your Mac.
2. Click Select PDF and choose the file from Finder.
3. Click Add Signature and draw with a trackpad or mouse.
4. Use Add Text for dates, names, initials, or check-style notes.
5. Click Download when the document looks right.

macOS Preview can sign PDFs too. PDFYay earns its place when you want the same steps on Mac, iPhone, Windows, and Chromebook, and it never sends the PDF off to an online account.

How do I sign a PDF on Windows for free?

How do I sign a PDF on Windows for free? Open PDFYay in Edge, Chrome, or Firefox, select your PDF, use “Add Signature,” position it on the signature line, and download the result. PDFYay is free and does not require Adobe Acrobat, Microsoft login, browser extensions, or file uploads.

1. Open Edge, Chrome, or Firefox and visit /sign.
2. Click Select PDF and choose your document.
3. Click Add Signature and draw or type your signature.
4. Drag the signature onto the right page location.
5. Use Add Text for dates, printed names, or form answers.
6. Click Download to save the signed PDF.

The finished file lands in your browser’s usual download bar or folder. If Windows pops the original PDF open afterward, check the filename and timestamp so you know you grabbed the signed copy.

How do I sign a PDF on a Chromebook?

How do I sign a PDF on a Chromebook? Open Chrome, go to PDFYay at /sign, choose the PDF from Downloads or Google Drive, add your signature, place it on the page, and download the completed file. PDFYay needs no Chrome extension and works inside the Chromebook browser.

1. Save the PDF to Downloads or make it available from Google Drive.
2. Open /sign in Chrome.
3. Click Select PDF and pick the file.
4. Click Add Signature and draw with the trackpad, mouse, touchscreen, or stylus.
5. Place the signature, add text if needed, and click Download.

Chromebooks usually preview PDFs right in Chrome, but a preview isn’t a signature. Use the downloaded signed PDF when you reply, upload, or turn in the form.

How do I sign a PDF in Gmail?

How do I sign a PDF in Gmail? Download the Gmail attachment, open PDFYay at /sign, select the downloaded PDF, add your signature and text, download the signed version, then attach that new file to your reply. Gmail can preview PDF attachments, but a PDF editor gives cleaner placement and download control.

1. Open the email in Gmail.
2. Click or tap Download on the PDF attachment.
3. Go to /sign and choose the downloaded PDF.
4. Use Add Signature and Add Text to complete the document.
5. Click Download, return to Gmail, and attach the signed file.

Don’t reply with the original attachment by mistake. I rename the finished file with “signed” before I send it, which makes the right copy easy to spot.

How do I sign a PDF in Google Docs or Drive?

How do I sign a PDF in Google Docs or Drive? Download the PDF from Google Drive, open PDFYay at /sign, add the signature or text, download the signed copy, and upload it back to Drive if needed. Avoid converting the PDF into Google Docs because form spacing and page layout can shift.

1. In Google Drive, select the PDF and choose Download.
2. Open /sign in your browser.
3. Click Select PDF and choose the downloaded file.
4. Add the signature, date, initials, or form text.
5. Download the completed PDF and upload it back to Drive.

Drive is great for storage and sharing. It’s a poor place to keep exact PDF formatting once a file gets converted, though. Leave the file as a PDF and the original layout stays put.

How do I sign a PDF on an iPad with my finger?

How do I sign a PDF on an iPad with my finger? Open Safari, go to PDFYay at /sign, select the PDF, tap “Add Signature,” draw directly on the screen, place the signature, and download the signed PDF. A finger works well, and Apple Pencil works if you want a thinner line.

Useful iPad signing tips:

• Rotate to landscape for wider signature space.
• Pinch zoom before drawing in a small box.
• Rest your palm away from the signature pad.
• Redraw the signature if the first stroke looks shaky.
• Resize the placed signature from the corner handle.
• Add the date with Add Text instead of handwriting it.
• Download before closing the Safari tab.

The bigger iPad screen makes placing a signature easier than it is on most phones. In PDFYay the signature stays draggable after you draw it, so you can nudge it into place before saving.

Do I need an app to sign a PDF on my phone?

Do I need an app to sign a PDF on my phone? No, a browser-based PDF signer like PDFYay at /sign lets you sign and fill PDFs from Safari or Chrome without installing an app. That is useful when you want a quick signature, no account, no subscription, and no file upload.

A phone browser can handle the full signing flow:

• Open the PDF from Files, Downloads, Gmail, or Drive.
• Add a drawn or typed signature.
• Add text for names, dates, and addresses.
• Move and resize items by touch.
• Download the finished PDF.
• Attach the new file to email or forms.

For U.S. electronic signatures, the federal ESIGN Act, 15 U.S.C. § 7001, says a signature generally cannot be denied legal effect solely because it is electronic. Some documents carry special rules, so check the recipient’s requirements for court forms, wills, or notarized documents.

How do I fill out a fillable PDF on a phone?

How do I fill out a fillable PDF on a phone? Open PDFYay at /sign, select the PDF, tap the page where an answer belongs, use “Add Text” for each field, add a signature if required, and download the completed PDF. Pinch zoom makes small fields easier to hit on iPhone or Android.

1. Open /sign in Safari or Chrome.
2. Tap Select PDF and choose the form.
3. Tap Add Text for each name, date, address, amount, or short answer.
4. Drag each text box into the correct field.
5. Use Add Signature for the signature line.
6. Download the finished PDF.

Some PDFs come with built-in fillable fields. Others are just scanned pages. PDFYay’s text boxes work on both, since you drop the text wherever the form needs it.