I just signed a PDF on my phone and now it’s locked - I can’t fix a typo I noticed. Is there any way to unlock it after signing, or am I stuck?
Honestly, once it’s locked after signing you usually can’t unlock it, that’s kind of the point of the signature. If you still have the unsigned original, fix the typo there and sign again. Otherwise you can print it to a new PDF to get an editable copy, but the signature won’t validate anymore.
@reid21 Agreed, fix the typo on the unsigned original and re-sign. Printing to PDF flattened it on my old laptop too so the signature stopped validating, not sure if it’s the same on Mac.
Once a PDF is digitally signed, it is usually locked for good to prevent tampering. I learnt this the hard way after locking an invoice for my market stall with a glaring typo. My tip is to always keep an unsigned master copy of your document before you add your signature. Avoid signing the only version of your file, as you will just have to start over.
Had the same thing last month, unfortunately once you sign it the document is meant to be locked so edits can’t slip through unnoticed. The only real fix is going back to the original unsigned file, correcting the typo there, then signing again. Learned this the hard way after trying to edit a signed contract and realizing it was final by design.
I had this happen last month with a patient form. Signing locks the file to prevent tampering, but what worked for me was using PDFcap to unlock the file and remove the restrictions. You will be able to edit the typo, though you’ll need to sign it again afterwards.
@Finlay.Wilson That may remove editing restrictions, but changing a cryptographically signed PDF will invalidate the signature. I’d keep the signed file untouched, correct the unsigned original if available, and sign the corrected version again.
A signature normally locks the document so later edits would invalidate it. What I do is reopen the original unsigned copy, fix the typo, then sign a fresh copy. If the phone app only saved the signed version, check its recent files or cloud folder for the original; otherwise ask the sender to resend it.
Honestly, signed PDFs usually lock on purpose to protect the signature. If you have Acrobat you can sometimes remove your own signature with the certificate, fix the typo, then re-sign. Otherwise printing it back to PDF gives you an editable copy, though you’ll lose the original signature.
@evelyn2008 The cloud folder tip is what saves me. I check the phone app’s recent files first, since my scanner app keeps an untouched copy there, then fix and re-sign from that. If it’s gone, asking the sender for a resend beats wrestling with a locked file.
first thing, do you still have the original unsigned pdf? signing usually locks it so i just edit the old copy and sign a new one. not sure if it’s the same on whatever app you used on your phone.
Honestly, once it’s signed the file is locked by design, that’s the whole point of a signature. What I tell people at work: go back to the original, fix the typo, then sign again. To be fair, if it’s just a signature field and not a certificate signature, Acrobat can clear your own signature from the Sign menu. Editing anyway will just mark the signature invalid.