How to remove a signature from a PDF on iPhone

You signed a PDF and it’s wrong. The signature landed on the wrong line, or on page 3 instead of page 1, or you signed the draft instead of the final. Now you want it gone.

Whether that’s a five-second fix or genuinely impossible comes down to one question: is the signature still an annotation sitting on top of the page, or has it been merged into the page itself?

Almost every page on this topic skips that question and sends you straight to a download. Let’s answer it first, because it decides everything that follows.

The ten-second test

Open the PDF in Files, tap the Markup (pencil) icon, then tap directly on the signature.

It selects — handles appear, you can drag it. It’s still an annotation. It comes off cleanly. Jump to the next section.
Nothing happens. It behaves like the printed text around it, because it now is printed text as far as the file is concerned. The signature has been flattened, and it cannot be lifted back out. Skip to “when it’s baked in”.

Do this before you install anything. It’s the difference between a fix and a wasted afternoon.

If it’s still an annotation: remove it free, in Markup

No app required — iOS does this on its own.

Open the PDF in Files (or the Mail attachment — tap it to preview).
Tap the Markup (pencil) icon in the corner.
Tap the signature once. A selection box with handles appears.
Tap Delete in the popup menu — or hit the undo arrow if you added it a moment ago.
Tap Done to save.

That’s the whole job. The signature was never part of the page, so removing it leaves nothing behind.

Two things worth knowing while you’re in there: if the problem is placement rather than the signature itself, you can drag it to the right spot instead of deleting it — and if it’s the wrong size, resizing it is the same gesture. Deleting and starting over is often more work than nudging.

When it’s baked in: the honest answer

If the signature failed the test, here is the truthful version, and it’s not what most results on this query will tell you.

A flattened signature cannot be removed. It isn’t hiding in a layer waiting to be switched off — it was merged into the page’s own content, pixel for pixel, exactly like the document’s text and letterhead. There’s nothing to select because there’s no separate object any more. No iPhone app can undo that, and that includes ours.

So don’t hunt for the app that can. Do this instead:

Go back to the original. The unsigned file almost certainly still exists — in the email that sent it to you, in Files, in your Downloads, in the chat thread. Open that copy, sign it properly, and send the corrected version. This is the fix, and it takes about a minute.

No original? Ask for one. Message the sender: “I signed that in the wrong spot — could you resend the blank copy?” Nobody minds. It’s a far better conversation than the alternative.

What not to do: don’t cover the signature with a white box or an eraser stroke and call it removed. It looks like exactly what it is — a document that’s been painted over — and anyone who prints it, zooms in, or opens it in a different viewer will see the seams. A clean re-signed copy is less work and looks like what it should look like.

If someone else signed it

Different question, and the answer is short: ask them.

If a counterparty signed a document and something needs to change — wrong version, wrong date, wrong name — the move is to request a corrected copy from the person who signed it. Editing another party’s signature out of a document they signed is not a formatting problem, and it isn’t something this guide, or any app, should help with. Get a fresh copy signed instead.

Why the good version never has this problem

Here’s the thing the flatten/remove pair reveals: the signature that’s easy to remove is also the fragile one. An annotation can be dragged off, deleted, or silently dropped by a printer. The signature that’s safe to send is the flattened one — and it’s flattened precisely because it can’t be pulled back out.

You don’t get to have both. What you get to choose is when the door closes.

That’s how Signed is built. You import the PDF and your signature, initials and date stay live, movable objects the entire time you’re working — drag them, resize them, delete them, redo them, as many times as you like. Nothing is committed. Then you tap Finish, and the file it hands you is already flattened, so the recipient gets a signed page that prints correctly and can’t be rearranged.

The editing happens before the export, where editing belongs. Two things worth knowing:

Your signature is saved once and reused, so re-signing a corrected copy is a couple of taps, not a fresh finger-drawing on glass.
The document never leaves your iPhone. Signed is local-first — which is worth weighing against the remove-my-signature websites, where step one is uploading the document you’d rather nobody kept.

One thing this guide doesn’t cover

Removing a signature is a file-editing question — what’s in the PDF, and whether it can be taken out. It says nothing about the document’s standing.

Whether a signature counts for a particular document, whether a corrected copy needs re-signing by everyone, or what a contract requires once it’s been sent, depends on the document, the parties and your jurisdiction — not on the PDF’s internal structure, and not on anything we can tell you. If that’s the actual worry, the answer isn’t an app. See are electronic signatures accepted? for the honest shape of that question.

The short answer

Test first: open in Files → Markup → tap the signature. Selects = removable. Doesn’t = flattened.
Still an annotation? Tap it, tap Delete, tap Done. Free, built into iOS.
Flattened? It can’t be removed. Re-sign a fresh copy of the original — and ask the sender for one if you don’t have it.
Someone else’s signature? Request a corrected copy from them.
Signing regularly? Use a tool where the signature stays movable until you export, so “remove it” is just undo.