How to Edit a Scanned Document on iPhone | OCR Text Fix

Editing scanned document text on an iPhone requires a third-party app with Optical Character Recognition (OCR), like Adobe Scan Premium, because the built-in Files, Notes, and Preview apps treat scans as images and only allow markup.

You scan a contract, a handout, or a printed page, open it on your iPhone to fix a typo, and realize the text won’t let you tap into it. That is not a bug — it is how scans work. The iPhone stores the page as a picture, and pictures don’t have editable letters. The fix is converting that picture back into real, selectable text using a tool called OCR, then editing it. Here is what that actually looks like step by step and which app does the job.

Why Native iOS Apps Can’t Edit Scanned Text

The Scanner built into iOS 13’s Files app and iOS 26’s Preview app captures a high-resolution image of the page. When you view it in Notes, Files, or Preview, it looks like a document, but there is no underlying text data — just pixels. The Markup tools in these apps let you draw, sign, or add new text boxes over the image, but they cannot change a single letter that was already printed on the page.

“Markup” means adding layers on top of a picture, not editing the picture’s content. If you need to correct a misspelled name in a scanned contract, the native tools won’t do it.

The Only Working Route: OCR With Adobe Scan Premium

Optical Character Recognition reads the shapes in the image and converts them into actual text characters. On iPhone, the most direct way to use OCR for editing is through Adobe Scan, but the text-editing feature requires a Premium subscription — the free tier scans and exports PDFs but does not let you rewrite the scanned words.

Editing a scanned document’s text is a two-stage process on every mobile device: first the OCR conversion, then the text edits. Adobe Scan handles both stages in one app for paid subscribers.

Editing Text In Adobe Scan (Premium)

1. Open the Adobe Scan app and tap the document you want to edit on the Home screen.
2. Tap the Edit text button next to the document name, or open the preview and tap Edit text from the bottom toolbar.
3. Wait for the document to become editable — Adobe Scan processes the page using OCR. Do not tap Cancel during this step, or the text layer won’t load.
4. When the text is ready, tap Edit and then tap any word to select, delete, or retype it.
5. Tap the Save icon in the upper-right corner to save your changes.

The app saves a separate copy with _edited added to the file name, leaving your original scan untouched.

What Native iOS Apps Actually Do With Scans

Knowing the limits of each native tool saves time. None of them edit scanned text, but each handles a different task well.

The only native function that approaches OCR is the Live Text feature in iOS 15 and later, which lets you copy text from a photo — but you cannot paste that text back into the scanned image itself. It works for copying an address or a quote, not for editing the document.

For more detail on the limits of iOS’s built-in document handling, Apple’s community discussions confirm that scans are treated as images across all supported apps.

Scan At 300 DPI For Better Results

OCR accuracy depends heavily on scan quality. A blurry or low-resolution scan produces garbled text that takes longer to correct than retyping the page. Aim for 300 dpi when you capture the scan, which is the standard resolution most OCR tools handle best.

Native scanner apps on the iPhone capture at a good default resolution, but if you use a third-party scanner app and have a dpi setting available, set it to 300. A sharp scan means the OCR layer in Adobe Scan or another app needs far fewer manual corrections.

Free Alternatives That Include Light Editing

If the goal is not full retyping but adding a signature, filling in a blank, or writing a note on the page, you likely do not need OCR at all. The Markup tool in iOS handles those tasks without a subscription.

Other apps like SwiftScan AI and My Scanner offer scan-to-PDF and signing tools that overlap with the free Markup set. Their text editing, when available, also requires a paid tier or in-app purchase.

What To Do When The Obvious Fix Doesn’t Work

The most common mistake is opening a scanned PDF in the Files app, tapping the Markup button, and expecting the printed text to become selectable. It will not. The second most common mistake is tapping Cancel in Adobe Scan while the “preparing document” progress bar is running — that cancels the OCR step, and the edit option disappears.

“I saved my scan, opened it in Notes, and I can only draw on it” is a sign the file is still an image-based document. The only path to actual text changes is an OCR-capable app with the editing feature enabled.