How to fix a scanned PDF

When people say they need to "fix a scanned PDF," they usually mean one of three different things:

• correct text inside the document
• add something on top of the pages
• make an image-only scan readable by software first

Those are not the same job, so they should not start with the same tool.

The mistake is to assume that every scanned PDF must begin with OCR. In practice, the best first move is often AI Edit, because many "scanned" PDFs already contain enough text structure to be corrected directly.

Start with AI Edit when the document is already usable

If the PDF already lets software detect words, even imperfectly, AI Edit is usually the fastest path.

That matters because most fixes are content fixes, not archival fixes.

Typical examples:

• fix a misspelled client name in a scanned contract
• rewrite an outdated paragraph in a policy document
• translate a scanned brochure into English
• simplify the wording of a form before sending it again
• clean up a messy passage that came from a low-quality export

In those cases, the goal is not "extract text at any cost." The goal is to change the content of the PDF without rebuilding the whole file somewhere else.

That is where AI Edit works well.

What AI Edit is good at

AI Edit is the right tool when you want to tell the product what to change in plain language.

Examples of realistic instructions:

• "Replace the old company address with the new one everywhere it appears."
• "Rewrite the opening paragraph in a simpler tone."
• "Translate page 2 to English."
• "Correct OCR mistakes in the invoice summary."
• "Change all references from March 2025 to April 2026."

This is the useful part: you are not forced into a full layout rebuild just because the source file began as a scan.

For many business PDFs, that is enough.

Why AI Edit should come first

Starting with AI Edit is pragmatic for two reasons.

First, it tests whether the document is already workable.

A lot of files described as "scanned PDFs" are actually:

• hybrid PDFs with a hidden text layer
• old office exports that look like scans
• scanned files that were OCRed earlier
• mixed documents where only part of the file is image-based

Second, it keeps the workflow short.

If the text can already be targeted, there is no reason to add an OCR step before every correction. OCR is useful, but it is still an extra transformation step. If you can fix the document directly, that is usually the cleaner path.

Use Manual Edit for visual additions, not for core text correction

Manual Edit is useful, but it solves a different problem.

Use it when you want to place something visually on top of the PDF, for example:

• a signature
• a quick drawing
• a highlight
• an annotation
• a handwritten mark or visual pointer

That makes it valuable for approval flows or quick markups.

But if your real goal is:

• rewrite a sentence
• correct wording
• update names, dates, or clauses
• translate the document

then Manual Edit is usually not the main tool. In that case, AI Edit is the better fit.

Use PDF OCR only when the scan is truly image-only

PDF OCR should be the fallback when AI Edit cannot reliably act on the document because the scan is essentially just pictures of pages.

That usually shows up in a few obvious ways:

• text cannot be selected
• copy and paste returns nothing useful
• search does not find visible words
• the file behaves like one large image per page

At that point, OCR becomes necessary because the system first needs a usable text layer.

The role of PDF OCR here is specific:

• it makes the scan searchable
• it makes the text easier to detect
• it prepares the file for better downstream editing

So the right mental model is:

1. try AI Edit first
2. use Manual Edit only if you need to add a signature, drawing, or annotation
3. use PDF OCR if the scan is too image-based to edit properly

A simple rule of thumb

If you want to change what the document says, start with AI Edit.

If you want to draw or add something on top of the PDF, use Manual Edit.

If the file is basically an image with no usable text layer, use PDF OCR and then come back to editing.

That order is usually faster than treating every scanned PDF like a recovery project.