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Scan a Document to PDF | MiOffice AI

Turn a document image into a PDF with Document Scanner. Choose an Enhancement option and inspect the finished file against your source.

Input formats
image/*
Output options
PDF
Access
Guest / Sign-in

Overview

Capture a paper page or import existing photos, review the page order, and export a PDF. Inspect the saved pages for crop, perspective and small text. Sign in when the workspace requests access to export.

Document Scanner accepts image/* inputs and has PDF as its configured output. Its registered purpose includes automatic edge detection, perspective correction, and enhancement. The Enhancement setting defaults to auto, but the documented effect doesn't specify what its individual values change. Inspect the resulting PDF rather than assuming a particular crop, correction, or text-recognition result.

When to use

  • Use Document Scanner when you have a document image and want a PDF. Automatic edge detection and perspective correction are part of its registered purpose, but inspect the output to check its crop and page appearance.
  • If you need a searchable PDF, note that OCR or a searchable text layer isn't specified for this tool. Check the resulting file before relying on text search.

Explore the tool directory for related tasks.

How to use

  1. Open Document Scanner. Choose camera capture or Upload images, then review the access information before export.

  2. Provide an image/* input and review the restrictions shown in the workspace. The registered setting is Enhancement. Its available values are auto, grayscale, blackWhite, color, and whiteboard; auto is the default. The documented effect doesn't explain what each value changes, so treat your selection as an option to inspect, not a promised correction. The live workflow also describes capturing a page with Open Camera on a phone or Use Webcam on desktop after allowing camera access. AUTO waits for a stable detected page; switch to MANUAL and use the shutter if you want to choose the capture moment. After a capture, continue to Review. If you already have photos, choose Upload images. The scanner accepts images your browser can open, not PDF files. If camera access is denied, change the browser permission or import photos instead. If a photo won't open, try a JPEG or PNG copy.

  3. In Review, check the pages and their order. If the controls are available, choose + Add More to add photos, remove unwanted pages, and drag multi-page thumbnails into reading order. The live workflow notes that an imported thumbnail shows the source photo, so check the exported PDF for the final crop and enhancement. Compare the result with the original when colored stamps, signatures, or diagrams matter. There is no manual corner adjustment in the documented review screen. If the final crop loses an edge or text is too small, use a clearer, more closely framed photo and try again.

  4. Use the workspace action and inspect the result. The configured output is PDF. If a downloadable PDF is offered, check that the pages you need are present, confirm their order, and review the smallest text at the size you intend to use. Compare important marks or details with the source image. Save the file before using Start Over or closing the tab.

Settings reference

SettingOptionsDefault
Enhancementauto grayscale blackWhite color whiteboardauto

Formats & limits

DetailRequirement
Input formatsimage/*
Output formatsPDF

Access & cost

DetailRequirement
On-deviceGuest access
Online processingSign-in required; Internet connection required

Examples & use cases

An office administrator preparing a memo image for sharing.

Prepare a photographed memo

The memo has small print, so the administrator wants a PDF and needs to check the fine text before sharing it.

image/* to PDF

Enhancement:
auto
  1. Use enhance:auto, the registered default, as a starting choice; the documented effect doesn't establish that another value will make small print clearer.
  2. Inspect the PDF at a useful viewing size and check that the page edges and smallest text are visible.

Expected outcome

A PDF made from the supplied memo image. Check that the page is complete and its small print is readable for the intended use.

A project coordinator preparing a diagram image for reference.

Check a marked-up diagram

The image includes colored annotations that matter for reviewing the diagram. The coordinator wants a PDF copy and plans to compare those marks with the source.

image/* to PDF

Enhancement:
color
  1. Choose enhance:color because color is a registered Enhancement value and the source has colored marks. Its specific effect isn't documented, so treat this as a choice to review rather than a promise that the marks will be retained.
  2. Compare the PDF with the original image and check that the annotations needed for reference are visible.

Expected outcome

A PDF output from the supplied diagram image. Compare the details you need with the original before using it as a reference.

A meeting organizer keeping a whiteboard image for later review.

Keep a photographed whiteboard page

The organizer wants a PDF copy of a photographed board and needs to check the page edges and writing in the saved file.

image/* to PDF

Enhancement:
whiteboard
  1. Choose enhance:whiteboard because whiteboard is a registered Enhancement value and the source is a whiteboard image. The specific effect isn't documented, so inspect the exported result.
  2. Check the PDF's page edges and the writing you need to read.

Expected outcome

A PDF made from the supplied whiteboard image. Check that it contains the writing you need and that it's legible for your intended use.

More ways to use it

  • A team member preparing a document image to share.: They need a PDF version of an image and want to check that the finished page is complete and legible before sharing it. A configured PDF output from an image input. Inspect the file to confirm it suits the intended use. Enhancement: auto.
  • Someone keeping an annotated document image for reference.: They want a PDF copy of a page with marks or a diagram that matter, and need to compare those details with the source. A PDF output to compare with the source image. Check the details you need; the setting's specific effect isn't documented. Enhancement: color.

Troubleshooting

An image input doesn't appear to be accepted.

Try this: Review the workspace's visible input restrictions and provide an image/* input accepted there. If the image won't open in your browser, try a JPEG or PNG copy.

What to expect: The workspace can assess the image input against the restrictions shown there. The declared format doesn't confirm support for every encoding or bit depth.

A detail in the resulting PDF is missing or hard to see.

Try this: Inspect the offered PDF and compare the relevant area with the original image. If the crop loses an edge or the text is too small, use a clearer, more closely framed photo and try again.

What to expect: The output lets you check whether the detail is present and clear enough for your purpose. The registered enhancement purpose doesn't guarantee that a particular detail will be preserved.

Privacy

Online processing uploads files. Completed results may remain available for later download. See Privacy Policy for current file-handling and retention details. Check the processing mode before starting.

Frequently asked questions

Can I scan without a camera?

Yes. Choose Upload images to provide photos already on your device. The registered input is image/*, and image decoding depends on your browser. If a photo won't open, try a JPEG or PNG copy.

Can I search the words in the PDF?

OCR or a searchable text layer isn't specified for Document Scanner. The configured output is PDF; check the file if you need to confirm whether its text is searchable.

Do I need an account to download?

Yes. The live scanner instructions say downloading requires sign-in. Online processing also requires sign-in and an internet connection. Check the access information shown in the workspace before you begin.

Why is my scan readable on screen but poor when printed?

A small preview can hide blur, shadows, or insufficient detail. Inspect the PDF at a larger scale and check fine text before exporting. If the original image is unclear, capture it again with steadier framing and better light.

Can I import photos of paper or whiteboards?

Yes. The registered input is image/*, and the live workflow describes importing photos with Upload images. Check that your browser can open the image; PDF files aren't accepted as scanner inputs.

How can I make a scanned PDF higher quality?

Enhancement is a registered control with auto as its default. Its available values are auto, grayscale, blackWhite, color, and whiteboard, but the specific effects aren't documented. Inspect the resulting PDF against the source rather than assuming a setting will fix blur or preserve every detail.

How do I convert an image to PDF?

Open Document Scanner in its linked workspace, provide an image/* input, and use the workspace action. The configured output is PDF; inspect the offered file before using it.

Does the scanner process files on my device or upload them?

Capture and review use your browser. Check the workspace processing and export access before continuing, and see the privacy policy for uploaded-file handling.

Is the online document scanner safe for sensitive documents?

Online processing uploads files. Completed results may remain available for later download. See Privacy Policy for current file-handling and retention details. Check the processing mode before starting.

Can I scan multiple pages into one PDF?

The live workflow describes reviewing multiple page thumbnails and choosing an export, while the registered facts confirm image/* inputs and an PDF output. Check the resulting PDF to confirm which pages it contains and their order.

Which file formats can Document Scanner export?

The configured output is PDF. The registry doesn't confirm other output formats for this tool.

How do I crop, straighten, or correct perspective on a document?

Automatic edge detection and perspective correction are part of the registered purpose. Inspect the resulting PDF's edges and perspective; the registered controls don't specify a manual crop or corner-adjustment option.