How to Scan Multiple Pages Into One PDF on Your Phone

The portal wants "a single PDF containing all documents", and you have an ID card, a utility bill, a two-page employment letter and a certificate. All on paper, or as loose photos in your camera roll. On top of that, the form only accepts a file of a few megabytes at most.

You can sort it out with your phone in a short while, as long as you do things in the right order. This guide walks through the whole method: prepare, scan, combine, order, check and fit the size limit.

Before you start: read what the application asks for

Ten seconds of reading saves you from redoing everything. Look in the portal's instructions for:

• One file or one per document. Some portals have a field for each item; others have a single field for everything.
• The order. Many applications say what order the documents should go in. If they do, that order wins.
• The size limit and format. Write down the exact limit (for example "2 MB maximum" or "PDF up to 5 MB"). If it isn't stated anywhere, aim for a light file anyway: forms fail more often with big uploads.
• Both sides. For ID documents they almost always want front and back.

Make a list of the documents in the order they'll go. That list is your guide for the rest of the process.

Step 1: set up

The quality of the PDF is decided when you take the photo. No tool fully fixes a dark or shaky picture.

• Even light. Near a window during the day is ideal. Avoid light coming from behind you, because your shadow lands on the page.
• No direct flash on glossy paper or laminated cards: it leaves a white glare that hides details.
• A dark, plain background. A dark table or a black folder makes the edges of a white page stand out, which makes cropping easier.
• Flat pages. If the paper was folded, smooth it with your hand or put something heavy on it for a few minutes.

Step 2: scan every page in one session

Open Scan to PDF in your phone's browser. Nothing to install. Allow camera access and tap Capture page for each sheet, following your list. If a document has two sides, capture the front and then right away the back.

Then go through each page:

1. Drag the four corners to the edges of the sheet. The tool straightens the image even if the photo was a bit tilted, and removes the table from the background.
2. Choose a filter for each page. Black & white for printed text; Grayscale if there are stamps or faint signatures that could disappear; Original for documents where color matters or that include a photo, like an ID card.
3. Rotate any page that came out sideways.
4. Remove any shaky shot and capture it again.

Finally, choose the page size. A4 is standard in most countries; Letter is the norm in the US and Canada; "Same as photo" keeps the image's shape with no borders, which works well for small items like a card.

The result is one single PDF with every page in the order you captured them.

If the photos are already in your gallery

No need to retake them. In Scan to PDF, tap Choose photos and follow the same crop and filter steps. If the photos are already well framed and you just want to put them together, JPG to PDF is more direct: pick them all, order them, set page size and margin, and get one PDF. It also accepts PNG, WEBP and other formats.

Step 3: add the documents that are already PDFs

Some of your documents are probably PDFs already: a letter someone emailed you, a certificate downloaded from an official site. Don't print them just to scan them: you'd lose quality and gain weight.

Use Merge PDF: add your scanned PDF plus the PDFs you already had, put them in the order of your list and download one file. If any of them has a password, remove it first with Unlock PDF.

Step 4: check the order page by page

Before going further, flip through the whole PDF. This is when you catch:

• a page that's there twice because you captured it twice,
• a back side that ended up before its front,
• a page upside down,
• a missing sheet.

With Organize PDF you see every page as a thumbnail, drag pages into place, rotate the upside-down one and delete the extra, without starting over. Pages are copied without recompression, so you lose no quality in this step.

Step 5: make sure it's readable

Open the PDF and zoom in on what a reviewer will want to read: ID numbers, dates, amounts, names, stamps and signatures. If something isn't readable on your screen, it won't be on theirs either. Rescan that specific page and swap it in with Organize PDF or Merge PDF.

An application rejected as "illegible" usually costs far more time than retaking one photo.

Step 6: fit the size limit

With several scanned pages, the PDF can easily go over the portal's limit. Run it through Compress PDF:

• If there's no stated limit, use the Recommended level: the file gets much smaller and documents stay readable.
• If there is a limit, use target-size mode and type that number, leaving a small margin. For the common 2 MB case there's a shortcut: Compress PDF to 2 MB.

After compressing, repeat the zoom test. If the limit is too tight for the number of pages and the text turns blurry, check whether the portal allows several files: two readable parts are worth more than one illegible one.

Step 7: give it a clear name

The file comes out with a generic name. Before uploading, rename it to something that identifies you and the content, for example your surname and the type of application. If the portal specifies a naming rule, follow it. Avoid unusual symbols in the name: some forms reject them.

Common mistakes that get files rejected

• Uploading loose photos when a PDF was required.
• Missing the back of an ID document.
• Cropped documents: the photo misses an edge and a detail is lost.
• Pages sideways or upside down.
• Shadows or glare over important numbers.
• Going over the limit by a few KB.
• Over-compressing until it can't be read.

Your documents stay on your phone

Scanning, merging, organizing and compressing all happen inside the browser. Your photos and the PDF aren't sent to any server, which matters because what people scan for applications are IDs, bills and certificates full of personal data. No account or email needed.

Frequently asked questions

Can I mix new photos with ones I already had? Yes. In Scan to PDF you can capture with the camera and also choose photos from your gallery in the same session.

How many pages can I scan into one PDF? There's no fixed limit; the ceiling is your phone's memory. With many pages, compress at the end.

Which filter should I use for an ID card? Original or Grayscale, so the photo and fine details come through. Black & white can wipe out parts of the design.

Does the text need to be copyable? For most applications, no. If they ask for it, run OCR PDF at the end.

The portal rejects the file even though it's under the limit. What now? Check that the file really is a .pdf, that it has no password and that the name has no unusual symbols. If it still fails, try another browser or a computer.