How to Combine Multiple Images Into One PDF (JPG, PNG, Screenshots)

You have a folder of phone photos, a stack of receipt screenshots, or three scans your printer saved as separate JPGs — and the form you're filling out only accepts a single PDF. The fastest fix is a browser tool that bundles the images and outputs one file.

The Quick Version

Open the Image to PDF tool, drop your JPG/PNG files onto the upload area, drag them into the order you want, and click convert. You get a single PDF back in a few seconds. The whole conversion runs locally in your browser — no upload, no account, no watermark.

When You'd Need This

These are the situations that send people searching for "combine images into one pdf":

• Expense reports. A month of receipts, all phone photos. Most accounting systems want one PDF, not 23 attachments.
• Insurance claims. Damage photos, police report, repair estimates — all images, all required as a single submission.
• Job applications. Portfolio screenshots, certificates, transcripts. Some portals reject multi-file uploads.
• Tax filings. 1099 photos, receipts, donation confirmations consolidated into one document for your CPA.
• Legal evidence. A series of text-message screenshots that need to be one exhibit, not 12.
• Scanner output. Older flatbed scanners save each page as a separate JPG — combining them back into one PDF is the missing step.

Step-by-Step

1. Open the Image to PDF tool.
2. Drop your images onto the upload area. JPG and PNG both work. You can drag a whole folder or Cmd/Ctrl + click to select multiple files at once.
3. Reorder them. The default order matches how the browser read the files, which is usually alphabetical, not the order you want. Drag thumbnails to fix the sequence — the first image becomes page 1, the second becomes page 2, and so on.
4. Convert. Click the button. Processing runs in your browser, so the time depends on how many images and how big they are. A dozen phone photos finishes in under five seconds.
5. Download the combined PDF.

That's it. No "free trial" countdown, no email gate, no watermark across every page.

The File Formats That Work

The tool accepts JPG/JPEG and PNG. Those cover almost every image you'd realistically be combining:

• iPhone and Android photos export as JPG by default
• Screenshots on Windows, Mac, and Chromebook all save as PNG
• Scanned documents from most scanner apps come out as JPG or PDF
• Camera and DSLR photos are JPG unless you've changed the setting

If you have HEIC files (iPhone's newer default), open them in Preview or Photos first and export as JPG, then run them through the tool. HEIC isn't universally supported by browsers yet, so converting to JPG first avoids surprises.

For WebP or other less common formats, the easiest path is to right-click → "Save as JPG" in your browser, or use a free converter, then bring the JPGs into the tool.

Page Order Matters — Especially for Screenshots

Phone photo libraries and screenshot folders almost never list files in the order you took them. They sort alphabetically by filename, and IMG_4823.jpg does not necessarily come before IMG_4824.jpg in your actual sequence — autosaved files sometimes get out-of-order timestamps if your phone was mid-cloud-sync.

Two ways to handle this:

• Reorder in the tool. Drag the thumbnails into the right sequence before converting. This is the right move if you have under ~20 images.
• Rename before uploading. For 30+ images, rename the source files first using a 01_, 02_, 03_ prefix. The tool will then load them in the order you want, and you skip the dragging.

Either works. The second is faster for large batches; the first is faster for casual use.

Why Not Just Use the Merge Tool?

Good question, since the Merge tool also combines files into one PDF. The difference is what each accepts:

• Image to PDF takes JPG and PNG and produces a PDF.
• Merge takes existing PDFs and stitches them together — it doesn't accept images directly.

So the workflow is: if your starting files are images, use Image to PDF. If you've already got individual PDFs (say, a contract and exhibit pages), use Merge. If you have a mix — three PDFs and four photos — convert the photos to PDF first, then merge all the PDFs together.

That two-step approach (Image to PDF → Merge) covers the messy real-world case where someone sends you "the documents" and they're a chaos of formats.

Image Size and PDF File Size

A common surprise: combining ten 4MB photos doesn't make a 40MB PDF — it usually makes a bigger one because PDFs add structure on top of the embedded images. If your output PDF is too large to email, run it through the Compress tool afterward. For phone photos, you'll typically get a 60-80% reduction with no visible quality loss.

If you know upfront the PDF needs to be small (say, under 2MB for a job application portal), shrink the source images first. Most phones let you export "Small" or "Medium" copies; a 1024px-wide JPG will produce a much leaner PDF than the original 4032px capture, and is plenty sharp on screen.

If you're constantly fighting attachment size limits, the PDF too large to email guide goes deeper on the size-shrinking tactics.

Privacy: Files Stay on Your Device

This matters more than people realize for image-to-PDF specifically. The kinds of things you combine into a PDF — receipts with credit card digits, medical photos, ID scans, court evidence — are exactly the things you don't want sitting in a stranger's S3 bucket.

The tool does the entire conversion in your browser using JavaScript and pdf-lib. Your images never leave your machine, not even temporarily. Close the tab and there's nothing to delete from a server because nothing was ever uploaded.

That makes it safe for:

• Driver's license or passport scans
• Receipts with full card numbers visible
• Medical records and prescription photos
• Tax documents
• Anything you wouldn't post publicly

Doing This on a Phone

The tool works on iOS and Android browsers. On iPhone, open Safari, go to the Image to PDF tool, tap the upload area, and pick "Photo Library" to grab images straight from your camera roll. Reordering with thumbnails works on touch screens too — long-press and drag.

The mobile workflow is genuinely useful for the receipt case: snap photos as the day goes, then at the end of the week combine them all into one expense PDF without ever moving the files to a computer.

When You Need More

If you regularly process hundreds of images into PDFs, or you need OCR to make the resulting PDF text-searchable (so your CPA can Cmd+F for "Office Depot"), Adobe Acrobat Pro has a built-in OCR step that runs after combining. For one-off jobs and most small-business workflows, the browser tool plus a free OCR pass covers it.

For everyone else: open the Image to PDF tool, drag your photos in, and you're done in under a minute.