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Combine Images Into One PDF — Free

Merge JPGs, PNGs, and scans into a single PDF in the right order, at the right size — for applications, portfolios, receipts, and document submissions.

By Formatly

“I need these 12 images as one PDF” is a request that arrives by email, from portals, and from bureaucracy with annoying regularity. Job applications, expense reports, visa documents, portfolios, scanned contracts — the world runs on PDFs. Here’s how to combine images into a single PDF properly.

Before you start: prepare the images

Order matters. Sort your images into the final order before combining — 01-receipt.jpg, 02-receipt.jpg, or just arrange them deliberately. Fixing page order after the PDF is built means rebuilding it.

Mind the orientation. Phone photos carry EXIF orientation flags that some PDF builders ignore, producing sideways pages. If a source image displays rotated anywhere, rotate and re-save it first.

Clean up the scans. If you’re combining scanned documents, this is your last cheap chance to fix them: straighten, crop the desk out of the frame, and make sure text is legible. A PDF of 12 crooked scans with your keyboard visible in the background is not the impression you want.

Strip sensitive metadata. Photos contain GPS coordinates and device info in their EXIF data. For documents you’re sending to strangers (job applications, landlords, portals), strip the EXIF from the images first — the PDF won’t carry what the images no longer contain.

Page size and layout choices

Match the content, not the paper. For photos and portfolios, let each page fit its image — forcing a square Instagram photo onto A4 letter paper adds ugly white margins. For documents and scans, standardize on A4 or Letter so the PDF feels like a document, not a slideshow.

One image per page is right for documents, receipts, and applications — each page is a discrete item. Multiple images per page works for contact sheets and photo collections, but keep it consistent throughout.

Margins. A small margin (5–10% of page width) looks professional for documents; full-bleed is fine for photo portfolios. Inconsistent margins across pages look sloppy — pick one and apply it to all.

Quality vs. file size

PDFs made from images are only as good as the source images, and portals almost always have file-size limits (2 MB, 5 MB, 10 MB are common). The workflow:

  1. Check the size limit first. Nothing is more annoying than building the perfect PDF and discovering the portal rejects it.
  2. Compress images before combining, not after. A PDF is a container — shrinking the images inside is what shrinks the PDF. Compress photos to quality 80–85 before building.
  3. Downsample oversized scans. A 600 DPI scan of a receipt is absurd; 150–200 DPI is plenty for documents viewed on screen.
  4. For text documents, JPG quality 85+ keeps small print legible. Below 75, fine text starts to fuzz.

Typical result: 10 phone photos (4 MB each) → compressed to ~200 KB each → one tidy ~2 MB PDF.

Common scenarios

Job / visa / university applications. One PDF, documents in the requested order, named clearly (surname-documents.pdf). These get opened by humans on unknown devices — keep it simple, standard page size, legible.

Expense reports. Receipts in chronological order, one per page, cropped tight. Your finance team will silently thank you.

Photo portfolio. Image-fit pages, minimal margins, consistent color. Export images at the same quality so no single page looks worse than the others.

Scanned multi-page document. If your scanner produced separate files per page, combining to PDF reconstructs the document. Consider whether the recipient would prefer the PDF or the individual images — for archival, PDF wins.

What NOT to do

  • Screenshots of text as “documents.” If you have the actual text, a real text PDF is smaller, searchable, and accessible. Image-PDFs are for when images are all you have.
  • Mixing wildly different qualities. One pristine scan among eleven blurry photos draws attention to the blurry ones.
  • Forgetting page numbers on long documents. For 20+ page PDFs, numbered pages (or at least ordered filenames) save everyone confusion.

Practical next steps