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Merge Images to PDF

Merge multiple JPG and PNG images into one multi-page PDF online for free. Files become pages in upload order. Costs 1 credit per image — no signup for a single file.

Drop files here or click to upload

JPG, JPEG, PNG · up to 20.0 MB per file

Files are private and deleted after conversion

How to use Merge Images to PDF

  1. 01

    Select your images in the order you want

    Choose 2 or more JPG or PNG files from your device — you can mix both formats. There is no reorder-after-upload step, so pick or drag them in the order you want the final pages to appear.

  2. 02

    We build one PDF page per image, in order

    The server builds a single multi-page PDF with pdf-lib, adding one page per image in your upload order. EXIF orientation is applied automatically, and each page is sized to match its own image.

  3. 03

    Transparency and oversized images are handled automatically

    Transparent PNG pages are flattened onto a white background, and any unusually huge image is clamped to a safe ceiling of about 200 inches per side, so the finished PDF opens reliably in any reader.

  4. 04

    Download your merged.pdf

    You get exactly one file — a single merged.pdf via a secure signed link, not a ZIP of separate PDFs like our other batch tools produce. Billing is 1 credit per image included in the merge.

Why choose our Merge Images to PDF

One combined PDF at full resolution

Every image is embedded on its own page — PNG pages keep their exact lossless pixels and JPG pages are re-encoded once at high quality — so the merged PDF keeps the same quality as converting each photo individually.

Opens on any device

The merged file is a standard ISO 32000 PDF, so it opens correctly in any PDF reader, browser, or the built-in viewer on phones and computers.

Automatic file cleanup

Uploads travel over encrypted HTTPS; the merged PDF is deleted within 24 hours and the source images within 6–24 hours.

Try it free with a single file

Anonymous visitors get 1 free server conversion, enough to try a single-image PDF; sign up for a free account to merge small batches, or go paid for larger merges.

Fast, even for many pages

Because pdf-lib builds the combined PDF directly in JavaScript with no external renderer, merging dozens of images typically finishes in seconds.

Settings guide

Page order (upload order, no reorder yet)
There is no setting to change: the PDF pages are created in the exact order you select or drag in your files, and there is no reorder-after-upload UI yet. If you need a different page order, rename or reselect your files in that order before uploading.
Page size & transparency (automatic)
Each page is sized to match its own source image at 1 pixel ≈ 1 point — mixing a portrait photo with a landscape screenshot is fine and produces two differently sized pages in the same PDF. EXIF orientation is applied automatically, and transparent PNG areas are flattened onto a white page background.

About the formats

JPG

JPG (also written JPEG) is the most widely used lossy image format for photographs, standardized by the Joint Photographic Experts Group in 1992. Practically every camera, phone, and image application can create and open it.

Its strengths are small file sizes for photos and universal compatibility across devices, browsers, and software. The trade-offs: lossy compression introduces artifacts, there is no transparency support, and quality degrades a little more with every re-save. Use JPG for photographs; choose PNG for screenshots, logos, or anything that needs sharp edges or transparency.

PNG

PNG is a lossless raster image format created in the mid-1990s as a patent-free replacement for GIF. It is the standard choice for screenshots, logos, UI graphics, and any image that needs transparency.

PNG preserves every pixel exactly and supports a full 8-bit alpha channel, so text and sharp edges stay crisp. The downside is size: photographs saved as PNG are far larger than the same image as JPG or WebP. Support is universal in browsers and editors, making it a safe default for graphics — just avoid it for large photo collections.

PDF

PDF (Portable Document Format) is a fixed-layout document standard created by Adobe in 1993 and standardized as ISO 32000. Because a PDF renders identically on every device, operating system, and printer, it is the default format for invoices, forms, reports, and anything meant to be shared or printed.

PDF is great for sharing and printing because the layout never shifts, but it is not an image editing format — content is hard to change once the file is created. Our tools can both generate PDFs from your images (each image becomes a one-page PDF, or merge several into one multi-page PDF) and read existing PDFs back into images via pdf-to-jpg and pdf-to-png.

Troubleshooting

My pages are in the wrong order
Pages follow the exact order your files were selected or uploaded in — there is no reorder-after-upload step yet. Rename your files (e.g. 01-, 02-, 03-) or reselect them in the order you want pages to appear, then upload again.
Why did this cost more credits than I expected?
images-to-pdf charges 1 credit per image merged, not 1 credit per PDF — merging 5 photos into one PDF costs 5 credits. This matches how every other batch tool on the site bills, but it differs from pdf-to-jpg and pdf-to-png, which charge a flat 1 credit per PDF regardless of page count.
My PDF pages are different sizes from each other
That is expected. Each page is sized to match its own source image (1 pixel ≈ 1 point) rather than a shared paper size, so merging photos of different dimensions produces a PDF with pages of different sizes. Resize your images to matching dimensions before uploading if you need uniform pages.

FAQ

How does merging multiple images into one PDF work?
Upload 2 or more JPG or PNG files and we build a single PDF with one page per image, in the exact order you selected or uploaded them. There is no reorder-after-upload UI yet, so arrange your files in the right order before uploading.
How many credits does merging cost?
One conversion credit per image merged — merging 5 images costs 5 credits, not 1. This is different from pdf-to-jpg or pdf-to-png, which charge a flat 1 credit per PDF regardless of how many pages it has, because images-to-pdf follows the same per-file billing every other batch tool uses.
Will every page be the same size?
No. Each page is sized to match its own source image at 1 pixel ≈ 1 point, so merging a portrait photo and a landscape screenshot produces a PDF with two differently sized pages — there is no forced uniform page size across the document.
What happens to transparent areas in PNGs I merge?
PDF pages are opaque, so transparent pixels in any PNG are flattened onto a white background on that page automatically, the same as our single-image png-to-pdf tool.
Can I merge JPGs and PNGs together in one job?
Yes. You can mix JPG and PNG files freely in the same merge — each is embedded on its own page in the order you uploaded them.
What happens if I only upload one image?
It works, but merging needs at least 2 images to be worth it. Uploading a single file produces the same result as our image-to-pdf tool: a one-page PDF sized to that image, for 1 credit.
Is merging private, and are there size or batch limits?
Yes. Files upload over encrypted HTTPS, the merged PDF is deleted within 24 hours, and source images within 6–24 hours. Anonymous visitors get 1 free server conversion; a free account allows 50 MB per file and batches up to 5 images every 30 days (within your 3-conversion grant); paid accounts get 200 MB per file and batches up to 100 images.
Can I edit or select text in the merged PDF?
No. Each page embeds your image as a picture — there is no OCR, so any text in the photos stays pixels and cannot be selected or searched.

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