Drop in photos, scans or screenshots, put them in order, and download a single multi-page PDF. Original JPEGs are not re-encoded, photo metadata is stripped, and nothing leaves this device.
JPG, PNG, WebP & HEIC
No JPEG re-encode
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Drop images here
JPG, PNG, WebP, GIF, AVIF or HEIC. Paste with Ctrl/⌘ V.
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To combine images into one PDF, add them to the tool above, put the thumbnails in the order you want the pages, choose a page size, and press Create PDF. Each image becomes one page of a single file. JPG, PNG, WebP, GIF, AVIF and iPhone HEIC photos all work, and the whole PDF is written inside your browser.
It is free, with no daily limit, no watermark and no account. The images are never uploaded, which matters for receipts, signed forms and private screenshots.
How to combine images into one PDF
Adding images. Drop files, choose them, or paste with Ctrl or Command + V, the quickest way to merge images to PDF straight from screenshots. HEIC photos from an iPhone are decoded by Safari natively; other browsers load a WebAssembly decoder of about 1.5 MB, once, from photomerge.app itself. An animated GIF contributes its first frame. Existing PDFs cannot be added as input. Want several images on one page instead? That is the merge editor.
Writing the file. The output is a standard PDF 1.4 that opens in any reader. Its document information holds only one entry, Producer "PhotoMerge.app": no title, author or creation date is written. The file name defaults to images.pdf and you can change it before you download.
Large sets. Each page is decoded in memory, so the tool warns above 150 images or about 300 MB estimated. iPhone Safari has the least room; split a very large set into two PDFs.
Images can arrive in any order. The strip sets the page order, and each image becomes one page.
Getting the page order right
Files rarely arrive in reading order. A phone picker returns photos in the order you tapped them, a folder drop may arrive alphabetically, and a paste goes to the end.
Sort by name uses a natural sort, which reads runs of digits as numbers. That matters for camera and screenshot names: a plain text sort compares character by character, so IMG_10 lands before IMG_2. Natural sorting puts IMG_2 first. Screenshot names usually contain the date and time they were taken, such as "Screenshot 2026-11-03 at 09.14.52", so sorting by name puts screenshots in the order you captured them.
After sorting, drag a thumbnail or use its arrow buttons to move one page, or remove it.
Plain text sorting scatters numbered files. Sort by name reads the numbers.
Page size: printing versus sharing
Fit to image (the default) makes each page exactly the size of its image, at 1 pixel = 0.75 point, which is 96 pixels per inch. PDF measures pages in points of 1/72 inch (ISO 32000-1:2008, the PDF 1.7 standard (Adobe-hosted copy), checked November 2026). A 1080-pixel-wide screenshot therefore gets an 810-point page, 11.25 inches wide. No white borders, ideal on screen, but a 12-megapixel phone photo (4032 × 3024) becomes a 42 × 31.5 inch page that a printer has to shrink.
A4 and US Letter are for printing and forms. The image is contained inside the margins and centered, never cropped or stretched. Auto orientation gives landscape photos landscape pages; Portrait or Landscape forces one for the whole file.
Page sizes and the space left for the image
Page
Size
Points
Image area, Small margin (18 pt)
Image area, Large margin (36 pt)
A4
210 × 297 mm
595.3 × 841.9
559.3 × 805.9 pt
523.3 × 769.9 pt
US Letter
8.5 × 11 in (216 × 279 mm)
612 × 792
576 × 756 pt
540 × 720 pt
Fit to image
Follows the image
pixels × 0.75
image plus 18 pt each side
image plus 36 pt each side
A4 is defined by ISO 216; Letter (ANSI A) by ASME Y14.1. Dimensions as listed in Wikipedia, Paper size, checked November 2026; points are millimetres ÷ 25.4 × 72. Small margin is 0.25 in (6.35 mm), Large is 0.5 in (12.7 mm).
Check pixels per inch on paper before printing. A 1080-pixel screenshot across a full A4 width (8.27 inches) prints at about 131 ppi: readable, slightly soft. A 4032 × 3024 photo on landscape A4 with a Small margin is about 10.4 inches wide, roughly 390 ppi, far more than a printer needs.
One limit comes from the format: the PDF standard recommends pages no larger than 14,400 points (200 inches) a side (ISO 32000-1, Annex C). With Fit to image, that is an image over 19,200 pixels long, such as a stitched scrolling screenshot. The tool scales such pages down to that limit automatically.
A4 is narrower and taller than Letter. Fit to image follows the image, so a phone screenshot makes a long, narrow page.
Screenshots to PDF without blurry text
Screenshots are where the default is not the best choice. A screenshot is usually a PNG of flat color and sharp text, and under Original it is encoded once as JPEG at 92%. JPEG works in 8 × 8 pixel blocks and can leave faint smudges around small type.
Lossless keeps every pixel, compressed with Flate, the zlib/deflate method PDF readers have decoded since PDF 1.2 (ISO 32000-1). The browser's CompressionStream does the work; MDN lists it in all major browsers since May 2023 (MDN Web Docs, checked November 2026), and the option appears only where it exists.
Use Lossless with Fit to image for screenshots of chats, receipts, code and spreadsheets: flat color compresses very well, and the PDF looks exactly like the screen. Avoid it for camera photos. Noise barely compresses, and a 12-megapixel photo is 36.6 MB of raw pixels (4032 × 3024 × 3 bytes).
Why is my PDF so big?
Oversized image PDFs usually come from one of four causes.
Full-resolution phone photos. A phone photo has 12 megapixels or more, needed or not.
Re-encoding JPEGs that were already compressed. Many converters decompress every JPEG and compress it again, so the file can grow and lose detail at once.
Photos stored losslessly. Lossless storage makes a photo page several times larger than its JPEG.
Screenshots saved as JPEG at high quality. Flat color often compresses better losslessly, so a lossless screenshot can be sharper and smaller.
Original avoids the second cause. A baseline or progressive JPEG in RGB or grayscale, with no EXIF rotation, is copied into the PDF byte for byte under the DCTDecode filter, which reads JPEG data directly; progressive JPEG has been part of it since PDF 1.3 (ISO 32000-1). No re-encode means no quality loss, and the page costs about what the JPEG did. Everything else is encoded once at JPEG 92%, transparency flattened on white.
Smaller handles the first cause. It re-encodes every image at JPEG 80% and caps the long edge at 2,400 pixels. For a 4032 × 3024 photo that is 2400 × 1800, about 35% of the original pixels, and still about 230 ppi across a landscape A4 page. Use it for upload size caps; keep Original for archives. The status line shows each file's size.
Before embedding, the tool strips the JPEG's metadata losslessly: EXIF (camera, date, GPS), XMP, IPTC, comments and C2PA. No quality mode leaves photo metadata in the PDF. Your original photos keep theirs; to share those, clean them with Remove Photo Metadata.
Original copies plain JPEGs untouched. Every other path encodes each image exactly once.
Built-in alternatives on iPhone, Mac, Windows and Android
Every major system can combine images into one PDF without a website, with trade-offs in order, page size and formats.
Images to PDF without extra software
Device
Steps
Watch out for
iPhone, iPad (Files)
Save the images to Files, tap More (…), Select, pick the images, then More › Create PDF. On recent iOS it sits under Quick Actions.
No way to reorder pages; one guide reports HEIC may need converting first
iPhone, iPad (Photos)
Select photos, Share › Print, pinch out on the preview, then share or save the PDF.
One image per page, page size set by the print dialog
Mac (Finder)
Select the files, Control-click, Quick Actions › Create PDF.
Pages follow the order you selected the files in
Windows 10 and 11
Select the pictures in File Explorer, right-click › Show more options › Print, choose Microsoft Print to PDF and a full-page layout.
"Fit picture to frame" is ticked by default and crops edges
Android (Chrome)
Open the image, More › Share › Print, choose Save as PDF.
On a Mac with photos already in order, Finder is hard to beat. On Windows, name the files so they sort correctly and untick Fit picture to frame. This tool helps when you need to reorder pages, mix HEIC, WebP and screenshots, set margins, or keep original JPEGs untouched.
Combine images into one PDF — questions
Can I combine photos into one PDF on my phone?
Yes. The tool runs in current mobile browsers on iPhone and Android: choose photos from the library, reorder them, and the PDF downloads to the device. For very large sets, make two PDFs or use Smaller.
Is there a limit on the number of images?
No fixed limit and no daily cap, no watermark and no account. The tool warns above 150 images or about 300 MB estimated, because each page is held in memory while the file is written.
Can I add an existing PDF to the images?
No. This tool only takes images as input. To join a new image PDF with an existing PDF, create the image PDF here, then combine the two files with a PDF merger or, on a Mac, with Preview.
Does it work with iPhone HEIC photos?
Yes. Safari decodes HEIC itself. In other browsers a WebAssembly decoder of about 1.5 MB is loaded once from photomerge.app, and the photo is then encoded as a JPEG page. Nothing is sent to another server.
Will converting JPG to PDF reduce quality?
Not with the default Original setting when the file is an ordinary upright JPEG: its compressed image data is copied into the PDF unchanged, with only the metadata removed. Rotated or CMYK JPEGs and other formats are encoded once at 92% quality. Smaller trades some quality for size, and Lossless keeps every pixel.
Are my images uploaded anywhere?
No. The images are read, ordered and written into the PDF inside your browser. Anonymous interface events, such as a rough count of images per PDF, are recorded for analytics; image content and file names are never sent.