How to Combine Images Into One PDF
Add your images
Drag JPG, PNG, or WebP files onto the upload area or click to browse. Each image you add becomes its own page, and the conversion runs entirely in your browser so the files stay on your device.
Set the order and page layout
Drag the thumbnails to arrange the page sequence, then pick a page size (A4, A3, Letter, Legal, or a custom size in millimeters), choose portrait or landscape, and select a fit mode for how each image sits on the page.
Convert and download
Click Convert to PDF. The status line reports progress image by image, then offers a download. The result is saved as a single PDF file built locally with the pdf-lib library.
Fit Modes and Layout Options
The three fit modes control how each image is placed on the page. Fit and Fill apply a half-inch margin and center the image, while Original ignores margins and keeps the source pixels at their native size. Choose based on whether you want full-page coverage, a clean border, or exact pixel placement.
| Option | What it does | Best for |
|---|---|---|
| Fit | Scales the image down to sit inside the page with a margin, preserving aspect ratio and never enlarging it. | Documents and screenshots that should stay fully visible. |
| Fill | Scales the image to cover the whole page and crops the overflow, preserving aspect ratio. | Edge-to-edge photo pages with no white border. |
| Original Size | Places the image at its native pixel dimensions with no margin. | Keeping exact image size regardless of page size. |
| Page Size | Sets each page to A4, A3, Letter, Legal, or a custom width and height in millimeters. | Matching a print or paper standard. |
| Orientation | Applies portrait or landscape to every page in the document. | Wide photos or tall documents. |
| Reorder | Drag thumbnails to change which image appears on which page. | Setting a specific reading or print sequence. |
Which Settings Should You Pick
Sharing scanned pages
Use A4 or Letter with Portrait and the Fit mode. The half-inch margin keeps text and edges inside the page so nothing is clipped when the recipient prints it.
Photo album or portfolio
Pick Fill for full-bleed pages that cover the sheet edge to edge. Set Landscape if your photos are wider than they are tall to reduce cropping.
Exact pixel placement
Choose Original Size when image dimensions matter more than the paper size. The image keeps its native pixels and is placed without a margin.
Custom paper format
Select Custom and enter the width and height in millimeters. This suits labels, photo prints, or any non-standard sheet that A4 or Letter cannot match.
Common Problems and Fixes
My file was rejected
Only JPG, PNG, and WebP images are accepted. Other formats such as HEIC, BMP, TIFF, or GIF will not load. Convert them first, for example using the HEIC to JPG tool, then add the JPG version here.
The image is cropped in the PDF
That is the Fill mode covering the whole page and trimming the overflow. Switch to Fit to keep the entire image visible inside the page, or to Original Size to keep its exact pixels.
Pages came out in the wrong order
Pages follow the thumbnail order at the moment you convert. Drag the thumbnails into the sequence you want, confirm the order, then click Convert to PDF again.
A large batch feels slow
Every image is embedded one at a time in your browser, so many high-resolution photos can take longer on lower-powered devices. The status line shows which image is being processed; let it finish before downloading.