Turn images into one PDF
Put photos, scans and screenshots into a single PDF, in your order, on the page size you need.
- Processed on your device. Your photos are never uploaded. How we know
- Free, no sign-up, no watermark
Drop photos or scans to put in a PDF
Drop files, paste with Ctrl+V, or choose them from your device.
PixWrench’s code runs on your device. We don’t receive your files, file names or their contents.
PixWrench’s code runs on your device. We don’t receive your files, file names or their contents. What happens to your files
How to convert images to PDF and combine them into one file
Forms and offices often ask for “a single PDF”: receipts for an expense claim, pages of a signed contract photographed on a phone, ID documents for an application. This tool takes a pile of images, lets you put them in order, and produces one tidy PDF with a page per image.
Photos straight from an iPhone can go in as HEIC; there’s no need to convert them first with the HEIC to JPG converter. If the result is too big for an upload limit, shrink the photos first with the image compressor.
- 1
Add images
Drop in JPG, PNG, WebP, AVIF or HEIC files. Each becomes one page.
- 2
Arrange and set the page
Drag pages into order or use the move buttons, then choose page size, orientation and margins.
- 3
Create the PDF
Download one PDF containing every image in the order shown.
What this tool does
- Accepts JPG, PNG, WebP, AVIF and HEIC
- Reorder pages by dragging or with move buttons
- Page size: fit to each image, A4 or US Letter
- Orientation: auto, portrait or landscape
- Margins: none, small (10 mm) or large (20 mm)
- JPGs embedded as they are, with no recompression
- PNGs embedded losslessly
- One PDF out, built in your browser
A 1600 × 1200 photo on landscape A4
A4 is 210 × 297 mm (ISO 216). Turned to landscape with small 10 mm margins, the printable area is 277 × 190 mm. Our 1600 × 1200 test photo has a 4:3 shape, so its height runs out first: it fits at 253.3 × 190 mm. Spreading 1600 pixels across 253.3 mm (9.97 in) works out to about 160 pixels per inch.
We built that one-page PDF with pdf-lib, the library the tool uses, in Node (script measure-t1.mjs). We embedded the test JPG with its metadata stripped (398,133 bytes); the finished PDF was 399,157 bytes. The difference, 1,024 bytes, is the PDF’s own structure. The photo went in untouched.
How each image becomes a page
A PDF can carry JPEG data directly, so PixWrench embeds your JPGs exactly as they are: no second round of compression, no extra loss. The only exception is a JPG that needs rotating to sit upright, which has to be redrawn. PNGs are embedded losslessly. pdf-lib embeds JPG and PNG images, so WebP, AVIF and HEIC are converted to JPG at quality 90, or to PNG when they have transparency.
The document itself is assembled with pdf-lib, an open-source JavaScript library, running in your browser. Nothing is rendered on a server.
Choosing page size, orientation and margins
| Margin | Usable area |
|---|---|
| None | 210 × 297 mm |
| Small (10 mm) | 190 × 277 mm |
| Large (20 mm) | 170 × 257 mm |
Fit to each image makes every page the shape of its picture, ideal for on-screen reading. A4 and US Letter suit printing and official submissions; pick the one your recipient’s printer or form expects. Auto orientation turns landscape photos onto landscape pages so they aren’t shrunk to fit a tall page. For print quality, our DPI and pixels guide explains how many pixels a page needs.
Merging, compressing or splitting PDFs
This tool makes PDFs from images. To join it with existing PDFs, reduce its size or split pages out, our sister site PDFMagpie has PDF tools that also run in your browser without uploading.
Good to know
- A PDF is only as small as the images inside it. Ten 4 MB JPGs, embedded unchanged, make a PDF of roughly 40 MB.
- Sideways photos are turned upright automatically; that one case means the JPG is re-encoded.
- The pages are pictures, so text in a scanned document isn’t searchable or selectable.
- Phones and low-memory devices limit each image to 24 megapixels, and computers to 50 MP.
What happens to your files
Processed on your device. Your photos are never uploaded. PixWrench’s code runs on your device. We don’t receive your files, file names or their contents.
The images are read, ordered and packed into the PDF inside this tab, and the file is saved straight to your device. Receipts, IDs and contracts never leave your computer or phone. Closing the tab clears everything the tool held in memory.
Separately from the tool, the page loads advertising and analytics scripts, listed in our privacy policy.
Related tools and guides
Questions people ask
How do I combine several images into one PDF?
Add them all, drag them into the right order, choose a page size and download. Every image becomes one page of the same PDF.
Will my photos lose quality in the PDF?
JPGs are embedded unchanged and PNGs losslessly. WebP, AVIF and HEIC are converted to JPG at quality 90 (PNG if transparent).
Can I convert iPhone HEIC photos to PDF?
Yes, add them directly. They are converted to JPG inside the PDF.
Should I choose A4 or US Letter?
Use the paper size the recipient prints on, or the one a form names. If the PDF will only be read on screen, Fit to each image avoids white borders.
How do I make the PDF smaller?
Compress or resize the images before adding them, or reduce the finished file with the PDF tools on PDFMagpie.
Can I add images to an existing PDF?
Create a PDF of the images here, then merge the two files with PDFMagpie.
Sources and review
- pdf-lib on GitHub
- ISO 216:2007, writing paper trimmed sizes (ISO catalogue)
- MDN: Image file type and format guide
Page reviewed by the PixWrench team · How it works · Changelog · Report a problem