Merge PDF
Combine several PDF files into one, in the order you choose, directly in your browser.
Images to PDF
Turn JPG, PNG and WebP images into one PDF, with image-sized, A4 or Letter pages.
Your files stay on your device.
Drop images to make one PDF Release to add them
PDFs up to 100 MB each, or JPG, PNG and WebP images up to 50 MB each.
Pages are copied as they are, without being turned into images.
Transparent areas stay transparent in the PDF; most viewers show them on a white page.
WebP images are stored as PNG inside the PDF.
Your files are read on your device and are not uploaded or changed.
Help improve UNQIRO
Allow anonymous usage statistics? UNQIRO would count only which tool was used, whether it finished and which links between the tools and the Format Lab were followed. Your files, text and results are never included, and this use is not counted.
How your images are placed
- Never stretched or cropped: Every image becomes one page and keeps its proportions. On A4 or Letter it is scaled to fit inside the margins and centred, so some white space may remain; with "Fit image" the page takes the size of the image.
- Upright, as you see them: Phone photos store their rotation separately. The tool reads it and places each photo upright, and "Auto" turns the page to landscape for wide images.
- No camera metadata in the PDF: JPG photos are embedded without re-compressing, but EXIF, XMP and IPTC blocks such as camera model and GPS location are left out. PNG and WebP images are stored as lossless pixels.
Frequently asked questions
How many images can I put into one PDF?
Up to 50 images. Each image can be up to 50 MB and 40 megapixels; larger images would exceed what a browser tab can safely handle.
Can I mix JPG, PNG and WebP?
Yes. JPGs are embedded as they are, PNGs keep their pixels without loss, and WebP images are stored as PNG inside the PDF, because PDF has no WebP support.
What happens to transparent areas?
They stay transparent in the PDF. Most viewers and printers show them on a white page, so transparent areas usually look white.
Will my PDF be larger than the images?
For JPGs, only slightly, since they are embedded without re-compressing. PNG and WebP images can grow, because their pixels are stored losslessly.