Image to PDF
Combine multiple images into a single PDF document.
By Syed Mubashir Ali · Last updated
Picking the right settings
Two choices decide what your PDF is good for: page size and quality. For page size, A4 or Letter gives you uniform, printable pages: the right call for anything official: forms, applications, contracts, anything someone might print. Fit to image makes each page exactly the photo's size, which is nicer for sharing a set of pictures but gives you a PDF with seven different page sizes. There's no wrong answer, just the wrong one for the job.
For quality, the trade is simple. Best quality keeps up to 4000 px per image: choose it when the PDF will be printed or zoomed into. Smaller file caps images at 2000 px and compresses a little harder, which is plenty for reading on screen and keeps the file email-friendly. When in doubt: Best quality for printing, Smaller file for emailing. Auto orientation handles the rest, turning the page sideways for wide photos so nothing gets squeezed.
Jobs this is quietly good at
Expense receipts are the classic: photograph the pile, drag them into date order, and hand finance a single PDF instead of a zip of sideways photos. It works just as well for scanned contracts (page by page, in order), school and immigration forms, meeting whiteboards, and rental applications: anywhere the requirement is 'one PDF' and your source material is a camera.
A few habits make the result look professional rather than improvised. Put the pages in order before converting: reordering a finished PDF is a different tool. Give the file a proper name (contract-signed.pdf, not document-final2.pdf).
How to Use Image to PDF
- 1Drop in your images: JPG, PNG, WebP, GIF or BMP. Each image becomes one page, in the order you add them.
- 2Arrange the pages: drag the thumbnails into order, or use the arrow buttons. Delete any photo that doesn't belong before you convert.
- 3Choose the page size: A4 or Letter for standard printable pages, or Fit to image when each page should be the photo's own size. Set the orientation and margins.
- 4Pick the quality. Best quality keeps up to 4000 px per image (for printing); Smaller file caps images at 2000 px with a bit more compression (for emailing and uploading).
- 5Click 'Convert to PDF' and download it. Photos land upright (orientation is corrected automatically) and transparent PNGs stay PNG while photos are stored as JPG.
Frequently Asked Questions
Will my phone photos come out sideways?
No. Each photo is decoded upright using its orientation information before it goes into the PDF, so pages match what you see in the thumbnails.
How are the pages sized?
On A4 or Letter each image is scaled to fit inside the margins and centred; Auto orientation turns the page sideways for wide photos. 'Fit to image' makes each page the size of its picture.
How can I make the PDF smaller?
Choose 'Smaller file': images are limited to 2000 px and compressed a little more, which is plenty for reading on screen and most printing. 'Best quality' keeps up to 4000 px.
Is there a limit on the number of images?
No fixed limit: each image can be up to 25 MB, and your device's memory is the practical limit.
Is it safe for private documents?
Yes. The whole conversion runs in your browser: scans, receipts and statements are never uploaded to a server. There's nothing to leak because nothing leaves your device.
A4 or Fit to image, which should I pick?
A4 or Letter when the PDF needs to look like a proper document: uniform pages, good for printing and official forms. Fit to image when each page should be the photo's exact size: good for sharing, though page sizes will vary.
Do transparent images keep their transparency?
Yes. Images with transparency are stored as PNG inside the PDF; photos are stored as JPG. Each format keeps what it's good at.
Can I convert just one image?
Yes. One image makes a tidy one-page PDF. Handy for turning a single receipt or scan into something you can actually email.
About Image to PDF
Somewhere out there is a form that says 'upload one PDF'. You have a camera roll: seven photos of receipts, a contract photographed page by page, a whiteboard full of meeting notes. Emailing seven loose photos is how attachments go missing and how accountants sigh. One PDF, in the right order, is the difference between a chore and a document.
The Image to PDF converter builds that document in your browser. Every image is decoded upright and placed on a standard A4 or Letter page with the margin you choose, or on a page sized to the picture. You set the page order by dragging before you convert, photos are stored as JPG and images with transparency as PNG, and there's no upload and no account.
The part worth saying twice: nothing leaves your device. Receipts, contracts, ID scans, payslips: the exact things you're most likely to turn into PDFs are the things you'd least like sitting on someone else's server. Here the conversion happens on your machine, in your browser, and the file you download is the only copy that exists.