Image to PDF
Convert one or more images into a single PDF. Choose page size and margins. Everything runs in your browser.
What this tool actually does
Image to PDF assembles any number of pictures into one PDF document, entirely in your browser using the open-source pdf-lib library. Each image gets its own page; you control the page order with the arrows, the page size (A4, US Letter, or Auto), and the margin. JPG and PNG files are embedded directly without re-encoding, so there is no quality loss — the PDF contains your original image data. It's the standard way to turn phone photos of documents, receipts, or whiteboards into a single file you can email or archive.
A worked example
Say you add a 1920×1080 screenshot and choose A4 with the default 24pt margin. An A4 page is 595.28×841.89 points, so the usable area inside the margins is 547×794 points. The tool scales the image by the largest factor that fits both dimensions — here 0.285 — and draws it 547×308 points, centered on the page. (These numbers are calculated by the same code that builds your PDF.) Images are never stretched or cropped, and small images are never enlarged: the scale factor is capped at 1 so nothing gets blurry.
Choosing a page size
Use A4 or Letter when the PDF is destined for printing or for anyone who expects a "normal document" — scans, receipts, homework. Landscape screenshots on portrait pages leave large white bands above and below (exactly what the example numbers show); that's correct print behavior. Choose Auto when the PDF is for screen viewing: each page is sized to its image plus margin, so photos fill their pages edge to edge regardless of orientation.
One document, mixed sources
You can mix formats freely — JPG photos, PNG screenshots, WebP images — in one document. WebP (and other non-JPG/PNG formats) are converted to high-quality JPEG (92%) during embedding since PDF doesn't support them natively. If your goal is the reverse — pulling pages out of an existing PDF as images — that's the PDF to Image tool's job.
How to use Image to PDF
- 1Add one or more images.
- 2Reorder them with the up/down arrows.
- 3Pick a page size (A4, Letter, or Auto) and margins.
- 4Click Build PDF to download.
Frequently Asked Questions
What formats are supported?
JPG and PNG are embedded directly with zero quality loss. WebP and other browser-readable formats are converted to 92%-quality JPEG first, since PDF doesn't support them natively.
Is there a size limit?
No artificial limit on image count or size. Everything is assembled in your device's memory, so hundreds of large photos may be slow on low-end hardware.
Can I add text or captions?
Not in this tool — it deliberately does one job. Build the PDF here, then add text overlays in a PDF editor.
How are pages sized?
A4 and Letter produce standard print pages with your image fitted and centered inside the margin. Auto sizes each page to its image plus margin — best for screen viewing.
Will my images be compressed?
JPGs and PNGs keep their exact original bytes. If the resulting PDF is too large to email, run it through the PDF Compressor or compress the images before adding them.
Limitations & Privacy
- Pages come from images only — this tool doesn't merge existing PDFs or add text.
- Images are fitted, never cropped or enlarged: a small image on an A4 page stays small and centered.
- Non-JPG/PNG inputs (like WebP) are converted to JPEG during embedding, which flattens transparency to white.
- Building very large documents happens in browser memory; if the tab runs out, split the job into two PDFs.
- Privacy: images and the finished PDF exist only on your device — nothing is uploaded.