Images to PDF
What Images to PDF actually does
The quiet failure in this category is the page size. An image has pixels; a PDF page has points, seventy-two to the inch, and a converter that treats one pixel as one point turns a three thousand pixel wide photograph into a page forty-one inches across. It opens, it prints on one sheet because the printer scales it, and it is wrong everywhere it matters: it will not sit alongside other pages, the file reports a size no paper has, and any tool downstream that trusts the page box makes a decision from a fiction. The fix is to say how many pixels make an inch. This page defaults to a hundred and fifty, the same as the command line tool, so that three thousand pixel photograph becomes a twenty by thirteen inch page, and the number is a control because a screenshot at ninety-six and a scan at three hundred want different answers. The other route is fixed paper: letter or A4, with the image centered inside a margin. Enlarging is refused there, deliberately, so a small icon sits at its own size in the middle of the sheet rather than being blown up into a blur. Every produced page is drawn here with its exact size printed beside it, which is the check that catches the forty-one inch page before it leaves.
How to use it
- Choose one image or many. They become pages in the order they are listed, and you can drop any of them before running.
- Pick the page size. Fit carries the pixels across at the placement resolution; letter and A4 center the image inside a margin.
- Set the placement resolution when using fit. A hundred and fifty is right for a photograph or a scan; a screenshot usually wants ninety-six.
- Set the margin when using letter or A4.
- Read the page sizes in the table, then download the PDF.
Useful for
- Send a set of phone photographs as one document instead of an album of attachments.
- Turn a folder of scans into a single file that prints at the size the original was.
- Assemble screenshots into a report at a resolution where the text is readable on paper.
- Produce a PDF whose page size other tools can trust, rather than one measured in pixels.
Limits worth knowing
- PNG and JPEG are placed directly. Any other format is decoded through the browser first, so what works depends on the browser.
- A multi-frame TIFF or GIF becomes one page here. Splitting every frame into its own page needs the command line tool.
- Nothing is enlarged on letter or A4. A small image sits at its own size, centered, rather than being scaled up.
- No compression is applied. A folder of large photographs makes a large PDF; run it through the compressor afterwards.
- Orientation recorded in EXIF is applied by the browser's decoder, which is not always the same answer a desktop viewer gives.
Questions people ask
undefined
undefined
undefined
undefined
undefined
undefined
undefined
undefined