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JPG to PDF 500 KB

500 KB is 512,000 bytes, and for photos turned into a PDF it is a workable budget rather than a tight one. Three or four document photos fit at a quality where the print stays sharp. Build the PDF first, then compress it to the target, and check the smallest type on the page.

JPG to PDF

What 500 KB buys per photo

One photo gets the whole budget and looks essentially untouched. Three photos get about 170 KB each, which holds printed text and keeps a signature clean. Six get 85 KB each, which is fine for a typed page and poor for anything handwritten in pencil.

The compress step at a 500 KB target was measured on the public bench at 9 of 16 cases, the best reach of the four targets it ran. That corpus was documents rather than photo assemblies, so treat it as an upper bound for this case. No converter can promise a number it has not run against your own photos.

The downsample step

When the images have more pixels than the page can show, the compress step reduces them. A phone photo is often four thousand pixels wide, while an A4 page at print resolution needs around two and a half thousand. Those extra pixels cost bytes and show nothing.

That is why a 500 KB target on a photo assembly usually costs less than it sounds. The first thing to go is resolution nobody could see, not detail anyone was using. The compress tool reports the quality it settled on.

Running the two steps

Start at the images to PDF tool, drop the photos in, set the page size and margin, and get a PDF that keeps the original pixels. Then take it to a 400 KB target or straight to 500 KB, depending on how strict the form is.

Both steps run inside the tab. The photos are read from disk, worked on in memory, and written back to your downloads folder. Nothing is uploaded and nothing is kept.

Questions people ask

How many photos fit in a 500 KB PDF?
Three or four at a quality where printed text stays sharp. Six is possible at about 85 KB per page, which softens handwriting. One photo has the whole budget and comes out looking untouched.
Does the tool reduce my photo resolution?
It can, when the photo has more pixels than the page needs. A four thousand pixel wide phone photo on an A4 page is carrying detail no viewer will ever show, and that is the cheapest thing to remove.
Is 500 KB enough for photos of an ID document?
For the two sides of one card, comfortably. Each side gets around 250 KB, which keeps the small print and the photo on the card readable. Check the smallest text on the result before you send it.
Can I set the page size when converting JPG to PDF?
Yes. The images to PDF step lets you choose the page size and the margin, so the photos sit on a real page rather than defining their own. That choice affects the final size, because it decides how many pixels each page needs.

Do it now

The tool runs in this browser. Your file never leaves the machine, and the result is checked before you download it.

JPG to PDF

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