PDF Converter

PDF carries pages rather than a single image, which is why converting one produces an image per page and converting into one can merge a batch back into a single document. It is the format for sending something that must look identical everywhere.

PDF at a glance

Full namePortable Document Format
Extension.pdf
MIME typeapplication/pdf
CompressionLossy and lossless
TransparencyNo
AnimationNo
ColoursDevice-dependent
Browser supportAll browsers (via built-in viewers)
Typical useDocuments, print, archival, sharing
Introduced1993

PDF questions

What happens when I convert a PDF to images?

Each page is rendered and written as its own image file, so a ten-page PDF produces ten images. They arrive as a batch you can download together, and the page order is preserved in the file names.

Can I merge several images into one PDF?

Yes. Upload them together, choose PDF as the output and enable merging, and each image becomes a page in a single document in the order you arranged them. Leaving merging off gives one PDF per image instead.

Does converting a PDF to images keep the text selectable?

No. An image has no text layer, so the words become pixels: searchable in the PDF, not searchable afterwards. That is sometimes the reason for converting — it is how you stop a document being copied out of — but it is worth knowing before you do it.

What resolution are pages rendered at?

High enough that text stays legible at normal viewing size rather than at the PDF's nominal page size, which carries no pixel dimensions of its own. Vector pages can be rendered at any resolution; scanned pages are limited by whatever the scanner captured.

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