Free Online Images to PDF Converter
The document is opened and edited in this tab. It stays local — a contract or a scan is never uploaded to be processed.
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How it works
Embedded, not re-encoded
A JPEG does not need converting to live inside a PDF. Its compressed bytes become the contents of an image XObject with the DCTDecode filter — the same data, wrapped in PDF structure — so there is no decode and re-encode step and no second generation of lossy artefacts. PNG data is carried across losslessly, with an alpha channel mapped to an /SMask so transparency survives. Each page then contains a single content stream that draws that XObject into the page box at the size and position your page-size and orientation choices imply.
- JPEG embedding
- The original DCT-compressed bytes are stored directly with the DCTDecode filter. No pixels are re-encoded, so the image cannot lose quality on the way in.
- PNG embedding
- Lossless throughout. Transparency becomes an /SMask, so a logo with a soft edge composites properly instead of gaining a white box.
- Page size
- A4 at 595×842 points, US Letter at 612×792, or a page sized to the image itself so nothing is scaled or padded.
- Orientation and fit
- Portrait or landscape, with the image scaled to fit inside the margins while keeping its aspect ratio. It is never stretched.
- Order
- One image per page, in the order you arrange them. Filenames are not re-sorted behind your back.
How to use it
How to convert images to PDF online
- 01
Add the images
JPG and PNG, read from disk with the File API rather than uploaded.
- 02
Order them and pick a page size
A4, Letter or fit-to-image, portrait or landscape, with an optional margin.
- 03
Download the PDF
Assembled by pdf-lib in the tab and saved straight to your device.
Where it earns its keep
Where images have to become a PDF
- Turning phone photos of a signed form into the single PDF an office insists on.
- Sending a set of receipts as one attachment instead of eleven images.
- Packaging scanned pages that arrived as separate JPEGs into a readable document.
- Submitting ID photographs to a portal that only accepts PDF uploads.
Questions
Images to PDF, answered
Will the text in my photos be searchable?
No. An image of text is still an image inside the PDF — there is no OCR here, so nothing is searchable, selectable or readable by a screen reader. If the document needs a text layer, it has to be recognised by OCR software before or after this step.
Does converting compress my images?
No, and that is deliberate. JPEG bytes are embedded unchanged and PNG data is carried losslessly, so the PDF is roughly the sum of your images plus a little structure. Compress the images first if the file size matters.
Are my images uploaded to build the PDF?
No. Everything is read from disk and assembled in this browser tab, which is the relevant detail when the images are photographs of a passport or a bank letter.
Which image formats can it take?
JPG and PNG. Those are the two raster formats PDF can carry natively, so embedding them needs no conversion. HEIC, WebP and TIFF are not accepted — convert them to JPG or PNG first, with the image tools on this site if you like.