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Cuisdev

PDF Converter

Turn images into a PDF or merge PDFs, all offline

  • Runs in your browser
  • No sign-up
  • Free forever
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How to use the PDF Converter

  1. 1

    Add files with the Add files button, drop them onto the list, or paste them. Mix images (JPG, PNG, WebP, GIF, BMP, AVIF) and PDFs freely.

  2. 2

    Put the pages in order by dragging rows, using the up and down arrows, or Sort by name. Rotate any image with its rotate button.

  3. 3

    For a PDF, optionally type a page range such as 1-3, 7 or 10- to include only those pages.

  4. 4

    Choose how image pages are made: fit the page to the image, or pick A4, Letter, Legal, A3 or A5 with orientation, margins and fit-inside or fill-page placement.

  5. 5

    Give the document a title and author if you like, then press Create PDF (or Ctrl+Enter). The file downloads immediately and can be saved again or opened in a new tab.

Features

  • Combines images and PDFs in any mix into one PDF, in the order you choose
  • Drag-and-drop reordering, sort by name, reverse, per-image rotation
  • Page ranges per PDF so you merge only the pages you need
  • Fit-to-image pages or standard A4, Letter, Legal, A3 and A5 with auto orientation, margins and fit or fill placement
  • Keeps original JPG and PNG data byte for byte, so photos are not re-compressed
  • Converts WebP, GIF, BMP and AVIF automatically, choosing PNG for transparency and JPEG otherwise
  • Sets the PDF title and author, with no watermark and no page limit
  • Up to 200 files and 300 MB per batch, processed entirely in your browser

One tool for images to PDF and merging

Most PDF sites split this into separate tools and upload your files to do it. This converter keeps both jobs together and keeps the files on your device. Add whatever you have, in whatever mix, arrange the pages, and create a single PDF. A stack of phone photos of receipts becomes an expense report; three quarterly PDFs become one annual document; a JPG cover page goes in front of a generated report.

The order of the list is the order of the pages. Drag rows to rearrange them, or use Sort when your files are already numbered in their names. The rotate button on an image fixes a sideways photo before it goes in.

How image pages are built

With Page size set to Fit to image, each page takes the image’s own proportions at 96 pixels per inch, so a 1920 by 1080 screenshot becomes a 20 by 11.25 inch page with no borders. That is the right choice for screenshots and photos that will be viewed on screen. For printing, choose a paper size: the image is centred inside the margins, either scaled to fit entirely or scaled to fill the page and cropped at the edges, and Auto orientation turns the page sideways for landscape pictures.

JPEG and PNG files are embedded exactly as they are, which keeps the PDF small and the quality untouched. Formats that PDF cannot hold directly, such as WebP, AVIF, GIF and BMP, are converted on a canvas first. Images with transparency are saved as PNG so the background stays clear; everything else becomes JPEG at the quality you choose.

Merging PDFs with page ranges

Each PDF in the list shows its page count and an optional range box. Leave it empty to include every page, or type ranges in the same style as a print dialog: 1-3, 7 picks four pages, 10- runs to the end, and -2 takes the first two. Pages are copied with their original size, rotation and content, including vector graphics and text, so the merged file stays searchable.

To split a PDF into parts or extract pages, use the PDF Split tool. To shrink a PDF that came out large, try PDF Compress, and to go the other way and turn pages into images use PDF to Image.

Frequently asked questions

How do I convert a JPG or PNG to PDF?
Add the image and press Create PDF. With Page size on Fit to image, the page is exactly the size of the picture at 96 dpi and the original JPG or PNG data is embedded unchanged, so there is no quality loss. Pick A4 or Letter instead if the PDF is going to be printed.
How do I merge several PDFs into one?
Add the PDFs, arrange them in order and press Create PDF. Every page of every file is copied in list order. To merge only some pages, type a range in the box under a file, for example 1-3, 7 or 10- for page 10 to the end.
Can I mix images and PDFs in the same document?
Yes. A scanned cover page as a JPG, a PDF report and a WebP chart can all be combined in one go. Each image becomes a page and each PDF contributes its pages, in the order shown in the list.
Will my photos be compressed?
Not when Keep original JPG/PNG data is on, which is the default: the bytes of JPEG and PNG files are embedded as they are. Other formats, and images you rotate, are drawn on a canvas and re-encoded, as PNG when they have transparency and otherwise as JPEG at the quality you set.
Why does an encrypted PDF fail?
A PDF that opens with a password cannot have its pages copied without that password. Remove the protection in the application that created it, or print it to a new PDF, and add that file instead. PDFs that are merely restricted from editing usually work.
Is there a size or page limit?
Each batch can hold up to 200 files and 300 MB in total, with any single file up to 100 MB. There is no page limit and no watermark. Very large batches take a few seconds because the work happens on your device rather than on a server.
Are my files uploaded?
No. Files are read, converted and combined with a JavaScript PDF library inside your browser. The finished PDF is created on your device and downloaded straight from memory, so contracts, scans and ID documents never leave your computer.

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