Blog/How to Combine Images into a PDF Online
PDF4 min readJune 3, 2027

How to Combine Images into a PDF Online

ZT

ZenTools Editorial

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Combining images into a PDF is one of those tasks that comes up constantly: scanning a multi-page form with your phone and needing to submit it as one file, compiling photos into a presentation document, sending a series of screenshots as a structured report, or packaging design mockups for client review.

What the conversion produces

When you combine images into a PDF, each image becomes a single page. The PDF page size matches the image dimensions — a landscape photo becomes a landscape page, a portrait screenshot becomes a portrait page. Images are embedded at full quality using the jsPDF library. No additional compression is applied to the images during PDF creation.

How to combine images into a PDF in your browser

  1. 1Go to tools.zenwebx.com/images-to-pdf.
  2. 2Drop your images (JPG, PNG, or WebP — up to 10 MB total).
  3. 3Drag images to reorder them into the final page sequence.
  4. 4Click Create PDF and download.

Processing happens in your browser using jsPDF. Nothing is uploaded. The output is a standard PDF 1.3 document that opens in any PDF viewer — Adobe Acrobat, Preview, Chrome, or any mobile device.

Tips for consistent results

  • Rename your image files with a numeric prefix (01_, 02_, 03_) before uploading so they arrive in the right order even if your file manager sorts them differently.
  • Images of different orientations (landscape + portrait) each get an appropriately sized page — the PDF is not forced to a single page size.
  • Keep total file size under 10 MB. For a batch of phone photos, resize them first using the Image Compressor if needed.
  • WebP images are supported and tend to be smaller than JPEG at the same quality — useful when you're near the 10 MB limit.

Combine your images into a PDF

Drag to reorder pages, then create and download. No upload, runs in your browser.

Open Images to PDF