OptiDrop

Convert JPG Images to PDF — Free Online PDF Merger

Combine multiple JPG, PNG, or WebP images into a single PDF document. Choose A4, US Letter, or auto-fit page sizes. Reorder pages with drag and drop. Everything runs in your browser — your files never leave your device.

Drop Images Here or Tap to Browse

Supports JPG, PNG, WebP (Max 50 images)

No upload? Seriously. Files never leave your device.
100% Local — your file never leaves this device

What to do next →

Compress the PDF

Reduce the merged PDF file size for easy sharing via email.

Extract specific pages

Pull out individual pages from a PDF as JPG images.

Convert JPG Images to PDF — Free Online, No Upload Required

OptiDrop's JPG to PDF Converter lets you combine multiple JPG, PNG, and WebP images into a single, professionally formatted PDF document. Whether you need to merge scanned documents, combine receipts, create a photo album, or prepare images for printing, this tool handles it all — completely free and entirely in your browser. Your images are never uploaded to any server, making it safe for sensitive documents like contracts, IDs, and personal photos.

Flexible Page Sizes and Layout Options

Choose from standard A4 or US Letter page sizes, or let the tool auto-fit each page to match the image's original dimensions. You can set the orientation to portrait, landscape, or auto-detect based on each image's aspect ratio. Adjustable margins (0mm, 5mm, 10mm, or 20mm) give you full control over the final layout. Drag and drop images to reorder them, or use the arrow buttons to fine-tune the page sequence.

Merge Up to 50 Images into One PDF

Need to combine a large batch of images? OptiDrop supports merging up to 50 images in a single operation. The tool processes each image sequentially, showing real-time progress, and outputs a clean PDF with no watermarks. Perfect for students submitting assignments, professionals preparing reports, or anyone who needs to convert multiple images into a single shareable document.

Frequently Asked Questions

Open the JPG to PDF tool, drop your images into the upload zone, arrange them in the desired order using drag and drop or the up/down buttons, choose your page size and orientation, then click Generate PDF. Your merged PDF will be ready to download instantly.
You can merge up to 50 images into a single PDF document. This limit ensures smooth performance in your browser. Supported formats include JPG, PNG, and WebP.
OptiDrop supports three page size options: A4 (210 x 297 mm), US Letter (216 x 279 mm), and Auto-fit which matches each page to the image's original dimensions. You can also choose portrait, landscape, or auto orientation.
Yes. After adding your images, you can reorder pages by dragging and dropping them in the queue, or by using the up and down arrow buttons next to each image. You can also remove individual images before generating the PDF.
Yes. OptiDrop's JPG to PDF converter is 100% free with no hidden fees, no sign-up requirements, and no watermarks added to your PDF. Everything runs locally in your browser.

JPG to PDF Converter — About This Tool

OptiDrop JPG to PDF Converter merges multiple JPG, PNG, or WebP images into a single, professionally formatted PDF document. It is ideal for students submitting assignments, professionals preparing reports, or anyone who needs to combine scanned pages, receipts, or photos into one shareable file. Choose from A4, US Letter, or auto-fit page sizes with adjustable margins. Everything runs locally in your browser — your images are never uploaded to any server.

How to Use JPG to PDF Converter

  1. Drag and drop your images into the upload zone, or tap to browse. You can add up to 50 JPG, PNG, or WebP files.
  2. Reorder the images by dragging them or using the up/down arrow buttons to set the page sequence you want.
  3. Choose your page size (A4, US Letter, or Auto-fit), orientation (portrait, landscape, or auto), and margin width.
  4. Click Generate PDF, wait for the progress bar to complete, then download your merged PDF document instantly.

Frequently Asked Questions

How many images can I merge into a single PDF?

You can merge up to 50 images into one PDF document in a single operation. This limit ensures smooth performance in your browser without running into memory issues on most devices. Supported input formats include JPG, PNG, and WebP. For example, if you have 30 scanned pages of a document, you can add all of them, arrange the correct order, and generate a single PDF in one click. All processing happens locally, so even large batches of images never leave your device.

What page sizes and orientation options are available?

OptiDrop supports three page size modes: A4 (210 x 297 mm, the international standard), US Letter (216 x 279 mm, common in North America), and Auto-fit, which matches each page to the image's original pixel dimensions. You can choose portrait, landscape, or auto orientation — auto detects each image's aspect ratio and rotates the page accordingly. Margin options include 0mm (full bleed), 5mm, 10mm (default), and 20mm. These options give you full control over the final layout of your PDF.

Does the converter maintain the original image quality?

Yes. OptiDrop embeds your images into the PDF at their original resolution without recompressing them. The output PDF preserves the full quality of your source images. If you choose the Auto-fit page size, each page matches the image dimensions exactly, so there is no scaling or cropping. This matters when you are creating PDFs from high-resolution scans or photographs where detail is important, such as document archives or photo portfolios. Your images never leave your browser during the entire conversion process.

Is there a file size limit for the output PDF?

There is no hard file size limit on the output PDF, but since all processing happens in your browser using JavaScript, the practical limit depends on your device's available memory. Most modern smartphones and computers can comfortably handle 50 images without issues. If your merged PDF turns out larger than expected, you can use OptiDrop's PDF Compressor tool to reduce the file size for easier sharing via email or messaging apps. Both tools run entirely in your browser with no file uploads.