How do I convert JPG images to PDF for free?

Upload your JPG files to AlteredIdea Image to PDF, arrange them in the desired order, then click Convert. The PDF downloads immediately: no account needed.

Can I convert multiple images into one PDF?

Yes. You can upload as many JPG, PNG, or WEBP images as you like. Each image becomes one page, and you can drag to reorder them before converting.

Are my images uploaded to a server?

No. All conversion happens locally in your browser using WebAssembly. Your images never leave your device.

What image formats are supported?

JPG/JPEG, PNG, and WEBP are supported. For WEBP images, the tool converts them to PNG via an HTML5 canvas before embedding.

Will the image quality be reduced in the PDF?

No. Images are embedded at full resolution. The PDF page is sized to match the original image dimensions.

Can I reorder images before converting?

Yes. Drag and drop the image thumbnails to rearrange the page order before clicking Convert.

How do I convert PNG screenshots to PDF on iPhone?

Open AlteredIdea in Safari on your iPhone, tap to upload images from your Camera Roll or Files, arrange them, and download the PDF.

Is there a limit on the number of images?

There is no hard limit. Very large or high-resolution images may use more browser memory, but typical photo sets convert without issues.

Can I add images to an existing PDF?

This tool creates a new PDF from images. To add pages to an existing PDF, use the PDF Merger tool alongside this one.

Does the output PDF have a watermark?

No. AlteredIdea never adds watermarks to your documents.

Image to PDF

Convert JPG, PNG, and WEBP images to a PDF. Each image becomes one page.

Drop images here or click to browse

JPG, PNG, WEBP · Multiple files

How it works

Each image is embedded as a full page in the PDF, sized to match the image dimensions.

How to convert JPG or PNG images to PDF online for free

AlteredIdea's Image to PDF converter lets you combine any number of photos, screenshots, or scanned images into a single PDF document. The tool supports JPG, PNG, and WEBP formats, and each image is placed on its own page at its natural dimensions: no cropping or resizing applied.

All processing happens entirely in your browser using the pdf-lib WebAssembly library. There are no uploads, no file size limits imposed by a server, and no watermarks added to the output. This makes it ideal for combining scanned receipts, turning a photo set into a portfolio PDF, or packaging screenshots into a single shareable document.

How to turn images into a PDF: step by step

1
Upload your images
Drop JPG, PNG, or WEBP files onto the upload zone, or click to open the file picker. You can add multiple files at once.
2
Reorder pages
Drag and drop the image thumbnails to set the order they will appear in the PDF.
3
Remove unwanted images
Hover over any thumbnail and click the remove button to exclude it from the PDF.
4
Click Convert to PDF
Processing happens immediately in your browser. No upload progress is needed.
5
Download your PDF
The PDF file downloads automatically and can be opened in any PDF viewer.

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Frequently Asked Questions

How do I convert JPG images to PDF for free?: Upload your JPG files to AlteredIdea Image to PDF, arrange them in the desired order, then click Convert. The PDF downloads immediately: no account needed.
Can I convert multiple images into one PDF?: Yes. You can upload as many JPG, PNG, or WEBP images as you like. Each image becomes one page, and you can drag to reorder them before converting.
Are my images uploaded to a server?: No. All conversion happens locally in your browser using WebAssembly. Your images never leave your device.
What image formats are supported?: JPG/JPEG, PNG, and WEBP are supported. For WEBP images, the tool converts them to PNG via an HTML5 canvas before embedding.
Will the image quality be reduced in the PDF?: No. Images are embedded at full resolution. The PDF page is sized to match the original image dimensions.
Can I reorder images before converting?: Yes. Drag and drop the image thumbnails to rearrange the page order before clicking Convert.
How do I convert PNG screenshots to PDF on iPhone?: Open AlteredIdea in Safari on your iPhone, tap to upload images from your Camera Roll or Files, arrange them, and download the PDF.
Is there a limit on the number of images?: There is no hard limit. Very large or high-resolution images may use more browser memory, but typical photo sets convert without issues.
Can I add images to an existing PDF?: This tool creates a new PDF from images. To add pages to an existing PDF, use the PDF Merger tool alongside this one.
Does the output PDF have a watermark?: No. AlteredIdea never adds watermarks to your documents.

AlteredIdea vs alternatives

vs Smallpdf / ILovePDF: Those services upload your files to their servers. AlteredIdea processes everything in your browser: your files never leave your device.

vs Adobe Acrobat online: Adobe requires an account and has file size limits on the free tier. AlteredIdea is unlimited and account-free.

vs desktop software: No installation, no licence fees, no OS dependency. Works on any device with a browser.

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