JPG to PDF
Add your images, set the order and page size, then create a PDF. Everything runs in your browser, so your photos never leave your device.
Reviewed by the ToolNestr Editorial Team — July 2026
How image-to-PDF conversion works
Image-to-PDF conversion renders each image onto a PDF page using canvas rendering. The image is drawn onto an off-screen canvas, then embedded into a new PDF page using pdf-lib's image embedding methods.
Each image becomes one page in the PDF. In "Fit to image" mode, the page dimensions match the image exactly. In "A4" mode, the image is scaled to fit within A4 dimensions while preserving its aspect ratio with optional margins.
Worked example
Converting three JPG photos into a single PDF document.
What different image sizes mean
Larger images produce higher quality PDF pages but use more memory during conversion.
Photographer
Creates portfolio PDFs from their best shots to share with clients in a professional format.
Teacher
Compiles scanned worksheets and handouts into a single PDF for classroom distribution.
Business professional
Turns photos of receipts and business cards into an organised PDF archive for expense reporting.
Artist
Combines high-resolution artwork images into a single PDF portfolio for gallery submissions.
| Format | Best for | Embedding method |
|---|---|---|
| JPG / JPEG | Photos, scans, colourful images | Embedded directly as JPEG |
| PNG | Diagrams, screenshots, text, logos | Embedded directly as PNG |
| WebP | Modern web-optimised images | Converted to PNG first |
| GIF | Simple animations, low-colour images | Converted to PNG first |
| BMP | Uncompressed legacy images | Not supported, convert first |
| TIFF | High-quality print, scanned archives | Not supported, convert first |
| HEIC | iPhone / Apple device photos | Not supported, convert first |
How to use the JPG to PDF converter
Add your images
Click the upload area and select one or more images from your device.
Choose page size and order
Select "Fit to image" or "A4" and use arrows to rearrange your images.
Create and download
Click "Create PDF" and your document downloads automatically.
Tips for the best PDF output
Choose the right page size
Use "Fit to image" for borderless pages that match each image's original dimensions. Use "A4" when preparing for standard office printing.
Order images before creating
Use the up/down arrows on each thumbnail to arrange images in the correct sequence before clicking "Create PDF". The order shown is the order in the PDF.
Mix formats freely
JPG, PNG and WebP images can all be added together. The tool handles each format correctly and combines them into one seamless PDF.
Why image-to-PDF quality matters
The quality of your output PDF depends directly on the resolution and format of your source images. High-resolution images produce PDF pages that are suitable for professional printing, while low-resolution images may appear pixelated when viewed at full size. Understanding the relationship between image resolution and output quality helps you choose the right source material for your document.
JPG images use lossy compression, which means some detail is discarded to reduce file size. When a JPG photo is embedded into a PDF, the compression artifacts from the original image become part of the PDF page. For photographs and colourful graphics, this loss is usually imperceptible. For text-heavy images, screenshots, or diagrams, PNG format preserves crisp edges and sharp text without compression artifacts.
The choice between "Fit to image" and "A4" page size also affects perceived quality. In "Fit to image" mode, each page matches the exact pixel dimensions of the source image, so no scaling occurs and the image appears at its native resolution. In "A4" mode, images are scaled down to fit within A4 boundaries, which can cause slight softness if the image is much larger than the page. Images smaller than A4 are not stretched, so they appear centred with white margins.
For printed documents, aim for source images of at least 150 DPI at the intended print size. A standard A4 page at 150 DPI requires an image approximately 1240 by 1754 pixels. Images below this resolution will look soft in print, while images at 300 DPI or higher produce sharp, professional results. The tool embeds images at full resolution without downsampling, so your source quality directly determines your output quality.
Limitations and considerations
Image-to-PDF conversion has several practical limitations. Very large images — those exceeding 24 megapixels or 4000 pixels on any side — consume significant browser memory during canvas rendering. If you experience slow performance or browser warnings, try reducing the image dimensions before adding them to the tool.
Format support is limited to JPG, PNG, and WebP images that can be automatically converted. Other common formats such as HEIC (Apple devices), BMP, TIFF, and GIF are not directly supported. If your images are in these formats, convert them to JPG or PNG using photo editing software or an online converter before adding them to the tool. The tool will indicate an error if it encounters an unsupported format.
The "Fit to image" mode creates pages with non-standard dimensions if your images have unusual aspect ratios. A panoramic photo, for example, would produce a very wide page that may display awkwardly in standard PDF viewers. In such cases, "A4" mode is recommended to normalise page sizes while preserving the image aspect ratio through letterboxing.
Each image becomes exactly one page in the output PDF. There is no option to place multiple images on a single page or to create contact sheets. If you need multiple images per page, consider using a desktop publishing tool or image layout software after converting your images to PDF format.
Frequently asked questions
Which image formats are supported?
JPG and PNG are embedded directly. Other formats like WebP are converted automatically, so you can mix image types in one PDF.
Are my images uploaded?
No. The conversion happens entirely in your browser — your images stay on your device.
Can I choose the page size?
Yes. Pick "Fit to image" for a borderless page that matches each image, or "A4" to place each image on a standard page.
Can I put several images in one PDF?
Yes — add as many as you like and arrange their order. Each image becomes one page.
Can I mix JPG and PNG in the same PDF?
Yes. The tool handles both formats and will automatically embed them correctly on each page.
What if my image is very large?
Large images are scaled to fit the page. Use "Fit to image" mode to keep the original dimensions.
Can I reorder images after adding them?
Yes — use the up/down arrows on each image thumbnail to rearrange them before creating the PDF.
Will the image quality be reduced?
No. Images are embedded at full resolution in the PDF. The quality you see is the quality you get.
Can I add images one at a time?
Yes. Click the upload area again to add more images. They are appended to the existing list.
Does the tool support HEIC or BMP?
HEIC and BMP files are not directly supported. Convert them to JPG or PNG first, then add them to the tool.