Why convert JPG to PDF?
JPEG is the universal format for digital photos, but sending a stack of individual JPG files as email attachments or uploading them to a document portal is inconvenient — recipients have to download each file separately and reassemble the sequence themselves. A PDF bundles every photo into one document that opens on any device, preserves the page order you set, and is accepted by nearly every government portal, HR system, and printing service that asks for a document rather than a photo.
Common scenarios: submitting scanned receipts for expense reports, packaging a set of property photos for a real-estate listing, combining inspection photos into a single report, attaching event photos to a client deliverable, or printing a home-made photo book at a copy shop. Converting JPG to PDF also makes it easy to share a multi-photo set via a single link without requiring the recipient to have an image viewer app.
How to convert JPG to PDF online — step by step
- Upload your JPG photos — drag JPEG files onto the upload zone or click to browse. Add up to 30 photos at once.
- Set the page order — photos appear in the order you added them. Use the up and down arrows to reorder them until the sequence is correct.
- Choose a page size — A4 (210 × 297 mm, used worldwide), US Letter (8.5 × 11 in, North America), or Fit to image (PDF page matches each photo exactly). For A4 and Letter, pick portrait or landscape orientation.
- Click Convert — jsPDF builds the PDF inside your browser. No data leaves your device.
- Download — click the Download button to save the finished PDF.
Converting JPG to PDF on Windows, Mac, iPhone, and Android
Every major platform has a built-in method, but each has trade-offs:
| Platform | Built-in method | Limitation |
|---|---|---|
| Windows 10/11 | Print → Microsoft Print to PDF | One image at a time; fixed page size |
| macOS | Preview → File → Export as PDF | Needs specific steps to avoid TIFF output |
| iPhone (iOS) | Share → Print → pinch to open PDF | One photo only; US Letter fixed |
| Android | Share → Print → Save as PDF | One photo only; variable quality |
| Any browser | This tool | Up to 30 photos; A4 / Letter / Fit |
For batch conversions or when you need control over page size, a browser-based tool is faster than any platform's built-in option. No install required, works on any OS.
How to combine multiple JPG photos into one PDF
Drop all your JPGs at once onto the upload zone. Each photo is shown in a numbered list with preview thumbnails. Use the arrow buttons to rearrange them — the number on the left shows the final page number in the PDF. When the order is right, click Convert. Every photo becomes one page, in sequence, in the downloaded PDF.
For very large collections (more than 30 photos), split into groups: convert the first 30, download the PDF, clear the tool, then add the next batch. You can merge the resulting PDFs later using Preview on Mac (drag thumbnails into one document), Adobe Acrobat, or any free online PDF merge tool.
How JPG quality is handled in the PDF
Each JPEG is decoded in the browser and re-embedded into the PDF at 92% JPEG quality. At that level, the visual difference from the original is imperceptible at normal print or screen sizes. The pixel dimensions of the source photo are fully preserved — this tool does not downscale images. A 4000 × 3000 px photo stays at that resolution inside the PDF.
If you need a smaller PDF file, the most effective approach is to reduce the resolution of the source photos before converting. A 1800 × 1200 px image produces a PDF roughly one-fifth the size of a 4000 × 3000 px original at the same quality setting. Use the Image Resizer to scale photos down, or the JPEG Compressor to reduce file size with a quality slider, then bring the results here.
Page size: A4, US Letter, and Fit to image
The page size determines how each photo is placed in the PDF:
- A4 (210 × 297 mm) — the global standard, used in Europe, Australia, and most of the world. Best for documents intended for international printing.
- US Letter (8.5 × 11 in) — the North American standard. Choose this if the PDF will be printed on US printers or submitted to US government portals.
- Fit to image — each PDF page is exactly the same size as the corresponding photo. Useful for digital-only PDFs where print size does not matter, or when you want the PDF to precisely match your photo dimensions.
For A4 and Letter, each photo is scaled to fill as much of the page as possible while keeping its original aspect ratio, with a small margin on all sides. No cropping occurs. If you need to crop photos to a specific aspect ratio before adding them to the PDF, use the Image Cropper first.
HEIC photos from iPhone — convert first
iPhones save photos in HEIC format by default. This tool accepts JPG and JPEG only. If your photos have a .heic extension, run them through the HEIC to JPG converter first. That tool converts batches of HEIC files to JPEG in your browser with no upload — the resulting JPGs can then be dropped directly into this converter.
Privacy: your photos stay on your device
All processing runs entirely inside your browser using the Canvas API to decode images and jsPDF to assemble the PDF document. Your photos are never uploaded to any server — there is no upload step, no temporary server file, and no activity log. The generated PDF exists only in browser memory until you click Download, at which point it is saved to your device. Closing the tab clears everything.
Need to convert PNG or WEBP images to PDF as well? Use the Image to PDF converter, which accepts JPG, PNG, and WEBP in the same batch.