1. Tool Introduction
This free online Image to PDF tool requires no installation and is ready to use upon opening. It safely and quickly merges multiple PNG and JPEG images into a single PDF file. You can freely drag and drop to adjust the image order, and the generated PDF pages will follow your arrangement exactly. All conversions run locally in your browser; files are never uploaded to any server, ensuring full privacy protection.
2. Application Scenarios
Create e-albums: Merge travel or daily photos into a PDF for easy sharing and printing.
Document archiving: Combine scans or images of contracts, invoices, and receipts into one PDF.
Portfolio organizing: Designers can merge work images into a PDF portfolio for submission and presentation.
Courseware making: Merge teaching materials and slide images into a PDF for students to download and read.
3. Operation Steps
Step 1: Select Images
Click the "Select Images" button and choose PNG or JPEG files from your computer. You can hold Ctrl (Windows) or Cmd (Mac) to select multiple files at once, or drag images directly into the upload area.
Step 2: Adjust Image Order (Drag & Drop Sorting)
After uploading, all images will be displayed as cards with thumbnails, filenames, and sizes. You can reorder them in two ways:
Drag sorting: Hold any image card and drag it up or down to the desired position.
Button adjustment: Click the up/down arrows on the right of each card to move quickly.
The top-to-bottom order in the list is the final page order of the PDF.
Step 3: Generate and Download PDF
After confirming the order, click the "Start Conversion" button. The tool will generate each image as a separate PDF page in order, keeping the original size. Once finished, click "Download PDF" to save the file to your device.
4. Key Features
100% free with no limits on usage times or functions.
Local browser processing; no file uploads for strong privacy.
Supports PNG and JPEG formats with automatic recognition.
Intuitive drag-and-drop sorting for easy page arrangement.
One image per page, preserving original aspect ratio and clarity.
No registration or login required; open and use instantly.
5. Notes
Only PNG and JPEG are supported currently; BMP, GIF, WEBP, etc., are not available.
Single image size is recommended under 50MB, total images under 100 to avoid browser lag.
PDF page size matches the original image; varying image sizes result in different PDF pages.
Ultra-high-resolution images (over 4000 pixels) may convert slower; please wait patiently.
6. FAQ
Q1: Can I upload both PNG and JPEG images?
A: Yes. The tool automatically recognizes formats and merges them properly into the PDF.
Q2: Will conversion reduce image quality?
A: No. The tool uses the pdf-lib library for lossless embedding; quality is identical to the original.
Q3: Will my uploaded images be stored or leaked?
A: No. All processing happens locally in your browser; files are never sent to any server.
Q4: Can I unify PDF page size?
A: Page size currently matches the original image; unified scaling is not supported yet. For consistent size, please adjust images first with an image editor.
Q5: What is the default filename of the downloaded PDF?
A: The default name is converted.pdf; you can rename it after saving.
7. Tips
Name images by page number in advance (e.g., 01.jpg, 02.jpg) for cleaner order after upload.
For more than 20 images, convert in batches to avoid high memory usage.
For e-albums or official documents, unify image sizes first for a tidier PDF.
If you have other questions, please leave a message in the comment area at the bottom of the page.
