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How to convert PNG to PDF online (single or multiple images)
You have a PNG screenshot, a scanned document, or a collection of images that need to be submitted as a PDF. Maybe it is a signed form, an ID scan for verification, or a set of design mockups for a client. The recipient expects a PDF, but you have image files.
iConvertOnline PNG to PDF converts one or multiple PNG images into a clean PDF document directly in your browser. Choose your page size, set margins, arrange images in order, and download. The entire process runs client-side, so your images never leave your device.
Key takeaways
Key Takeaways
Quick single image: Upload one PNG and convert instantly. The image is placed on a properly sized PDF page.
Multiple images: Upload several PNGs at once. Each image becomes a page in the resulting PDF, in the order you arrange them.
Client-side processing: Your images are not uploaded to any server. Conversion happens entirely in your browser.
Quality preserved: PNG to PDF conversion does not compress or re-encode your images. What goes in comes out at the same quality.
How to convert PNG to PDF
Open the tool: Go to iConvertOnline PNG to PDF.
Upload your images: Drag and drop one or more PNG files, or click to browse. You can select multiple files at once.
Arrange the order: If you uploaded multiple images, drag them into the sequence you want. The first image becomes page one.
Adjust settings: Choose page size (A4, Letter, or fit to image), orientation (portrait or landscape), and margins.
Convert: Click the convert button. The PDF is generated instantly in your browser.
Download: Save the PDF to your device.
Ready to try it? Takes less than 30 seconds — no sign-up needed.
Try it freePro tip: If your PNG images are scans of documents, choose A4 or Letter page size with small margins for the most professional result. If they are screenshots or design files, "Fit to image" preserves the original dimensions exactly.
Best settings for common scenarios
Scenario | What you have | Recommended settings |
|---|---|---|
Signed form or document | Scanned PNG of a signed page | A4/Letter, portrait, small margins |
ID or passport scan | Photo or scan of an ID card | A4, portrait, centered on page |
Multiple receipts | Several PNG receipt scans | A4, portrait, one per page |
Screenshots for documentation | Multiple UI screenshots | Fit to image or landscape |
Design mockups | Multiple design PNGs for review | Fit to image, no margins |
Photo portfolio | Collection of PNG images | A4, landscape, minimal margins |
Converting multiple PNGs into a single PDF
One of the most common use cases is combining several images into a multi-page PDF. Here is how to do it effectively with iConvertOnline:
Prepare your files first
Name files in order: Use numbered prefixes (01_front.png, 02_back.png, 03_signature.png) so they sort correctly when uploaded.
Check orientation: Make sure each image is rotated correctly before converting. You can use Rotate Image if any are sideways.
Crop unnecessary whitespace: If your scans have large white borders, crop them first using Crop Image for cleaner PDF pages.
Arrange pages after uploading
After uploading all files to PNG to PDF, drag the thumbnails to rearrange them. The order shown is the order they will appear in the final PDF. Take a moment to verify the sequence before converting.
PNG vs JPG: which should you convert to PDF?
Both PNG and JPG images can be converted to PDF, but they have different characteristics:
PNG uses lossless compression. Every pixel is preserved exactly. Best for screenshots, text-heavy images, logos, and anything with sharp edges or transparency.
JPG uses lossy compression. Files are smaller but some detail is lost. Best for photographs and images where file size matters more than pixel-perfect accuracy.
If you have JPG images instead of PNG, use iConvertOnline JPG to PDF which works the same way. If you have a mix of formats, convert them all to PNG first using JPG to PNG, then combine them into one PDF.
What to do after converting
Compress PDF: If the resulting PDF is large (common with high-resolution PNGs), compress it for easier sharing via email.
Merge PDF: Combine the image PDF with other existing PDFs. For example, merge your scanned signed page with the original unsigned document.
Protect PDF: Add password protection if the PDF contains sensitive information like ID scans or financial documents.
OCR PDF: If the PNG contained text (like a scanned document), run OCR to make the text searchable and selectable in the PDF.
Edit PDF: Add annotations, text, or stamps to the converted PDF.
FAQs
No. PNG to PDF conversion embeds the image directly in the PDF without re-encoding or compressing it. The image quality in the PDF is identical to the original PNG. If you want a smaller file size, use Compress PDF after conversion as a separate step.
Yes. Upload all your PNG files at once to PNG to PDF, arrange them in the desired order, and convert. Each image becomes a separate page in the resulting PDF.
For scanned documents and forms, use A4 (international standard) or Letter (US standard). For screenshots and design files, use "Fit to image" which creates a page that matches the exact dimensions of each image.
The PNG to PDF tool accepts PNG files. If you have a mix of formats, convert your JPG images to PNG first using JPG to PNG, then upload everything to PNG to PDF. Alternatively, convert each format separately and merge the resulting PDFs.
Yes. iConvertOnline PNG to PDF works in any modern mobile browser on both iOS and Android. Upload your images, arrange the order, and download the PDF. No app installation required.
No. The conversion runs entirely in your browser. Your PNG files never leave your device. This is important for sensitive images like ID scans, medical documents, or confidential business materials.
High-resolution PNGs can produce large PDFs. After conversion, use Compress PDF to reduce the file size. The Recommended compression level typically reduces size by 40-70% with minimal visible quality loss.
Related tools
PNG to PDF - Convert PNG images to PDF documents.
JPG to PDF - Convert JPG images to PDF documents.
JPG to PNG - Convert JPG images to PNG format.
Compress PDF - Reduce PDF file size after conversion.
Merge PDF - Combine multiple PDFs into one document.
Crop Image - Trim whitespace from images before converting.
Written by Zaggy K, founder of iConvertOnline. Last updated February 2026.
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Zaggy K
Updated Dec 4, 2025