PNG to PDF Converter
Convert PNG images to PDF and merge them into one document. Keep PNG quality lossless, or compress to JPEG to shrink the file — your choice, applied to all images or one at a time.
- 🔒 100% private — no uploads
- 🆓 Free, no watermark
- 📱 Works on any device
How to convert
- 1
Add your PNG images
Drag and drop your PNG images onto the converter, or click to browse. You can select as many as you like — they’re loaded straight into your browser, never uploaded to a server.
- 2
Edit & configure (optional)
Open any image in the built-in editor to crop, rotate, adjust or annotate it. Set the compression quality, max resolution and output format for all images at once, or override any single image.
- 3
Reorder the pages
Drag the thumbnails to put the pages in the exact order you want. Each image becomes one page in the final PDF.
- 4
Download your PDF
Click “Download PDF”. The merged, compressed PDF is generated on your device and saved instantly — no email, no sign-up, no watermark.
Why use PNG to?
100% private
All conversion happens locally in your browser using JavaScript. Your images are never uploaded, stored or seen by anyone.
Real compression control
Most converters give you a single “quality” toggle. Here you control quality, maximum resolution, output format and even a target file size — globally or per image — and see the estimated size before you export.
Built-in image editor
Crop, rotate, flip, adjust brightness/contrast, apply filters, add text or annotations and watermark — without leaving the page.
Works on any device
No install and no account. It runs in any modern browser on Windows, macOS, Linux, Android or iPhone.
PNG vs JPEG inside a PDF
PNG is lossless: it reproduces every pixel exactly, which is ideal for screenshots, logos, diagrams and anything with crisp text or flat colour. The trade-off is file size — a full-page PNG photo can be many times larger than the same image as JPEG. LocalTools lets you keep PNG output where sharpness matters, or switch a photographic PNG to JPEG to shrink it, all from the format selector.
Keeping screenshots and logos sharp
For screenshots, UI mockups and line art, leave the format on PNG and the resolution at original so text stays razor-sharp in the PDF. If you’re combining those with photographs, you can give each image its own setting: PNG for the diagrams, JPEG for the photos. Transparent areas are flattened onto a white page so nothing looks see-through in the final document.
Frequently asked questions
Are my images uploaded to a server?
No. Every step — decoding, editing, compression and PDF creation — runs entirely in your browser. Your files never leave your device, which is why it works even offline once the page has loaded.
What happens to PNG transparency?
Transparent areas are placed on a white page background in the PDF. Keep PNG output to preserve detail, or switch to JPEG for a smaller file.
How do I make the PDF smaller?
Lower the quality slider, reduce the maximum resolution (e.g. 1600px), choose JPEG output, or set a target size in megabytes. You can apply these to all images at once or override a single image. The estimated output size updates as you change settings.
Can I combine PNG and JPG in one PDF?
Yes — mix any supported formats in a single PDF. Each image becomes its own page.