Are my uploaded photos safe and private?
Yes. Your photos are never uploaded. Decoding, resizing and PNG encoding all happen locally in your browser using HTML5 Canvas.
Batch Converter & Compressor
JPGToPNG
Free Online JPG to PNG Converter
100% Free, Secure & Browser-Based Batch JPG to PNG Converter.
- ⚡ Instant batch conversion
- 🔒 Files never leave your device
- 🗜️ PNG compression
- 📦 Download all as ZIP
JPG to PNG converter tool
Drag & drop JPG / JPEG images here
or browse files · paste with Ctrl/⌘+V · batch supported
Processed locally in your browser — nothing is uploaded.
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Your image previews will appear here. Add one or more JPG files to get started.
How do I convert JPG images to PNG online?
JPGToPNG converts JPEG photos to PNG in four quick steps — no software, no account, and no uploads.
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1
Add your JPG files
Drag and drop, browse, or paste one or many JPG/JPEG images.
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2
Tune the settings
Pick compression, a transparent or hex color background, and new dimensions.
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3
Convert in the browser
The HTML5 Canvas engine re-encodes every image as PNG on your device.
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4
Download PNGs or ZIP
Save each PNG individually or the whole batch as a single ZIP archive.
What is the difference between JPG and PNG formats?
JPG (JPEG) is a lossy format built for small photo files. PNG is a lossless format that keeps every pixel and supports transparency. Converting JPG to PNG stops further quality loss when you edit and lets you add transparent areas.
| Feature | JPG / JPEG | PNG |
|---|---|---|
| Compression | Lossy | Lossless (optional color reduction) |
| Transparency | Not supported | Full alpha channel |
| Best for | Photos, web galleries | Logos, graphics, screenshots, text, editing |
| Re-saving | Loses quality every save | No quality loss |
| File size | Smaller for photos | Larger for photos, small for flat graphics |
Why use JPGToPNG?
Batch image converter
Convert dozens of JPEG files to PNG at once and download them together in one ZIP archive powered by JSZip.
Smart PNG compression
Lower the quality slider to quantize colors and shrink PNG files, or keep 100% for a pixel-perfect lossless copy.
Transparent backgrounds
Turn a plain white (or any) background transparent, or pad resized images with a custom hex color.
Resize while converting
Keep the original size, set a custom width and height, or scale by percentage with high-quality smoothing.
Free, fast & works offline
No sign-up, no watermarks, no limits. Once loaded, the converter keeps working even without an internet connection.
Frequently Asked Questions
How do I convert JPG images to PNG online?
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Drag and drop your JPG or JPEG files onto the upload zone above, adjust the optional settings, then click Convert All to PNG. Download each PNG with its own button, or use Download All as ZIP to save the whole batch at once.
What is the difference between JPG and PNG formats?
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JPG uses lossy compression for small photo files and has no transparency. PNG is lossless, preserves every pixel and supports an alpha channel, making it the better choice for logos, graphics, screenshots and images you plan to keep editing.
Are my uploaded photos safe and private?
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Completely. JPGToPNG has no server-side processing — your images are converted inside your own browser and never uploaded anywhere.
Can I convert multiple JPG files to PNG at once?
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Yes. Add as many images as you like; they are converted in one batch and can be downloaded together as a ZIP file.
Why is my PNG file bigger than the original JPG?
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PNG stores pixels losslessly, so detailed photos usually grow in size. Lower the PNG Quality & Compression slider to reduce colors, or resize the image, to get much smaller PNG files.
Can I make the background of my JPG transparent?
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JPGs have no transparency, but you can enable Make a color transparent, choose a color such as white, and set a tolerance. Matching pixels become transparent in the PNG output.
Is JPGToPNG free?
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Yes — 100% free with no sign-up, no watermarks and no file count limits.