Convert JPEG to PNG Online
Transform your Joint Photographic Experts Group (JPEG) files into universally supported Portable Network Graphics (PNG) images in seconds. Our converter runs 100% locally in your browser—your images are never uploaded to remote servers, ensuring complete privacy and blazing fast conversions.
JPEG vs PNG: Format Comparison
| Feature | JPEG | PNG |
|---|---|---|
| Compression Algorithm | Lossy (Compact file size) | Lossless (Pixel perfect) |
| Alpha Transparency | Not Supported (White background) | Supported (Transparent background) |
| Animation / Sequences | Static single frame only | Static single frame only |
| Browser Compatibility | 100% (Universal) | 100% (Universal) |
| Ideal Application | High-res photography and digital camera storage | Logos, UI design, screenshots, diagrams, and graphics requiring alpha transparency |
How to Convert JPEG to PNG (3 Easy Steps)
- Upload JPEG: Select your JPEG file by dragging and dropping it into the conversion box, or click Browse to choose from your device.
- Select PNG Output: Configure your output parameters. The tool is pre-set to convert to PNG. Adjust quality or dimension preferences if required.
- Instant Download: Click Convert and download your finished PNG instantly. Everything processes locally in your browser memory.
Technical Specifications
About JPEG
Full Name: Joint Photographic Experts Group
MIME Type: image/jpeg
Developer / Standard: Joint Photographic Experts Group
JPEG and JPG are the exact same format - the 3-letter extension was a limitation of early Windows 8.3 file systems.
About PNG
Full Name: Portable Network Graphics
MIME Type: image/png
Developer / Standard: PNG Development Group / W3C
PNG was invented in 1995 as a free, patent-unencumbered open-source replacement for GIF.
Frequently Asked Questions
How do I convert JPEG to PNG for free?
Simply drop your JPEG file into the converter box above, ensure PNG is selected as the output format, and click Convert. Your converted PNG file is generated instantly right in your browser.
Will converting JPEG to PNG reduce image quality?
No. PNG is a lossless format, so every pixel from your original JPEG image is preserved with zero compression artifacts.
Does converting JPEG to PNG preserve transparency?
Yes! PNG supports alpha transparency. If your source JPEG image has a transparent background, it will be preserved.
Is my file safe when converting on convertfiles.app?
100% safe. Unlike traditional cloud converters, convertfiles.app processes everything directly on your device using WebAssembly and HTML5 Canvas. Your files never leave your computer or phone.