Image Converter
Convert JPEG to PNG and PNG to JPEG instantly in your browser. No server uploads—your images never leave your device.
Convert Your Image
Drop your image here or choose a file
JPEG and PNG supported, max 10MB
How to Convert Your Images
Select Your Format
Choose whether you want to convert to PNG or JPEG by clicking the format toggle button above.
Upload Your Image
Drag and drop your image onto the upload area, or click to browse and select a file from your device.
Download the Result
Preview your converted image, edit the filename if needed, and click Download to save it to your device.
When to Convert Between JPEG and PNG
JPEG and PNG are two of the most widely used image formats, but they serve different purposes. Understanding when to convert between them helps you get the best balance of quality, file size, and compatibility for your specific needs. See our full guide for a detailed comparison and use cases.
JPEG uses lossy compression, which means it discards some image data to achieve smaller file sizes. This makes JPEG ideal for photographs and complex images where minor quality loss is acceptable. PNG uses lossless compression, preserving every pixel exactly. This makes PNG the better choice for graphics, logos, screenshots, and any image where transparency or sharp edges matter.
Converting from JPEG to PNG is useful when you need to edit an image further without additional quality loss, or when you need to add transparency. Converting from PNG to JPEG is useful when you need to reduce file size for web use, email attachments, or storage.
JPEG vs PNG: Format Comparison
| Feature | JPEG | PNG |
|---|---|---|
| Compression | Lossy | Lossless |
| Transparency | Not supported | Supported (alpha channel) |
| File Size | Smaller for photos | Larger for photos, smaller for graphics |
| Best For | Photographs, complex images | Logos, screenshots, graphics, text |
| Color Depth | 24-bit (16.7M colors) | 24-bit or 32-bit with alpha |
| Editing | Quality degrades with each save | No quality loss on re-save |
| Web Use | Photos, backgrounds, banners | Icons, UI elements, overlays |
Common Use Cases
Web Development
Convert logos and icons to PNG for transparency support, or convert large background images to JPEG to improve page load times and performance scores.
Social Media
Some platforms compress JPEG uploads heavily. Converting to PNG before uploading can preserve sharper text and graphics in your posts and profile images.
Print and Design
Convert images to PNG when you need lossless quality for print materials, or convert to JPEG when submitting photos to services that require smaller file sizes.
Documentation and Screenshots
Screenshots with text and UI elements look sharper as PNG. Convert from JPEG to PNG before annotating or editing to avoid compression artifacts around text.
About Transparency in Image Conversion
A common misconception is that converting a JPEG to PNG will add transparency to the image. This is not the case. Since JPEG does not support transparency, there is no transparency data to preserve or create during conversion. The resulting PNG will have the same opaque appearance as the original JPEG.
However, if you start with a PNG that has transparent areas and convert it to JPEG, the transparent regions will be filled with a solid color (white by default in our converter). This is because JPEG simply cannot store transparency information. If you need to preserve transparency, keep your image in PNG format.
Privacy and Security
Your images never leave your device. Unlike most online converters that upload your files to a remote server for processing, this tool performs all image conversion directly in your browser using the HTML5 Canvas API. For more details, see our FAQ.
No images are transmitted over the internet. No files are stored on any server. No data is collected from your images. The conversion happens entirely on your computer, making this tool safe for sensitive or confidential images.
This client-side approach also means conversions are faster since there is no upload or download step, and the tool works even when you have a slow or unreliable internet connection.