This free online tool converts your JPG images to PNG format, applying proper compression methods. Unlike other services, this tool does not ask for your email address, offers mass conversion and allows files up to 50 MB.
JPG to PNG Converter
Transform your JPEG images into high-quality PNG format instantly with transparency support and lossless compression
Convert JPG to PNG Online
What is JPG (JPEG)?
JPG (or JPEG, which stands for Joint Photographic Experts Group) is one of the most widely used image formats on the internet, designed specifically for storing and compressing photographic images with millions of colors.
JPG files use lossy compression, meaning they discard some image data to reduce file size, making them ideal for web use and digital photography where smaller file sizes are prioritized over absolute image perfection.
The compression ratio can typically be adjusted, with higher compression resulting in smaller file sizes but lower image quality, while lower compression maintains better quality at the expense of larger files.
What is PNG?
PNG (Portable Network Graphics) is a raster image format that uses lossless compression, meaning it preserves all the original image data without any quality degradation, making it perfect for graphics, logos, and images requiring transparency.
Unlike JPG, PNG supports alpha channel transparency, allowing parts of an image to be completely or partially transparent, which is essential for layering graphics, logos, and icons over different backgrounds.
PNG files maintain their quality through multiple saves and edits, making them the preferred format for professional design work, screenshots, infographics, and any image containing text or sharp lines.
JPG vs PNG: Key Differences
Feature | JPG (JPEG) | PNG |
---|---|---|
Compression Type | Lossy (discards data) | Lossless (preserves all data) |
File Size | Smaller (efficient compression) | Larger (no data loss) |
Transparency Support | ❌ Not supported | ✅ Full alpha channel support |
Image Quality | Good for photos, may show artifacts | Excellent, preserves sharp details |
Best Use Cases | Photographs, web images, complex scenes | Logos, graphics, text, screenshots |
Color Support | 24-bit (16.7 million colors) | 24-bit or 48-bit with alpha channel |
Why Convert JPG to PNG?
🎯 Transparency Support
The primary reason to convert JPG to PNG is to add transparency support, allowing images to have transparent backgrounds that blend seamlessly with any background color or pattern, essential for logos and graphic overlays.
📊 Lossless Quality Preservation
PNG uses lossless compression, which means the converted image maintains its current quality without further degradation, even through multiple edits and saves, making it ideal for iterative design work.
✨ Better for Graphics and Text
PNG format excels at preserving sharp edges, crisp text, and fine details in graphics, screenshots, and illustrations, preventing the blurring and artifacts that can occur with JPG compression.
🎨 Professional Design Workflow
PNG is the standard format for professional design software and web development, enabling better layering, masking, and compositing capabilities for creating sophisticated visual projects.
Technical Details of Conversion
Compression Algorithms
JPG files utilize DCT (Discrete Cosine Transform) compression, which merges similar pixels together and discards less noticeable information to achieve significant file size reduction, particularly effective for photographic images with smooth color gradients.
PNG files employ LZW (Lempel-Ziv-Welch) or DEFLATE lossless compression algorithms, which compress data by finding and eliminating redundant patterns without discarding any image information, maintaining perfect fidelity to the original.
Quality Considerations
Important: Converting a JPG to PNG cannot restore quality that was already lost during the original JPG compression—the conversion simply preserves the current state in a lossless format for future edits.
If the original JPG was heavily compressed (showing visible artifacts or pixelation), the converted PNG will retain these imperfections, though it will prevent further quality degradation from additional saves or edits.
File Size Impact
Converting from JPG to PNG typically results in a 5-10× larger file size due to PNG's lossless compression, which stores all pixel data without discarding information—for example, a 200KB JPG may become a 1.5-2MB PNG file after conversion.
When to Use JPG vs PNG
📸 Use JPG For:
- ✓ Photographs and complex images with many colors
- ✓ Website images where fast loading is critical
- ✓ Digital photography and online galleries
- ✓ Email attachments requiring smaller file sizes
- ✓ Social media posts and online sharing
🎨 Use PNG For:
- ✓ Logos and branding materials with transparency
- ✓ Screenshots and screen captures
- ✓ Graphics with text, charts, or diagrams
- ✓ Images requiring multiple edits without quality loss
- ✓ Web design elements like icons and buttons
Benefits of Converting JPG to PNG
🔒 Quality Locking
Prevents further quality degradation from future saves and edits
🎭 Transparency Options
Enables adding transparent backgrounds for versatile design use
💎 Sharp Details
Maintains crisp edges and fine details in graphics and text
🔧 Better Editing
Ideal for iterative design work without cumulative quality loss
🌐 Web Compatibility
Universal browser support for modern web design applications
📐 Professional Standard
Industry-standard format for graphic design and branding work
Common Use Cases for JPG to PNG Conversion
Logo Design & Branding
Converting company logos from JPG to PNG allows removing white backgrounds and creating transparent versions that work seamlessly across websites, presentations, and marketing materials with varied background colors.
Web Design Elements
Web designers convert icons, buttons, and navigation elements to PNG for crisp rendering at various screen resolutions while maintaining transparency for layering over diverse page backgrounds and themes.
Graphic Editing Workflows
Professional designers convert images to PNG before extensive editing to prevent the cumulative quality loss that occurs with repeated JPG saves, ensuring the final product maintains maximum detail and clarity.
E-commerce Product Overlays
Online retailers convert product images to PNG to create clean overlays with transparent backgrounds for product badges, watermarks, and promotional graphics that layer attractively over product photography.
⚠️ Important Considerations
🚫 Cannot Restore Lost Quality:
Converting a low-quality or heavily compressed JPG to PNG will not magically improve the image quality—it simply preserves the current state without further degradation.
📊 Expect Larger File Sizes:
PNG files are typically 5-10 times larger than their JPG equivalents, which may impact website loading speeds and storage requirements—optimize accordingly.
🎯 Not Ideal for All Photos:
High-resolution photographs are generally better kept as JPG unless you specifically need transparency or plan extensive editing—PNG's larger size offers little benefit for complex photographic images.
🔄 One-Way Quality Path:
Always keep your original highest-quality version—converting JPG→PNG→JPG will result in additional quality loss during the final JPG conversion step.
About the Author
Adam
Co-Founder @RevisionTown
Math Expert specializing in diverse international curricula including IB (International Baccalaureate), AP (Advanced Placement), GCSE, IGCSE, and various other educational programs worldwide.
Connect on LinkedInJPG to PNG Conversion
Files that end in .JPG and .PNG are image files. They contain visual information, usually photographs, drawings, screenshots, or other types of media.
However, JPGs (or sometimes JPEGs) are different from PNGs. With a JPG, you have a file with lossy quality. This means that image compression has removed some of its overall quality. When you create a JPG, you can choose how lossy it gets. Generally, the higher the quality of the image, the bigger its filesize, so compressing an image can help make it take up less space on your hard drive.
Meanwhile, PNGs are lossless, which means they are not compressed. PNGs also support transparency, which JPGs do not. Transparency allows for specific pixels in the image to be empty, which can be useful when placing one image on top of another. PNGs, unfortunately, do not support CMYK color spaces, though, which makes them not as effective for printing.
Why should you convert JPG to PNG?
The biggest reason to convert JPG files to PNG is to create transparency support. If you have an image with a lot of white space that you’d like to remove in editing software, you won’t be able to do it. JPGs must have color information within every pixel, so empty pixels are usually filled with black or white colors.
PNGs also don’t get compressed. So if you’re uploading a PNG to a service that compresses images, your PNG upload will look the same as it does on your computer. This can be helpful if you have a very special or specific image that you want to be preserved.
However, you should beware of converting JPG to PNG if you want to eventually print the image. Since PNG files don’t contain CMYK information, printing them is tricky. We’d advise keeping the original JPG if you think you might want to print it in the future.
How to convert PNG files to JPG for free?
First, you’ll need to upload a JPG file into our tool above. Hit the “UPLOAD FILES” button and find your JPG file(s) to get started. You can also drag and drop your files into the box that says “Drop Your Files Here”. Keep in mind, however, that you can only upload up to 20 files at one time.
Once uploaded, you’ll see our tool convert the files in real time. When finished, you can download each of them one-by-one by clicking the “DOWNLOAD” button under each image. If you have a lot of them, you can save time by downloading them all at once in ZIP format. Just hit the “DOWNLOAD ALL” button to do so.
If after uploading your files you still want to do more conversions, that’s OK! You can repeat this process as many times as you need. Just keep in mind you can only convert in batches of 20 at the most.
Once you’ve converted your files, you have one hour to download them. Be sure to download your files before this time limit is over, as you will need to do your conversion again if you wait too long.
Is it safe to convert JPGs to PNGs?
It is totally safe to use our tool to convert your files. Your original file remains untouched on your phone, tablet, or computer, so you can always go back to the original if the converted file doesn’t work for you.
Also, our server deletes all uploads and conversions after one hour. This ensures your sensitive information stays safe. You never need to worry about your files staying on our server for more than one hour!