1. Add JPG files
Drag your JPG images onto the upload area or click to browse. No limit on the number of files.
JPG to PNG converter – switch to lossless quality
Convert JPG photos to lossless PNG format. Add files, convert instantly, and download. Runs entirely in your browser - files never leave your device.
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Why convert JPG to PNG?
JPG (JPEG) is a lossy format optimised for photographs. Every time a JPG file is re-saved, the image loses a small amount of detail due to lossy compression. PNG, on the other hand, uses lossless compression - no data is discarded, so the image remains pixel-perfect.
Converting JPG to PNG is useful when you need to edit an image further without accumulating compression artefacts, when a platform requires PNG uploads, or when you want to add transparency later in a graphics editor.
Keep in mind that converting a JPG to PNG does not restore detail already lost during the original JPG compression. The resulting PNG will be a faithful, lossless copy of the JPG - but at a larger file size.
This tool processes everything locally in your browser. Your images are never uploaded to any server.
How to convert JPG to PNG
Three simple steps:
2. Convert
Press Convert. Each image is re-encoded to lossless PNG in your browser within seconds.3. Download PNG
Download each file individually or grab them all at once. File sizes are displayed for easy comparison.
When should you convert JPG to PNG?
Common use cases for JPG-to-PNG conversion:
Further image editing
If you plan to edit a photo in a graphics tool, converting to PNG first prevents additional quality loss from repeated JPG saves.Platform requirements
Some websites, print services, and submission portals specifically require PNG uploads. A quick conversion ensures compliance.Adding transparency
PNG supports an alpha channel. Convert to PNG, then use a graphics editor to remove the background and save with transparency.Print-quality archiving
Store important images in lossless PNG to prevent further degradation, especially if the original RAW file is unavailable.
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What makes this JPG to PNG converter different?
Complete privacy
Files never leave your computer. Conversion uses the browser Canvas API - nothing is sent to any server.No file limit
Convert as many images as you need. All files are processed in sequence and ready for download.Instant conversion
PNG encoding is handled natively by your browser, so conversions complete in seconds even for large files.One-click download
Download converted files individually or all at once with a single click.
JPG vs PNG – format comparison
| Feature | JPG | PNG |
|---|---|---|
| Lossy compression | ✓ | — |
| Lossless compression | — | ✓ |
| Transparency (alpha channel) | — | ✓ |
| Animation support | — | — |
| Web browser support | All browsers | All browsers |
| Color depth | 8-bit (16.7M) | 8/16-bit |
| Compact file size | ✓ | — |
| Metadata (EXIF) | ✓ | — |
How image conversion impacts page speed and SEO
Core Web Vitals is a set of performance metrics Google uses when evaluating websites. One of them - LCP (Largest Contentful Paint) - measures the time it takes for the largest visible element to appear on screen. On many pages, that element is an image.
Converting JPG images to PNG reduces graphic file sizes, which directly shortens resource download time and improves the LCP score. Smaller files mean faster page loading - especially important on mobile devices with slower connections. Additional techniques like loading="lazy" and fetchpriority="high" speed up rendering.
Tools like PageSpeed Insights and Lighthouse identify specific files worth optimizing.
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Tips for converting JPG to PNG
A few tips to help you avoid common issues during conversion:
Very large files
Converting images above 4000×4000 pixels may be slower and strain the browser. If processing many large files, consider splitting them into batches of 10–20.Already compressed files
If the original JPG file was already heavily compressed, converting to PNG may not yield significant size savings. Try different quality settings.Transparency
The PNG format supports alpha channel (transparency). If the original JPG file contains transparent areas, they will be preserved.Keep your originals
Lossy conversion is irreversible. Keep copies of original JPG files so you can re-convert with different settings if needed.
How much can you save by converting JPG to PNG?
Savings depend on the source file type and its original compression. Below are example results:
Camera photo
2.4 MB → 890 KB
Product image
500 KB → 185 KB
Screenshot / banner
350 KB → 230 KB
Actual savings may vary depending on image content and quality settings. The converter shows the exact size before and after conversion for each file.
Convert other files to PNG
Convert JPG to other formats
Frequently asked questions about JPG to PNG conversion
Does converting JPG to PNG improve image quality?
No. PNG is lossless, but it cannot restore detail already discarded by JPG compression. The resulting PNG is a pixel-perfect copy of the JPG - just stored in a lossless container.
Why is the PNG file larger than the original JPG?
PNG uses lossless compression, which preserves every pixel. JPG achieves smaller sizes by discarding data. So the same image in PNG will almost always be larger.
Can I convert multiple files at once?
Yes. There is no file limit. Add as many JPGs as you like and convert them all in a single batch.
Are my files uploaded to a server?
No. Everything runs locally in your browser. Files never leave your device.
Will the converted PNG have transparency?
No. JPG does not contain transparency data, so the PNG will have a solid (white) background. You can add transparency later using a graphics editor.
Does this tool work on mobile?
Yes, but we recommend a laptop or desktop for the best experience. The converter uses the HTML5 Canvas API supported by all modern browsers.
What is the maximum file size?
Individual files up to 100 MB are supported. There is no cap on the total number of files per session.
Can I convert PNG back to JPG?
Absolutely. Use our <a href="/en/tools/png-to-jpg-converter">PNG to JPG converter</a> to switch back at any time.
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