Convert JPG to PNG — Free, Private, No Upload
Convert JPG images to high-quality PNG format instantly. No upload, batch processing, free.
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How to Convert JPG to PNG
Select your JPG files
Choose files or drag and drop them into the converter. Any image format is accepted.
Convert to PNG
Conversion starts automatically with optimized defaults. Adjust quality in advanced settings.
Download
Download converted files individually or as a ZIP archive.
Why Convert JPG to PNG?
Need to add transparency to a photo or preserve every pixel for editing? Converting JPG to PNG gives you a lossless format that supports alpha transparency. This is essential when you need to layer images in a design tool, remove backgrounds, or create graphics where sharp edges matter.
PNG stores every pixel without further compression loss. Once you convert a JPG to PNG, subsequent edits and saves will not degrade quality any further. This makes PNG the preferred format for design workflows, screenshots, and any image that will be edited multiple times.
LeanImg converts your JPG to PNG entirely in your browser — images never leave your device. No upload, no server processing, no privacy concerns. Just drop your files and download the results.
Note that converting JPG to PNG will not recover quality already lost during JPG compression. The resulting PNG will be a perfect copy of the JPG pixels, just stored losslessly. Want smaller files instead? Try JPG to WebP for modern web use.
JPG vs PNG
| Feature | JPG | PNG |
|---|---|---|
| File Size | Small (lossy) | Large (lossless) |
| Transparency | No | Yes (alpha channel) |
| Compression | Lossy | Lossless |
| Browser Support | Universal | Universal |
| Best For | Photos, web images | Graphics, editing |
| Quality Loss on Save | Yes (each save) | None |
Frequently Asked Questions
How to convert JPG to PNG?
Visit LeanImg in any browser and drop your JPG files into the converter. PNG versions are created instantly, right in your browser. It is completely free, needs no sign-up, and your images are never uploaded to a server. Batch conversion is supported for multiple files.
Is it safe to convert JPG to PNG online?
Absolutely. LeanImg runs entirely in your browser. Your images are never uploaded, never stored on any server, and never leave your device. The conversion uses WebAssembly codecs that process files locally. It is as safe as renaming a file on your desktop.
How to convert JPG to PNG on iPhone?
Open Safari on your iPhone and navigate to LeanImg. Tap the upload area to select your JPG photo from your camera roll. The PNG file will be created in seconds. No app to install — it works directly in your phone's browser.
Does converting JPG to PNG improve quality?
No. Converting JPG to PNG preserves the current quality but cannot recover detail lost during JPG compression. The benefit is that the PNG will not lose any more quality on subsequent saves, unlike JPG which degrades each time it is re-saved.