How to Convert JPEG to PNG

JPEG uses lossy compression that discards some image data permanently on every save, and it has no alpha channel, so it can never have a transparent background. PNG works the opposite way: it's lossless, meaning the pixel data is preserved exactly, and it supports a full alpha channel for transparency. That makes PNG the right target whenever you need a logo, icon, screenshot, or graphic with a transparent or semi-transparent background, or when you're about to re-edit an image multiple times and don't want compression artifacts to compound with each save.

The tradeoff is file size — PNG files are typically larger than JPEGs of the same image, especially for photographic content with lots of color gradients, since lossless compression can't shrink that kind of data as aggressively as JPEG's lossy algorithm.

1. Install Turbo Batch Image Converter Pro on your Windows PC.
2. Open the app and select Batch Mode for multiple files, or Individual Mode for a single JPEG.
3. Drag your JPEG file or folder into the app window, enabling recursive folder scanning if your images span sub-folders.
4. Set the "From" format to JPEG and the "To" format to PNG.
5. Optionally enable resizing if you also want to scale the images during the same pass.
6. Click Convert. PNG files are written to your output folder, fully offline.

• 100% offline — your photos are never sent to any server
• Bulk conversion of entire folders, including sub-folders, in a single click
• Multi-core processing scales up to 32 concurrent workers for fast batch jobs
• Optional batch resizing while converting, with fit, fill, or stretch modes
• Option to delete the original JPEG files automatically after conversion
• No recurring subscription or hidden upload limits

If you only need straightforward format conversion without RAW or HEIC support, Turbo Batch Image Converter Lite covers this exact JPEG-to-PNG conversion in a lighter, more focused app.