JPG is a compressed format that works well for photos, but it loses quality every time it's re-saved and doesn't support transparency. PNG, on the other hand, is lossless and supports a transparent background, which makes it the better choice for logos, graphics, screenshots, and any image you plan to edit further without quality loss.
The problem with most "JPG to PNG converter" websites is that they require you to upload your files to a remote server. That's slow for large batches, risky for private or confidential images, and often limited to a handful of files at a time. Converting offline with a desktop tool solves all three problems at once: your images never leave your computer, there's no file-size cap, and you can process thousands of images in one go.
- Download and install Turbo Batch Image Converter Pro on your Windows PC. The app runs entirely on your own machine — no account, no upload, no internet connection required to convert.
- Open the app and switch to Batch Mode if you have multiple JPG files, or Individual Mode for a single file.
- Drag and drop your JPG file or folder into the app window. If your images are spread across sub-folders, enable recursive folder scanning so nothing gets missed.
- Set the "From" format to JPG and the "To" format to PNG.
- Optionally enable resizing if you also want to scale your images down or up during the same conversion pass.
- Click Convert. Your PNG files are written to your chosen output folder in seconds, 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 JPG files automatically after conversion
- No recurring subscription or hidden upload limits
Does converting JPG to PNG improve image quality?
No conversion can add detail that wasn't there originally, but converting to PNG stops any further compression loss and gives you a format that supports transparency for future edits.
Can I convert thousands of JPG files at once?
Yes. Turbo Batch Image Converter Pro is built for bulk jobs, including entire folder trees with sub-folders, and scales conversion speed using multiple CPU cores.
Is an internet connection required?
No. Once installed, the app converts files completely offline, which also means your images stay private on your own device.
Ready to convert your images offline, in bulk, with full privacy?