JPG to PNG
Convert JPEG images to lossless PNG format right in your browser — no upload needed.
JPG to PNG Converter is a browser-based tool that converts JPEG images to PNG format without uploading them to a server. PNG is a lossless format, so the output retains every detail from the original image with no compression artifacts. This makes the conversion useful when you need an editable, high-quality version of a photo or graphic, or when a platform requires PNG specifically.
Tool interface
The interface is minimal:
- A drag-and-drop upload area for one or multiple JPEG files
- A file list showing each filename and size, with individual remove buttons
- A
Convert & Downloadbutton that processes all files
Single files download directly as .png. Multiple files are packaged into a ZIP archive named converted-images.zip.
Tool description
JPG to PNG Converter uses the browser's Canvas API to decode each JPEG and re-encode it as a PNG. PNG uses lossless compression, meaning pixel data is preserved exactly — there is no quality setting to adjust because nothing is discarded in the process.
The output PNG files are typically larger than their JPEG sources. This is expected behaviour: JPEG achieves smaller sizes through lossy compression, while PNG stores complete pixel information. If smaller file size matters more than losslessness, the PNG to JPG tool works in the opposite direction.
Some practical use cases:
- Converting product photos to PNG for use in design tools that require it
- Preparing images for further editing in tools that work better with lossless formats
- Creating screenshots or graphics in PNG for use in documentation or presentations
- Extracting lossless copies of JPEG images before editing to prevent generation loss
- Converting JPEG assets to PNG for use in projects where transparency may be added later
How to use
- Drop JPEG files onto the upload area or click
Browseto select them. - Review the file list and remove any files you do not want to convert.
- Click
Convert & Download. - Single files download directly as
.png. Multiple files are saved as a ZIP archive.
Tip: PNG files are lossless and larger than JPEG. If you are converting for web use and transparency is not needed, consider whether JPEG remains a better fit for the final output.
FAQ
Which formats are accepted as input?
JPEG (.jpg / .jpeg) files are accepted.
Why are the output files larger than the originals?
PNG is a lossless format. It stores every pixel without discarding information, while JPEG uses lossy compression to achieve smaller sizes. A larger file is the expected trade-off for losslessness.
Is there a quality setting for the PNG output?
No. PNG is lossless, so there is no quality slider — the output always represents the image at full fidelity.
Can I convert multiple files at once?
Yes. Select or drop multiple files, then click Convert & Download. All converted images are packaged into a ZIP archive.
Are my files uploaded to a server?
No. All conversion happens locally in your browser using the Canvas API. Your images are never sent anywhere.