JPG → PNG
Decode JPG to lossless PNG so further editing and re-saving introduces no additional generation loss; file size increases accordingly.
Drag files here or click to upload (multiple files supported)
Ctrl+V to paste from clipboard
How to convert JPG to PNG
- 1Upload your JPG file by dragging, clicking, or pasting.
- 2Adjust quality settings if needed.
- 3Click 'Convert Now' and wait for the conversion to complete.
- 4Download your converted PNG file.
About JPG to PNG conversion
JPG was released by the JPEG organization in 1992, it uses lossy compression based on DCT discrete cosine transform, and does not support alpha channels. PNG was released in 1996, it uses DEFLATE lossless compression and supports 8-bit alpha channels. This conversion is used when users need to preserve transparency effects.
The converted output PNG uses DEFLATE lossless compression, retains all pixel information of the original JPG, has a larger file size than the original JPG, does not add a new alpha channel, retains the input file's EXIF metadata, and keeps the same output color depth as the original JPG.
This conversion is suitable for design workflows that require reserving format space to add an alpha channel to a JPG, or require multiple edits without accumulating compression artifacts. It is compatible with image viewing and editing software on all mainstream operating systems and devices.
JPG vs PNG: technical comparison
| Feature | JPG | PNG |
|---|---|---|
| Compression | Lossy | Lossless |
| Transparency | No | Yes |
| Animation | No | No |
| Released | 1992 | 1996 |
| Developer | Joint Photographic Experts Group | PNG Development Group |
FAQ about JPG → PNG
Will image quality change after conversion
This conversion runs on the Sharp engine, outputs in PNG lossless compression format, adds no extra compression loss, does not generate accumulated compression artifacts, and retains all pixel information from the original JPG.
Does conversion preserve the alpha channel
Original JPG does not natively support alpha channels, this conversion will not create an alpha channel out of thin air. The alpha channel state of the output PNG matches the input JPG.
What is the maximum single file size limit
The maximum upload size for a single file supported by this tool is 50MB, only one file can be converted at a time. The service is free of charge, output files have no watermarks, and no account registration is required.
Will my files be stored
Conversion is completed server-side, files are uploaded via HTTPS. After conversion completes, the server immediately deletes both the source file and output file, no files are stored, and your file privacy is protected.