JPG to PNG Converter
Move a JPG to PNG before editing, so repeated saves stop degrading it.
Up to 50 MB per file. Sign up free to convert files up to 100 MB.
| File name | Size | Convert to |
|---|
Checking files and selected output formats.
What to expect when converting JPG to PNG
A 1 MB JPG typically becomes 2 – 5 MB as PNG.
Quality: Lossless, the conversion does not improve quality (any JPG compression artifacts in the original are preserved exactly).
Best for: adding transparent backgrounds, layering in design software, archival.
Avoid when: you only need the photo as-is and want a smaller file.
Tip: PNG can't undo JPG artifacts. If the source has visible compression noise, it will be preserved at higher fidelity in PNG, bigger file, same flaws.
JPG to PNG - The lossy-to-lossless conversion - mostly for editing
Of all the image conversions this one is searched for most, and the honest reason to run it is that you are about to edit the file. Logo work, product-photo cleanup and screenshot annotation all involve repeated saves, and every re-save of a JPG throws away a little more information. PNG stops that. What it cannot do is undo the compression already baked in, you are preventing further loss, not recovering what has gone. Expect the file to grow 2-4× for photographic content.
Converting JPG to PNG: what you gain and what you don't
JPG-to-PNG conversion decodes the lossy JPG data and re-wraps it in a lossless PNG container. The resulting PNG preserves every pixel of the decoded JPG exactly, but it cannot recover detail that the original JPG encoding discarded. The file will be 3-8× larger with zero visual improvement. What you do gain: a format that won't degrade further on re-save, the ability to add transparency in an editor, and compatibility with workflows that require lossless input.
Convert JPG to PNG when you need to edit the image in software that re-saves on every operation (preventing accumulating JPG artifacts), when you need to add a transparent background, or when a system specifically requires PNG input. Don't convert if your goal is to "improve quality", the quality ceiling is set by the original JPG, and no format change can raise it.
JPG vs PNG: Side-by-side
Technical comparison of the two formats, useful for deciding which to use, or for confirming what changes during conversion.
| Property | JPG | PNG |
|---|---|---|
| Full name | JPEG (Joint Photographic Experts Group) | Portable Network Graphics |
| Year introduced | 1992 | 1996 |
| Developer / standard body | JPEG Committee | PNG Development Group / W3C |
| MIME type | image/jpeg | image/png |
| File extension | .jpg / .jpeg | .png |
| Compression | Lossy (DCT-based) | Lossless (DEFLATE) |
| Color / data depth | 24-bit truecolor | 24-bit truecolor + 8-bit alpha |
| Max dimensions / size | 65,535 × 65,535 px | 2,147,483,647 × 2,147,483,647 px |
| Transparency | No | Yes |
| Animation | No | APNG extension only |
| Standard / specification | ISO/IEC 10918 | W3C / ISO/IEC 15948 |
| Best for | Photos, web images, email attachments | Logos, screenshots, graphics with transparency or sharp edges |
Use JPG when
- The image is a photograph and file size matters (web, email, upload forms)
- Nobody needs to edit it further, final delivery, not source
- Transparency is not required
- You need the smallest possible file that still looks good
Use PNG when
- The image contains text, sharp edges, or flat colour areas
- You need transparency, logos, UI elements, product mockups
- The image will be edited or resaved multiple times
- Quality matters more than file size (design tools, archival)
Use JPG for photographs shipped to the internet. Use PNG for everything else, screenshots, logos, illustrations, anything with edges. The one trap people hit: converting a low-quality JPG to PNG doesn't rescue the quality, it just makes a bigger file with the same JPG artifacts baked in.