Convert JPG to PNG
Output is typically roughly 4.4× larger.
- Files stay on your device
- Free, no sign-up
Related tools
All image toolsQuestions
Will converting to PNG improve my image quality?
No. Nothing recovers detail that JPEG discarded when the file was first saved — those artefacts are baked into the pixels, and PNG stores the pixels faithfully, artefacts included. What PNG does give you is that no further quality is lost on subsequent saves, which matters if you are about to start editing.
Will converting JPG to PNG make the file smaller?
Usually, yes. A 12-megapixel photo is around 3.2 MB as JPG and around 14 MB as PNG — roughly 4.4× larger. Because PNG is lossless the result depends entirely on the image content — flat colour and text compress far better than photographic detail.
Does converting JPG to PNG lose quality?
No. PNG is lossless, so every pixel decoded from your JPG file is stored exactly. Note that any compression artefacts already baked into the JPG original are preserved too — converting to a lossless format cannot recover detail that was thrown away earlier.
When should I use PNG instead of a smaller format?
Use PNG when exactness matters more than size: screenshots, logos, diagrams, UI assets, anything with sharp text, and any image you will re-edit repeatedly. Lossless means no artefacts and no cumulative degradation. For photographs on the web, WebP or AVIF will be several times smaller at quality nobody can distinguish.
How it works, and more about jpg to png
How it works
- Add your JPG file. Drag a JPG file onto the drop zone, or click to browse. You can select several at once.
- Choose your settings. PNG is lossless, so there is nothing to configure — the output matches the input pixel for pixel.
- Download the PNG. Conversion runs on your device as soon as each file is added — no upload, no queue. Download each result when it is ready.
Why people convert JPG to PNG
There are two reasons people do this and only one of them works. The good reason is that something downstream requires PNG — an editor, a print template, a platform that rejects JPEG, or an image you are about to cut a transparent background into. The other reason is a belief that PNG will improve a photo.
If a tool is demanding PNG, convert away. If you are hoping to repair a blocky or blurry JPEG, this will not do it. PNG is lossless, which means it preserves the JPEG's existing compression artefacts perfectly and exactly. Quality lost at the original save is gone, and changing format does not bring it back.
Worth knowing: Expect the file to get several times larger. That is PNG working correctly — lossless compression cannot do much with photographic detail.
JPG and PNG side by side
| JPG | PNG | |
|---|---|---|
| Full name | JPEG | Portable Network Graphics |
| Compression | Lossy | Lossless |
| Transparency | No | Yes — alpha channel |
| Animation | No | No |
| Browser support | Universal — every browser, every device | Universal — every browser since 1996 |
| Typical 12 MP photo | ~3.2 MB | ~14 MB |
| Usually used for | Photographs, email attachments and anything needing maximum compatibility | Screenshots, logos, icons, diagrams and anything needing transparency |
On a typical 12-megapixel phone photo, the PNG output comes out roughly 4.4× larger than the JPG original. These are order-of-magnitude figures for one kind of image — your own results will vary a great deal, because flat colour, text and line art behave nothing like photographic detail.
What this tool actually produces
Not estimates. Each row below was produced by running the file through this page in a real browser and measuring the result, at the default quality of 82.
| Test image | JPG in | PNG out | Change |
|---|---|---|---|
| Smooth gradient 1600 × 1200, broad tonal transitions — where banding and blocking show | 236 KB | 2.2 MB | +867% |
| UI screenshot 1440 × 900, dense text on flat panels — the hardest case for JPEG | 159 KB | 362 KB | +127% |
| Line-art diagram 1200 × 800, hard edges and large flat areas | 83 KB | 63 KB | -24% |
Note that the direction is not the same for every image. Converting JPG to PNGmakes some of these files smaller and others larger, which is why a single “PNGis smaller” rule of thumb is worth distrusting — what matters is what is in the picture. Measured in Chrome 150.0.7871.46; other browsers encode slightly differently.
What to watch out for
- Very large files for photographic content
- No animation (APNG is a separate, less-supported extension)
- Slower to decode than JPEG at the same pixel count
About the two formats
JPEG has been the default photo format for three decades, and its compatibility is unmatched — if a device can display an image at all, it can display a JPEG. The trade-offs are that it discards detail permanently on every save, and it has no transparency channel at all, so anything transparent becomes a solid background.
PNG stores every pixel exactly as it was, with no generation loss no matter how many times you re-save it. That fidelity is why it dominates screenshots, logos and UI assets, and also why it is the wrong choice for photographs — lossless compression simply cannot get a 12-megapixel photo down to a reasonable size.
Other conversions
Everything runs on your device — nothing is uploaded, so there is no size limit, no queue and no copy left on a server afterwards. There is more on how browser-based conversion works if you want the detail. Otherwise, browse every image tool, or convert PNG back to JPG.