Convert JPG to PNG — free, in your browser
Drop your file below. The conversion runs entirely inside your browser — the file never leaves your device, there is no account, no watermark and no size-signup trap.
Supports image/*,.webp,.gif,.bmp,.avif,.svg,.tif,.tiff
PNG is lossless — the quality slider does not apply.
This page converts JPEG files to PNG right in your browser — the file is never uploaded. JPEG is lossy (no transparency); PNG is lossless (transparency support). Everything below runs on the same encoder your browser ships with, so the result you download is exactly what this page measured.
Converting never adds quality: if the source is a lossy format, that loss is already baked into the pixels and no converter can recover it. What a conversion can do is stop further loss (choosing a lossless target) or shrink the file further (choosing a more efficient codec). The measured table below shows real sizes and timings for a representative sample so you can decide before spending time.
Measured on this page
| Sample | JPG | PNG | Median time | Size change |
|---|---|---|---|---|
| 800×600 mixed content (gradient, shapes, text) | 31 KB | 262 KB | 7 ms | +745% |
Encoded by this page's own browser engine, median of 5 runs at quality 80. Your files will vary — treat it as a representative data point, not a promise.
When JPG → PNG is the right call
- •The image will be edited, re-saved or annotated repeatedly — a lossless master stops generational loss from here on.
- •You need transparency later (logo cut-outs, overlays): PNG is the format that can hold an alpha channel.
FAQ
Will converting JPG to PNG improve quality?
No converter can undo JPEG compression that already happened. What PNG gives you is a guarantee that future edits and re-saves lose nothing further.
Why did the file get bigger?
PNG stores every pixel losslessly with no JPEG-style discarding, so the file grows. That is the price of lossless storage, not a red flag.
Does the PNG now have a transparency channel?
The container supports it, but your source JPG had no alpha, so the output is fully opaque. Add transparency in an editor when needed.