toolkit For a DNG you intend to keep working on, PNG avoids JPEG compression altogether: add any number of DNG files above and each is decoded to a lossless PNG inside this browser tab, with the batch handed back as one .zip. Decoding runs entirely on your own device and nothing is uploaded, which matters when the raw file is a client's rather than yours. Apple ProRAW is DNG as well and is handled the same way.
Why DNG to PNG instead of JPG
Decoding a raw file turns sensor data into pixels. Saving those pixels as JPEG then compresses them lossily; saving them as PNG does not. Choose PNG when the image is going into a retouching or compositing tool, or when you want to judge the result without JPEG artifacts in the way. The PNG is an 8-bit image, though, so it does not replace the DNG itself — keep the original for any serious grading.
Batches, and the size they add up to
Any number of files can be added at once, free. Keep an eye on the total, though: a PNG from a raw file is lossless and therefore very large, so a batch of them adds up faster than any other conversion here. Results are held in this browser tab until you save them, and once enough unsaved output has accumulated the queue pauses rather than discarding anything. Saving the collected .zip releases it and the remaining files carry on.
What a DNG file is
DNG, short for Digital Negative, is the raw format Adobe published in 2004 as an open alternative to each camera maker's own. Leica, Pentax and Ricoh cameras can write it directly, and it is also the container behind Apple's ProRAW mode on iPhone.
The PNG is written already rotated
The orientation recorded in the DNG is applied to the pixels themselves before the PNG is written, so the image is upright everywhere and does not depend on a viewer honouring metadata.
How large the PNG will be
A PNG of a photograph is big: commonly several times the size of a JPG of the same frame, and it can exceed the DNG it came from, because a DNG typically holds one compressed value per sensor pixel while the PNG holds three full colour channels. The lossless PNG mode on this page trims that somewhat without touching a pixel. If size matters more than avoiding compression, DNG to JPG is the better fit.
Frequently asked questions
Does my DNG leave my device?
No. Decoding and PNG encoding happen locally in your browser; there is no upload step, for your own files or a client's.
Can I convert several DNGs at once?
Yes, and there is no limit on the count. Because PNG output is so much larger than the DNG it came from, a long batch may pause partway and ask you to save what is finished — nothing is thrown away, and saving the .zip lets the rest continue.
Does this handle Apple ProRAW DNG files too?
Yes — Apple ProRAW files are DNG files, decoded the same way as any other DNG.
Is the PNG 16-bit?
No. The PNG is written at 8 bits per channel, like any image a browser displays. That is enough for viewing and most editing; if you need the full tonal headroom, work from the DNG itself in a raw editor.
Why is the PNG much bigger than the DNG?
A DNG stores compressed raw sensor data, usually one value per pixel; a PNG stores a fully decoded bitmap with three colour channels, compressed losslessly. The size increase is expected.
Can a PNG be converted back to DNG?
No. The raw data is not recoverable from a PNG, and this site has no DNG encoder.