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Supports: DNG
ORIGINAL for full 24-bit RGB, or switch to Color Reduction + Dither to drop to an 8/16/32/64/128/256-color palette for icons and pixel art.DNG (Digital Negative) is Adobe's open RAW container, released September 27, 2004 as an extension of TIFF 6.0 and TIFF/EP (ISO 12234-2). It carries the unprocessed sensor data that lets you push exposure, white balance, and shadows in Lightroom or Camera Raw without quality loss. The catch: browsers can't render DNG, and most macOS/Windows preview tools only show the embedded JPEG thumbnail. Converting to PNG bakes your edited interpretation into a viewable, lossless raster that anyone can open.
.dng. PNG is in the always-accepted list alongside JPG and WebP.Need a smaller file? Convert to JPG instead — PNG output is typically 3–5× larger than equivalent JPEG. Need a print-ready format with layers and CMYK? Convert to TIFF.
| Property | DNG | PNG |
|---|---|---|
| Released | 2004 (Adobe; spec 1.7.1, Sept 2023) | 1996 (W3C/ISO 15948) |
| Type | RAW container (TIFF/EP based) | Processed raster |
| Bit depth | 12–16 bit per channel typical | 8 or 16 bit per channel |
| Compression | Lossless (or uncompressed) | Lossless (deflate) |
| Transparency | No alpha — sensor data only | Alpha channel (RGBA) |
| Typical size (12–48 MP) | 20–60 MB (Pixel/Leica), 25–40 MB (ProRAW) | 3–25 MB depending on content |
| Browser support | None natively | Universal (Chrome, Firefox, Safari, Edge) |
| Editor flexibility | Maximum — exposure/WB still editable | Pixels are baked in |
| Best for | Capture, archival, post-processing | Web, sharing, lossless previews |
| Setting | What it controls | Use when |
|---|---|---|
| Quality preset — Very High | Maximum deflate effort, full 24-bit RGB | Default; archival or print previews |
| Quality preset — High / Medium | Faster encode, slightly larger files | Quick batch exports |
| Quality preset — Low / Lowest | Resamples to lower internal precision | Thumbnails, contact sheets |
| Compression level 1–3 | Fast encode, larger PNG | Large batches where speed matters |
| Compression level 7–9 | Slow encode, smallest PNG | Single hero images for web |
| Colors — ORIGINAL | Keeps 24-bit truecolor | Photos, gradients, skin tones |
| Colors — Reduction + Dither (2–256) | Indexed palette with Floyd–Steinberg-style dither | Icons, pixel art, retro stylisation |
| Resolution — 50% scale | Halves pixel dimensions, ~1/4 file size | Web previews from 48 MP DNGs |
The PNG reflects the DNG's embedded preview and current XMP-side-car settings if present. If you've made adjustments in Lightroom but haven't written settings back to the DNG (File → Save Metadata to File), the converter sees the original capture, not your edits. Save metadata first, then convert.
PNG is uncompressed-pixel territory while DNG often stores RAW data with lossless prediction-based compression that's denser than deflate on smooth sensor data. A 30 MB ProRAW can produce a 40–60 MB PNG at full resolution. Either drop to 50% resolution, switch to JPG (5–10× smaller), or use WebP for ~30% smaller files at the same visual quality.
PNG supports 16-bit-per-channel RGB and the converter outputs at the bit depth that fits your source. Most ProRAW and Pixel DNGs are 12-bit linear and convert to 16-bit PNG cleanly. If you set the Colors option to "Color Reduction + Dither" the output drops to 8-bit indexed regardless of source depth.
Yes. Drop the entire folder of DNGs onto the upload area and they all queue with the same settings. ProRAW files at 25–40 MB each process in your browser session — there's no per-file count limit imposed by the page itself, though browser memory becomes the practical ceiling around a few hundred files.
Pick PNG when you need lossless quality, transparency, or sharp edges (text overlays, product cutouts, screenshots). Pick JPG for photographs you'll share on social media or email where file size matters more than pixel-perfect retention. PNG is typically 3–5× larger than JPG at visually equivalent quality.
Yes. Apple ProRAW (introduced in iOS 14.3 for iPhone 12 Pro and Pro Max, now on every Pro model since) saves as a Linear DNG. The converter accepts these directly — no need to first run them through Lightroom or Photos. You get a PNG that includes Apple's computational stack (Smart HDR, Deep Fusion, Night mode) baked into the embedded preview.
Pixel phones save RAW as standard DNG under a Raw/ folder when RAW+JPEG is toggled on in the Google Camera app. These convert identically to any other DNG — the converter reads the TIFF/EP-based structure regardless of source camera.
The PNG output includes a basic tEXt chunk for software identification but does not carry forward the EXIF metadata block (ISO, shutter, lens, GPS) that lived in the DNG. If you need EXIF preserved for portfolio or archival use, convert to TIFF instead — TIFF retains the full metadata header.
This page handles format conversion, resolution, and compression. For cropping or rotation, run the DNG through a dedicated tool first or convert to PNG and then use a PNG editor for crop, rotate-png for rotation, or merge multiple DNGs into a PDF for contact sheets.