CONVERT
PNG → DPX
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Fast, secure PNG to DPX conversion. No registration required.
Here is the short version — PNG is the lossless image standard with alpha-channel transparency and deflate compression. Hence the need for DPX. Turn a PNG image into a DPX in seconds. The two formats share the same raster DNA so the visible quality is very close; what changes is how the file is packaged, which matters for browsers, editors and CMS uploaders. KaijuConverter runs the conversion server-side and deletes both files within two hours. Technical note: PNG is the lossless image standard with alpha-channel transparency and deflate compression. Compare that with DPX is a raster image format with its own balance of compression, colour depth, and software support.
PNG Image
Source formatPNG is a lossless image format that supports transparency. It is ideal for graphics, logos, screenshots, and any image where preserving exact pixel data is important.
Digital Moving-Picture
Target formatDPX (Digital Picture Exchange) is a SMPTE standard file format for digital intermediate and visual effects work. It stores per-frame image data with rich metadata for color management and is widely used in film post-production pipelines.
Why convert PNG to DPX
The real reason to move from PNG to DPX is almost never picture quality — both raster formats store essentially the same pixels. It is about the tools downstream: which editors open the file natively, which CMSes upload it without transcoding, which social platforms accept it. Picking DPX solves those edge cases at the cost of a short conversion step.
HOW TO CONVERT
PNG → DPX
Provide the PNG
Click or drag to upload. We accept a single PNG file per job, with an optional queue of additional images for batch mode.
Encode to DPX
The conversion decodes the PNG, resolves the colour space to sRGB and writes the DPX container around the pixel data.
Save the DPX
The download is streamed back over HTTPS. If you uploaded multiple files, a ZIP with all DPX outputs is produced instead.
Common Use Cases
Share across platforms
Send DPX files to anyone without worrying about whether they have the right software for PNG.
Embed in documents
Drop DPX output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
DPX often produces smaller files than PNG for web, email and storage.
Archive & future-proof
Store in a widely-supported format that will still open on future operating systems without legacy plugins.
PNG vs DPX — Strengths and limitations
What each format does best, and where it falls short.
PNG Strengths
- Lossless compression — every save preserves the original pixels perfectly.
- Full 8-bit alpha channel for smooth transparency.
- Excellent for text, UI screenshots, logos, and line art.
- Royalty-free and an ISO standard (ISO/IEC 15948).
- Supports 16-bit color depth for high-fidelity work.
Limitations
- Much larger than JPEG for photographs (no perceptual compression).
- No native animation in most software (APNG support is inconsistent).
- No CMYK support — web and screen only, not print.
DPX Strengths
- Industry-standard archival format for film.
- Logarithmic color encoding preserves film look.
- Lossless — no generation degradation.
- SMPTE standardized (SMPTE 268M).
- Every VFX and color-grading app reads and writes DPX.
Limitations
- No compression — file sizes are enormous.
- Not a display format — requires color-managed pipelines.
- Gradually superseded by OpenEXR in modern VFX.
PNG vs DPX — Technical specifications
Side-by-side comparison of the technical details.
PNG
- MIME type
- image/png
- Compression
- Lossless — DEFLATE (zlib)
- Color depth
- 1, 2, 4, 8 or 16 bits per channel
- Max dimensions
- 2^31 − 1 pixels per side (2.1 billion)
- Transparency
- Full 8-bit alpha channel
- Standard
- ISO/IEC 15948:2004
DPX
- MIME type
- image/x-dpx
- Standard
- SMPTE 268M
- Extension
- .dpx
- Bit depths
- 8, 10, 12, 16 bits per channel
- Color encoding
- Logarithmic (Cineon-style) by convention
| Specification | PNG | DPX |
|---|---|---|
| MIME type | image/png | image/x-dpx |
| Compression | Lossless — DEFLATE (zlib) | — |
| Color depth | 1, 2, 4, 8 or 16 bits per channel | — |
| Max dimensions | 2^31 − 1 pixels per side (2.1 billion) | — |
| Transparency | Full 8-bit alpha channel | — |
| Standard | ISO/IEC 15948:2004 | SMPTE 268M |
| Extension | — | .dpx |
| Bit depths | — | 8, 10, 12, 16 bits per channel |
| Color encoding | — | Logarithmic (Cineon-style) by convention |
PNG vs DPX — Typical file sizes
Approximate file sizes for common scenarios.
PNG
- Icon or small logo 2–20 KB
- UI screenshot (1920×1080) 200–800 KB
- High-res photo (12 MP) 10–30 MB
- Print-ready illustration 5–50 MB
DPX
- 2K DPX frame (2048×1556, 10-bit) ~12 MB
- 4K DPX frame (4096×3112, 10-bit) ~50 MB
- 90-min feature at 4K DPX sequence ~6 TB
Quality & Compatibility
PNG-to-DPX conversion does not change the visible content. Quality is capped by the PNG decode; re-encoding a lossy source at high quality cannot recover detail that was already discarded. For archival masters, keep the original PNG alongside the DPX copy.
Tips for Best Results
- Large PNG files may look identical to small DPX files for photographic content; pick quality based on end use, not headline megapixels.
- For print, export DPX at 300 DPI minimum and check that the colour profile embedded matches the print shop specification.
- Batch-convert related PNG images in one pass so they share identical encoder settings and look consistent side-by-side.
Frequently Asked Questions
It depends on the codecs involved. If both PNG and DPX are lossy, the pixels are re-encoded and a small amount of detail is discarded — invisible at default quality settings on photographs. If DPX is lossless (PNG, TIFF, BMP) the output keeps every pixel of the decoded PNG exactly, but cannot recover detail that PNG had already compressed away.
Often yes, especially when DPX is lossless. PNG tuned for efficient web delivery will usually produce smaller files than DPX's default settings. If file size matters, drop the quality in Advanced or pick a more compressed target format instead.
KaijuConverter uploads over HTTPS, processes the image in an isolated container and deletes both the source and the output within two hours. No account is required, file contents are never logged, and we do not use uploads to train any model. For confidential material, the paid plan includes a data-processing agreement.
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Read guideSecure & Private Conversion
Your files are encrypted during transfer, processed in isolated containers, and automatically deleted within 60 minutes. We never read, share, or store your data.