CONVERT
PSD → MIFF
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Fast, secure PSD to MIFF conversion. No registration required.
Here is the short version — PSD is Adobe Photoshop's native editing file with full layer, mask and channel support. Hence the need for MIFF. Turn a PSD image into a MIFF 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. Worth knowing: PSD is Adobe Photoshop's native editing file with full layer, mask and channel support. Meanwhile MIFF is a raster image format with its own balance of compression, colour depth, and software support.
Adobe Photoshop Document
Source formatPSD is the native file format for Adobe Photoshop, storing layered image data, masks, color spaces, and editing metadata. Converting PSD flattens layers into a single composite image.
ImageMagick MIFF
Target formatMIFF (Magick Image File Format) is the native format of ImageMagick, supporting all of its internal features including multiple image layers, color profiles, and arbitrary metadata. It serves as a lossless interchange format within ImageMagick processing chains.
Why convert PSD to MIFF
The real reason to move from PSD to MIFF 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 MIFF solves those edge cases at the cost of a short conversion step.
HOW TO CONVERT
PSD → MIFF
Provide the PSD
Click or drag to upload. We accept a single PSD file per job, with an optional queue of additional images for batch mode.
Encode to MIFF
The conversion decodes the PSD, resolves the colour space to sRGB and writes the MIFF container around the pixel data.
Save the MIFF
The download is streamed back over HTTPS. If you uploaded multiple files, a ZIP with all MIFF outputs is produced instead.
Common Use Cases
Document embeds
Word, Google Docs and Pages embed MIFF with correct aspect ratio; PSD may appear as a broken image icon.
Printer-friendly export
Consumer and office printers drive MIFF through their print spoolers with no additional drivers.
Presentation slides
PowerPoint and Keynote treat MIFF as a first-class citizen; PSD may need manual re-insertion per slide.
Online form uploads
Identity verification, job applications and legal forms often list MIFF as the only accepted image format.
PSD vs MIFF — Strengths and limitations
What each format does best, and where it falls short.
PSD Strengths
- Preserves every Photoshop feature: layers, masks, adjustments, smart objects, text, effects, styles.
- Backward-compatible — files from 1990 still open in modern Photoshop.
- Industry-standard handoff format between designers, agencies, and prepress.
- Supports 32-bit HDR, CMYK, Lab, Duotone, and spot colors for professional print work.
- Rich metadata, color profiles, and printing instructions survive round-trips.
Limitations
- Proprietary — full fidelity only in Adobe tools; other apps approximate.
- File sizes are enormous (hundreds of MB is common for complex documents).
- Not a web format — browsers cannot display PSD natively.
MIFF Strengths
- Preserves ImageMagick's full fidelity.
- Arbitrary bit depth + color profile.
- Streaming pipeline intermediate.
Limitations
- ImageMagick-only.
- Not a delivery format.
- Large files.
PSD vs MIFF — Technical specifications
Side-by-side comparison of the technical details.
PSD
- MIME type
- image/vnd.adobe.photoshop
- Max dimensions
- 30 000 × 30 000 px (PSD); 300 000 × 300 000 (PSB)
- Max file size
- 2 GB (PSD); 4 EB (PSB)
- Color modes
- Bitmap, Grayscale, Duotone, Indexed, RGB, CMYK, Lab, Multichannel
- Bit depths
- 1, 8, 16, 32 bits per channel
MIFF
- MIME type
- image/x-miff
- Bit depths
- Any (ImageMagick-supported)
- Extension
- .miff
- Native tool
- ImageMagick
| Specification | PSD | MIFF |
|---|---|---|
| MIME type | image/vnd.adobe.photoshop | image/x-miff |
| Max dimensions | 30 000 × 30 000 px (PSD); 300 000 × 300 000 (PSB) | — |
| Max file size | 2 GB (PSD); 4 EB (PSB) | — |
| Color modes | Bitmap, Grayscale, Duotone, Indexed, RGB, CMYK, Lab, Multichannel | — |
| Bit depths | 1, 8, 16, 32 bits per channel | Any (ImageMagick-supported) |
| Extension | — | .miff |
| Native tool | — | ImageMagick |
PSD vs MIFF — Typical file sizes
Approximate file sizes for common scenarios.
PSD
- Simple 2-layer logo 500 KB - 3 MB
- Website mockup with 20 layers 20-80 MB
- Magazine spread with hi-res photos 150-500 MB
- Matte painting / CGI composite 1-4 GB
MIFF
- 1920×1080 8-bit MIFF ~6 MB
- 1920×1080 32-bit float ~25 MB
Quality & Compatibility
PSD-to-MIFF conversion does not change the visible content. Quality is capped by the PSD decode; re-encoding a lossy source at high quality cannot recover detail that was already discarded. For archival masters, keep the original PSD alongside the MIFF copy.
Tips for Best Results
- Large PSD files may look identical to small MIFF files for photographic content; pick quality based on end use, not headline megapixels.
- For print, export MIFF at 300 DPI minimum and check that the colour profile embedded matches the print shop specification.
- Batch-convert related PSD 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 PSD and MIFF are lossy, the pixels are re-encoded and a small amount of detail is discarded — invisible at default quality settings on photographs. If MIFF is lossless (PNG, TIFF, BMP) the output keeps every pixel of the decoded PSD exactly, but cannot recover detail that PSD had already compressed away.
Often yes, especially when MIFF is lossless. PSD tuned for efficient web delivery will usually produce smaller files than MIFF'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.
Related comparisons
See these formats side by side to understand which fits your use case best.
Related Guides
PSD Adobe Photoshop Format: Understanding the Industry Standard
Complete guide to PSD Photoshop format: 5-section file structure, layer types (pixel/adjustment/text/smart object), blend modes, masks, PSB large documents, and export commands.
Read guidePSD Format: The Complete Guide to Adobe Photoshop Documents
Everything about PSD: layer structure, blend modes, adjustment layers, smart objects, PSD vs PSB vs TIFF vs PNG, compatibility with other applications, and how to convert PSD files.
Read guidePSD: Adobe Photoshop Native Format & Layer Architecture
Complete guide to PSD (Adobe Photoshop Document) format: layer structure, blending modes, adjustment layers, layer masks, smart objects, text layers, channels, guides, vector shapes, and file size optimization.
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.