WMZ to PFM Converter

WMZ to PFM conversion — online, no install needed

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Fully Browser-Based

Everything happens in your browser tab. No downloads, no extensions — just a clean WMZ to PFM conversion workflow.

Format Flexibility

WMZ converts to over a hundred output formats on Convertio — PFM is just one of many available options.

Works on Any Device

No platform restrictions. Desktop, laptop, tablet, or phone — Convertio handles WMZ to PFM conversion everywhere.

How to convert WMZ to PFM

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose pfm or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your pfm file right afterwards

About formats

WMZ is a compressed variant of the Windows Metafile (WMF) format, introduced by Microsoft with Office 2000 in 1999. A WMZ file is simply a WMF file compressed using the gzip algorithm (RFC 1952), reducing the file size for more efficient storage and embedding within Office documents, web pages, and other containers. The underlying WMF format stores vector graphics as a sequence of GDI (Graphics Device Interface) function calls — commands that draw lines, curves, polygons, text, and bitmaps — recorded in a device-independent format that can be replayed at any resolution. WMZ preserves this vector nature: when decompressed, the file produces a standard WMF that renders through the Windows GDI subsystem using the same drawing primitives as on-screen display, ensuring visual fidelity across different output devices and resolutions. WMZ files are commonly found embedded in Microsoft Office documents (Word, Excel, PowerPoint), HTML email messages generated by Outlook, and web content produced by Office's Save as Web Page feature. The format is also used for clip art and template graphics distributed with Office installations. One advantage is space efficiency: gzip compression typically reduces WMF file sizes by 60-80%, meaningful when many small graphics are embedded in a single document or web page. The format's deep integration with the Microsoft Office ecosystem is another practical strength — WMZ graphics render natively in all Office applications without additional software, and can be extracted, decompressed, and converted using tools like LibreOffice, ImageMagick, Inkscape, and standard gzip utilities.
Developer: Microsoft
Initial release: 1999
PFM (Portable Float Map) is a floating-point raster image format devised by Paul Debevec around 2001, designed to store high-dynamic-range image data with the simplicity of the Netpbm family of formats. PFM extends the PBM/PGM/PPM philosophy — minimal header, raw data, no compression — to 32-bit IEEE floating-point samples, providing direct access to HDR pixel values without the encoding overhead of formats like OpenEXR or the limited range of Radiance HDR's RGBE encoding. The file structure is deliberately minimal: a two-character magic number ('Pf' for grayscale, 'PF' for color), width and height on the next line, a scale/endianness indicator (negative for little-endian, positive for big-endian, with magnitude indicating scale factor), and then the raw 32-bit float data for each pixel. PFM files store one float per pixel for grayscale or three floats (RGB) per pixel for color, with no compression, alpha channel, or metadata support. The format emerged from the HDR imaging research community where Debevec's work on image-based lighting and light stage capture required a simple, unambiguous way to store linear floating-point radiance values that could be easily exchanged between research tools. One advantage is absolute simplicity for HDR data: PFM can be read and written in a few lines of code in any language that supports IEEE floats, with no library dependencies — ideal for research prototyping and quick data exchange between custom tools. The format's widespread adoption in the computer vision and computational photography research community is another practical strength — optical flow benchmarks (Middlebury), depth estimation datasets, and radiance field captures commonly use PFM. The format is supported by ImageMagick, OpenCV, HDR Shop, and Luminance HDR.
Developer: Paul Debevec
Initial release: 2001

Frequently Asked Questions

Why convert WMZ to PFM?

Converting WMZ to PFM lets you extract vector graphics from Office documents into standard image formats — PFM is widely recognized and easy to share.

How do I open PFM files?

HDR imaging tools, GIMP will handle PFM files without issues. The format is well-supported across platforms.

Do I need to install anything?

Zero installs needed. Open Convertio in any browser, upload WMZ, and download PFM — that simple.

What platforms support this conversion?

The converter runs entirely in the browser, so it works on Windows, macOS, Linux, iOS, and Android without issues.

What quality can I expect from PFM output?

Quality depends on the source data, but PFM format provides floating-point HDR pixel data for excellent results.

Is my WMZ data kept private?

Your files stay private. Source WMZ data is removed post-conversion, and PFM output is cleared within 24 hours.