DBK to PFM Converter

Convert DBK to PFM online — fast, free, and hassle-free

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Privacy First

Your files stay safe — uploads are deleted right after conversion, and PFM results are wiped within 24 hours.

Cloud-Powered

Conversion runs on remote servers — your computer stays fast while DBK files are transformed into PFM in the cloud.

Works Everywhere

Convert DBK to PFM from any device — desktop, laptop, tablet, or phone. All you need is a web browser.

How to convert DBK 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

DBK is a file extension associated with DocBook, a semantic markup language for technical documentation defined in XML (and originally SGML). DocBook was created around 1991 by HaL Computer Systems and O'Reilly & Associates, later maintained by the OASIS DocBook Technical Committee. The vocabulary provides over 400 element types designed specifically for books, articles, reference pages, and technical manuals — including structural elements (book, chapter, section, appendix), block elements (para, programlisting, table, figure), and inline elements (emphasis, filename, command, classname). Authors write content focusing on meaning rather than appearance, and separate stylesheets transform the DocBook source into output formats like HTML, PDF, EPUB, and man pages. One advantage is strict separation of content and presentation — a single DocBook source document can generate a printed book, a website, an ebook, and Unix man pages through different transformation pipelines, without any content duplication. The rich semantic vocabulary is another strength: because elements like <command>, <filename>, and <errorcode> carry precise meaning, toolchains can index, cross-reference, and validate technical content in ways that generic markup cannot. DocBook has been adopted by major open-source projects including the Linux kernel documentation, GNOME, KDE, and FreeBSD for their official documentation, and it remains the standard for single-source technical publishing.
Initial release: 1991
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 would I convert DBK to PFM?

Image output from DocBook files is handy for presentations, previews, and contexts where text rendering is not available.

Which apps support PFM?

Standard image viewers on Windows, Mac, and Linux handle PFM. For editing, try GIMP, Photoshop, or Paint.NET.

Can I convert multiple DBK files to PFM?

Yes — upload several DBK files at once and batch-convert them all to PFM in a single session.

Does converting DBK to PFM require registration?

No signup is needed. Open the converter page, upload your DBK file, and get your PFM output right away.

Can I preview the PFM output before downloading?

Conversion results are available for download immediately. Check the output to confirm it meets your expectations.

Is DBK to PFM conversion free?

Yes — Convertio offers free DBK to PFM conversion. Premium plans are available for heavier workloads and larger files.