CFF to XV Converter

Render CFF PostScript fonts as XV thumbnail images online for free

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Unix Thumbnails

XV is the classic Unix thumbnail format. Converting CFF to XV produces compact glyph preview images for XV visual schnauzer browsing.

Instant Conversion

The tiny XV dimensions mean rendering completes almost instantly — your CFF font thumbnail is ready in a flash.

Data Privacy

Uploaded CFF fonts are removed immediately after conversion and XV output is deleted within 24 hours for secure handling.

How to convert CFF to XV

1

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

2

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

3

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

About formats

CFF (Compact Font Format) is a font outline format developed by Adobe Systems around 1996 as a more efficient successor to the Type 1 font representation. CFF uses Type 2 charstrings — an optimized encoding that supports multiple arguments per operator, default value elision, and shared subroutines — to describe the same cubic Bezier glyph outlines as Type 1 but with substantially less storage. A typical CFF font is 20-50% smaller than its Type 1 equivalent. The format can function as a standalone font file or, more commonly, as the outline data table inside an OpenType font container (the CFF table in OTF files with PostScript outlines). CFF supports multiple fonts within a single file through its FontSet structure, sharing global subroutines across the collection to further reduce size. One advantage is compression efficiency without lossy degradation — every control point and hint is preserved exactly, just encoded more compactly. The format also inherits the full hinting capability of Type 1, including stem hints, counter hints, and alignment zones that ensure crisp rendering on low-resolution screens and printers. CFF2, an evolution introduced with OpenType 1.8, adds support for font variations (variable fonts) by allowing interpolation across multiple design axes. Broad support in PDF viewers, web browsers via OpenType, and professional design software makes CFF one of the most widely deployed outline formats in digital typography.
Developer: Adobe Systems
Initial release: 1996
XV is an alternate file extension for the VIFF (Visualization Image File Format) developed by Khoral Research as part of the Khoros scientific image processing environment, which originated at the University of New Mexico around 1990. The .xv extension and the .viff extension refer to the same underlying format — a container with a 1024-byte header encoding image dimensions, data type (from single-bit to double-precision float and complex numbers), color space, band count, and optional spatial location metadata, followed by color map data and pixel values. The XV extension became common on systems where Khoros was installed alongside other X Window System tools, and in some research communities .xv was preferred over .viff as a shorter alternative. Khoros itself was a pioneering visual programming system where scientists assembled image processing pipelines by wiring together processing nodes in a graphical canvas — an approach that predated and influenced similar environments in MATLAB, LabVIEW, and commercial remote sensing packages. One advantage of the VIFF/XV format is its ability to store data at scientific precision levels — floating-point and complex number pixel values preserve measurement accuracy that would be lost in photographic formats limited to 8-bit or 16-bit integers, making it valuable for spectral analysis, computational physics output, and satellite imagery. The multi-band architecture provides another strength, allowing a single file to hold dozens of spectral channels from multispectral or hyperspectral sensors without splitting data across multiple files. XV files are supported by ImageMagick and can be converted to modern image formats for visualization or publication.
Developer: Khoral Research
Initial release: 1990

Frequently Asked Questions

Why convert CFF to XV?

XV is the thumbnail format used by the XV image viewer on Unix. Converting CFF to XV creates compact glyph previews compatible with this classic Unix tool.

How do I open an XV file?

The XV image viewer on Unix displays XV files natively. ImageMagick and GIMP can also read XV thumbnail images for viewing and further processing.

Is XV a thumbnail-only format?

XV files are typically small thumbnails used by the XV visual schnauzer for browsing image collections. They are not meant for high-resolution output.

What resolution are XV images?

XV thumbnails are small by design — typically around 80x60 pixels. Font glyphs are rasterized to this compact size for quick preview purposes.

Is CFF to XV free?

Yes — Convertio converts CFF to XV at no charge, entirely online with no downloads needed.