OTF to WBMP Converter

Render OpenType font glyphs as wireless bitmap images online for free

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

Monochrome Glyphs

Reduce OTF font data to crisp 1-bit WBMP bitmaps — perfectly suited for e-ink displays, embedded systems, and constrained-bandwidth environments.

Secure Conversion

Your uploaded OTF files are deleted immediately after processing and WBMP outputs are automatically removed within 24 hours.

Works in Any Browser

No software to install — convert OTF fonts to WBMP images from Chrome, Firefox, Safari, or Edge on any platform.

How to convert OTF to WBMP

1

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

2

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

3

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

About formats

OTF (OpenType Font) is a scalable font format jointly developed by Microsoft and Adobe, announced in 1996 and later standardized as ISO/IEC 14496-22. OpenType unifies TrueType and PostScript font technologies under a single container — OTF files with PostScript outlines use CFF/CFF2 tables for cubic Bezier curves, while those with TrueType outlines use quadratic splines in glyf tables (these typically carry the .ttf extension despite being OpenType). The format supports up to 65,535 glyphs per font, enabling comprehensive coverage of Unicode's vast character repertoire including Latin, Cyrillic, Arabic, CJK, and mathematical symbols within one file. Advanced typographic features are encoded in GSUB (glyph substitution) and GPOS (glyph positioning) tables, powering contextual alternates, ligatures, small caps, stylistic sets, and complex script shaping. A defining advantage is cross-platform consistency — the same OTF file renders identically on Windows, macOS, Linux, iOS, and Android without platform-specific builds. The rich OpenType Layout feature system is another major strength, giving designers fine-grained typographic control that was previously impossible in a single font file. OpenType 1.8 introduced variable font technology, allowing continuous interpolation across weight, width, slant, and custom design axes within a single compact file. Universal support in web browsers, design applications, office suites, and operating systems makes OTF the dominant professional font format in modern digital typography.
Initial release: 1996
WBMP (Wireless Bitmap) is a monochrome (1-bit, black and white) image format defined as part of the Wireless Application Protocol (WAP) specification, developed by the WAP Forum (later consolidated into the Open Mobile Alliance) around 1998. The format was designed for the extremely constrained mobile devices of the late 1990s and early 2000s — phones with small monochrome screens, minimal processing power, and narrow bandwidth GSM data connections. WBMP uses the simplest possible encoding: a type identifier byte (always 0 for the only defined type), width and height encoded as multi-byte integers using a variable-length scheme, and the raw pixel data where each bit represents one pixel (0 for white, 1 for black) packed eight per byte. There is no compression, no metadata, and no color — the format is purely a minimal container for delivering small monochrome graphics to WAP-era mobile browsers. One advantage was extreme efficiency on constrained devices — WBMP images could be decoded with virtually zero CPU overhead and minimal memory, critical on early mobile hardware running at single-digit megahertz clock speeds. The tiny file sizes are another strength: a typical WBMP icon occupied just a few hundred bytes, practical for transfer over 9.6 kbps GSM data channels. While the WAP ecosystem has been entirely superseded by modern mobile web browsers capable of rendering full-color JPEG, PNG, and WebP images, WBMP files remain encountered in archived mobile content from that transitional era.
Developer: WAP Forum
Initial release: 1998

Frequently Asked Questions

Why convert OTF to WBMP?

WBMP is a monochrome bitmap format for WAP and low-bandwidth mobile displays. Converting OTF creates lightweight glyph images for embedded devices.

How do I open a WBMP file?

WBMP files open in GIMP, IrfanView, ImageMagick viewers, and WAP-compatible mobile browsers. Some modern image editors also support the format.

Is WBMP only black and white?

Yes — WBMP stores images as 1-bit monochrome. Font glyphs are rendered as solid black shapes on a white background, which suits text clarity.

Can I convert multiple OTF fonts?

Upload several OTF files and Convertio will convert each into individual WBMP images — efficient for generating glyph bitmaps in bulk.

Is this free?

Yes — OTF to WBMP conversion is entirely free on Convertio. No downloads, no account needed — works right in your browser.

OTF to WBMP Quality Rating

5.0 (4 votes)
You need to convert and download at least 1 file to provide feedback!