Add your BDF file
Drop one or more .bdf files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
BDF to TTF
Converting a .bdf font to .ttf repackages the same glyphs and metrics for a different delivery target. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop BDF files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting Glyph Bitmap Distribution Format to TrueType font
Converting a .bdf font to .ttf repackages the same glyphs and metrics for a different delivery target. A .bdf file is a bitmap font written as plain text. Each glyph is stored as a small grid of hexadecimal rows describing which pixels are lit, together with its bounding box, advance width, and character encoding — no curves, no hinting, just the exact pixels the font was designed to produce at one specific size.
TrueType fonts, extension .ttf, describe each glyph as outlines built from quadratic Bezier curves plus hinting programs that fine-tune rendering at small sizes. It has been the workhorse desktop font format for over three decades and remains the base technology inside most fonts installed today. For this route the practical draw is installs and renders everywhere, from decades-old systems to current ones and excellent small-size rendering when well hinted — balanced against uncompressed, so files are several times larger than their WOFF2 equivalents on the web, which is worth knowing before you commit a large batch.
Why convert BDF to TTF?
The practical trigger for this conversion is usually a mismatch: with .bdf, single-size by design; enlarging a BDF font produces visible stair-stepping rather than smooth glyphs. Switching to .ttf buys you installs and renders everywhere, from decades-old systems to current ones, which is why it is the better fit for installing fonts on Windows, macOS, and Linux desktops. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
BDF vs TTF at a glance
| Aspect | Glyph Bitmap Distribution Format (.bdf) | TrueType font (.ttf) |
|---|---|---|
| Format type | Lossless — every pixel or sample is preserved exactly | Container — quality depends on the codecs and settings inside |
| How it stores data | the whole file is ASCII text: STARTFONT, FONTBOUNDINGBOX, and a STARTCHAR/ENDCHAR block per glyph, which makes it readable and diffable | an sfnt container of tagged binary tables: glyf for outlines, cmap for character mapping, name for naming, hhea and hmtx for metrics |
| Strongest at | bringing a terminal or retro-computing bitmap font into a browser or design tool that only loads outline fonts | installing fonts on Windows, macOS, and Linux desktops |
| Weak spot | single-size by design; enlarging a BDF font produces visible stair-stepping rather than smooth glyphs | uncompressed, so files are several times larger than their WOFF2 equivalents on the web |
| Metadata | the family name, pixel size, and FONT_ASCENT/FONT_DESCENT values are carried into the converted font's name and vertical-metric tables, and each glyph keeps its DWIDTH advance and encoding. XLFD property fields that have no sfnt equivalent are dropped | the name table stores family and style names, version, copyright, trademark, designer, and license URL, while OS/2 table bits declare embedding and installation permissions |
Pick TTF as the output
Select .ttf in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if TTF is selectable, the route is real and validated.
Convert on your device
Press Convert. The font tables are parsed and rewritten locally with fonteditor-core; glyph outlines, hinting, and kerning survive the trip.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid TTF file. Outputs keep the original filename with the .ttf extension.
BDF to TTF questions, answered
Will converting BDF to TTF lose quality?
Since bdf is lossless-oriented and ttf is container-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .ttf itself requires.
Is it private to convert BDF files here?
Yes — the .bdf file is processed inside your browser tab and never uploaded. The font tables are parsed and rewritten locally with fonteditor-core; glyph outlines, hinting, and kerning survive the trip. Close the tab and the file is gone from memory.
Where will the TTF file work?
Every operating system — Windows, macOS, Linux, iOS, Android — installs and renders .ttf natively, and all browsers accept it as a web font. On the web it works but wastes bandwidth, which is why the standard split is serving WOFF2 online and keeping TTF for desktop installation.
Will the TTF file be bigger or smaller than my BDF?
It depends on the content: an sfnt container of tagged binary tables: glyf for outlines, cmap for character mapping, name for naming, hhea and hmtx for metrics. Convert one representative file first and compare before batch-processing a large set.
What happens to the metadata in my BDF file?
In .bdf, the family name, pixel size, and FONT_ASCENT/FONT_DESCENT values are carried into the converted font's name and vertical-metric tables, and each glyph keeps its DWIDTH advance and encoding. XLFD property fields that have no sfnt equivalent are dropped. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.