TTF to PDB Converter

Turn TrueType fonts into Palm Database images online for free

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Retro-Compatible Output

Render your TTF glyphs into PDB format — the standard image type for Palm OS devices and vintage handheld computing platforms.

Online Conversion Tool

Convert TTF to PDB directly from your browser. No Palm development kits or specialty software needed on your machine.

Data Protection

Your uploaded fonts are removed immediately after the conversion process. PDB outputs are deleted from our servers within 24 hours.

How to convert TTF to PDB

1

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

2

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

3

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

About formats

TTF (TrueType Font) is a scalable outline font format developed by Apple Computer in the late 1980s and first shipped with Mac System 7 on May 13, 1991. Microsoft licensed the technology shortly after and included TrueType support in Windows 3.1 in 1992, establishing it as the dominant desktop font technology for over a decade. TrueType describes glyph shapes using quadratic Bezier splines — simpler mathematically than the cubic Bezier curves in PostScript fonts — stored alongside a powerful instruction set (the "hinting" language) that controls exactly how outlines are rasterized at each pixel size. This instruction-based hinting gives type designers pixel-level control over rendering at small sizes on low-resolution screens, producing exceptionally crisp text. The format stores all font data — outlines, metrics, kerning, naming, and hinting — in a single file organized as a directory of tagged data tables. One advantage is universal platform support: TTF files render natively on Windows, macOS, Linux, iOS, Android, and virtually every operating system and web browser without conversion or plugins. The byte-code hinting system is another distinctive strength, enabling screen rendering quality that remained superior to competing technologies until high-DPI displays reduced the importance of pixel-level optimization. TrueType's table-based architecture also proved remarkably extensible, serving as the structural foundation for the OpenType specification that added advanced typographic features and PostScript outline support on top of the TrueType container.
Developer: Apple Computer
Initial release: May 13, 1991
PDB (Palm Database) is a generic database container format created by Palm, Inc. for the Palm OS platform, first appearing with the original PalmPilot in March 1996. In the ebook context, PDB files most commonly use the PalmDOC or Plucker encoding to store readable text with basic formatting. The format consists of a 78-byte header identifying the database name, creation date, and record count, followed by a record index table and the data records themselves. PalmDOC-encoded PDB files use a simple LZ77-based compression scheme to pack plain text efficiently, while Plucker extends this with HTML rendering, image support, and hyperlink navigation. PDB ebooks powered a thriving mobile reading ecosystem years before dedicated e-readers existed — millions of Palm OS users carried entire libraries on devices like the Palm V, Tungsten, and Treo handhelds. A primary advantage is extreme simplicity: the flat record structure and minimal overhead mean PDB files parse instantly even on severely constrained hardware with limited memory and processing power. The open, well-documented structure is another strength, having spawned numerous reader applications across Palm OS, Windows, and later mobile platforms. Though the Palm platform is long discontinued, PDB ebooks remain accessible through conversion tools and readers like Calibre, and the format holds historical significance as one of the earliest practical mobile ebook solutions.
Developer: Palm, Inc.
Initial release: March 1996

Frequently Asked Questions

Why convert TTF to PDB?

PDB is the image format for Palm OS ImageViewer — useful for displaying font specimens on vintage Palm handhelds or preserving glyph renders in Palm archives.

What devices read PDB images?

Palm OS devices with ImageViewer, Palm emulators (POSE, Mu), and certain retro computing tools can display PDB images.

Is the image quality good in PDB?

PDB supports limited resolution suited to Palm screens. The output is optimized for small displays, so glyph rendering is clear at those dimensions.

Can I convert several TTF fonts at once?

Yes. Convertio lets you batch upload multiple TTF fonts and generate individual PDB images for each — efficient for building Palm font libraries.

Does this cost anything?

Not at all. Convertio provides free TTF to PDB conversion — upload and download without any payment.

TTF to PDB Quality Rating

4.6 (35 votes)
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