Convert vintage Palm OS PalmDoc / AportisDoc (.pdb, .prc) eBook databases into clean, structured GitHub Flavored Markdown directly in your browser. 100% private client-side LZ77 decompression with zero server uploads.
Detailed side-by-side format architecture for PDB Document (.pdb) and Markdown Document (.md). Every conversion executes strictly within isolated browser memory without network transit.
Drag and drop your .pdb file onto the working surface or use the system file dialog. File magic bytes are verified locally on device.
Select a quality preset (Lossless, Visually Lossless, Balanced, Smallest) or adjust advanced encoding switches in the options panel.
Click CONVERT to execute local WebAssembly compilation. Save the finished .md directly to local storage, or stage it for chaining.
Prefer local shell scripting? Run this standard POSIX command on your machine to achieve equivalent transcoding without a web interface:
# Convert PDB to MD locally
pandoc input.pdb -o output.mdWorking with files across multiple web pages? The official convrtr Chrome Extension adds native Side Panel docking, right-click context menu media extraction, and visible viewport capture. Powered by the same zero-upload client-side WebAssembly engine.
PalmDoc (also known as AportisDoc or Palm Database format with 'TEXt' or 'REAd' type) was the universal eBook and document format for Palm OS handhelds (PalmPilot, Handspring Visor, Sony CLIÉ, Palm Treo). It packages documents into 4096-byte compressed record blocks using a proprietary LZ77 variant.
Modern devices, smartphones, and note-taking apps (Obsidian, Notion, Logseq) cannot open Palm OS database files. Converting PalmDoc files to Markdown extracts the text, restores chapter headings, and makes vintage digital manuscripts readable everywhere.
The converter reads the 78-byte Palm Database record directory, locates PalmDoc Record 0 to inspect compression parameters, and decompresses each block using pure TypeScript sliding-window LZ77 algorithms, resolving literal runs, 2-byte distance offsets, and space-prefixed character tokens.
Never. All parsing, decompression, and Markdown structuring run entirely client-side in your browser's local memory. Your files are never sent over the internet.
PDB Document (PDB) and Markdown Document (MD) serve distinct roles across the digital workflow. Converting to MD provides optimized compatibility, modern compression efficiency, or standardized playback across web browsers, operating systems, and media production environments.
The output format (MD) is inherently lossless or supports lossless operation. Your original visual or audio fidelity is mathematically preserved without quantization artifacts.
Never. convrtr is architected with a strict zero-upload model. All processing, decoding, decompression, and encoding happen 100% locally on your machine using sandboxed WebAssembly and Web Workers. Your data never touches an external server, database, or analytics collector.
You can execute this conversion locally via command-line utilities such as ffmpeg, cwebp, or ImageMagick. For example: see the developer terminal recipe provided in the technical specifications dossier above. convrtr provides the identical local-first capability directly inside your browser without installing CLI packages.
Yes. You can drop multiple .pdb files into the instrument to process them concurrently in browser Web Workers, or click 'Open in Master Studio' to queue mixed formats, configure individual targets, and export as a single ZIP archive.
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