TXTZ to PDB Converter
Convert TXTZ to PDB online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
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Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
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What is a TXTZ file?
The TXTZ format is a compressed eBook container associated with the Calibre eBook management ecosystem. It is technically a standard ZIP archive that bundles a raw text file (TXT) with an Open Packaging Format (OPF) metadata file (metadata.opf). This structure addresses the limitations of plain text by permanently associating bibliographic data-such as author, title, and series information-with the document content within a single compressed binary.
How to open a TXTZ file
As a ZIP-compliant container, TXTZ files can be opened by changing the file extension to .zip and using native system utilities like Windows File Explorer or Apple Archive Utility to extract the text. However, to view the file as a cohesive eBook with metadata, the Calibre software suite is required. Standard text editors cannot open the file directly without prior decompression.
txtz Technical Info
- Full Name
- Calibre Zipped Text
- Developed By
- Kovid Goyal (Calibre)
- Initial Release
- 2006
- MIME Type
- application/x-txtz
What is a PDB file?
In the context of eBooks, the PDB (Palm Database) format is a sequential record-based container originally engineered for the Palm OS platform. The file structure consists of a fixed-length header containing metadata (such as Type and Creator IDs) followed by a list of record offsets and the raw data records. For digital reading, these records typically contain text compressed via the PalmDOC (LZ77) or zTXT algorithms, effectively acting as a wrapper for eReader content.
How to open a PDB file
Modern desktop operating systems do not include native handlers for Palm OS databases. Users looking to access eBook content within PDB files should use Calibre or STDU Viewer, which can interpret the specific PalmDOC compression. Note that PDB is also an extension for 'Program Database' debug files in Visual Studio; these are binary disparate and require Microsoft development tools, not eBook readers.
PDB Technical Info
- Full Name
- Palm Database
- Developed By
- Palm, Inc.
- Initial Release
- 1996
- MIME Type
- application/vnd.palm
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Purpose-built for speed, privacy, and breadth of format support.
Convert TXTZ to PDB in seconds
Every TXTZ to PDB conversion runs on our servers, so your device stays fast and the output quality stays intact.
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No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.
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Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.
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Developer API
Convert TXTZ to PDB via API
Automate TXTZ to PDB conversions in three steps: create a job, upload your file, then poll for the result.
# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"tag": "txtz-to-pdb",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "pdb"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.txtz
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.