# Convert PDF to PDB

> Convert PDF to PDB online for free in seconds. Files are processed in a secure, isolated sandbox and deleted automatically. No sign-up, no watermarks.

URL: https://www.converterrr.com/pdf-to-pdb

- Runs in an isolated cloud sandbox with Calibre: files are deleted automatically, and the job uses cloud credits.
- Engines: Calibre (cloud).
- API: available. `POST /api/v1/jobs` with `"output_format": "pdb"` (paid plans).
- More: [Document converter](https://www.converterrr.com/document-converter), [PDF converter](https://www.converterrr.com/pdf-converter), [Compress PDF](https://www.converterrr.com/compress-pdf).

## How to convert PDF to PDB

1. **Add your PDF files.** Drag and drop PDF files onto the converter, paste them, or click to browse. You can add several at once.
2. **Choose PDB.** PDB is already selected. Open Options if you want to change quality, size or metadata.
3. **Convert.** Click Convert. Files are processed in a secure cloud sandbox and are usually ready in seconds.
4. **Download your PDB.** Download each PDB file, or everything at once as a ZIP.

## Good to know

- PDB reflows to any screen size, with chapters and table of contents kept where the source has them.
- PDF files are typically used for contracts, forms, reports, e-books and anything meant to be shared or printed, while PDB is best for archived Palm e-books.
- This conversion runs on Calibre in an isolated cloud sandbox. Files are encrypted in transit and deleted automatically.

## PDF vs PDB

|  | PDF | PDB |
| --- | --- | --- |
| Full name | Portable Document Format | Palm eBook |
| Type | Document | eBook |
| Extensions | .pdf | .pdb |
| MIME type | application/pdf | application/vnd.palm |
| Best for | contracts, forms, reports, e-books and anything meant to be shared or printed | archived Palm e-books |
| Properties | open standard, multi-page | legacy format |

**PDF:** PDF preserves a document's exact layout, fonts and images so it looks identical on every device. It's the standard for sharing and printing documents.

**PDB:** PDB is an e-book format from Palm devices (eReader and PalmDOC).

The other way around: [convert PDB to PDF](https://www.converterrr.com/pdb-to-pdf).

## Related conversions

- [PDB to PDF](https://www.converterrr.com/pdb-to-pdf) (cloud)
- [PDF to PNG](https://www.converterrr.com/pdf-to-png) (cloud)
- [PDF to JPG](https://www.converterrr.com/pdf-to-jpg) (cloud)
- [DOCX to PDB](https://www.converterrr.com/docx-to-pdb) (cloud)
- [PDF to DOCX](https://www.converterrr.com/pdf-to-docx) (cloud)
- [EPUB to PDB](https://www.converterrr.com/epub-to-pdb) (cloud)
- [PDF to JPEG](https://www.converterrr.com/pdf-to-jpeg) (cloud)
- [TXT to PDB](https://www.converterrr.com/txt-to-pdb) (cloud)
- [PDF to SVG](https://www.converterrr.com/pdf-to-svg) (cloud)
- [MOBI to PDB](https://www.converterrr.com/mobi-to-pdb) (cloud)
- [PDF to EPUB](https://www.converterrr.com/pdf-to-epub) (cloud)
- [HTML to PDB](https://www.converterrr.com/html-to-pdb) (cloud)

## Convert PDF to other formats

[PDF to PNG](https://www.converterrr.com/pdf-to-png), [PDF to JPG](https://www.converterrr.com/pdf-to-jpg), [PDF to DOCX](https://www.converterrr.com/pdf-to-docx), [PDF to JPEG](https://www.converterrr.com/pdf-to-jpeg), [PDF to SVG](https://www.converterrr.com/pdf-to-svg), [PDF to EPUB](https://www.converterrr.com/pdf-to-epub), [PDF to TXT](https://www.converterrr.com/pdf-to-txt), [PDF to HTML](https://www.converterrr.com/pdf-to-html), [PDF to TIFF](https://www.converterrr.com/pdf-to-tiff), [PDF to MOBI](https://www.converterrr.com/pdf-to-mobi), [PDF to AZW3](https://www.converterrr.com/pdf-to-azw3), [PDF to RTF](https://www.converterrr.com/pdf-to-rtf), [PDF to FB2](https://www.converterrr.com/pdf-to-fb2), [PDF to LIT](https://www.converterrr.com/pdf-to-lit)

## Convert other formats to PDB

[DOCX to PDB](https://www.converterrr.com/docx-to-pdb), [EPUB to PDB](https://www.converterrr.com/epub-to-pdb), [TXT to PDB](https://www.converterrr.com/txt-to-pdb), [MOBI to PDB](https://www.converterrr.com/mobi-to-pdb), [HTML to PDB](https://www.converterrr.com/html-to-pdb), [Markdown to PDB](https://www.converterrr.com/md-to-pdb), [AZW3 to PDB](https://www.converterrr.com/azw3-to-pdb), [ODT to PDB](https://www.converterrr.com/odt-to-pdb), [RTF to PDB](https://www.converterrr.com/rtf-to-pdb), [FB2 to PDB](https://www.converterrr.com/fb2-to-pdb), [AZW to PDB](https://www.converterrr.com/azw-to-pdb), [LIT to PDB](https://www.converterrr.com/lit-to-pdb), [LRF to PDB](https://www.converterrr.com/lrf-to-pdb)

## PDF to PDB: frequently asked questions

### How do I convert PDF to PDB?

Drop your PDF file onto the converter above, make sure PDB is selected, and click Convert. When it's done, download the PDB file — it usually takes a few seconds.

### Is it safe to convert PDF to PDB here?

Yes. Your file is sent over an encrypted connection to an isolated sandbox that's created for your job only, then both the original and the result are deleted automatically.

### Is the PDF to PDB converter free?

Yes. Cloud conversions like this one use credits, and you get free credits every day (3 without an account, 10 with a free account).

### Will converting PDF to PDB reduce quality?

No — PDB preserves the content of your PDF file as faithfully as the format allows.

### Can I convert multiple PDF files at once?

Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP.

### Can I convert PDB back to PDF?

Yes — use our PDB to PDF converter. Note that converting back and forth between formats can't recover detail lost to lossy compression.