# Convert HTML to PDB

> Convert HTML 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/html-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), [HTML converter](https://www.converterrr.com/html-converter).

## How to convert HTML to PDB

1. **Add your HTML files.** Drag and drop HTML 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.
- HTML files are typically used for web pages and email templates, 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.

## HTML vs PDB

|  | HTML | PDB |
| --- | --- | --- |
| Full name | HyperText Markup Language | Palm eBook |
| Type | Document | eBook |
| Extensions | .html, .htm, .xhtml | .pdb |
| MIME type | text/html | application/vnd.palm |
| Best for | web pages and email templates | archived Palm e-books |
| Properties | plain-text markup, open standard | legacy format |

**HTML:** HTML is the markup language of the web. Converting to HTML makes a document readable in any browser.

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

## Related conversions

- [HTML to PDF](https://www.converterrr.com/html-to-pdf) (cloud)
- [PDF to PDB](https://www.converterrr.com/pdf-to-pdb) (cloud)
- [HTML to DOCX](https://www.converterrr.com/html-to-docx) (in the browser)
- [DOCX to PDB](https://www.converterrr.com/docx-to-pdb) (cloud)
- [HTML to EPUB](https://www.converterrr.com/html-to-epub) (in the browser)
- [EPUB to PDB](https://www.converterrr.com/epub-to-pdb) (cloud)
- [HTML to TXT](https://www.converterrr.com/html-to-txt) (in the browser)
- [TXT to PDB](https://www.converterrr.com/txt-to-pdb) (cloud)
- [HTML to DOC](https://www.converterrr.com/html-to-doc) (cloud)
- [MOBI to PDB](https://www.converterrr.com/mobi-to-pdb) (cloud)
- [HTML to Markdown](https://www.converterrr.com/html-to-md) (in the browser)
- [HTML to MOBI](https://www.converterrr.com/html-to-mobi) (cloud)

## Convert HTML to other formats

[HTML to PDF](https://www.converterrr.com/html-to-pdf), [HTML to DOCX](https://www.converterrr.com/html-to-docx), [HTML to EPUB](https://www.converterrr.com/html-to-epub), [HTML to TXT](https://www.converterrr.com/html-to-txt), [HTML to DOC](https://www.converterrr.com/html-to-doc), [HTML to Markdown](https://www.converterrr.com/html-to-md), [HTML to MOBI](https://www.converterrr.com/html-to-mobi), [HTML to AZW3](https://www.converterrr.com/html-to-azw3), [HTML to ODT](https://www.converterrr.com/html-to-odt), [HTML to RTF](https://www.converterrr.com/html-to-rtf), [HTML to LaTeX](https://www.converterrr.com/html-to-tex), [HTML to IPYNB](https://www.converterrr.com/html-to-ipynb), [HTML to FB2](https://www.converterrr.com/html-to-fb2), [HTML to reST](https://www.converterrr.com/html-to-rst), [HTML to Typst](https://www.converterrr.com/html-to-typ), [HTML to AsciiDoc](https://www.converterrr.com/html-to-adoc), [HTML to Org](https://www.converterrr.com/html-to-org), [HTML to MediaWiki](https://www.converterrr.com/html-to-wiki), [HTML to OPML](https://www.converterrr.com/html-to-opml), [HTML to DocBook](https://www.converterrr.com/html-to-docbook), [HTML to LIT](https://www.converterrr.com/html-to-lit), [HTML to Textile](https://www.converterrr.com/html-to-textile), [HTML to JATS](https://www.converterrr.com/html-to-jats), [HTML to Man](https://www.converterrr.com/html-to-man)

## Convert other formats to PDB

[PDF to PDB](https://www.converterrr.com/pdf-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), [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)

## HTML to PDB: frequently asked questions

### How do I convert HTML to PDB?

Drop your HTML 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 HTML 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 HTML 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 HTML to PDB reduce quality?

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

### Can I convert multiple HTML 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.