HEIF to PDB Converter

Transform HEIF images into PDB eBooks — free converter

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High Fidelity

Convertio optimizes the HEIF to PDB pipeline for quality — the resulting file reflects the full detail captured in your original image.

Universal Access

Convert HEIF to PDB from any device — Windows, macOS, Linux, or mobile. All you need is a browser and an internet connection.

Bulk Conversion

Process entire collections of HEIF images at once — batch conversion to PDB eliminates the need to handle files one at a time.

How to convert HEIF 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

HEIF (High Efficiency Image File Format) is a container format for images and image sequences standardized by the Moving Picture Experts Group as ISO/IEC 23008-12, first published in 2015. HEIF is built on the ISO Base Media File Format (ISOBMFF, the same container used for MP4 video), providing a flexible structure that can hold single images, image collections, image sequences (like animations or bursts), and derived images with non-destructive editing operations. The container is codec-agnostic — while the most common implementation pairs HEIF with HEVC/H.265 compression (branded as HEIC by Apple), the standard also accommodates AV1 compression (creating the AVIF variant), H.266/VVC, and other future codecs. HEIF supports features that JPEG lacks: 10-bit and 12-bit color depth, wide color gamuts (Display P3, BT.2020), lossless compression, alpha transparency, depth maps, thumbnail images, and Exif/XMP metadata — all within a single file. Auxiliary image items can store computational photography data like depth maps, HDR gain maps, and semantic segmentation masks. One advantage is the format's future-proof architecture: by separating the container from the codec, HEIF can adopt newer, more efficient compression technologies without changing the file structure, metadata handling, or application-level APIs. The substantial compression improvement over JPEG is another core strength — HEVC-based HEIF typically achieves 40-50% file size reduction compared to JPEG at the same visual quality, beneficial for storage and bandwidth. HEIF is supported by Apple's ecosystem (iOS, macOS), Windows 10/11, Android 10+, GIMP, ImageMagick, and Adobe products.
Initial release: 2015
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 would I convert HEIF to PDB?

Converting HEIF to PDB lets you include MPEG photos in eBook projects — the image is embedded in a format compatible with e-readers and reading apps.

What software can open PDB?

PDB files can be opened with iSilo, Plucker, Palm OS reading apps, Calibre, and FBReader.

Is my HEIF file safe during conversion?

Yes — uploaded HEIF files are deleted immediately after conversion, and the PDB output is removed from servers within 24 hours for your privacy.

Can I convert multiple HEIF files to PDB at once?

Batch conversion is supported. Queue multiple HEIF files and each one will be processed to PDB independently, ready for bulk download.

Is HEIF to PDB conversion free?

The converter is free for everyday use. Convertio offers premium plans when you need extended limits or priority processing for HEIF to PDB.

HEIF to PDB Quality Rating

3.8 (2 votes)
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