PCX to MOBI Converter

Turn PCX images into MOBI e-books — free online

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Cross-Platform

Works on Windows, macOS, Linux, iOS, and Android. Convert PCX to MOBI from whichever device you have at hand — no restrictions.

No Installation

Everything happens in the browser. Open Convertio, upload your PCX file, and download the MOBI result — zero setup required.

Effortless Conversion

The converter handles everything automatically. Just upload your PCX image, pick MOBI, and the file is ready in moments.

How to convert PCX to MOBI

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose mobi or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your mobi file right afterwards

About formats

PCX (PiCture eXchange) is a raster image format created by ZSoft Corporation in 1985 as the native format of their PC Paintbrush application, one of the first painting programs for IBM PC compatibles. The format uses a simple run-length encoding (RLE) compression scheme that works by replacing consecutive identical pixel values with a count-value pair, achieving modest compression on images with large areas of uniform color. A PCX file consists of a 128-byte header (specifying dimensions, color depth, palette information, DPI, and encoding method), the RLE-compressed pixel data organized in scan-line order, and an optional 256-color palette appended after the image data. The format evolved through several versions supporting increasing color depths: 1-bit monochrome, 4-bit (16 colors), 8-bit (256 colors), and 24-bit true color using multiple color planes. PCX became one of the most popular image formats during the DOS era, widely supported by paint programs, word processors, desktop publishers, and early games throughout the late 1980s and early 1990s. One advantage was broad DOS-era software compatibility — PCX served as a practical interchange format when competing programs used proprietary raster formats. The simplicity of RLE decoding is another strength, requiring minimal CPU and memory resources ideal for the hardware of that period. While PNG, JPEG, and other modern formats have replaced PCX in contemporary use, the format remains encountered in legacy archives and retro computing contexts.
Developer: ZSoft Corporation
Initial release: 1985
MOBI is an ebook format originally developed by Mobipocket SA, a French company founded in 2000 that was later acquired by Amazon in 2005. The format builds on the PalmDOC/PDB container structure, adding support for HTML-based content markup, embedded images, a DRM layer, and a JavaScript subset for limited interactivity. MOBI files use a record-based database architecture inherited from Palm OS, with a header structure containing metadata like title, author, publisher, and language followed by compressed HTML content records. The format became the foundation of Amazon's early Kindle ecosystem — the original AZW format used on first-generation Kindles was essentially MOBI with Amazon's own DRM wrapper. MOBI supports reflowable text with basic formatting including bold, italic, headings, lists, and tables, as well as internal hyperlinks and a built-in table of contents. One advantage is broad device compatibility: MOBI files are recognized by Kindle devices and apps spanning over a decade of hardware, as well as numerous third-party readers on desktop and mobile platforms. The format's lightweight structure is another strength — even long novels produce compact files that load quickly on modest hardware. While Amazon has since moved to the more capable AZW3/KF8 format for new publishing, MOBI remains widely circulated in existing ebook libraries and continues to be produced by conversion tools like Calibre for maximum Kindle compatibility.
Developer: Mobipocket SA
Initial release: 2000

Frequently Asked Questions

Why convert PCX to MOBI?

PCX was designed for 1980s PC software. Converting to MOBI modernizes the file so it works with contemporary tools, browsers, and operating systems.

What software opens MOBI?

Amazon Kindle devices and apps, Calibre, FBReader, and Moon+ Reader.

Is PCX to MOBI conversion free?

Standard conversions are free on Convertio. Premium plans provide additional benefits for users who need to process larger volumes regularly.

Do I need to install anything?

No — the entire conversion runs in your web browser. There is nothing to download or install on your computer or phone to convert PCX to MOBI.

Where can I upload PCX files from?

You can upload from your local device, Google Drive, Dropbox, or paste a direct URL. Convertio pulls the PCX file from any of these sources.

Does this work on my phone?

Yes — the Convertio converter runs in any mobile browser. Upload your PCX file, pick MOBI, and download the result directly on your phone.