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If you have ever opened a downloaded book in Apple's Books app only to find a blank screen or a mess of question marks, you know the quiet frustration. OmniReader Pro steps into that gap. It reads EPUB, CHM and Kindle files without ceremony, and it handles the encoding mismatches that turn a perfectly good Chinese or Japanese novel into unreadable gibberish.
Take a typical task: you have a CHM reference manual with scrambled chapter headings. You drop it onto OmniReader Pro. The sidebar collapses away, leaving a clean reading pane. A quick trip to the file-encoding menu sorts the text into legible form. You search for a function name; every occurrence lights up in the text, and a full-text search scans the entire book in a second. When you need a diagram buried in the pages, you extract all images to a folder with one command. Page turning is a tap of the arrow keys, and you can zoom in on a small screenshot without the layout breaking.
One app for EPUB, CHM, and Kindle: no format juggling
- Reading EPUB, CHM and Kindle files in one place
- Rescuing documents with garbled text via encoding controls
- Extracting all images from a book to a folder
- Finding content with highlighted page search and full-text search
- Basic file information at a glance
Encoding rescue: fix garbled text with a menu pick
- Interface and documentation are available in English and Simplified Chinese
- Requires macOS 10.13 or later; runs on Intel and Apple Silicon
From unreadable CHM to clean layout: a repair session
An edited volume of short stories arrives as a CHM file. The filenames are in Chinese; the chapter headings, on first open, are unreadable. The first step is the encoding menu: a short list of candidates, each tried in turn until the characters resolve into proper paragraphs. It is not automatic, but it takes under a minute. Once the text is legible, the sidebar is collapsed and the window resized to a single narrow column. The book is seven hundred pages; page search finds a remembered quotation in seconds, with every match underlined in pale yellow. The forward-back reading history becomes useful here: after jumping to a search result, one tap of the back arrow returns to the story that was interrupted. By the end of the session, three diagrams have been extracted to a folder on the desktop, and two passages have been printed. The whole process feels like tidying a desk: small manual adjustments that yield a calm, usable result.
A focused reading pane that feeds calibre and other tools
OmniReader Pro is not a library manager: it does not compete with calibre or attempt to sync across devices. It works best as a focused reading pane that feeds into other tools. A typical workflow might involve calibre for cataloguing and conversion, then OmniReader Pro for the actual reading—especially when a file misbehaves in a more polished reader. Extracted images land in a Finder folder, ready for Preview or an image editor. Printed pages pass through the standard macOS print sheet, so any printer or PDF workflow that works elsewhere on the Mac works here. The app respects the system dark mode and scroll direction without configuration. For users who keep a notes app open alongside, copying a passage is standard text selection; there is no annotation layer, which keeps the file untouched and the reading experience closer to paper.
A specific reader: the technical translator
Consider a translator working with a CHM reference manual for a piece of industrial equipment. The original manual is in Simplified Chinese; the translation target is English. The file is large, densely illustrated, and poorly encoded. Calibre refuses to open it. OmniReader Pro accepts it, and the encoding menu resolves the text in one attempt. The translator keeps two windows open: the CHM in OmniReader Pro and a blank document in a text editor. Full-text search locates every instance of a technical term across the entire manual; each match is highlighted, so the translator can scroll through the surrounding context without losing the search position. When a wiring diagram is needed for the translated document, the image extraction command pulls all figures into a folder at once. The translator renames the relevant file and drops it into the layout. No batch export, no conversion step: just reading, searching, and the occasional image pull. The session ends with a printed section of the manual, marked up with a pen, lying next to the keyboard.
Small conveniences worth noting
A few details are easy to overlook. The image extraction command does not offer a dialog: it simply places a folder next to the original file, named after the book. The reading history buttons work across sessions; close a file, reopen it later, and the back arrow still remembers where you were before the last search jump. The sidebar collapse is a single click on a thin divider, and the reading pane expands to fill the window without a distracting animation. Zooming in on a page does not reflow the text, which is a limitation for EPUB files but a genuine advantage for CHM and fixed-layout documents where preserving the original arrangement matters. The file-information panel is sparse and fast: title, format, page count, and file size, with nothing else to scroll past. For users who read across multiple formats and occasionally need a quick way past encoding problems, omnireader pro mac settles into a quiet, unshowy role: it opens the files that other readers refuse, and then it steps back and lets you read.
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