| What it does | Browser-based EPUB workspace for viewing, editing, and extracting DRM-free ebook files locally
| Free private studios and tools for PDFs, documents, spreadsheets, data, images, slides, study, citations, maths and code, all running in your browser
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Free
| Free
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| Pricing | Not given
| All studios and tools are free with no watermarks or daily limits. A free account adds sync between devices and 50 MB of cloud files, with no charge.
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| Key features | - EPUB viewer for reading chapters and inspecting publication structure
- Metadata editor to modify title, authors, language, publisher, description, and subjects
- Cover editor to replace publication artwork
- Extract chapters to Markdown format with metadata and image references
- Extract chapters to plain UTF-8 text
- Browser-local file processing with no server upload
- Blocks external resources and publication scripts by default
- Supports EPUB 2 and EPUB 3 formats
| - PDF annotation, highlighting, text and image insertion, signing, redaction, merging, splitting, reordering, compressing, form filling, password protection and OCR
- Word document creation with real DOCX file format export
- Excel spreadsheet editing with working formulas
- CSV data cleaning, reshaping and charting
- Flashcard study with FSRS memory model and eight study modes
- Citation formatting in APA, MLA, Chicago, Harvard, IEEE and 13 more styles
- Mathematical problem solving with step-by-step answers
- Photo editing with color grading, compression and format conversion
- Offline installation as browser app with sync on reconnect
- Support for 107 languages and right-to-left scripts
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| What makes it different | - Local browser processing keeps your ebook file private and offline
- Non-destructive editing preserves original files while creating new versions
- Focused single-task tools instead of complex full-featured desktop software
- Clear compatibility limits and honest support boundaries documented
| - All processing happens in your browser with no file uploads required
- No account needed to use any studio or tool
- Completely free with no watermarks, trials, daily limits or ads
- Works offline as an installable browser app
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 3 ● no change since last check | 9 ● no change since last check |
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| Trust Flow (Majestic) | 6 | 0 |
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| Citation Flow (Majestic) | 27 | 0 |
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| Referring domains (Majestic) | 31 | 0 |
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EPUB Toolset
Cromagnon