Every feature serves
the manuscript
Étincel is not a text editor. It's a book production system—built from the ground up for non-fiction authors who take their work seriously.
The Pipeline
The four-stage pipeline
Each stage builds on the last. Each has its own quality gate. Nothing moves forward until it's right.
Ignite
Idea to Structure
A Socratic interview extracts your core thesis, target reader, and unique authority. The result is a Concept Brief: a 2–3 page document that mirrors what a publishing editor would want to see.
- ✓Conversational interview, not a form
- ✓Core thesis statement in one sentence
- ✓Target audience profile
- ✓Competitive landscape analysis
- ✓Concept Brief document you own and keep
Architect
Structure to Skeleton
The validated Concept Brief becomes a full chapter map: titles, section breakdowns, argument flows, word count targets, and narrative arc analysis.
- ✓Chapter-by-chapter blueprint
- ✓Section-level argument structure
- ✓Narrative arc recommendations
- ✓Identified research gaps
- ✓Drag-and-drop interactive outline editor
Voiceprint
Voice Calibration
Upload your writing samples: blog posts, articles, speeches. Étincel analyzes 40+ style dimensions and creates a Voice Profile that locks in your voice before a single draft word is generated.
- ✓40+ voice dimension analysis
- ✓Sentence rhythm, vocabulary, rhetorical patterns
- ✓Human-readable Voice Profile document
- ✓Calibration loop with author approval
- ✓Voice consistency scoring throughout draft
Draft
Full Generation
Section-by-section generation with full context awareness. The Continuity Engine tracks every argument, term, and cross-reference. You approve every word before it joins the manuscript.
- ✓Section-by-section with quality gates
- ✓Continuity Engine running throughout
- ✓Research integration from uploaded assets
- ✓Inline editing controls in the editor
- ✓Author approval required at every stage
Voice Profile
Voice calibration, not voice replacement
Most tools generate in a generic voice. Étincel captures yours. We analyze over 40 dimensions, from sentence rhythm and vocabulary range to rhetorical patterns and personality markers, then lock in a Voice Profile before generating a single word of your manuscript.
Sentence Architecture
Rhythm, length distribution, clause depth
Vocabulary Profile
Word choice, formality, domain terminology
Rhetorical Patterns
Argument construction, evidence usage, transitions
Personality Markers
Directness, humor frequency, use of anecdote
Structural Preferences
Paragraph length, pacing, use of lists
Editor Pass
Editorial feedback, not editorial rewriting
Most editors smooth your prose. The Editor Pass does the opposite. It names where the writing is protecting itself — where you hedged, reassured, over-structured, or reached for a clean landing when a harder one was available — and tells you what each choice costs. It does not rewrite. It makes the problem visible so you decide what to do.
Throat-clears
Sentences that announce a paragraph instead of writing one
Mic-drop endings
Section closes that resolve too cleanly when stopping earlier would land harder
Symmetrical arguments
Three clean parallel steps, the 'not X, but Y' tell, uniform list shapes
Too-clean case studies
Figures who make no bad calls and arrive at the insight exactly when needed
Missing wrong turns
Theses that assemble without the author ever admitting they changed their mind
Continuity Engine
60,000 words, one consistent argument
Long manuscripts accumulate contradictions. The Continuity Engine tracks every term, argument, citation, and cross-reference across the full manuscript, flagging inconsistencies the moment they appear, not after the book is done.
What the engine tracks
- Terminology and definitions
- Arguments made and evidence cited
- Cross-chapter references
- Tone consistency over the full document
- Fact claims that need verification
Research
Your sources, woven in
Upload PDFs, paste URLs, or add text snippets. Étincel extracts key claims, statistics, and quotes, organizing them by relevance to your skeleton sections. During generation, research is integrated naturally with proper attribution.
Upload
PDFs, URLs, text snippets. Any source format accepted.
Extract
Key claims, statistics, and quotes organized by section relevance
Integrate
Research woven naturally into generation with proper attribution
Export
Ready for wherever you're going
From traditional publishing to self-publishing, every format you need is included.
DOCX
Publisher-ready with proper styles, headers, and page numbering
Formatted proof copy for review and sharing
EPUB
For self-publishing and e-reader distribution
Markdown
For authors who prefer their own toolchain
Proposal Package
Concept brief + sample chapters + outline formatted for publisher submissions