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Real-world conversion quality — verified
We ran Raise a Genius by Laszlo Polgar through our converter and measured the result page by page. Here's what the numbers look like.
Source: Raise a Genius!, Laszlo Polgar (1989) — 110-page pedagogical text with complex tables
Quality metrics — every page measured
100%
Text fidelity (avg similarity)
WCAG
2.2 AA
Accessibility output
PDF vs EPUB3 — what changes
Original PDF
- Fixed page size — no reflow
- Small text on phone screens
- Tables as images or broken layout
- No semantic heading structure
- Fails WCAG reflow requirement
- Not readable on Kindle / Kobo
After conversion — EPUB3
- Reflowable text — adapts to any screen
- Readable at any font size
- Elo ratings table as real HTML
<table>
- Heading hierarchy preserved (H1–H3)
- EPUB Accessibility 1.1 + WCAG 2.2 AA
- Works on Kindle, Kobo, Apple Books
The hard part: that Elo ratings table
Many converters turn complex tables into PNG images — readable only at original size, not selectable, not screen-reader accessible. Our converter detected the Elo ratings table structure in Raise a Genius and rendered it as a proper HTML <table> element.
That means: the data is selectable, searchable, screen-reader navigable, and scales correctly at any font size. No image fallback.
How we verify quality
Every conversion runs through our built-in QC pipeline:
- ✓ Page-by-page text extraction and similarity comparison
- ✓ Positioned text presence check (no silent empty pages)
- ✓ Page size fidelity check (PDF dimensions preserved)
- ✓ Structure detection: headings, tables, lists
- ✓ Round-trip validation: EPUB rendered back to PDF, re-compared
The Raise a Genius conversion scored 1.000 average text similarity — perfect fidelity across all 110 pages, with native PDF text extraction (zero OCR fallbacks).