Colophon
Fix EPUB titles, covers and broken text online
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Colophon repairs ebook files in your browser. See what's inside an EPUB, fix wrong titles, authors and series, learn why a cover won't show on your Kindle, and clean up text a bad conversion broke. You approve every change. No account; files gone in an hour.
PH · launched Sep 20, 2026 · 4 upvotes (top 8%) · 0 views
Niche: ebook and reading apps · 190 launches, 18 in the last 7 days ▼ -33% · Explore this niche →
Category and tags
- Media & entertainment
- Workflow automation
- Prosumer
- Not AI
- Commercial product
- eBook Reader
- User Experience
- Bots
Visit website ↗ Source listing ↗
More like this: all 190 launches in ebook and reading apps →
Could you build this?
Yes EPUBs are zip archives containing XHTML and XML metadata, which can be unpacked, edited, and repackaged entirely client-side using JavaScript libraries.
Competitors
Other products that read as similar to this one : 292 launches clear the similarity bar, closest 8 shown.
Attention rank: #14 of 293 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 258 days after the earliest competitor.
- EPUB Inspector · ph · 2026-10-20 · 2 upvotes · similarity 0.59
- Convert2EPUB · ph · 2026-10-16 · 1 upvotes · similarity 0.51
- BookFixer Studio · ph · 2026-10-01 · 1 upvotes · similarity 0.51
- FolioBind: EPUB Studio · ph · 2026-10-24 · 2 upvotes · similarity 0.50
- Reflow · ph · 2026-09-16 · 2 upvotes · similarity 0.50
- Free EPUB Tools Online · ph · 2026-09-11 · 1 upvotes · similarity 0.49
- EPUBtoPDF · ph · 2026-11-10 · 1 upvotes · similarity 0.48
- EPUB Cover & Series Editor · ph · 2026-10-06 · 2 upvotes · similarity 0.48
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.