Colophon

Colophon repairs EPUB, AZW3, MOBI and FB2 ebook files entirely in the browser: it explains what's inside a file, fixes wrong titles/authors/series metadata, repairs the nine most common reasons a cover won't show on Kindle, and corrects encoding damage and stray characters in the text, with every change previewed and opt-in before it's applied. No account is needed and uploaded files are deleted after an hour; it's free for 15 books a day, with a one-time $5 pack for 50 more.