Epublys | Online EPUB tools for ebook lovers

# Epublys > Free online EPUB tools. Merge, split, compress, convert, edit, and validate EPUB ebook files — no install, no sign-up. Epublys is a web application at https://epublys.com that provides free browser-based tools for working with EPUB and PDF ebook files. All processing happens in-memory on Cloudflare Workers — no files are stored. ## Tools - [Merge EPUB Files Online](https://epublys.com/merge_epub): Combine multiple EPUB ebooks into one file. Free online EPUB merger - no sign up, no install. Drag, drop, merge. Works on any device. - [Split EPUB by Chapters](https://epublys.com/split_epub): Split any EPUB file into individual chapters. Extract specific sections from your ebook. Free, fast, and works in your browser. - [Compress EPUB Files](https://epublys.com/compress_epub): Reduce EPUB file size by up to 70% while preserving quality. Compress images, optimize fonts, minimize your ebook. Free online tool. - [Convert EPUB to PDF](https://epublys.com/epub_to_pdf): Convert EPUB ebooks to PDF format instantly. Free online EPUB to PDF converter with no watermarks, no limits. Preserves formatting. - [Edit EPUB Metadata](https://epublys.com/edit_epub_metadata): Edit EPUB metadata online. Change title, author, description, language, publisher. Free ebook metadata editor - no software needed. - [Validate EPUB Files](https://epublys.com/validate_epub): Check your EPUB for errors, compatibility issues, and compliance. Free EPUB validator supporting EPUB 2 and EPUB 3 standards. - [Convert PDF to EPUB](https://epublys.com/pdf_to_epub): Convert PDF files to EPUB ebook format online. Free PDF to EPUB converter — no sign up, no install. Upload your PDF and download a reflowable EPUB. - [Read EPUB & PDF Online](https://epublys.com/read_ebook): Read EPUB and PDF files directly in your browser. Free online ebook reader with table of contents, themes, font controls, and keyboard navigation. No upload, no sign up — files never leave your device. - [AI Book Cover Gen

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