Cambia la Copertina del Tuo EPUB Istantaneamente
Carica il tuo file EPUB e una nuova immagine di copertina, combinale nel tuo browser e scarica il risultato. Funziona su iPhone, Android, Kindle, Kobo e tutti gli e-reader.
Cambia Copertina
Rilascia il tuo EPUB e una nuova immagine di copertina qui sotto. Li combineremo per te.
FUNZIONA OVUNQUE
Cambia Copertina EPUB su Qualsiasi Dispositivo
Non importa quale e-reader o telefono usi, Cambia Copertina EPUB funziona direttamente nel tuo browser — nessun software aggiuntivo richiesto.
iPhone & iPad
Cambia la copertina EPUB su iPhone o iPad usando Safari, Chrome o qualsiasi browser mobile. Il nuovo EPUB viene scaricato direttamente nella tua app File, pronto per essere importato in Apple Books.
Android
Cambia la copertina EPUB su qualsiasi telefono o tablet Android. Funziona con Moon+ Reader, Lithium e altre app di lettura Android.
Kindle, Kobo & Altri
Cambia la copertina EPUB per Kindle, Kobo, Nook o qualsiasi e-reader. Cambia la copertina poi trasferisci via USB o email.
COME FUNZIONA
Tre Passi per una Nuova Copertina
Carica
Trascina e rilascia il tuo file EPUB e la nuova immagine di copertina nei due slot. Tutto rimane nel tuo browser.
Cambia
Clicca il pulsante cambia e guarda i tuoi file combinarsi. L'elaborazione richiede solo pochi secondi.
Scarica
Il tuo nuovo EPUB con la copertina sostituita è pronto. Scarica istantaneamente — nessuna registrazione, nessuna filigrana, nessun limite.
PERCHÉ SCEGLIERE
Why EPUB Cover Changer Is Different
Unlike generic online converters, EPUB Cover Changer is built specifically for EPUB cover replacement with a focus on privacy, performance, and format fidelity.
True Client-Side Processing
Every file operation — ZIP extraction, image replacement, manifest updates, and repackaging — runs inside your browser using JavaScript and Web APIs. No server ever sees your EPUB or cover image. This is not just a privacy claim; it is an architectural guarantee verified by inspecting the browser's Network tab: zero upload requests.
Full EPUB Format Preservation
EPUB Cover Changer replaces only the cover image and updates the OPF manifest and metadata accordingly. All other content — chapter files, CSS stylesheets, embedded fonts, navigation, and NCX/NAV documents — remains untouched. The tool handles EPUB2, EPUB3, and Kobo Kepub formats with proper MIME type detection and container.xml parsing.
Adaptive Performance
The tool dynamically adjusts file size limits based on your device's memory (navigator.deviceMemory API) and CPU cores. Low-end phones get 50 MB EPUB / 10 MB image limits; high-end devices handle up to 500 MB / 100 MB. This prevents browser crashes while maximizing capability on powerful hardware.
Broad Format Support
Accepts 9 image formats including HEIC (iPhone photos) and WebP. The cover image is automatically converted to the optimal format for EPUB compatibility. EPUB inputs support standard .epub, Kobo .kepub.epub, and any valid EPUB2/EPUB3 container — no pre-conversion needed.
SOTTO IL COFANO
How EPUB Cover Replacement Works
Understanding the technical process helps you trust the tool and troubleshoot any issues. Here is exactly what happens when you click the Change Cover button.
EPUB Extraction
The EPUB file is loaded into memory as an ArrayBuffer and parsed using JSZip. An EPUB is essentially a ZIP archive containing XHTML, CSS, images, and metadata files. The tool reads the META-INF/container.xml to locate the OPF package document, which is the manifest for the entire book.
Cover Image Identification
The tool scans the OPF manifest for the cover image reference. In EPUB2, this is the item with id="cover-image" or referenced by the <meta name="cover"> element. In EPUB3, the properties="cover-image" attribute identifies the cover. Multiple detection strategies ensure compatibility with non-standard EPUBs.
Image Processing & Replacement
Your new cover image is decoded, normalized to a standard format, and written into the EPUB archive at the correct path. The tool preserves the original image filename and directory structure to maintain manifest integrity. HEIC images are converted to JPEG or PNG since EPUB readers do not support HEIC natively.
Manifest & Metadata Update
The OPF manifest is updated to reflect the new cover image's MIME type and file size. If the EPUB includes a cover XHTML page, its <img> tag dimensions are updated. The EPUB metadata (<meta> and <dc:date>) receives a modification timestamp so e-readers recognize the updated file.
Repackaging & Download
The modified archive is compressed back into a valid EPUB using JSZip's DEFLATE compression with the correct mimetype entry (stored uncompressed as required by the EPUB specification). The resulting Blob is offered as a download with the original filename or a new one if you choose to rename.
FAQ
Domande Frequenti
Quali formati sono supportati?
C'è un limite alla dimensione del file?
I miei file vengono caricati da qualche parte?
Quali dimensioni di immagine dovrei usare?
Come cambiare la copertina EPUB su iPhone?
Posso cambiare la copertina EPUB su Kindle?
Come cambiare la copertina EPUB senza Calibre?
Qual è il miglior cambi copertina EPUB gratis?
Pronto a Cambiare la Copertina del Tuo EPUB?
Gratis. Nessuna registrazione. Funziona su iPhone, Android, Kindle e tutti gli e-reader.
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