在线转换任何文件格式 - 免费且安全

上传文件开始转换，支持本地文件上传或远程链接导入

${shortenFileName(item.file_name)} ${formatBytes(item.file_size)}

输出格式：

已上传 ${items.length} 个文件

Convert

如何将Djvu文件转换为HEIC？

点击「选择DJVU文件」按钮上传您的源文件
点击「立即转换」启动智能转码流程
状态显示「转换完成」后，点击「下载HEIC」获取文件

全场景DJVU to HEIC格式兼容转换

本工具支持将多种类型的 Djvu 转换为 HEIC。可将 PDF, JPEG, PNG, TIFF, GIF, BMP, ICO, WEBP, SVG, EPS 转换为 HEIC。

行业领先的Djvu格式转换专家

智能优化算法保障Djvu转换质量，支持批量处理与自定义分辨率/码率/帧率设置

零成本·军工级安全

基于浏览器即点即用，采用金融级256位SSL加密传输，所有文件72分钟后自动焚毁

What is a DJVU file?

DJVU (DjVu) is a file format designed for efficiently compressing documents and images, particularly suitable for scanned documents and pictures. Compared to traditional formats like PDF, DJVU offers higher compression rates and faster loading speeds while maintaining high-quality image display. It is widely used in e-books, academic literature, and archive management. DJVU files support multi-page documents and can embed text layers and metadata, facilitating search and management. Recommended viewers include [DjView](https://www.djvu.org/djview/), which provides powerful browsing and editing features. Additionally, [WinDjView](https://windjview.sourceforge.io/) is an excellent open-source viewer for Windows users. Developed by AT&T Labs, the DJVU format aims to provide an efficient and compact way to store documents, suitable for applications requiring quick access and high-fidelity image quality.

How to open and edit a DJVU file?

To view and edit DJVU files, you can use the following tools: - Viewers: [DjView](https://www.djvu.org/djview/) is the officially recommended tool, providing full DJVU file functionality and the best viewing experience. - Free Alternatives: [WinDjView](https://windjview.sourceforge.io/) is an open-source DJVU viewer, suitable for Windows users. - Conversion Tools: [ImageMagick](https://imagemagick.org/) (cross-platform), which can convert DJVU files to other common image or document formats such as PDF or JPEG for use in various applications. Regardless of the tool you choose, the process is straightforward: simply double-click the file or right-click and select 'Open'. If you need to convert a DJVU file to another format, many tools provide powerful conversion features, such as using ImageMagick for format conversion. Note that some advanced features (such as complex page layout adjustments) may not be fully supported in non-official tools. For DJVU files containing sensitive information, ensure you use encryption features to protect the file. Steps are as follows: 1. Use a tool that supports encryption (such as a dedicated document editor). 2. Open the file and select 'File' > 'Save As' > 'Save as PDF or JPEG'. 3. In the export settings, choose 'Security', set a password, and select encryption options.

https://en.wikipedia.org/wiki/DjVu

https://www.djvu.org/

https://windjview.sourceforge.io/

https://imagemagick.org/script/formats.php

What is an HEIC file?

HEIC (High Efficiency Image Container) is a file format based on HEIF (High Efficiency Image Format) using HEVC (H.265) compression. It allows storing high-quality images while reducing file size by approximately 50% compared to JPEG. HEIC supports 16-bit color depth, transparency, HDR, and multiple image storage (such as Live Photos). Apple devices (iOS 11+ and macOS High Sierra+) use HEIC as the default format, making it popular in mobile photography, digital imaging, and cloud storage.

How to open and edit an HEIC file?

HEIC files can be opened and edited using various tools. Recommended software and methods include: - **Native Support**: - [iOS Photos](https://support.apple.com/en-us/HT207022): View and edit HEIC files directly on iPhones and iPads. - [macOS Preview](https://support.apple.com/en-us/HT208967): Open HEIC files natively in Preview and Photos on macOS. - Windows 10/11 (requires HEIF extension): Microsoft provides official HEIF and HEVC plugins (some may require a purchase). - **Professional Editing Tools**: - [Adobe Photoshop 2020+](https://helpx.adobe.com/photoshop/using/file-formats.html#HEIF_HEIC): Supports HEIC editing and conversion. - [Affinity Photo](https://affinity.serif.com/): Allows HEIC import and editing, suitable for professional designers. - **Open-Source & Free Tools**: - [XnView MP](https://www.xnview.com/): Multi-platform support for viewing and converting HEIC files. - [GIMP](https://www.gimp.org/) (with plugin): Supports basic HEIC editing. - **Online Conversion**: - Use [CloudConvert](https://www.cloudconvert.com/) or [Convertio](https://convertio.co/) to convert HEIC to JPEG, PNG, or other common formats. On Windows, additional HEVC video extensions may be required to decode HEVC-compressed images properly.

https://nokiatech.github.io/heif/technical.html

https://developer.apple.com/documentation/heif

https://imagemagick.org/script/heic.php