Title: CompressPrivacy – Local Image Compression to WebP & AVIF
Author: Ankit
Published: <strong>2026 年 8 月 18 日</strong>
Last modified: 2026 年 8 月 18 日

---

搜索插件

![](https://ps.w.org/compressprivacy-private-image-compression/assets/banner-772x250.
png?rev=3654020)

![](https://ps.w.org/compressprivacy-private-image-compression/assets/icon-256x256.
png?rev=3652839)

# CompressPrivacy – Local Image Compression to WebP & AVIF

 作者：[Ankit](https://profiles.wordpress.org/code7x/)

[下载](https://downloads.wordpress.org/plugin/compressprivacy-private-image-compression.1.0.0.zip)

 * [详情](https://cn.wordpress.org/plugins/compressprivacy-private-image-compression/#description)
 * [评价](https://cn.wordpress.org/plugins/compressprivacy-private-image-compression/#reviews)
 *  [安装](https://cn.wordpress.org/plugins/compressprivacy-private-image-compression/#installation)
 * [开发进展](https://cn.wordpress.org/plugins/compressprivacy-private-image-compression/#developers)

 [支持](https://wordpress.org/support/plugin/compressprivacy-private-image-compression/)

## 描述

CompressPrivacy Private Image Compression compresses images locally to WebP or AVIF
entirely in your browser, using your own CPU — no server-side processing, no external
API, no usage limit.

All compression happens on one dedicated screen: **Media  Bulk Optimizer**. Drop
or select any number of images there, adjust the quality slider if you like, and
each one is compressed and uploaded straight into the Media Library, with live per-
file and total percentage-saved shown as it goes.

Uploading anywhere else in WordPress — the Media Library’s own upload tab, a product
image, a featured image, a gallery — is untouched by this plugin by design. The 
workflow is: compress what you need on the Bulk Optimizer page first, then select
the already-compressed file from the Media Library wherever you actually need it.

#### How it works

 1. On the Bulk Optimizer page, each selected image is drawn to an in-memory `<canvas
    >` and re-encoded via `canvas.toBlob()` to WebP, or AVIF where the browser supports
    it.
 2. The compressed file is uploaded to a dedicated endpoint that inserts it into the
    Media Library the standard WordPress way (`wp_handle_upload()` + `wp_insert_attachment()`).
 3. If compression fails, isn’t smaller than the original, or the browser doesn’t support
    the required APIs, the original file uploads unmodified — nothing is ever blocked.
 4. Up to a few files compress and upload concurrently, so large batches don’t process
    one at a time.

#### Notes

 * Animated GIFs are skipped by default (canvas conversion would drop the animation);
   this is configurable.
 * AVIF encoding support varies by browser; the plugin detects support automatically
   and falls back to WebP.
 * Already-optimized formats (WebP, AVIF, SVG) are left untouched.

## 安装

 1. Upload the `compressprivacy-private-image-compression` folder to `/wp-content/plugins/`.
 2. Activate the plugin through the ‘Plugins’ menu in WordPress.
 3. Go to Media  Bulk Optimizer to compress and upload images. Go to Media  Image Optimizer
    to set defaults (format, quality, max dimensions, batch size).

## 常见问题

### Does this compress images automatically when I upload them normally?

No. Compression only happens on the Media  Bulk Optimizer page. Compress what you
need there, then select the compressed file from the Media Library wherever you 
actually want to use it.

### Does this replace or resize existing images already in my library?

No. It only affects images you run through the Bulk Optimizer page.

### Does it need an API key or account?

No. All processing happens locally in the browser using standard Canvas APIs.

### What if a browser doesn’t support the Canvas/Blob APIs?

The plugin detects this and uploads the original file unmodified — nothing is blocked.

## 评价

此插件暂无评价。

## 贡献者及开发者

「CompressPrivacy – Local Image Compression to WebP & AVIF」是开源软件。 以下人员
对此插件做出了贡献。

贡献者

 *   [ Ankit ](https://profiles.wordpress.org/code7x/)

[帮助将「CompressPrivacy – Local Image Compression to WebP & AVIF」翻译成简体中文。](https://translate.wordpress.org/projects/wp-plugins/compressprivacy-private-image-compression)

### 对开发感兴趣吗?

您可以[浏览代码](https://plugins.trac.wordpress.org/browser/compressprivacy-private-image-compression/)，
查看[SVN仓库](https://plugins.svn.wordpress.org/compressprivacy-private-image-compression/)，
或通过[RSS](https://plugins.trac.wordpress.org/log/compressprivacy-private-image-compression/?limit=100&mode=stop_on_copy&format=rss)
订阅[开发日志](https://plugins.trac.wordpress.org/log/compressprivacy-private-image-compression/)。

## 更新日志

#### 1.0.0

 * Initial public release of CompressPrivacy Private Image Compression.

## 额外信息

 *  版本 **1.0.0**
 *  最后更新：**2 月前**
 *  活跃安装数量 **不到10**
 *  WordPress 版本 ** 6.8 或更高版本 **
 *  已测试的最高版本为 **7.0.6**
 *  PHP 版本 ** 7.4 或更高版本 **
 *  语言
 * [English (US)](https://wordpress.org/plugins/compressprivacy-private-image-compression/)
 * 标签
 * [AVIF](https://cn.wordpress.org/plugins/tags/avif/)[client side](https://cn.wordpress.org/plugins/tags/client-side/)
   [image optimization](https://cn.wordpress.org/plugins/tags/image-optimization/)
   [media library](https://cn.wordpress.org/plugins/tags/media-library/)[webp](https://cn.wordpress.org/plugins/tags/webp/)
 *  [高级视图](https://cn.wordpress.org/plugins/compressprivacy-private-image-compression/advanced/)

## 评级

尚未提交反馈。

[您的评价](https://wordpress.org/support/plugin/compressprivacy-private-image-compression/reviews/#new-post)

[查看全部评论](https://wordpress.org/support/plugin/compressprivacy-private-image-compression/reviews/)

## 贡献者

 *   [ Ankit ](https://profiles.wordpress.org/code7x/)

## 支持

有话要说吗？是否需要帮助？

 [查看支持论坛](https://wordpress.org/support/plugin/compressprivacy-private-image-compression/)