Title: Henkan – WebP & AVIF Converter
Author: saguya
Published: 2026년 3월 23일
Last modified: 2026년 8월 20일
---
플러그인 검색
# Henkan – WebP & AVIF Converter
작성자: [saguya](https://profiles.wordpress.org/saguya/)
[다운로드](https://downloads.wordpress.org/plugin/henkan-webp-avif-converter.2.4.0.zip)
* [세부사항](https://ko.wordpress.org/plugins/henkan-webp-avif-converter/#description)
* [평가](https://ko.wordpress.org/plugins/henkan-webp-avif-converter/#reviews)
* [설치](https://ko.wordpress.org/plugins/henkan-webp-avif-converter/#installation)
* [개발](https://ko.wordpress.org/plugins/henkan-webp-avif-converter/#developers)
[지원](https://wordpress.org/support/plugin/henkan-webp-avif-converter/)
## 설명
Welcome to **Henkan** (Japanese for “conversion”) — your lightweight, high-performance
solution for next-generation image optimization in WordPress!
Slow loading times and heavy images are a thing of the past. Henkan seamlessly integrates
into your WordPress dashboard, silently converting your standard JPEGs and PNGs
into highly optimized **WebP** or **AVIF** files. Boost your Core Web Vitals, improve
your SEO rankings, and save massive amounts of server bandwidth without sacrificing
an ounce of image quality.
### ✨ Why choose Henkan?
Most image optimizers rely on slow PHP processing or expensive cloud APIs with monthly
limits. Henkan is built differently: It prioritizes **native OS binaries** (`cwebp`,`
avifenc`) to process images blazingly fast directly on your own server, completely
free and without any restrictions.
### 🚀 Powerful Features
* **Next-Gen Formats:** Instantly convert images to WebP and AVIF formats.
* **Zero-Config Auto-Conversion:** New images are optimized silently in the background
the moment you upload them.
* **1-Click Bulk Optimization:** Got a massive existing media library? Process
thousands of images with a single click in our beautiful, modern dashboard.
* **Smart Fallbacks:** Uses ultra-fast `exec()` binaries when available, falling
back to GD or ImageMagick seamlessly if needed.
* **Cache Auto-Clear:** Fully compatible with WP Rocket, W3 Total Cache, Autoptimize,
and LiteSpeed Cache. Conversions automatically trigger a cache purge.
* **Frontend Delivery:** Automatically serves the optimized images to compatible
browsers using modern HTML `` tags or Nginx/Apache rewrites.
* **WP-CLI Power:** Built-in commands (`wp henkan convert`) for sysadmins to process
massive libraries directly from the terminal without PHP timeouts.
* **Global Ready:** 100% translation-ready. Shipped with English, German (`de_DE`),
and Japanese (`ja`) out of the box.
### 🛠️ System Requirements
To unleash the full speed of Henkan, we recommend:
* **WordPress:** 6.9 or higher***
PHP:** 8.4 or higher * **For WebP:** `cwebp` installed on the server (recommended)
OR PHP `GD` extension with WebP support. * **For AVIF:** `avifenc` or `ImageMagick`(
magick/convert) installed OR PHP `GD` extension with AVIF support.
## 스크린샷
[⌊The beautiful, modern Henkan Dashboard showing your optimization stats.⌉⌊The beautiful,
modern Henkan Dashboard showing your optimization stats.⌉[
The beautiful, modern Henkan Dashboard showing your optimization stats.
[⌊Bulk conversion in progress with a sleek progress circle.⌉⌊Bulk conversion in
progress with a sleek progress circle.⌉[
Bulk conversion in progress with a sleek progress circle.
[⌊Seamless integration into the WordPress Media Library.⌉⌊Seamless integration into
the WordPress Media Library.⌉[
Seamless integration into the WordPress Media Library.
[[
[[
[[
## 설치
1. Download the latest plugin zip from the repository.
2. Go to your WordPress Dashboard: **Plugins > Add New > Upload Plugin**.
3. Upload the zip file and click **Install Now**.
4. Click **Activate Plugin**.
5. Navigate to **Settings > Henkan** in your dashboard.
6. Choose your preferred format (WebP or AVIF), set the quality (we recommend 82),
and click **Start Scan** to optimize your existing library!
## FAQ
### Does it delete my original images?
By default, no! Henkan keeps your original JPEGs and PNGs safely stored. You can
easily toggle this behavior in the settings if you want to aggressively save disk
space.
**Note: If you choose to delete the originals, the newly generated optimized
file (e.g., WebP or AVIF) will officially replace the old JPEG/PNG as the primary
attachment in your WordPress database.**
### Do I need to pay for an API or subscription?
Absolutely not. Henkan processes everything locally on your own server. No cloud
limits, no monthly fees, completely free and open-source.
### How do I use the WP-CLI commands?
For large media libraries, using the terminal is highly recommended.
* Scan and
convert all missing images: `wp henkan convert` * Force convert everything: `wp
henkan convert --force`
## 후기
### [Works as expected](https://wordpress.org/support/topic/works-as-expected-955/)
[envoyr](https://profiles.wordpress.org/envoyr/) 2026년 5월 19일 답글 2개
Works as expected, easy to setup 😀
[ 모든 1 평가 읽기 ](https://wordpress.org/support/plugin/henkan-webp-avif-converter/reviews/)
## 기여자 & 개발자
“Henkan – WebP & AVIF Converter”(은)는 오픈 소스 소프트웨어입니다. 다음의 사람들이
이 플러그인에 기여하였습니다.
기여자
* [ saguya ](https://profiles.wordpress.org/saguya/)
“Henkan – WebP & AVIF Converter”(이)가 1 개 언어로 번역되었습니다. 기여해 주셔서
[번역자](https://translate.wordpress.org/projects/wp-plugins/henkan-webp-avif-converter/contributors)
님께 감사드립니다.
[자국어로 “Henkan – WebP & AVIF Converter”(을)를 번역하세요.](https://translate.wordpress.org/projects/wp-plugins/henkan-webp-avif-converter)
### 개발에 관심이 있으십니까?
[코드 탐색하기](https://plugins.trac.wordpress.org/browser/henkan-webp-avif-converter/)
는, [SVN 저장소](https://plugins.svn.wordpress.org/henkan-webp-avif-converter/)를
확인하시거나, [개발 기록](https://plugins.trac.wordpress.org/log/henkan-webp-avif-converter/)
을 [RSS](https://plugins.trac.wordpress.org/log/henkan-webp-avif-converter/?limit=100&mode=stop_on_copy&format=rss)
로 구독하세요.
## 변경이력
#### 2.4.0
### Security
* **Enhanced image MIME validation:** Added strict server-side image type verification
using `mime_content_type()` with `exif_imagetype()` fallback.
* **Fail-closed image processing:** Files are rejected when no reliable image type
verification method is available.
* **Conversion locking:** Added atomic per-attachment conversion locks to prevent
concurrent conversion of the same image and generated sizes.
* **Stale lock recovery:** Conversion locks that remain active after an unexpected
process termination can be safely recovered.
* **Lock ownership validation:** Processes can only release locks that they own.
* **Integrity check locking:** Prevented multiple integrity checks from running
concurrently.
### Bulk Optimization
* **Cursor-based media scanning:** Replaced unbounded media-library queries with
bounded cursor/keyset pagination.
* **Reduced memory usage:** Large media libraries are no longer loaded into PHP
memory in a single request.
* **Improved AJAX bulk processing:** Bulk scans now process images in controlled
batches and return a continuation cursor.
* **Improved “Only missing” detection:** Conversion status is now verified against
the actual files on disk instead of relying solely on database records.
* **Multi-format verification:** Missing WebP, AVIF, or JPEG XL files are detected
independently when multiple output formats are enabled.
### Background Processing
* **Real background queue worker:** Added a bounded WP-Cron worker for background
bulk optimization.
* **Queue locking:** Prevented multiple background workers from processing the
same queue simultaneously.
* **Cursor-based queue:** The background queue stores a lightweight attachment
cursor instead of maintaining a potentially massive list of attachment IDs.
* **Bounded worker execution:** Each worker run processes a limited number of attachments
to reduce PHP execution time and memory pressure.
* **Automatic queue continuation:** Remaining work is automatically scheduled for
subsequent WP-Cron runs.
* **Safe queue completion:** Queue state is persisted and finalized cleanly after
the last batch.
* **Automatic cache cleanup:** Relevant caches are cleared after successful queue
completion when enabled.
### WP-CLI
* **Keyset pagination:** Replaced offset-based pagination with ID-based cursor
pagination.
* **Improved large-library performance:** WP-CLI bulk processing no longer becomes
progressively slower as the attachment offset increases.
* **Bounded processing:** CLI operations now use controlled batch sizes.
### Database & Integrity
* **Chunked integrity checks:** Henkan data is now checked in bounded batches instead
of loading the complete `wp_henkan_data` table into memory.
* **Reduced database memory pressure:** Large Henkan installations can perform
integrity checks without creating oversized PHP result sets.
* **Improved missing-file detection:** Integrity checks can identify missing converted
files more reliably.
### Web Server Delivery
* **Deterministic format priority:** Updated generated Nginx configuration to use
the documented format priority:
WebP > AVIF > JPEG XL.
* **Improved multi-format handling:** Format availability is evaluated independently
rather than treating the presence of one generated format as sufficient.
#### 2.3.3
* **Security:** Added strict server-side MIME-type verification (using `mime_content_type`
and `exif_imagetype`) to the image creation process. This prevents malicious
file uploads disguised as images from reaching the CLI fallback converters, effectively
mitigating the CVE-2026-65640 vulnerability (Imagick/Ghostscript RCE).
* **Changed:** Bumped the “Requires at least” WordPress version to 7.0.4 to align
with core security standards and ensure safe environment execution.
#### 2.3.2
* **Fix Readme
#### 2.3.0
* **New tab: Smart Options. A dedicated “Smart Options” tab has been added to the
plugin dashboard. It groups all optional, advanced features behind individual
toggles that are disabled by default. Existing setups are completely unaffected
unless a feature is explicitly activated.
* **Smart Option: Quality by Image Size. Allows a separate, lower quality value
to be applied to WordPress-generated thumbnail crop sizes (e.g. thumbnail, medium,
medium_large) while the global quality setting continues to apply to full-size
originals. The feature uses wp_get_registered_image_subsizes() to determine whether
a given image size is an actual WordPress crop — custom single-resolution setups
where WordPress thumbnail generation is not used are not affected even if the
toggle is enabled.
* **Smart Option: Integrity Check. Adds a daily WP-Cron job that verifies whether
converted files recorded in the wp_henkan_data table still physically exist on
disk. Any entry whose files are no longer present is removed from the database,
causing the image to be re-queued for conversion on the next bulk scan. The Smart
Options tab displays the date of the last run and the number of missing files
found. Particularly useful after server migrations or accidental file deletions.
* **Smart Option: Max Output Width. Optionally limits the pixel width of converted
output files. If an uploaded image exceeds the configured maximum width, it is
scaled down proportionally before conversion. The original file is never modified—
only the converted WebP/AVIF/JXL output is resized. Aspect ratio is always preserved.
Images already narrower than the configured value are not affected.
* **Conversion Statistics panel. A new read-only statistics panel in the Smart
Options tab shows the total number of converted images and the cumulative disk
space saved. Also introduces the wp henkan stats WP-CLI command for the same
information from the terminal.
* **New WP-CLI command: wp henkan stats. Outputs a summary of total converted images
and space saved directly from the terminal.
#### 2.2.0
* **Tested up to:** WordPress 7.0
* **New:** Full compatibility with WordPress 7.0 architectural changes.
* **New:** High-performance database architecture. Migrated conversion data from`
wp_postmeta` to a dedicated custom table (`wp_henkan_data`). This significantly
speeds up backend load times and reduces database queries for large media libraries.
The migration runs seamlessly and automatically in the background.
* **New:** Asynchronous Background Queue for Bulk Optimization. You can now run
massive conversion tasks safely in the background via WP-Cron without keeping
the browser tab open. This feature can be toggled in the Advanced Settings.
* **New:** Granular Exclusion Rules. You can now exclude specific files, paths,
or naming patterns (e.g., logos, specific folders) from conversion using simple
string matching or Regex.
* **Tweak:** Improved resource management and cleanup routines. The plugin now
automatically purges the associated database rows in the custom table when an
attachment is permanently deleted.
#### 2.1.1
* **Fix:** Added native WordPress Media Library support for AVIF and JXL formats.
* **Fix:** Added an admin grid fallback to display WebP/JPEG thumbnails if the
browser does not support JXL natively.
#### 2.1.0
* **Feature:** Multi-Format Engine! You can now generate WebP, AVIF, and JXL simultaneously
for every uploaded image.
* **Feature:** Added experimental support for JPEG XL (.jxl) via `cjxl` and ImageMagick.
* **UI/UX:** Completely redesigned the Admin Dashboard. All settings, Server Rewrites,
and WP-CLI commands are now unified into a clean, single-card tabbed interface.
* **Engine:** Introduced an intelligent Auto-Fallback system. If native OS binaries(`
avifenc`, `cwebp`) fail or are blocked by your host, Henkan automatically falls
back to PHP GD or ImageMagick.
* **Engine:** Strict format priority (WebP > AVIF > JXL) ensures maximum browser
compatibility for the main WordPress media library files.
* **Core:** Added detailed, transparent error logging directly in the bulk optimization
UI to help identify missing server binaries.
* **Compliance:** Achieved 100% strict compliance with WordPress Coding Standards(
WPCS) and security escaping rules.
#### 2.0.4
* Bumped minimum requirements to PHP 7.4 and WordPress 6.0 for better security
and native binary performance.
* Improved Readme layout and added FAQ section.
#### 2.0.3
* Initial release on the official WordPress.org Plugin Directory.
* Full i18n Overhaul & WP.org Compliance.
* Strict settings sanitization and security patches applied.
## 기초
* 버전 **2.4.0**
* 최근 업데이트: **2개월 전**
* 활성화된 설치 **10+**
* 워드프레스 버전 ** 7.1 또는 그 이상 **
* 다음까지 시험됨: **7.1.3**
* PHP 버전 ** 8.4 또는 그 이상 **
* 언어
* [English (US)](https://wordpress.org/plugins/henkan-webp-avif-converter/) 및
[Russian](https://ru.wordpress.org/plugins/henkan-webp-avif-converter/).
* [자국어로 번역하기](https://translate.wordpress.org/projects/wp-plugins/henkan-webp-avif-converter)
* 태그:
* [AVIF](https://ko.wordpress.org/plugins/tags/avif/)[converter](https://ko.wordpress.org/plugins/tags/converter/)
[image optimization](https://ko.wordpress.org/plugins/tags/image-optimization/)
[pagespeed](https://ko.wordpress.org/plugins/tags/pagespeed/)[webp](https://ko.wordpress.org/plugins/tags/webp/)
* [고급 보기](https://ko.wordpress.org/plugins/henkan-webp-avif-converter/advanced/)
## 평점
별 5점 만점에 5점.
* [ 1/5-별점 후기 ](https://wordpress.org/support/plugin/henkan-webp-avif-converter/reviews/?filter=5)
* [ 0/4-별점 후기 ](https://wordpress.org/support/plugin/henkan-webp-avif-converter/reviews/?filter=4)
* [ 0/3-별점 후기 ](https://wordpress.org/support/plugin/henkan-webp-avif-converter/reviews/?filter=3)
* [ 0/2-별점 후기 ](https://wordpress.org/support/plugin/henkan-webp-avif-converter/reviews/?filter=2)
* [ 0/1-별점 후기 ](https://wordpress.org/support/plugin/henkan-webp-avif-converter/reviews/?filter=1)
[Your review](https://wordpress.org/support/plugin/henkan-webp-avif-converter/reviews/#new-post)
[모든 리뷰 보기](https://wordpress.org/support/plugin/henkan-webp-avif-converter/reviews/)
## 기여자
* [ saguya ](https://profiles.wordpress.org/saguya/)
## 지원
할 말 있으신가요? 도움이 필요하신가요?
[지원 포럼 보기](https://wordpress.org/support/plugin/henkan-webp-avif-converter/)