apply_filters( 'jpeg_quality', int $quality, string $context )

Filters the JPEG compression quality for backward-compatibility.

Contents

Description
Parameters
Source
Related
- Used By
Changelog
User Contributed Notes
- Feedback

Description

Applies only during initial editor instantiation, or when set_quality() is run manually without the $quality argument.

The WP_Image_Editor::set_quality() method has priority over the filter.

The filter is evaluated under two contexts: ‘image_resize’, and ‘edit_image’, (when a JPEG image is saved to file).

Parameters

$quality int: Quality level between 0 (low) and 100 (high) of the JPEG.
$context string: Context of the filter.

Source

File: wp-includes/class-wp-image-editor.php. View all references

$quality = apply_filters( 'jpeg_quality', $quality, 'image_resize' );

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Used By

Used By
Used By	Description
wp_save_image_file() wp-admin/includes/image-edit.php	Saves image to file.
WP_Image_Editor::set_quality() wp-includes/class-wp-image-editor.php	Sets Image Compression quality on a 1-100% scale.

Changelog

Changelog
Version	Description
2.5.0	Introduced.

User Contributed Notes

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Contributed by behzadg — 7 years ago
To change JPEG Compression, temporarily add the below code to functions.php then refresh the site to re-compress all thumbnails on the site.
```
function my_prefix_regenerate_thumbnail_quality() {
	return 80;

}

add_filter( 'jpeg_quality', 'my_prefix_regenerate_thumbnail_quality');
```
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Feedback
- “Refresh(ing) the site” is not going to recompress the images. For this you’ll need to regenerate all thumbnails and derived sizes using a plugin for this purpose. — By theMikeD — 9 months ago
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Contributed by Emil Uzelac — 7 years ago

Snippets should be included here, not hosted elsewhere.

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Contributed by Rami Yushuvaev — 7 years ago

Changing the JPEG compression quality:

https://generatewp.com/snippet/xNM817E/

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