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Informations about the package deferred-image-processing

Deferred Image Processing - TYPO3 CMS extension

What does it do?

The extension defers the image processing from during page generation to when the image is actually requested from the client (browser). When the image is processed and placed in the storage's processed folder, it will not be processed again, until it is deleted or all processed images are cleared.

This is useful on sites with lots of images on one page. Instead of generating one image after another, leading to a massive delay in page generation speed, the image processing load is split to the available PHP processes and thereby to multiple CPU cores.

TYPO3 CMS & PHP version compatibility

TYPO3 CMS

Extension ↓ / TYPO3 → 10.4 11.5 12.4 13.4 14.4
1.0.0 ✅ ❌ ❌ ❌ ❌
1.1.0 ✅ ✅ ❌ ❌ ❌
2.0.0 ❌ ✅ ✅ ❌ ❌
3.0.0 ❌ ❌ ✅ ✅ ✅

PHP

Extension ↓ / PHP → 7.2 7.3 7.4 8.0 8.1 8.2 8.3 8.4
1.0.0 ✅ ✅ ✅ ❌ ❌ ❌ ❌ ❌
1.1.0 ✅ ✅ ✅ ✅ ✅ ✅ ✅ ✅
2.0.0 ❌ ❌ ✅ ✅ ✅ ✅ ✅ ✅
3.0.0 ❌ ❌ ❌ ❌ ✅ ✅ ✅ ✅

Installation & configuration

The extension is available from packagist.org

or from TYPO3 extension repository.

A database update is necessary to create the processing column sys_file_processedfile.processed.

RewriteRule for apache

If using the default htaccess file which is shipped with TYPO3, then there is a rule which stops all further processing of static files which are not found:

But for this extension to process the request - if no prepared image was found - needs to be redirected to index.php and is then handled by the middleware on the fly. So make sure to add a rule like this before the blocking rule above:

URL/HASH ref. @ Resource/Processing/AbstractTask

RewriteRule for nginx

Processing queue (optional)

The deferred images are marked in the sys_file_processedfile table by setting the processed column to 0. To process deferred images in the background, you can use the deferred_image_processing:process command, which can be run with a cronjob or be executed via the TYPO3 CMS scheduler.

This step is completely optional and not mandatory for the extension to work.

Documentation

As the extension does everything itself automatically, there is no need for further documentation. If you feel, a documentation could be helpful, please contact me or open an issue with your question.

Contributing

If you find a bug of want to improve the extension, you're free to fork it and provide a pull request with your changes. If you don't have the resources or knowledge, open an issue.

License

© 2020, WEBcoast

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

All versions of deferred-image-processing with dependencies

PHP Build Version
Package Version
Requires php Version ^8.1
typo3/cms-core Version ^12.4 || ^13.4 || ^14.0
typo3/cms-frontend Version ^12.4 || ^13.4 || ^14.0
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