Description
Are you concerned about being held liable for violating copyright law and would like to start crediting owners properly?
Do you want to give back to photographers and illustrators by adding image credits, so they are rightfully attributed?
Or are you a creator yourself and want to show information on the picture licenses for your image gallery under which publishers can use or purchase your work?
Image Source Control is your go-to solution when it comes to handling copyright-protected photos and illustrations.
Image Credit layouts
Choose between different credit displays:
- List all image sources below the content of a specific page or place the list manually
- Show an image caption overlay above the image
- Embed a complete image credit list with thumbnails on your website
Frontend Features
- Display image credits in the content, for image galleries, images added by shortcodes, and featured images
- … see more listed under Premium features below
- Define the layout and position of those attributions
- Attach the Per-page list automatically, by using a shortcode, or with a PHP function
- Display image sources on archive pages
- Link to the copyright holder and include a link to the image license
Backend Features
- Add credits for any image file uploaded to the Media library
- Dedicated image source fields for the following blocks: Image, Cover Image, Featured Image, Media & Text
- Quickly assign a centrally defined source to any image and choose three options: hide image sources for these images, show a specific source (e.g., your name), or the uploader’s name
- Warn about missing image sources
- Manage, display, and link available licenses
Featured Image Caption
ISC Lite works for Featured Images. By default, you will see the image credits options in the media library and the featured image options in the block editor.
The featured image caption shows in the Per-page list with all other image sources on the page.
Check out the premium features to display the image caption overlay for featured images.
Premium Features
Check out all features of Image Source Control.
- List credits for images outside the content
- Add multiple links to the source string
- Manage image credits for images hosted outside the Media Library
- Handle images without file extensions
- Bulk-edit image copyright information in the media library
- Show the standard picture credit for all images without a selected source
- Choose which data is displayed in the Global List
- List only images with a proper source in the Global List
- Show image sources for Elementor background images, images in Kadence Blocks Galleries, and Kadence Related Content Carousel
- Developer options to show overlay captions for CSS background images
- Support for background images of the Group block
- Exclude certain images from showing the overlay by adding the
isc-disable-overlay
class - Unused Images – a media cleaner overview of possibly unused images that runs a deep check before removing an image
- Personal email support
Instructions
Take a look at the Image Source Control Documentation.
Find a list of missing images sources and other debug tools under Media > Image sources
You can choose to display image sources below the post content or as a small caption overlay above your images. Just visit the settings page of the plugin to enable those options.
Manually included image sources on pages/posts
You can add the Per-page list manually to pages or posts via the shortcode [isc_list]
in your content editor or a text widget.
Use [isc_list id="123]
to show the list of any post or page.
Use the PHP code <?php if( function_exists('isc_list') ) { isc_list(); } ?>
within your template files.
List all image sources
You can add a paginated list with ALL attachments and sources attached to posts and pages—the Global list—using the shortcode [isc_list_all]
.
Use [isc_list_all per_page="25"]
to show only a limited number of images per page.
Use [isc_list_all included="all"]
to show all attachments in the list, including those not explicitly attached to a post.
The plugin searches your post content and thumbnail for images (attachments) and lists them if you included at least the image source or marked it to use the default image source.
Remove “nofollow” from all source links
In order to remove “nofollow” from source links, follow the instructions in our documentation.
Screenshots
edit image source settings in the Image block display a list with all images of your site and their sources display image source within the image basic settings to customize how to display image sources settings to manage image source licenses Unused Images – Media Cleaner feature to safely remove unused images
Installation
This section describes how to install the plugin and get it working.
e.g.
- Upload
image-source-control-isc.zip
through the ‘Plugin’ menu in your WordPress backend - Activate the plugin
- Visit Settings > Image Sources for the main settings
See the Instructions section here.
Reviews
Contributors & Developers
“Image Source Control Lite – Show Image Credits and Captions” is open source software. The following people have contributed to this plugin.
Contributors“Image Source Control Lite – Show Image Credits and Captions” has been translated into 5 locales. Thank you to the translators for their contributions.
Translate “Image Source Control Lite – Show Image Credits and Captions” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
2.17.1
- Improvement: create a unique name for the log file
- Improvement: show the overlay caption in the bottom left in the lightbox (added in WordPress 6.4) where the current position doesn’t show up
2.17.0
- Improvement: detect images file names generated by DALL·E
- Improvement: (Pro) support for background images for the Group block in WordPress 6.4
2.16.0
- Feature (Pro): Unused Images feature to help clean up the media library
- Improvement: combine images without sources and with empty sources in the «Images without sources» list on the Tools page instead of having two separate tables
2.15.0
- Improvement: (Pro) Support for dynamic background images in Elementor templates, e.g., featured images
- Improvement: (Pro) Disable links in overlays, e.g., when Elementor assigns a background image to
<a>
tags - Fix: The
<style>
block detection could sometimes cover multiple blocks and add the caption only to the last one - Dev: Added argument to
render_image_source_string()
that allows to disable links in the caption output
2.14.2
- Fix: Show the ISC input fields on media pages and media modals when the Block Options setting is enabled. The exception is still the media modal when an image is added on block edit pages.
- Dev: Prevent unnecessary database queries when an image has an invalid file extension
2.14.1
- Fix: PHP error on the first load of a page with an image that is not part of the media library
2.14.0
- Feature: (Pro) Support for images in Kadence Blocks Galleries and Kadence Related Content Carousel
- Feature: Added «CC BY-SA 2.0 DE» to available licenses
- Improvement: The Overlay position option became more visual and shows a preview when changed
- Improvement: Hide the position option, when the option to disable frontend markup is checked
- Improvement: Added Post Index section to the Tools page with a list of indexed published posts by post type
- Improvement: Reordered items and improved layout of the Tools page for more clarity
- Fix: Prevent the post_images index from being deleted for all posts when one post was updated. This bug had no negative visible effects, though.
- Dev: Move the code to analyze HTML to the new ISC\Analyze_HTML class
- Dev: Replace usage of media.php for compatibility with WordPress 6.3
2.13.0
- Feature: find .webp images. They are now officially supported in the WordPress Media library
- Feature: (Pro) set the
isc-disable-overlay
class on specific images to prevent the overlay from showing up - Feature: (Pro) Various options to load and show overlays for images in inline
style
attributes and between<style>
tags - Improvement: find alignment information classes also, when multiple classes are given in the
<figure>
tag - Improvement: allow line breaks between
<figure>
and the next tag - Improvement: added the
isc_extract_images_from_html
filter to manipulate images that use captions - Improvement: The
ISC_Public->render_caption_string()
function renders the overlay string - Fix: the page content was not put together correctly when
isc_stop_overlay
was added manually to it and no images were found
2.12.0
- Feature: (Pro) link different terms in the source string to different URLs
- Improvement: update missing image sources warning when an images was uploaded or deleted
2.11.0
- Improvement: (Pro) support background images of Elementor’s «Call-To-Action» widget
- Improvement: limit queries for missing sources to 100 to prevent the check from causing a timeout on sites with a lot of images
- Improvement: the source options show up in the media library overlay on post edit pages when Block options support is disabled
2.10.0
- Improvement: remove ISC fields from media frame when it is not loaded from the media library page to prevent confusions
- Improvement: remove translation for the brand ”Elementor”
- Fix: Debug log was enabled when the option was disabled and not used
2.9.0
- Improvement: (Pro) manage and display the image source for Elementor background images
- Improvement: (Pro) choose which data is displayed in the Global List
- Improvement: move the thumbnail options for global lists into the Included data settings
- Improvement: use the new Block Options setting to disable ISC fields for image blocks in the editor
- Improvement: route all calls to update_post_meta through the same internal function for better debugging
- Improvement: introduced the
isc_update_post_meta
action to hook into post meta updates - Improvement: the new
isc_filter_image_ids_from_content
filter allows custom image ID filtering from the content
2.8.0
- Feature: (Pro) manage images without a file extension
- Feature: (Pro) an option to list only images with a proper source in the Global List
- Feature: added ISC fields to Cover blocks using featured image.
- Feature: show feature image source string in the post excerpt block when the Insert below excerpts option is enabled
- Feature: the Global List settings show options for which images are included and how many per page. The appropriate shortcode attributes override them, if set.
- Improvement: prevent losing focus on attachment fields in the media modal when saving data
- Improvement: check overlay positions after the site is fully loaded to correct misplaced overlays
- Improvement: show a default thumbnail image in the global list, when WordPress didn’t create a thumbnail
- Improvement: show a default thumbnail in WP Admin for external images
- Improvement: added CSS rule to the Overlay for better compatibility with Divi theme
- Improvement: the new
isc_public_excluded_post_ids
filter excludes posts from running ISC in the frontend - Improvement: the new
isc_public_global_list_view_path
filter allows custom views for the Global List - Fix: specified style for overlay links to not also style other ISC related links
2.7.0
- Feature: added ISC fields to Media & Text block
- Feature: added ISC fields to the post’s Featured Image block
- Improvement: load ISC field data in the block editor only for images in the currently edited page
- Improvement: when the source of the featured image is displayed below post excerpts, it does no longer use the pre-text defined in the Overlay options. It now says «Featured image» by default and can be changed using the
isc_featured_image_source_pre_text
filter - Improvement: set the color for the source link in overlays to white (#fff) to be better visible by default
- Improvement: prevent line breaks for source links in overlays for the Featured Image block since WordPress 6.0
- Improvement: place the overlay correctly on the Cover block
- Improvement: show a link to disable the warning about missing images
- Fix: plugin options could miss default values on new installations
2.6.0
- Improvement: add FAL and GFDL to available licenses (clear the option to reset the list)
- Fix: Prevent premium options from becoming selectable when the Premium version is missing
- Dev: rewrite WP Admin check for ISC-related pages
2.5.0
Check out the new Premium Features
- Improvement: Require at least PHP 7.0
- Improvement: Added branded header with relevant links
- Improvement: Rename some methods for more clarity
- Improvement: Warn if one tries to enable multiple versions of ISC at the same time
- Fix: Make some strings translatable
2.4.0
- Feature: ISC Storage to prevent SQL queries in the frontend, #131, #132,
- Feature: List images that are not part of WP Media under Media > Image Sources
- Improvement: show image source lists and overlay strings on pages generated by the AMPforWP plugin and the reader mode in the official AMP plugin
- Improvement: add
isc_filter_image_ids_tags
filter to search for more than IMG tags - Improvement: add $attachment_id as parameter to filters:
isc_raw_attachment_get_license
,isc_raw_attachment_get_source
,isc_raw_attachment_get_source_url
- Improvement: accept line breaks in img and a tags when positioning the overlay
- Fix: PHP error in the widget block editor and Customizer
2.3.1
- fixed AMP validation errors
- prevent contributors from updating unrelated post meta, props to wpscan
2.3.0
- added
isc_source_list_line
andisc_source_list
filter hooks to allow developers to manipulate the source list output - added
isc_public_source_url_html
filter to manipulate the source link HTML - allow source injection into content outside the loop when using Oxygen page builder
2.2.1
- split admin scripts to load only those that are relevant for a given page
- fixed script issue on Image Sources debug page
2.2.0
- added compatibility with the upcoming Pro version
- Pro: show an overlay for images outside of the main content (e.g., feature images and some page builder)
- add option to strip overlay output from any markup and use hooks to define own styles
- find sources for images after moving the site to another URL
2.1.1
- only load ISC-related scripts on the plugin’s admin pages
- compatibility with line breaks between link and image tags when placing the overlay
- prevent adding the overlay multiple times to images that appear more than once on a page
- fixed overlay text showing up in automatically created excerpts
- fixed jQuery shorthand warnings in the backend
- fixed source overlays for images with links
2.1.0
- rewritten jQuery to vanilla JavaScript in the frontend code
- only index the images of posts in the main loop to prevent getting it from filtered content
2.0.0
- the full source list is now updated when a post is visited for the first time not after being saved
- the «own image» option is now «standard source» to better represent its purpose and possibilities
- improved settings page visually and for more clarity
- use span instead of div container for source overlays
- rewrite of the block options to make them more stable
- introducing a model class
- introduced debug option
- introduced option to reindex image-post relations again
- introduced
isc_sources_list_override_output
filter to allow overriding the output of a source list - introduced
isc_source_list_empty_output
filter to allow output when a list of sources is empty - fixed showing the sources list on single pages when the «list below content» was disabled while the same option for archive pages was
- fixed indexing post content for images when the post is saved in the block editor
- fixed infinite loops breaking autosave feature in the block editor
- various fixes to debug tables
- removed unneeded code to recognize the gallery shortcode in classic editor
- removed broken PHP code causing an issue when using the
isc_images_in_posts_simple
filter - removed option to add a link to the ISC website in the frontend
1.10.4
- fixed block editor files being loaded in the frontend
1.10.3
- fixed JavaScript bug in block editor with WordPress 5.3
1.10.2
- removed CSS class which was set automatically in the image block
1.10.1
- fix for block translations
1.10
- added image source settings to Image block
1.9.7
- changed
licence
string tolicense
to match en_US language base - extended list of copyright licenses
1.9.6
- fixed issue using [isc_list] without overlays
1.9.5
- removed additional output introduced in 1.9.3
1.9.4
- fixed index error
1.9.3
- prevent image source overlay on full image source list and below
- optimized query of missing-sources check
- only check for missing sources when an image was uploaded or once every 24 hours
1.9.2
- prevent infinite loop for posts with automatic image source lists where images are not index yet
- moved German translation to wordpress.org
1.9.1
- delayed displaying source overlay by 100 ms to give images a chance to load their height
- fixed wrong height of the overlay being used
- fixed missing textdomain code to allow translations added through wordpress.org
1.9
THIS UPDATE CONTAINS SOME BASIC CHANGES ON HOW IMAGES ARE DETECTED IN THE CONTENT. PLEASE TEST IT.
Please reach out in case you are suddenly missing any image sources.
- rewritten the way how images are detected in the content of the post or page
- replaced use of image url with attachment ID where possible to lift some heavy loads
- fix for image names including dimensions (e.g., 300×250)
- works with version 2.4.0 of Gutenberg plugin
- place overlay correctly even when page continues to shift after being loaded
- load public JavaScript in footer by default
- prevent saving ISC post meta information on non-public post types
1.8.11.2
- fixed align value not being understood correctly
1.8.11.1
- fixed missing index issue
- call parent class in admin class constructor
1.8.11
- cleanup
- removed log spam introduced with 1.8.10
- prevent SQL injection through crafted img src attributes
1.8.10.1
- hotfix for php below 5.3
1.8.10
- don’t list images attached to non-public posts in the full image list, when only visible images should be displayed, thanks to heiglandreas
- added fallback to read images from galleries
- added
isc_get_image_by_url_query
filter - fixed image list being empty due to autosave
- read src from attribute according to dom documentation, thanks to heiglandreas
- tested with WordPress 4.4 beta 4
1.8.9
- rather use than error-log query
1.8.8
- search for image urls regardless of their used protocol (http or https)
1.8.6 | 1.8.7
- removed duplicate post links on full source list
1.8.5
- fixed deprecated sanitize_url()
1.8.4
- [feature] added option to display all images in the full list, not just those visible in posts
- [fixed] default author text not showing up
1.8.3
- [fixed] saving pre text for source overlay, thanks to maler.whick
1.8.2
- [feature] show image sources for changed images
- [feature] show image sources for images with query parameters
1.8.1
- [fixed] set default value for new option to prevent error message
1.8
- [feature] display image sources on archive pages (see settings)
- [feature] use
isc_thumbnail_source()
to display thumbnail source in templates - [feature] added image sources for galleries and other shortcodes
- updated German translation
1.7.3
- [fixed] bug on ajax calls preventing the source fields to show up on ajax called pages in the dashboard
- [fixed] bug on multisite update
- [optimized] don’t hide setting boxes
- [optimized] finished moving all publically needed function to its own class
1.7.2
- [fixed] error message shown when list type settings was empty or unsaved
- [fixed] source overlay showing if no image source was set for it
- [optimized] trim source input
1.7.1
- [fixed] source list function referring to the wrong plugin class
1.7.0
- [optimized] manage different source display types on top of settings page
- [optimized] renamed settings page to «Image Sources»
- [removed] hiding source list elements in the frontend is no longer possible
- [fixed] show source list not only below posts, but every other post type
- [fixed] removed screenshots from main plugin files