picu – WordPress Photo Proofing Gallery


Professional Online Photo Proofing with WordPress

Send a collection of photographs to your clients for approval.

  • With picu you can create photo galleries that allow your clients to select and approve images.
  • Send a link to your clients via email as part of the workflow.
  • Once your client approves a collection, you will automatically be informed via email.
  • You can then easily retrieve your client’s selection to use in your photo management software of choice.

All from the comfort of your own WordPress website.

Install picu and say goodbye to overcomplicated communication with your clients. Shoot, upload, get approved!

picu uses its own, beautiful, theme-independent design for proofing collections. This ensures a consistent, user-friendly and easy to understand workflow for your clients. Customization and branding options are available with our Pro modules.

Images uploaded through picu are separated from the the regular media library. This is by design. We separate them, because proofing images are usually not meant to being published.

If you have any questions or suggestions, take a look at our documentation or ask via email. We are here to help and love to hear your feedback.

Go Pro

picu Pro – Enables even greater functionality:

  • Brand & Customize lets you add a custom logo and adapt the client gallery to match your branding.
  • Mark & Comment allows your clients to add comments and markers to individual images.
  • Selection Options allows you to define the number of images your client needs to select to approve a collection.
  • Download enables your client to download all collections images as a .zip file.
  • Import gives you the ability to upload large amounts of images via FTP and import them directly from your web server.
  • Theft Protection helps you to prevent image theft from picu collections by adding a watermark to your uploads and more.
  • Multi-Client Support allows you to send collections to multiple recipients and receive individual selections.

Priority Support: We try our best to provide support and answer questions in the WordPress.org forums, but please be aware that one-on-one priority support via email is only guaranteed to people who bought a Pro license.


  • PHP 7.4
  • WordPress 5.6




  • picu in the WordPress Admin: Simply create a collection of photos and send it to your client.
  • This is how the client sees the proofing gallery. (You can choose between a dark and a light theme, btw.)
  • Once the collection is approved you'll receive an email like this.
  • Collection overview, with status indicators for approved, waiting and draft.
  • View approved images and conveniently copy filenames with one click or download the proof file.
  • Setting a collection goal. (Part of picu Pro)
  • Import images directly from your web server. (Part of picu Pro)
  • Add comments and markers to individual images. (Part of picu Pro)


  1. Upload the picu folder to your /wp-content/plugins directory.
  2. Activate the «picu» plugin in the WordPress administration interface.


I have a problem. Where can I get help?

Please take a look at our documentation first.

Still having issues? Check out the support forum here on wp.org or reach out via our support page.

Emails are not working

Can WordPress send emails?

picu uses functions built into WordPress to send emails. If you have any email issues, please make sure your WordPress installation can send emails, eg. notifications for new comments, resetting passwords etc. If those don’t work, picu can’t send out emails either.

Receiving a notification once the client has approved a collection

An email will be sent to you, announcing that the client has approved a collection. This email will be sent to the email address specified in your user profile. In the WordPress Admin go to “Users > Your Profile” to see/change that address. Make sure it is correct and working, otherwise you won’t receive any notifications!

Changing the FROM name and address

In case picu emails end up in the client’s SPAM folder, they can either whitelist the from address (no-reply@ + your domain name) or you can use these filters to change the FROM name and address.

When viewing a collection I get a “page not found” / 404 error

In your WordPress Admin, go to “Settings > Permalinks”. There is no need to “Save Changes”, just visiting the page will flush the rewrite rules so that any changes to the permalink structure will take effect. Sometimes this needs to be done manually, eg. after changing the language of your website or after a new plugin was activated that introduced new permalinks.

I don’t see any images when viewing my collection

In 90% of cases this issue stems from using some kind of optimization or caching plugin. Please make sure to exclude picu collections from any kind of optimization or caching in the respective plugin’s settings.

picu images show up in the Media Library

This sometimes happens. Usually third party plugins tamper with the way image uploads are connected to their parent. If that connection between image and collection is lost, picu can’t filter its images from appearing the library.

picu images do not show up in the Media Library

This is intentional. 🙂 We wanted to strictly separate the images that you use in a picu collection from the images you use on your website, thereby keeping you from accidentally using an image from a collection in a blog post or in your portfolio.

The media library would get completely crammed und confusing having hundreds or in some cases thousands of (temporary) images in there.

picu also cleans up behind itself: When you delete a collection, all images are deleted from the server automatically. (You can see how using an image elsewhere on the site would become a problem here.)

More options are available via filters and action hooks

There are lots of additional options to configure and extend picu by using a little bit of code. To get started, have a look at our developers page. Also, please have a look at our examples page with lots of working code snippets.

Can I help translate picu into my language?

Yes! picu has been translated by our kind users in more than ten languages. You can add translations by going to translate.wordpress.org. Choose your language, then click on «Stable (latest release)» and start adding translations.

(Please note, that you need a WordPress.org account to add translations.)

BTW: We are looking for people to help us translate our Pro modules as well. If you are interested in a free license, get in touch.

I have an idea that would make picu even better

Awesome! We are always open to feature suggestions and are always interested to learn about photographers’ workflows. Please get in touch!


11 de noviembre de 2022
Claudio and the team are very supportive. Each new release provides valuable features and the Pro version continues to make the plugin seamless and very user-friendly for the my clients. Thank you for all your hard work!
12 de agosto de 2022
Great plugin, very responsive support also. The guys that wrote it are fantastic and always open to improve. Thanks!
1 de agosto de 2022 5 replies
UPDATE: I'm updating my review to reflect my genuine appreciation that Picu stepped up to work with me to resolve the issue. Thank you, Claudio. 🙂 I used the paid version for a wedding client in 2021 and it ended up not being the type of service I was looking for so I deleted the plugin. A year later, 2022, Picu.io auto-renewed my subscription without notification. When I saw the charge on my credit card statement, I reached out to request a refund and was denied ("our refund policy is 14 days maximum" Claudio wrote.) I feel this is a really shady way for a company to generate revenue.
Leer todas las 47 reseñas

Colaboradores y desarrolladores

«picu – WordPress Photo Proofing Gallery» es un software de código abierto. Las siguientes personas han colaborado con este plugin.


«picu – WordPress Photo Proofing Gallery» ha sido traducido a 16 idiomas locales. Gracias a los traductores por sus contribuciones.

Traduce «picu – WordPress Photo Proofing Gallery» a tu idioma.

¿Interesado en el desarrollo?

Revisa el código , echa un vistazo al repositorio SVN o suscríbete al registro de desarrollo por RSS.

Registro de cambios


Release Date: September 18th, 2023

  • Fix a bug where, when using the filter to customize filenames, certrain characters could break the copy to clipboard button (Thx Roberto S.)
  • Fix button alignment
  • Improve translations, add more translator comments


Release Date: September 6th, 2023

  • Enhancements
    • Introducing picu Telemetry: We would very much appreciate you allowing us to gather some anonymous usage data. You can find more information about this topic on our website: https://picu.io/docs/telemetry


Release Date: August 22nd, 2023

  • Enhancements
    • This is probably only exciting for us plugin devs, but we are now using GitHub actions to release new versions of picu.


Release Date: July 7th, 2023

  • Enhancements
    • It is now possible to filter the «Send selection…» button text
    • Changing the order of collection images can now be undone
    • Display a notice, if the old Pro modules are still in use


Release Date: June 19th, 2023

  • Enhancements
    • Collection base slug can now be defined unter «Settings > Permalinks»
    • New picu Pro plugin compatibility


Release Date: May 12th, 2023

  • Enhancements

    • Sorting images by filename – either in ascending or descending order
    • Add a button to easily copy the collection URL to the clipboard, when the share option is set to «manual»
    • Use more meaningful link texts in the collection overview row actions depending on the collection status (e. g. «View Proof Results» instead of «Edit»)
    • Add more contrast to UI elements to make it more accessible
    • Minimum required PHP version is now 7.4
  • Bugfixes

    • Fix a bug in the media library, where the date filter dropdown could display empty months


Release Date: April 26th, 2023

  • Bugfixes
    • Fix an issue where switching between picu settings tabs did not work


Release Date: April 26th, 2023

  • Enhancements

    • We moved our debug info into «Tools > Site Health > Info»; We also added a button that copies all of the debug info into your clipboard
  • Bugfixes

    • Fix a bug in displaying very long URLs in picu emails
    • Fix a bug where tabs in the WP Admin could look wrong on small screens
    • Fixed a bug where picu image sizes could be generated for images that are not part of a picu collection


Release Date: March 14th, 2023

  • Enhancements
    • picu now remembers previous recipients’ email addresses
    • The date column now contains the modified date and reflects the latest status change


Release Date: February 21st, 2023

  • Bugfixes
    • Fix image dimensions in Safari (Thx Ivo T.)
    • Fix an issue with long image titles in the Delivery Module (Thx Andreas S.)
    • Add missing string for translations (Thx Romain L.)


Release Date: November 23rd, 2022

  • Bugfixes
    • Fix an issue where the email subject of the approval email could contain encoded characters (Thx Anna)
    • Fix a PHP warning when duplicating a collection (Thx Anderas S.)


Release Date: November 17th, 2022

  • Bugfixes
    • Fix an issue where the the delivery email would not be sent out (Thx Ricardo)
    • Fix an issue where the selection target (as part of the Selection Options Pro module) would not be added to the email


Release Date: November 11th, 2022

  • Bugfixes

    • Fix an issue where the email subject could contain encoded characters (Thx Anna)
    • Fix an issue where collections sent to mutliple recipients would be listed when using the picu_list_collections short code without also specifing an email address (Thx Thomas)
  • Enhancements

    • Adding a referrer field to the password form to make it more reliable (Thx Benjamin R.)


Release Date: November 8th, 2022

  • Enhancements
    • Completely rewritten email functionality
    • picu now supports custom email templates and styling
    • The proof file is now attached to the notification email
    • Added many new filters in regards to email, eg. to add CC and BCC addresses
    • Added new action hooks for various picu events, eg. after a collection has been approved
    • Find out more in our release post at https://picu.io/2022/11/new-in-picu-1-7-0/


Release Date: June 13th, 2022

  • Enhancements

    • Added a new action hook that allows you to display content above the collection images
    • Added a new filter to change the approval heading
    • Added a new filter to change the approval button text
    • Added a new filter for collection post type arguments
    • Added a new action hook after a collection has been approved
    • Added support for custom approval forms (part of the Brand & Customize Pro module)
  • Bugfixes

    • Fix a visual regression bug in the media upload modal introduced with WP 5.8


Release Date: January 27th, 2022

  • Bugfixes
    • Fix a PHP warning when using WordPress 5.9 (Thx Jörg S.)


Release Date: December 15th, 2021

  • Enhancements
    • It is now possible to define a custom FROM name and address for picu emails in the settings (before, it was only possible to set these via a filter)
    • Define an email address to receive all picu notifications (by default notifications are sent to the collection author)
    • The number of collection images is now displayed in the status meta box


Release Date: October 7th, 2021

  • Bugfixes
    • Fix a bug where the photographer would not receive an email when a collection was approved


Release Date: September 30th, 2021

  • Enhancements
    • Display the time (in addtion to the date) for each status in the collection status box
    • Add a Move to Trash link when editing a collection
    • Add new filter «picu_approval_mail_recipient», to overwrite the TO email address for approval mails
    • Performance optimizations


Release Date: August 10th, 2021

  • Enhancements
    • Compatibility with new Pro feature to send collections to multiple clients
    • Download the proofing .txt file right from the collection overview
    • Refined approved view
    • Copy filenames based on a filter (eg. approved, not approved)
    • Update color scheme to match WordPress


Release Date: March 29th, 2021

  • Enhancements
    • Improved collection list shortcode, added two new attributes: status and current_user


Release Date: January 25th, 2021

  • Bugfix
    • It seems that one Yoast filter did cause some issues when uploading images. We will file a bug report with them shortly.


Release Date: January 25th, 2021

  • Enhancements
    • Improved compatibility with Yoast SEO plugin


Release Date: November 20th, 2020

  • Bugfixes
    • Fix a bug where a collection could not be displayed if an image description contained certain characters


Release Date: August 7th, 2020

  • Enhancements
    • Compatibility improvements and fixes for the upcoming WordPress 5.5 release


Release Date: July 31st, 2020

  • Enhancements
    • Improve light theme for delivery collections


Release Date: July 29th, 2020

  • Enhancements
    • WordPress 5.5 compatibility
    • Add filter for the filenames when copying approved images


Release Date: July 16th, 2020

  • Enhancements
    • Improve Delivery module integration


Release Date: June 19th, 2020

  • Enhancements
    • The collection password will now be accessible in the approved view (Thx Michal)
    • The collection author no longer needs to enter the password to access password protected collections (Thx Charles O.)
    • Updated Pro screen to include the Delivery module


Release Date: June 17th, 2020

  • Enhancements
    • New approved view
    • You can now see which images are selected even before the collection is approved
    • You can now download a text file that contains the proofing information for archiving/save keeping
    • You can now disable random collection slugs in the settings
    • You can now disable sending collection passwords with the email to the client in the settings
    • Prepare for upcoming Delivery Pro module release


Release Date: March 13th, 2020

  • Enhancements

    • You can now duplicate a collection, using just the unselected images (before you could use all or just the selected images)
  • Bugfixes

    • Fix an issue were full sized images could be loaded in the collection overview (Thx Charles O.)
    • Fix an issue where picu images, that were uploaded with a specific IPTC keyword, could show up in a keyword based gallery, created with the Media Library Assistant plugin (Thx Thorsten K.)
    • Fix a bug where a php notice could show up when using NextGen Gallery (Thx Helene V.)


Release Date: February 5th, 2020

  • Bugfixes
    • Fix a bug where a single download would link to a scaled version of the image (Thx Marcus B.)
    • Fix a bug where scaled image would be generated when duplicating a collection (Thx Alan)
    • Fix media modal alignment and improve third party plugin compatibility


Release Date: December 18th, 2019

  • Bugfixes
    • Include the updated stylesheet, duh!


Release Date: December 18th, 2019

  • Enhancements

    • Prepare for upcoming Download Pro module update
  • Bugfixes

    • Fix a bug where a button would have the wrong label when the default send method is set to manually (Thx Charles O.)


Release Date: November 24th, 2019

  • Enhancements
    • Add filter to change the email subject when sending a collection to a client (Thx Mohamed E.)
    • Add filter to set the default share method (Thanks Charles O.)
    • picu will not generate a «scaled» version of an image, introduced in WordPress 5.3 (Thx Sean T.)


Release Date: October 18th, 2019

  • Enhancements
    • Flush permalinks after collection base slug has been changed
    • Automatic redirection from old to new collection base slug
    • Add wpml-config.xml


Release Date: September 13th, 2019

  • Enhancements

    • Prepare for upcoming Import and Theft Protection Pro module releases
  • Bugfixes

    • Fix a bug where special characters in the description could break the collection view


Release Date: August 20th, 2019

  • Enhancements

    • Prepare for new Brand & Customize Pro module version
    • Improve mobile view when using the Mark & Comment Pro module
  • Bugfixes

    • Fix strings that could not be translated (Thx Charles O.)
    • Fix a PHP warning that would trigger an error message when approving a collection (Thx Shane B.)
    • Fix an error where the approval screen would indicate a client message, when there actually was none (Thx Thorsten K.)


Release Date: July 24th, 2019

  • Enhancements

    • Prepare for Theft Protection Pro module update
    • Integrate traduttore registry to automatically update translations for Pro modules (Thx @wearerequired)
    • Use proper way to include the password form for collections
  • Bugfixes

    • Fix a bug where the slug could not be changed when the collection has not been saved (Thx Charles O.)
    • Fix strings that could not be translated


Release Date: April 24th, 2019

  • Enhancements

    • When using the picu_list_collections shortcode, you can now add a message to be displayed, when no collections are found (Thx Nicolas L.)
  • Bugfixes

    • Fix a bug where single quotes would be falsely converted (Thx Charles O.)


Release Date: April 15th, 2019

  • Bugfixes
    • Fix a bug where the logo could not be updated in the Brand & Customize settings (Thx Pascal O.)


Release Date: April 8th, 2019

  • Enhancements
    • Make picu compatibale with more plugins, that hijack image upload handling
    • Prepare for upcoming Theft Protection Pro module release


Release Date: April 3rd, 2019

  • Enhancements

    • Button text switches between «Publish» and «Send to Client» depending on which sharing method is selected.
  • Bugfixes

    • Collections are once again accessible when published but not yet sent. (Would return a 404 error in version 1.4.0.)
    • Fix a tinymce styling bug (Thx Bastien J.)


Release Date: March 22nd, 2019

  • Enhancements

    • Lazy loading!
  • Bugfixes

    • Fix lightbox view in IE 11
    • Fix duplicate filter name (Thx Christian F.)
    • Prevent Real Media Library plugin to mess with the upload screen


Release Date: January 31st, 2019

  • Enhancements

    • New button to reopen a collection after it has been approved
    • Use Quick Edit to set the collection status to draft, sent or approved
    • You can now duplicate either all or selected images only
  • Bugfixes

    • Fix a bug that could prevent duplication from working
    • Fix image count in collection overview


Release Date: January 14th, 2019

  • Enhancements

    • Include my-picu.php_example file to show available filters/hooks
    • Debug info is now only shown to administrators
  • Bugfixes

    • Fix a bug where the custom picu upload path could not be set correctly (Thx Jörg S.)
    • Fix a bug where a Pro license could not be removed


Release Date: November 22nd, 2018

  • Enhancements

    • Prevent Autoptimize from «optimizing» picu collections
  • Bugfixes

    • Fix a bug where collections could fail to load in IE
    • Fix a bug where collections could not be send in IE
    • Fix a bug where image meta data could cause collections not to load
    • Fix a bug where left over code would show up in the UI (D’oh!)


Release Date: November 8th, 2018

  • Enhancements

    • Add a new filter to disable random URL slugs
    • Introduce picu Pro
    • Update welcome and picu Pro screens
    • Update plugin name and readme content
  • Bugfixes

    • Fix a bug where picu images would show up in the Media Library (Thx David G.)
    • Fix a bug where images would be stretched beyond their natural size in the light box
    • Fix a minor bug that could throw a PHP notice
    • Fix minor bugs regarding Mark & Comment module


Release Date: September 25th, 2018

  • Enhancements

    • Collections now auto save!
    • Table view is now the default when viewing approved collections in the WordPress Admin
    • Prepare for upcoming Mark & Comment add-on release
    • Disable Gutenberg for picu collections (until it is ready)
    • Automatically remove picu collections from xml sitemaps generated by The SEO Framework plugin
    • Automatically remove The SEO Framework and Yoast meta boxes from the collection edit view
    • Disable NextGen Gallery «resource manager» that caused issues when viewing picu collections
  • Bugfixes

    • Fix searching by filename in the media library


Release Date: November 4th, 2017

  • Enhancements

    • Add image number to the lightbox view
    • Add filter that allows you adjust the from email address for picu emails
  • Bugfixes

    • Fix a bug that could prevent duplication from working
    • Fix encoding for translations


Release Date: July 25th, 2017

  • Enhancements

    • Add shortcode [picu_list_collections] to display a list of collections
    • Update add-ons page
    • Final preparations for Download add-on release
  • Bugfixes

    • Lightbox performance improvement for large collections


Release Date: May 26th, 2017

  • Enhancements

    • Copy filenames into the clipboard with one click!
    • Add blog URL and active theme to our debug page
    • Final preparations for Selection Options add-on release
  • Bugfixes

    • Remove a bug that prevented some collections from being duplicated


Release Date: April 14th, 2017

  • Enhancements
    • Add possibility to filter selected/unselected images in the front end
    • Add a new column to the collection overview screen, that shows how many images have been selected
    • New default image size is now 3000px wide (was 1024px before)
    • Small design refinements
    • Add filter for picu collection slug
    • JS templates will now work with asp style php tags enabled
    • Attachment pages for picu images will not show up in Yoast xml sitemaps, attachment pages will redirect to the homepage
    • Preparation for upcoming Selection Options add-on release


Release Date: December 9th, 2016

  • Enhancements
    • Revised notification system with more meaningful notices when saving and sending collections
    • More preparation for upcoming add-on releases
    • Speaking of add-ons: Check out https://picu.io/add-ons for the first two add-ons!


Release Date: October 11th, 2016
* Enhancements
* Preparation for upcoming add-on releases

  • Bugfixes
    • Removes an embarrassing bug which added «test: » before email subjects


Release Date: August 16th, 2016

  • Enhancements
    • You can now duplicate collections
    • Update how picu sends emails
    • Prevent picu collections form showing up in Yoast SEO’s xml sitemaps
    • More preparation for upcoming add-on releases


Release Date: June 7th, 2016

  • Enhancements
    • Add rudimentary print css
    • Add page with debug information under settings
    • picu can now be translated by everyone via https://translate.wordpress.org/projects/wp-plugins/picu
    • Update Add-Ons page
    • Preparation for upcoming add-on releases


Release Date: April 21st, 2016

  • Enhancements

    • Add filter to change the default filename separator, see picu FAQs for details
    • Add Finnish translation (Thx Rami & Tom)
  • Bugfixes

    • Make picu compatible with (some) caching plugins


Release Date: March 12th, 2016

  • Enhancements
    • Redirect clients to the homepage after they submitted their selection
    • Implemented a hook to change the default email message
    • Small styling enhancements


Release Date: January 22nd, 2016

  • Enhancements
    • picu now (officially) supports password protection for collections
    • Added a dialog box when trying to edit a collection that has already been sent to the client
    • Added a loading indicator when saving/sending collections in the front end
    • Lots of small styling enhancements


Release Date: December 29th, 2015

  • Enhancements

    • Added new labels for our Custom Post Type «Collections» (WordPress 4.4+)
    • Added a new filter for customizations through Add-Ons
  • Bugfixes

    • Fixed a conflict on some admin screens when $current_screen wasn’t set


Release Date: December 9th, 2015

  • Enhancements

    • Added support for native responsive images (WordPress 4.4+)
    • Updated German translations
  • Bugfixes

    • Fixed a display error in the backend for WP 4.4+


Release Date: November 25th, 2015

  • Enhancements

    • Completely redesigned backend UI!
    • Added the possibility for other sharing options (instead of email)
    • Re-Organized some files behind the scenes
  • Bugfixes

    • Fixed size of thumbnails in backend after upload
    • Fixed a bug on the welcome screen
    • Fixed width of Add-On boxes for large screens


Release Date: October 29th, 2015

  • Enhancements

    • Update translations
    • Added licensing functionality for picu add-ons
  • Bugfixes

    • Fixed a bug where a collection would not be displayed correctly
    • Fixed a bug where email content was not formated correctly


Release Date: October 23rd, 2015

  • Enhancements

    • Display maximum file size limit for image uploads
    • HTML emails are now sent by default (can be turned off in Settings)
    • Added some missing translations
    • Added custom hooks and more small preparations for picu add-ons
  • Bugfixes

    • Add versioning to js/css files to make sure the right files are loaded, regardless of caching
    • Fixed some display bugs in IE


Release Date: October 7th, 2015

  • Enhancements
    • HTML email notifications
    • Improved compatibility with other plugins
    • Added more under-the-hood goodness to prepare for future updates and the release of picu add-ons


Release Date: September 12th, 2015

  • Enhancements

    • Added a new list view and filter to check approved images in the backend
    • Added preview thumbnails to theme settings
    • Added filter hooks to backbone templates and collections, models & views
  • Bugfixes

    • Remove double admin page titles


Release Date: September 7th, 2015

  • Enhancements

    • Added the photographers email address as CC in emails to the client
  • Bugfixes

    • Fixed confirmation emails to the photographer when a collection is approved
    • Fixed a bug where images were displayed in the wrong order
    • Fixed a bug where admin notices were displayed in the wrong places
    • Fixed password protection for collections
    • Fixed uninstall routine for multisite installations


Release Date: September 1th, 2015

  • First official release (public beta) to the WordPress.org repo.