Extension Permissions

PhotoShow operates entirely within your local browser environment. Any permissions requested are solely used to enable features such as image previews, downloads, etc. PhotoShow does not access or manipulate unrelated data.

• "Read and change all your data on all websites"
  This permission is necessary for PhotoShow to function across all websites. PhotoShow does not read or modify content unrelated to its core functionality.

• "Manage your downloads"
  Required for enabling image downloads through PhotoShow. PhotoShow does not read or retain your download history.

• "Modify data you copy and paste"
  This optional permission is used only for enabling features such as copying images or their URLs to the clipboard. PhotoShow does not access or read your existing clipboard content and has no permission to do so. Users are prompted before this permission is requested for the first time.

How Data Is Collected and Stored

All usage data is sent to Google Analytics using its Measurement Protocol API. PhotoShow developers:

• Do not own, store or directly access the data

• Do not use tag-based approaches (e.g., gTag, GTM) for collecting usage data  

• Do not share or combine the data with any third parties

Google Analytics Advertising Consent Handling

PhotoShow explicitly denies consent for advertising-related data collection in all analytics payloads:

•  ad_user_data  and  ad_personalization  parameters are always set to  "denied" 

• No data is expected to be used for ad targeting or profiling

For technical documentation, see Google Analytics Consent Parameters.

Risks Associated with Enabling “Mark Viewed Image Links” and “Mark Viewed Image Thumbnails”

As of version 4.74.0 (released Aug 27, 2025), PhotoShow provides two optional Assistance and Enhancements features: “Mark viewed image links” and “Mark viewed image thumbnails”.

When enabled (both features are disabled by default), these functions display a small visual indicator alongside image links or thumbnails that have been viewed with PhotoShow, thereby facilitating enhanced tracking of viewed content.

These visual indicators are displayed only temporarily within the current page session and will disappear once the page is reloaded or updated by the website. PhotoShow does not maintain or store any viewing history for this marking feature.

Users are advised that, although the likelihood is minimal, enabling these features may theoretically expose browsing behavior to detection techniques commonly referred to as “history sniffing”. Such exposure could potentially be exploited by websites visited, or by third-party browser extensions or applications, resulting in unintended disclosure of user activity.

The decision to activate these features rests solely with the user. PhotoShow disclaims any liability for actual or potential privacy breaches, data exposure, or any other consequences arising from their use. By enabling either feature, the user acknowledges and accepts all associated risks.

Changes to This Policy

We reserve the right to modify this Privacy Policy & Terms of Use at any time. Updates will be published on official channels (e.g., extension store listing, this site, etc.). Continued use of PhotoShow after such changes constitutes your acceptance of the updated terms.