Dataset Transparency & Creator Appreciation

Image Dataset Attributions & Creator Appreciation

PicRush incorporates high-resolution visual assets shared by talented photographers and visual artists across the globe. We responsibly curate our gameplay visual datasets and vocabulary learning assets from the world's leading open-access platforms—Unsplash, Pexels, and Pixabay. This page documents our licensing compliance, dataset governance standards, attribution formatting, and heartfelt appreciation for the global creative community.

3 Major Sources

Unsplash, Pexels, Pixabay

Licensed & Open-Use

Free-to-Use Provider Terms

Family-Friendly

Curated Content Moderation

Creator First

Attribution & Removal Process

Image Source Partners & License Breakdown

Overview of provider licenses, permitted uses, restrictions, and attribution practices for each of our visual content providers.

Unsplash

Unsplash

Unsplash License

The internet's source for visuals powered by creators everywhere.

Community Gratitude & Respect

We express our profound gratitude to the hundreds of thousands of generous photographers worldwide who share their breathtaking imagery with the open web via Unsplash.

For API-driven implementations, Unsplash API guidelines require attribution to Unsplash and the photographer with direct profile backlinks.
Permitted Uses Under Provider License
  • All photos can be downloaded and used for free
  • Commercial and non-commercial educational use permitted under the Unsplash License
  • No permission needed from the photographer or Unsplash for standard use
  • Modification, cropping, and adaptive in-game visual presentations allowed
Respected Terms & Third-Party Boundaries
  • Photos cannot be sold without significant modification
  • Cannot compile photos from Unsplash to replicate a similar or competing service
  • Images may not be used in trademarks, service marks, or official logos
  • Model, property, or trademark releases are not verified by Unsplash; additional third-party permissions may be required
Attribution Formats & Community StandardsVoluntary Community Credit Standard
Quick Credit (Recommended):Photo by [Photographer] on Unsplash
Optional Full Credit:"[Image Title]" by [Photographer], licensed under Unsplash License. Source: Unsplash
Rights described here are subject to the current terms of each provider. Third-party trademark, privacy, and publicity rights may still apply.
Pexels

Pexels

Pexels License

Free stock photos and videos shared by talented creators.

Community Gratitude & Respect

Special thanks to the global community of Pexels photographers whose vivid visual assets help make PicRush's vocabulary learning tactile and universally accessible.

PicRush uses Pexels content strictly as in-game vocabulary puzzle assets and does not offer raw downloads or bulk data extraction.
Permitted Uses Under Provider License
  • All photos and videos on Pexels are free to use for commercial and personal projects
  • Attribution is not required, though giving credit is appreciated by the community
  • You can modify photos and videos. Be creative and adapt them for games
  • PicRush incorporates Pexels content within its interactive vocabulary game, subject to the Pexels License and Terms of Service
Respected Terms & Third-Party Boundaries
  • Identifiable people may not appear in a bad light or in a way that is defamatory or offensive
  • Do not sell unaltered copies of a photo (e.g. as a standalone stock photo or poster print)
  • Do not imply endorsement of your product by recognizable people or brands in the imagery
  • Do not redistribute, sell, or mirror the photos on other stock photo or wallpaper platforms
  • Bulk data extraction and unauthorized machine-learning dataset scraping prohibited without consent
Attribution Formats & Community StandardsVoluntary Community Credit Standard
Quick Credit (Recommended):Photo by [Photographer] from Pexels
Optional Full Credit:"[Image Title]" by [Photographer], licensed under Pexels License. Source: Pexels
Rights described here are subject to the current terms of each provider. Third-party trademark, privacy, and publicity rights may still apply.
Pixabay

Pixabay

Pixabay Content License

Stunning free images and royalty-free stock media community.

Community Gratitude & Respect

We warmly acknowledge the visionary artists and photographers on Pixabay who make royalty-free visual discovery possible for learners around the globe.

Content is utilized in accordance with Pixabay's Content License for digital educational gaming.
Permitted Uses Under Provider License
  • Use content for free across digital apps, websites, interactive games, and media
  • Commercial use permitted subject to the Pixabay Content License terms
  • Use content without mandatory attribution (though warmly acknowledged and credited)
  • PicRush incorporates Pixabay media within its vocabulary learning game, subject to the Pixabay Content License
Respected Terms & Third-Party Boundaries
  • Do not sell or distribute content as standalone digital files, wallpapers, or physical prints
  • Do not register content or derivative works in copyright enforcement systems (e.g. Content ID)
  • Do not portray identifiable people or recognizable property in a defamatory or misleading manner
  • Do not compile media into a competing stock image repository or download service
  • Responsibility for determining whether third-party trademark or property permissions are required rests with the user
Attribution Formats & Community StandardsVoluntary Community Credit Standard
Quick Credit (Recommended):Image by [Artist] from Pixabay
Optional Full Credit:"[Image Title]" by [Artist], licensed under Pixabay Content License. Source: Pixabay
Rights described here are subject to the current terms of each provider. Third-party trademark, privacy, and publicity rights may still apply.
Ethical Curation Standards

Dataset Governance & Quality Standards

Every picture in PicRush undergoes a multi-stage review pipeline designed to protect learners, maximize English vocabulary acquisition, and deliver seamless real-time speedrun rounds.

Family-Friendly Content Moderation

Every image in the PicRush gameplay pool passes automated safety filters and human moderation reviews, ensuring safe, age-appropriate visual subjects for schools, families, and learners of all ages.

Lexical & CEFR Vocabulary Grading

Visual assets are systematically tagged and categorized into Beginner (A1-A2), Intermediate (B1-B2), and Advanced (C1-C2) English vocabulary tiers, with curated synonyms and typo tolerance mappings.

Unambiguous Subject Clarity

We curate photos with clear, distinctive focal subjects to ensure fair, crisp guessing gameplay across normal, pixelated, blurred, and grayscale round modes.

Optimized WebP Delivery & CDN

Images are formatted into lightweight, high-fidelity WebP assets and delivered via globally distributed edge networks, ensuring instant display without redistributing raw stock originals.

Licensed Interactive Educational Use: PicRush incorporates images obtained under open licenses exclusively within an interactive picture-guessing game for vocabulary learning. PicRush does not operate a stock image marketplace, nor do we redistribute source images as standalone downloadable collections.

Image Provenance & Source-Removal Lifecycle

End-to-end metadata logging and proactive asset quarantine procedures

Step 01

Provenance & Metadata Logging

Upon asset curation, we record the upstream source platform, original image URL, creator profile URL, license name, and acquisition date into an internal provenance ledger.

Step 02

Periodic Source Availability Audits

We conduct routine verification checks against upstream provider catalogs to detect any retracted, disputed, or modified image assets.

Step 03

Proactive Asset Quarantine & Review

If an image is deleted or flagged on its source platform, or if an inquiry is received, PicRush proactively quarantines the asset from active game sessions pending review.

Step 04

Audit Trail Preservation

A permanent, minimal tombstone record of the retirement event is preserved in our internal logs for verification and compliance accountability.

Licensing & Dataset Questions

Frequently Asked Questions

Essential information regarding image sourcing, commercial usage rights, and dataset governance.

All pictures in PicRush are curated from leading open-access photography communities—Unsplash, Pexels, and Pixabay. We select high-quality photos that represent everyday objects, animals, food, nature, and landmarks to reinforce English vocabulary learning.