Photo Contribution Guidelines

1. What to Upload

• clear daffodil photos you took yourself;
• photos associated with the correct daffodil record;
• front, side, angled/oblique, clump, or useful reference views;
• JPEG, PNG, or WebP images under 8 MB.

2. What Not to Upload

• photos you do not own or do not have permission to license;
• images copied from vendor sites, catalogs, books, social media, search engines, or other databases without permission;
• photos with visible watermarks, logos, promotional text, signatures, date stamps, decorative borders, or embedded branding;
• non-daffodil images;
• images with people, private addresses, license plates, or sensitive location details;
• spam, promotional graphics, malware, misleading files, or intentionally mislabeled cultivar images.

3. Rights and Permission

Only upload photos you took yourself or have permission to license. Do not upload a photo just because it is online. Do not upload nursery/vendor catalog images unless you have explicit permission to grant the exact CC0 1.0 or CC BY 4.0 rights shown for your upload.

4. CC0 1.0 or CC BY 4.0

If you have no display name, the upload offer is CC0 1.0. CC0 is a public-domain dedication and fallback license, to the extent legally possible, and does not require attribution. If you have a display name, the upload offer is CC BY 4.0, which permits broad reuse, including commercially, with appropriate attribution. Others may copy, share, adapt, and use the photo, including commercially, as long as they provide attribution required by the license. Both choices are intended to be irrevocable for copies already shared. Uploading does not waive privacy, publicity, trademark, or other third-party rights. Daff App may review requests to remove, replace, or unpublish your photo, but publication does not give you an automatic right to delete copies already published on Daff App or reused by others.

5. Attribution and Future Defaults

CC BY 4.0 photos are attributed using the display name snapshotted at upload. CC0 1.0 photos have no required public creator attribution, although Daff App privately retains the uploader-account relationship. Your email is never used as public attribution. Adding, changing, or clearing a display name changes future upload offers only and does not automatically relicense or rename existing photos.

6. Review Process

Uploads are pending until reviewed, and publication is not guaranteed. Review may be human, automated, AI-assisted, or a combination. Daff App may classify photos by subject, view, confidence, and suitability, and may reject photos that are unclear, infringing, non-daffodil, duplicated, misleading, watermarked, branded, low-quality, privacy-sensitive, or otherwise unsuitable.

Even if you own the photo or have permission to license it, Daff App may reject visible watermarks, logos, promotional text, signatures, date stamps, decorative borders, or embedded branding. If you want CC BY credit, use your optional Daff App display name instead of marking the image itself.

7. Privacy Tips

• avoid uploading photos with people or private locations;
• remove sensitive metadata before upload if concerned;
• do not rely on Daff App to remove all metadata;
• private originals may be retained for service operation, review, moderation, and legal/audit needs.

8. Photo Requests

You may contact Daff App to withdraw a pending upload before it is accepted and published. After publication, you may request correction, replacement, removal, unpublishing, or removal of attribution information. Daff App will review these requests, but unless action is legally required, Daff App may decide whether to remove, hide, unpublish, retain, replace, continue displaying, or modify attribution for the content.

Submitting a better photo does not guarantee removal of an earlier published photo. Removal, replacement, unpublishing, or attribution changes do not revoke CC0 1.0 or CC BY 4.0 rights already granted to Daff App or to the public. Contact support@daff.app or privacy@daff.app.