Credit where it belongs

Built with open work.
Illustrated with licensed photos.

The original authors and photographers retain their rights. Their work does not imply an endorsement of Backdropless.

Example photographs

These images use the Pexels License, which permits commercial use and modification. Originals were resized for the site. Reference after images are actual app outputs, encoded as lossless WebP. The home-page cutout uses a smaller delivery encoding with the same alpha mask.

Example image attribution
ExamplePhotographerSource
productWallace ChuckOriginal photograph ↗
personVikesh zenOriginal photograph ↗
petBarnabas DavotiOriginal photograph ↗
hairVitor DinizOriginal photograph ↗
glassChristopher Welsch LeveroniOriginal photograph ↗

Background-removal model

U2-Net by Xuebin Qin and collaborators uses Apache-2.0 terms. The browser downloads the portable U2netp ONNX conversion from the pinned edgetools Hugging Face repository. See upstream code and model, the model card and the license text. This application adds local preprocessing, mask editing and image composition.

High detail uses Studio Ludens’ BiRefNet-lite 512 ONNX export, derived from ZhengPeng7/BiRefNet_lite. Its model weights and conversion are MIT licensed. The pinned fp32 file is 191,877,254 bytes and is verified before local inference. MIT notice for the original model and export. Input is 512 × 512; this is not the original 1024-pixel export.

Runtime code and fonts

Facts and original graphics

Platform and government specifications are independently transcribed facts with source links. We do not copy their example photographs, logos or complete tables. Diagrams, chart layouts, the wordmark and the checkerboard interface were created for this site. Local measurements are published with methods so they can be interpreted in context.

Original license and source review: October 29, 2026. New fonts and BiRefNet export checked October 30, 2026. The repository’s LICENCES.md records implementation dependencies and the reasons certain model or decoder packages were excluded.