Locket Press uses a few open-source libraries to open iPhone photos right in your browser. We use them unmodified. Each one is listed below with its license, and its source code is available at the link beside it.
Libraries
heic-to 1.5.2
opens iPhone photos (HEIC) in your browser. License: LGPL-3.0. Source: github.com/hoppergee/heic-to/tree/v1.5.2
libheif 1.22.2
Part of heic-to; reads the HEIC file format. License: LGPL-3.0. Source: github.com/strukturag/libheif/tree/v1.22.2
libde265 1.0.16
Part of heic-to; decodes the picture inside a HEIC file. License: LGPL-3.0. Source: github.com/strukturag/libde265/tree/v1.0.16
License texts
These libraries are licensed under the GNU Lesser General Public License, version 3, which builds on the GNU General Public License, version 3. Both full texts are linked here.
Last updated September 28, 2026.