Open-Source Licenses

Updated 2026-10-15

CircleCrop opens, crops and saves your photo in your browser with the help of open-source software. Each component below is used under its license; the link opens the full notice.

Components that run in your browser

• jSquash JPEG (MozJPEG)

  @jsquash/jpeg 1.6.0 · Apache-2.0; MozJPEG under the IJG and BSD-3-Clause licenses

  Encodes the JPEG file you download.

  Read the license

• jSquash WebP (libwebp)

  @jsquash/webp 1.5.0 · Apache-2.0; libwebp under BSD-3-Clause

  Encodes the WebP file you download.

  Read the license

• jSquash OxiPNG

  @jsquash/oxipng 2.3.0 · Apache-2.0; OxiPNG under MIT

  Makes the PNG file you download smaller without changing a pixel.

  Read the license

• wasm-feature-detect

  wasm-feature-detect 1.9.0 · Apache-2.0

  Checks which WebAssembly features your browser has.

  Read the license

• fast-png

  fast-png 8.0.0 · MIT

  Reads and writes PNG data the browser cannot.

  Read the license

• fflate

  fflate 0.8.3 · MIT

  Compression used by the PNG reader.

  Read the license

• iobuffer

  iobuffer 6.0.1 · MIT

  Byte reading used by the PNG reader.

  Read the license

• jxl-oxide

  jxl-oxide-wasm 0.12.6 · MIT or Apache-2.0

  Opens JPEG XL photos.

  Read the license

• Cornerstone codec: libjpeg-turbo

  @cornerstonejs/codec-libjpeg-turbo-8bit 1.2.8 · ISC (package), MIT (repository); libjpeg-turbo under the IJG, BSD-3-Clause and zlib licenses

  Opens JPEG files your browser cannot decode itself.

  Read the license

• Cornerstone codec: OpenJPEG

  @cornerstonejs/codec-openjpeg 1.3.6 · MIT; OpenJPEG under BSD-2-Clause

  Opens JPEG 2000 photos.

  Read the license

• heic-to (libheif, libde265)

  heic-to 1.6.6 · LGPL-3.0

  Opens HEIC and HEIF photos, such as those from an iPhone.

  Read the license

• Lucide icon (pipette)

  lucide · ISC

  The eyedropper icon in the editor.

  Read the license

libheif and libde265 (LGPL-3.0)

HEIC and HEIF photos are opened by libheif and libde265 through heic-to, under the GNU Lesser General Public License version 3. They run in a separate worker file that you can replace with your own build. The complete corresponding source, with its notices and licenses, is published here: libheif-source-1.23.6.tar.xz.

Questions

Write to support@circlecrop.app with "Licenses" in the subject.