Open-source licenses

Engyna is built on excellent open-source software. Each project is used unmodified under its own license; the links lead to the source code and full license texts.

libheif is licensed under the GNU LGPL 3.0. It is loaded as a separate, replaceable module and only when you convert a HEIC file. Its complete source code is available from the libheif repository linked below.

Software

• ReactUser interfaceMIT
• React RouterRouting and prerenderingMIT
• Tailwind CSSStylingMIT
• LucideIconsISC
• MediabunnyVideo and audio reading, writing and conversion, including its MP3, FLAC and AAC encoder extensionsMPL-2.0
• libheif (via libheif-js and heic-decode)Decoding HEIC photos. The unmodified library is loaded as a separate module only when a HEIC file is converted.LGPL-3.0 (libheif), ISC (heic-decode)
• jSquash AVIF (libavif)AVIF encodingApache-2.0 (jSquash), BSD-2-Clause (libavif)
• PDF.jsRendering and reading PDFsApache-2.0
• pdf-lib (Cantoo fork)Creating and editing PDFsMIT
• MermaidDiagram renderingMIT
• fflateZIP files and compressionMIT
• gifencGIF encodingMIT
• gifuct-jsGIF decodingMIT
• UTIF2TIFF imagesMIT
• woff2-encoder (Google WOFF2)WOFF2 font compressionMIT
• markedMarkdownMIT
• TurndownHTML to MarkdownMIT
• MammothWord documentsBSD-2-Clause
• yamlYAMLISC
• smol-tomlTOMLBSD-3-Clause
• fast-xml-parserXMLMIT
• read-excel-file / write-excel-fileExcel spreadsheetsMIT
• CodeMirrorCode editor, syntax highlighting and folding in the viewersMIT
• jsonc-parserJSON validation with exact error positionsMIT
• node-sql-parserSQL syntax checkingApache-2.0
• sql-formatterSQL formattingMIT
• three.js3D model viewing and loadersMIT
• DracoDecoding compressed 3D meshesApache-2.0
• fontkitReading fonts (TTF, OTF, WOFF, WOFF2), including brotli, restructure and unicode-properties (MIT)MIT
• Papa ParseCSV and TSV parsingMIT
• PeculiarVentures ASN.1 and asn1jsDecoding certificates and signing requestsMIT (asn1-*), BSD-3-Clause (asn1js)
• zxcvbn-tsPassword strength estimationMIT
• hash-wasmArgon2id key derivation and MD5, SHA-3, BLAKE3 and CRC32 checksumsMIT
• jsQRReading QR codes from imagesApache-2.0
• math.jsExpression parsing, derivatives and matrix mathApache-2.0
• htmlparser2Parsing HTML for the accessibility checkerMIT
• d3-scale, d3-shape, d3-hierarchyChart scales, shapes and tree layoutsISC
• world-atlas (Natural Earth data)World map outlinesISC (package), public domain (data)
• topojson-clientReading the world map dataISC
• jsdiffText comparisonBSD-3-Clause
• node-qrcodeQR codesMIT
• JsBarcodeBarcodesMIT
• FakerFake test dataMIT

Fonts

• Plus Jakarta SansInterface fontSIL Open Font License 1.1
• Space GroteskDisplay font in toolsSIL Open Font License 1.1
• Playfair DisplayDisplay font in toolsSIL Open Font License 1.1
• Bebas NeueDisplay font in toolsSIL Open Font License 1.1
• PacificoDisplay font in toolsSIL Open Font License 1.1
• MonotonDisplay font in toolsSIL Open Font License 1.1
• Press Start 2PDisplay font in toolsSIL Open Font License 1.1