Open-source licences

• Next.jsMIT

  Application framework, routing, rendering and the build pipeline.

• React / React DOMMIT

  User interface rendering.

• Redux Toolkit / React ReduxMIT

  Client state for theme, recent tools and the admin data layer.

• react-icons (Lucide set)MIT (icons: ISC)

  Interface icons, tree-shaken to the ones actually used.

• pdf-libMIT

  Reading and writing PDF files in the browser - merge, split, rotate, watermark, metadata.

• pdf.js (pdfjs-dist)Apache-2.0

  Rendering PDF pages to images for the PDF-to-image tools.

• fflateMIT

  ZIP and GZIP compression and extraction, in the browser and on the server.

• PapaParseMIT

  CSV and TSV parsing, including malformed real-world files.

• js-yamlMIT

  YAML parsing and serialisation.

• fast-xml-parserMIT

  XML parsing, validation and building.

• smol-tomlBSD-3-Clause

  TOML parsing and serialisation.

• iniISC

  INI file parsing and serialisation.

• markedMIT

  Markdown to HTML conversion.

• DOMPurify (isomorphic-dompurify)Apache-2.0 / MPL-2.0

  Sanitising any HTML that is rendered back to the user.

• sql-formatterMIT

  SQL formatting and minification.

• hash-wasmMIT

  MD5, SHA-1/2/3, CRC32 and Argon2id - in the browser and on the server.

• exifrMIT

  Reading EXIF, IPTC and XMP metadata from images.

• zodMIT

  Validating every request body and query before it is used.

• nanoidMIT

  Unguessable identifiers for jobs and stored files.

• joseMIT

  Signing and verifying tokens used by the admin session.

• sharpApache-2.0

  Server-side image processing (libvips).

• ExcelJSMIT

  Reading and writing XLSX workbooks on the server.

• PrismaApache-2.0

  Database schema, migrations and typed queries.

• BullMQMIT

  Job queues for the heavy conversion workers.

• ioredisMIT

  Redis client for queues and distributed rate limiting.

• pinoMIT

  Structured logging with redaction.

• FFmpegLGPL-2.1+ (used as a separate executable)

  Audio and video conversion in the media worker.

• LibreOfficeMPL-2.0 (used as a separate executable)

  Office document conversion in the office worker.

• PopplerGPL-2.0 (used as a separate executable)

  PDF rasterising and text extraction in the PDF worker.

• GhostscriptAGPL-3.0 (used as a separate executable)

  PDF compression and pre-press conversion in the PDF worker.

• qpdfApache-2.0

  PDF structural repair, linearisation and encryption changes.

• Tailwind CSSMIT

  Styling system. Compiled at build time; no runtime cost.

FFmpeg, LibreOffice, Poppler and Ghostscript are executed as separate processes, never linked. Operators who redistribute the worker images must follow those projects’ own terms.

Every graphic on this site - the logo, the icons and the illustrations - is either drawn for the project or comes from the MIT/ISC-licensed icon set listed above. No stock photography, no third-party fonts and no competitor branding are used anywhere.