The tools

Each tool's command is its address on the site, its SDK function is family.name(), and its MCP tool has the same name as the command. The options are the flags (--target) and the SDK's option names (target). Preset pages from the site work as commands too.

PDF

Command	SDK	Options
`merge-pdf`	`pdf.merge()`	`bookmarks` `keep-info` `title` `password`
`split-pdf`	`pdf.split()`	`ranges` `every` `max-size` `password`
`compress-pdf`+8 presets	`pdf.compress()`	`level` `target` `dpi` `quality` `grayscale` `strip-metadata` `password`
`protect-pdf`	`pdf.protect()`	`password` `owner-password` `print` `copy` `edit` `comment` `forms`
`unlock-pdf`	`pdf.unlock()`	`password`
`organize-pdf`	`pdf.organize()`	`order` `rotate` `rotate-pages` `remove` `password`
`add-page-numbers-to-pdf`	`pdf.addPageNumbers()`	`format` `position` `start` `pages` `skip-first` `size` `margin` `color` `font` `bold` `password`
`watermark-pdf`	`pdf.watermark()`	`text` `opacity` `angle` `position` `size` `color` `font` `bold` `margin` `under` `pages` `password`
`jpg-to-pdf`+1 presets	`pdf.fromImages()`	`page-size` `orientation` `margin` `placement`
`pdf-to-text`	`pdf.toText()`	`format` `markers` `join` `pages` `password`
`pdf-to-jpg`needs @napi-rs/canvas+1 presets	`pdf.toImages()`	`format` `dpi` `quality` `pages` `password`
`extract-images-from-pdf`	`pdf.extractImages()`	`min-size` `password`

Images

Command	SDK	Options
`image-converter`+14 presets	`image.convert()`	`to` `quality` `lossless` `background`
`image-compressor`	`image.compress()`	`quality` `target` `format` `max-side` `never-bigger`
`image-resizer`+9 presets	`image.resize()`	`width` `height` `mode` `percent` `enlarge` `target` `format` `quality`
`crop-image`	`image.crop()`	`aspect` `x` `y` `width` `height` `format` `quality`
`rotate-image`	`image.rotate()`	`by` `flip` `format` `quality`
`exif-remover`	`image.stripMetadata()`	`keep-orientation` `keep-color-profile`

Files

Command	SDK	Options
`zip-files`	`files.zip()`	`level` `name`
`unzip-files`	`files.unzip()`	`max-total` `max-entries`
`checksum-calculator`	`files.checksum()`	`algorithms` `expected`
`file-info`	`files.info()`	`password`

Video and audio

Command	SDK	Options
`video-compressor`needs ffmpeg+4 presets	`media.compress()`	`target` `quality` `resolution` `fps` `remove-audio`
`video-converter`needs ffmpeg+5 presets	`media.convert()`	`to` `quality`
`trim-video`needs ffmpeg	`media.trim()`	`start` `end` `copy`
`mute-video`needs ffmpeg	`media.mute()`
`video-to-gif`needs ffmpeg	`media.toGif()`	`start` `end` `width` `fps` `loop`
`video-to-mp3`needs ffmpeg	`media.toAudio()`	`format` `bitrate`
`audio-converter`needs ffmpeg+5 presets	`media.convertAudio()`	`to` `bitrate`

npx roundertools help <command> explains every option, with its default. The MCP server'sdescribe-tool returns the same as JSON Schema.