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Mearman merged 3 commits into from
Sep 3, 2026
Merged

feat(ppt-codec): write real MS-PPT presentations #877

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refactor(ppt-codec): move record byte builders into a production module
Mearman Sep 3, 2026
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feat(ppt-codec): write real MS-PPT presentations
Mearman Sep 3, 2026
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docs(ppt-codec): describe the write path and its scope
Mearman Sep 3, 2026
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30 changes: 15 additions & 15 deletions README.md
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Expand Up @@ -31,24 +31,24 @@ The packages layer from foundation up to user-facing interfaces. Each depends on

Each converts one document format to and from the shared schema, built on `document-schema.js`:

| Package | Formats |
| ----------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [`ooxml.js`](packages/ooxml.js/README.md) | OOXML packages (docx, pptx, xlsx) to and from JSON. |
| [`odf.js`](packages/odf.js/README.md) | OpenDocument packages (odt, ods, odp) to and from JSON, plus read-only support for the pre-OASIS OpenOffice.org 1.x documents ODF was based on (sxw, sxc, sxi, sxd). |
| [`markdown-codec`](packages/markdown-codec/README.md) | CommonMark+GFM to and from the shared content schema. |
| [`pdf-codec`](packages/pdf-codec/README.md) | Parses arbitrary real-world PDFs and generates new ones, also depending on `byte-codec`. |
| [`epub-codec`](packages/epub-codec/README.md) | Flowable EPUB 2/3 to and from the shared content schema; writes EPUB 3 only. |
| [`rtf-codec`](packages/rtf-codec/README.md) | Rich Text Format to and from the shared content schema; hand-written tokenizer, destination state machine, and header-table parsers, since RTF is tokenised text rather than XML. |
| [`wpd-codec`](packages/wpd-codec/README.md) | WordPerfect 6.x-X6 (`.wpd`) to the shared content schema; read-only, and under active development. |
| [`doc-codec`](packages/doc-codec/README.md) | The pre-2007 Word Binary File Format (`.doc`, [MS-DOC]) to the shared content schema, also depending on `archive-codec` for its [MS-CFB] container. Read-only so far. |
| [`xls-codec`](packages/xls-codec/README.md) | Legacy Excel Binary File Format (`.xls`, BIFF8) to the shared content schema; read-only. |
| [`ppt-codec`](packages/ppt-codec/README.md) | PowerPoint 97-2003 binary presentations (`.ppt`, [MS-PPT]) to the shared content schema; read only, and under active development. |
| Package | Formats |
| ----------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [`ooxml.js`](packages/ooxml.js/README.md) | OOXML packages (docx, pptx, xlsx) to and from JSON. |
| [`odf.js`](packages/odf.js/README.md) | OpenDocument packages (odt, ods, odp) to and from JSON, plus read-only support for the pre-OASIS OpenOffice.org 1.x documents ODF was based on (sxw, sxc, sxi, sxd). |
| [`markdown-codec`](packages/markdown-codec/README.md) | CommonMark+GFM to and from the shared content schema. |
| [`pdf-codec`](packages/pdf-codec/README.md) | Parses arbitrary real-world PDFs and generates new ones, also depending on `byte-codec`. |
| [`epub-codec`](packages/epub-codec/README.md) | Flowable EPUB 2/3 to and from the shared content schema; writes EPUB 3 only. |
| [`rtf-codec`](packages/rtf-codec/README.md) | Rich Text Format to and from the shared content schema; hand-written tokenizer, destination state machine, and header-table parsers, since RTF is tokenised text rather than XML. |
| [`wpd-codec`](packages/wpd-codec/README.md) | WordPerfect 6.x-X6 (`.wpd`) to the shared content schema; read-only, and under active development. |
| [`doc-codec`](packages/doc-codec/README.md) | The pre-2007 Word Binary File Format (`.doc`, [MS-DOC]) to the shared content schema, also depending on `archive-codec` for its [MS-CFB] container. Read-only so far. |
| [`xls-codec`](packages/xls-codec/README.md) | Legacy Excel Binary File Format (`.xls`, BIFF8) to the shared content schema; read-only. |
| [`ppt-codec`](packages/ppt-codec/README.md) | PowerPoint 97-2003 binary presentations (`.ppt`, [MS-PPT]) to and from the shared content schema, also depending on `archive-codec` for its [MS-CFB] container; the write side covers plain text-box slides only, and both directions remain under active development. |

### Conversion engine

| Package | What it is |
| ------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [`documents.js`](packages/documents.js/README.md) | Bidirectional docx/pptx to and from PDF conversion, and a read+write editable OOXML document model, built on `ooxml.js` and depending on every write-capable codec above plus `wpd-codec` as a read-only conversion source (routable everywhere but never a target, since wpd-codec ships no writer). `doc-codec`/`xls-codec`/`ppt-codec` remain unwired: they are read-only too, but nothing yet routes them the way `wpd-codec` now is. |
| Package | What it is |
| ------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [`documents.js`](packages/documents.js/README.md) | Bidirectional docx/pptx to and from PDF conversion, and a read+write editable OOXML document model, built on `ooxml.js` and depending on every write-capable codec above plus `wpd-codec` as a read-only conversion source (routable everywhere but never a target, since wpd-codec ships no writer). `doc-codec`/`xls-codec`/`ppt-codec` remain unwired: nothing yet routes any of them the way `wpd-codec` now is, regardless of which of the three have gained their own write path. |

### Interfaces

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