Convert CELTX to PDF

A screenplay or production document may need to be sent to someone without Celtx, printed, submitted, or archived in a fixed layout. Converting it to PDF preserves pagination and makes the rendered document available on most operating systems.

What the CELTX format is

.celtx is the project format used by Celtx, a pre-production application for screenplays, stage plays, storyboards, shot lists, schedules, and related production documents. A CELTX file is a structured project file rather than a conventional word-processing document; depending on the Celtx version, it can contain multiple documents, metadata, notes, and references to project assets. Older desktop projects may require the Celtx version that created them or a compatible legacy version.

What the PDF format is

PDF is a fixed-layout document format supported by Adobe Acrobat Reader, web browsers, operating systems, and most printing systems. It preserves rendered text, page breaks, margins, page numbers, and graphics more reliably than an editable interchange format, but it does not preserve the editable Celtx project structure.

How to convert a CELTX file to PDF

Use Celtx whenever possible, because it understands the project structure and screenplay formatting.

1. Make a backup copy of the .celtx file before opening or migrating it.
2. Open the project in a Celtx desktop installation that supports the file, or import it into the appropriate Celtx web workspace. Use File → Open in desktop Celtx when that command is available.
3. Select the individual screenplay or production document to export. A project can contain several documents; exporting a script normally does not include schedules, notes, media, or other project sections.
4. Use the version's PDF command, commonly labelled File → Export → PDF, Export as PDF, or Share/Export. Celtx menus and export availability vary between legacy desktop releases and current web plans.
5. If direct PDF export is unavailable, use File → Print, then select Microsoft Print to PDF on Windows or Save as PDF in the macOS print dialog. Set the intended paper size, page range, and orientation before saving.
6. Open the resulting PDF and check the title page, scene headings, dialogue indentation, page numbers, margins, revision marks, and any production fields that must be included.

When Celtx cannot open the file

Do not rename .celtx to .pdf; changing a filename extension does not convert the file. Try the Celtx release associated with the project, obtain an export from the original author, or restore the project from a backup. Trelby and general document editors are not dependable CELTX converters, so opening the file in an unrelated application can lose project data and screenplay formatting.

Reputable online conversion services such as CloudConvert, Zamzar, and Online-Convert should be used only when they explicitly list CELTX support for the exact upload. Generic online converters generally support office formats and images, not Celtx project files, and may reject the upload or export only part of the project. For a confidential script, convert locally rather than uploading it; if an online service is used, review its retention and deletion policy first.

Quality and compatibility limits

The PDF contains a rendered document, not a round-trippable Celtx project. Linked images, attachments, comments, notes, schedules, databases, and other production information may be excluded unless exported separately. Fonts unavailable on the conversion system can be substituted, and print-to-PDF may change page breaks if paper size, margins, or printer settings differ from the screenplay template. Keep the original .celtx project alongside the PDF when future editing is required.