Translate a slide deck without rebuilding every text box

Translating a PowerPoint by copying each text box into a translator, then pasting it back, breaks line breaks, overflows shapes, and drops speaker notes. A PDF is worse when the page is really a picture of text.

This is the pass I use with TransMonkey, which translates documents, images, and video and tries to keep the file's structure. I work on this product. This post was generated with AI assistance.

What you need

• The source file: a PPT, a PDF, or a short video
• The target language, including the variety if it matters (Brazilian Portuguese is not European Portuguese)
• The original file left untouched, so you can compare

Steps

1. Translate the deck as a document first, not as screenshots of the slides. A document pass can keep slides, text boxes, and notes together. Use an image pass only when the PDF is a scan and there is no text layer.
2. Open the result beside the source and check every slide for three failures: text longer than the shape, a term that should have stayed in the source language (product names, code, API identifiers), and a speaker note that was translated when it was only for you.
3. If text overflows, shorten the source sentence and run the translation again. Fixing twenty overflowed boxes by hand in the target language is slower, and you will miss one.
4. For a scan or a screenshot of a UI, use image translation and then read every label at 100% zoom. OCR plus translation will invent a button name that was never on the screen.
5. For a demo or talking-head video, review the captions before you trust a dubbed track. Listen for names and numbers. If a number changed, redo that segment. Do not publish dubbing you have not listened to.
6. Export, and keep source and target in the same folder with the language in the filename.

What tends to go wrong

• Translating a screenshot of a slide instead of the PPT, then wondering why the text cannot be edited.
• Leaving code comments and UI strings in the same job with no do-not-translate list.
• Checking only the title slide. Overflow usually shows up on the dense slides near the end.

A clean structural translation is a draft. The review pass above is the actual work, and it is still faster than rebuilding the deck by hand.