Traditional-to-Simplified conversion is the other everyday direction: a Taiwan or Hong Kong source needs a mainland China or Singapore edition. A church bulletin, a product manual, or a scanned family letter in Traditional characters may need to be read by people who were schooled only in Simplified Chinese.
This direction looks easier than Simplified-to-Traditional because many mappings collapse. 國 becomes 国. 書 becomes 书. Several Traditional distinctions disappear into one Simplified shape. That collapse is convenient for readers in Simplified regions. It is also why you should not treat conversion as a reversible archive. If you convert to Simplified and later convert back, you may not recover the original Traditional file.
Why this direction still needs care
Stroke-simplified forms replace many characters, and that part is mechanical. The harder part is knowing what the source already is.
Taiwan Traditional and Hong Kong Traditional are not identical. A file from Taipei may already use 裡 where a Hong Kong file prefers 裏. Vocabulary differs too: software terms, station names, and office titles. OpenCC includes source-aware types so the dictionary can start from the right variant. If you know the file is Taiwan Chinese, pick a Taiwan source type. If you know it is Hong Kong Chinese, pick the Hong Kong source type. Details are in OpenCC conversion types.
Phrase tables in this direction can replace some Taiwan or Hong Kong wording with more common mainland wording. That can help a user interface. It will not rewrite a legal notice, and it will not turn written Cantonese into Beijing editorial style. If the source is heavily local, conversion is only the first step.
Classical quotations, temple names and personal names may already mix older forms. A converter will still apply modern Simplified mappings. That can be correct for a school handout and wrong for a scholarly edition that wanted the quotation left alone. Mark those passages before you convert the whole file.
Choose the source variant if you know it
OpenCC types you will see on this site include:
- Traditional to Simplified, when you only know the file is Traditional
- Traditional (Taiwan) to Simplified
- Traditional (Taiwan) to Simplified with phrases
- Traditional (Hong Kong) to Simplified
- Traditional to Traditional (Taiwan) or Traditional to Traditional (Hong Kong), when you need to normalize Traditional first rather than simplify
Normalizing Traditional toward one region is a different job from simplifying. Do not pick a Taiwan-to-Simplified type if you actually wanted Hong Kong Traditional to stay Traditional.
If the file mixes Japanese shinjitai or Korean hanja, those strings are not safe OpenCC input. Convert only the Chinese portions. Common conversion problems explains why mixed CJK text goes wrong.
Tools
- Text converter for passages, emails, captions and strings
- Document converter for Word, Excel, PowerPoint, PDF and TXT
Keep formatting inside the office file when you can. Pasting through a plain box strips styles. PDFs only convert when the Chinese is real text, not a photograph of a page.
What you should review
Skim technical terms and names. Look at headings, figure captions and table headers, because those are what readers notice first. Check any string that is also a brand: a converter may change a character inside a name that marketing wanted left alone.
Also check numbers, dates and mixed English. Conversion should leave COVID-19, product codes and Latin trademarks alone. If a font in the Simplified output lacks a glyph, you will see boxes. That is a font problem, not proof that the character mapping failed.
For important files, follow the proofreading checklist. Keep the Traditional original. The Simplified file is a new edition, not a replacement archive.
Frequently asked questions
Is Traditional-to-Simplified more accurate than the other direction? It is often more regular, because many distinctions collapse. It is not lossless, and names can still surprise you.
Will converting to Simplified make the text sound like mainland Chinese? Only at the character level, and only partly at the word level if you use phrase tables. Tone and rhetoric stay with the author.
Can I use this to prepare a file for mainland printing? Yes, as a character pass. A printer may still require a specific font, hyphenation rules, or a human copy-edit.
What if the Traditional file already contains some Simplified characters? The converter will process what it recognizes. Mixed files are common in chat exports. Spot-check the output instead of assuming a clean source.
Should I convert Japanese text in the same document? No. Leave Japanese to a Japanese-aware process, or extract the Chinese parts first.