File extensions
What is this file · what opens it · by category
파일 확장자표
확장자가 무슨 파일이고 무엇으로 여는지 찾아봅니다. 이미지·문서·압축·코드 등
52개 · 확장자가 무엇이고 무엇으로 여는지 정리했습니다.
A table of what a file extension is and what opens it. Split into images, documents, archives, video, code, executables and more.
How to use it
- Search by extension or by what you want to do
- Narrow it down with the category chips
- Read how to open it in the description
Common questions
- Does renaming the extension change the file format?
- No. Only the label changes; the contents stay as they were. Renaming a jpg to png leaves it a jpg, and some programs will refuse to open it. Use a converter instead.
- Is it safe to open a file I do not recognise?
- Anything executable — exe, apk, sh, ps1 — should not be opened when you do not know where it came from. Documents and images are usually safe, though older formats can carry vulnerabilities.
- My CSV opens with broken characters in Excel.
- The file’s encoding and the one Excel assumes do not match. Open it through Excel’s data-import step and choose UTF-8 there.
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