Korean OCR — Image to Text & PDF
Korean OCR converts images, scans and PDFs containing Korean (한국어) text into editable, searchable digital text. FastOCR reads Korean online: upload an image with no account, or a PDF with a free account, then copy the text or download a searchable PDF. Accuracy depends on scan quality, so check the result against your original.
무료 온라인 한국어 OCR — 이미지에서 텍스트 추출
이미지와 스캔 문서에서 한국어 텍스트를 정확하게 추출하세요
Free · No registration for images · AI-powered
Drop your file here
PDF, PNG, JPG, WebP, BMP, HEIC
PDF up to 1 GB · images up to 20 MB
Tips for a clear photo
- Lay the page flat.
- Use even light, with no shadows.
- Turn off the flash to avoid glare.
- Fill the frame with the page.
What is Korean OCR & Developer API?
Developer API docs →Korean OCR is the automated process of converting scanned multi-page PDFs up to 1GB and documents into editable, searchable Korean text while preserving accents, complex ligatures, and native character shapes. FastOCR reads printed text in this script and generates full-text searchable PDFs with selectable text overlays. For engineering teams building RAG pipelines, vector search databases, or automated document ingestion, FastOCR also provides a Korean OCR REST API at api.fastocr.org with 50 free pages a month for every signed-in account. The API accepts PDF files up to 1 GiB, and PNG, JPG, JPEG, GIF, WebP and BMP images up to 20 MiB. An image counts as one page.
Hangul recognition
All Korean syllable blocks including complex jamo combinations.
Mixed Korean & English
Documents with both Korean and English handled in a single pass.
Signs & labels
Photograph Korean signs, product labels, menus, or packaging.
Documents & PDFs
Scanned Korean documents, contracts, and official papers.
Hanja support
Recognizes Chinese characters mixed with Hangul in formal documents.
Translate after extraction
Extract Korean text then translate to English or any language.
한국어 OCR이 왜 어려운가요?
- Recognizing Hangul syllable blocks which combine 2-3 jamo (consonants and vowels) into a single square character
- Handling mixed Korean text with occasional Hanja (Chinese characters) in formal and legal documents
- Distinguishing visually similar Hangul characters like ㅎ/ㅂ and 가/카 in small font sizes
- Processing Korean text with English loanwords written in both Hangul and Latin script
- Correctly interpreting spacing in Korean which uses spaces between words unlike Japanese or Chinese
PDF와 이미지에서 한국어 텍스트를 추출하는 방법
- Go to fastocr.org
- 한국어 이미지 또는 PDF를 업로드하세요. 언어가 자동으로 감지됩니다.
- 처리를 기다리세요 — 이미지는 몇 초, PDF는 진행 막대가 표시됩니다.
- 결과 다운로드: 검색 가능한 PDF, 텍스트 파일, 또는 텍스트를 직접 복사합니다.
더 나은 한국어 OCR 정확도를 위한 팁
- Use 300 DPI scans to preserve the fine details within Hangul syllable blocks
- For documents with Hanja, verify Chinese character recognition alongside Hangul text
- Check for correct spacing — Korean uses spaces between words and OCR may merge or split them incorrectly
- Review similar-looking jamo pairs like ㄱ/ㅋ, ㄷ/ㅌ, ㅂ/ㅍ which are common OCR confusion points
- Straighten skewed scans to avoid misalignment of the square Hangul character grid
한국어 OCR의 일반적인 사용 사례
- Digitizing Korean legal documents, contracts, and court records
- Extracting text from Korean corporate filings and financial reports
- Converting scanned Korean academic papers and research publications
- Processing Korean government forms, ID documents, and certificates
- Archiving Korean historical texts that mix Hangul with Hanja characters
FastOCR vs Standard OCR Apps for Korean
| Capability | FastOCR Dedicated Cloud AI | Standard Online OCR Tools |
|---|---|---|
| Korean Script Recognition | ✅ Full native cloud recognition for Korean (complex alphabets and diacritics) | Limited character sets or unhandled accents |
| Multi-Column & Table Layouts | ✅ Preserves proper paragraph and table alignment | Merges unrelated columns together |
| Searchable PDF/A Output | ✅ Dual-layer searchable PDF with coordinate-aligned text overlay | Plain unformatted text dump only or unsupported |
| Instant Web Access | ✅ Zero software installation (runs in mobile & desktop browser) | Requires local CLI libraries or complex desktop setup |
자주 묻는 질문
How accurate is Korean OCR on Hangul text?
FastOCR reads printed Korean Hangul text. Accuracy may be lower on stylized fonts or very small text sizes.
Does Korean OCR support Hanja characters?
Yes. FastOCR recognizes Hanja (Chinese characters) mixed with Hangul, which is common in Korean legal and academic documents.
Can I extract Korean text from a photo?
Yes. Upload the photo directly. For best results, ensure good lighting and that the Korean text is in focus and not skewed.
Is Korean OCR free?
Image OCR is free with no registration. PDF processing requires a free account — see fastocr.org/pricing for plan details.
Dedicated Korean Tools
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All supported languages
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Explore Specialized OCR Workflows
FastOCR provides dedicated AI text recognition engines optimized for complex document types and formats:
Free for images. No registration required.
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Upload & Extract TextLast updated: July 24, 2026