Vietnamese OCR — Extract Vietnamese Text from Images and PDFs
Trích xuất văn bản tiếng Việt từ hình ảnh và tài liệu quét
Free · No registration for images · AI-powered
Quick start:
Upload your Vietnamese image or PDF to FastOCR. AI-powered, free for images, no registration required.
Try Vietnamese OCR Free →Why Vietnamese OCR Is Challenging
- Recognizing stacked diacritics where tone marks appear above or below vowels that already have accent marks
- Handling six tone marks (sắc, huyền, hỏi, ngã, nặng) that are critical for meaning in Vietnamese
- Preserving the đ/Đ character (d with stroke) distinct from regular d/D
- Processing the full Vietnamese vowel set with diacritics: ă, â, ê, ô, ơ, ư and their toned variants
- Correctly rendering double-stacked marks like ầ, ẩ, ẫ, ậ where circumflex and tone mark combine
How to Extract Vietnamese Text (Step by Step)
- Go to fastocr.org
- Upload your Vietnamese image or PDF. Language is detected automatically.
- Wait for processing — images take seconds, PDFs show a progress bar.
- Download results: searchable PDF, raw text file, or copy text directly.
Tips for Better Vietnamese OCR Accuracy
- Scan at 300+ DPI — Vietnamese diacritics are small and easily lost in low-resolution images
- Verify tone marks after OCR — missing or wrong tones completely change word meaning in Vietnamese
- Check the đ character is preserved and not converted to a plain d
- For stacked diacritics (e.g., ầ, ổ, ữ), zoom in to verify both marks are correctly recognized
- Use clean, high-contrast scans to preserve the fine details of Vietnamese diacritical marks
Common Use Cases for Vietnamese OCR
- Digitizing Vietnamese legal documents, contracts, and notarial records
- Extracting text from Vietnamese government forms and identity documents
- Converting scanned Vietnamese academic papers and educational materials
- Processing Vietnamese business invoices and import/export documentation
- Archiving Vietnamese newspaper articles and literary publications
Frequently Asked Questions
Does Vietnamese OCR handle tone marks correctly?
Yes. FastOCR recognizes all six Vietnamese tone marks and stacked diacritics with 96% accuracy on clean printed text.
Can it handle the đ character?
Yes. FastOCR correctly distinguishes đ (d with stroke) from regular d, which is essential for Vietnamese text.
How accurate is Vietnamese OCR?
FastOCR achieves 96% accuracy on printed Vietnamese. Stacked diacritics on small text may occasionally be misread.
Is Vietnamese OCR free?
Image OCR is free with no registration. PDF processing requires a free account and includes 3 free PDFs per month.
Try Vietnamese OCR now
Upload a Vietnamese image or PDF and get extracted text in seconds. Free, no registration for images.
Try FastOCR Free →