Image OCR
TextExtract text from images with Tesseract.js in 60+ languages including Chinese and Japanese. Select a region to improve accuracy, then copy the text out.
Drop image or click to upload
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About Image OCR
This image OCR tool uses Tesseract.js to extract text from images locally in your browser, so photos and documents never leave your device — ideal for sensitive files like ID scans. Tesseract.js is a WebAssembly port of Google Tesseract, supporting over 60 languages (Simplified Chinese, Traditional Chinese, English, Japanese, Korean and more), with language packs downloaded on demand from a CDN and cached in IndexedDB. Recognition uses an LSTM neural network for text-line detection, character segmentation and semantic inference, and can report confidence scores and per-character bounding boxes. Realistic expectations matter: clean, upright, high-contrast printed screenshots typically extract at over 90% accuracy, while slanted, low-light or glossy photos degrade noticeably. Chinese in particular has a huge character set, so the occasional wrong character is normal and key fields deserve a human review pass. First use of a language takes longer because the data pack is fetched once, after which recognition speeds up markedly.
How to Use
- Open the Image OCR tool
- Paste the text to process
- Adjust the output options as needed
- Click the Process button; results appear in real time
- Copy or export the result
Use Cases
- Screenshot text extraction — Extract button text or error messages from software UI screenshots for searching solutions or recording issues.
- Scan digitization — Convert scanned paper document images to editable text, replacing manual data entry for efficiency.
- ID card information — Extract text from ID card, passport and other credential photos for form auto-fill, then verify key fields.
- Image translation prep — Extract text from foreign-language images and paste into translation tools for image content translation.
- Table image to text — Extract text content from table screenshots or photos, converting to editable plain text for cleanup.
FAQ
What languages are supported?
Over 60 languages including Simplified Chinese, Traditional Chinese, English, Japanese, Korean, French and German. Language packs load on demand from the CDN and cache locally.
What is the recognition accuracy?
Over 90% for clear screenshots and scans. Photos are affected by lighting, angle and blur. Use high-resolution, evenly lit images for the best results.
Can it handle mixed Chinese and English?
Yes. Select both Chinese and English language packs for mixed recognition. Obscure or joined characters may still err, so review key info.
Is slow first-time loading normal?
Yes. The first use of a language downloads its data pack (about 10-15MB) from the CDN, cached in IndexedDB for subsequent use without re-downloading.
Can it recognize handwriting?
Handwriting recognition accuracy is low; Tesseract is optimized for printed text. Use dedicated handwriting recognition tools for handwriting.
Are images uploaded?
No. All OCR runs locally in your browser via Tesseract.js on WebAssembly, so your images never leave your device, even sensitive documents.