OCR PDF (Scan → Searchable)
Make your scanned PDFs searchable and selectable in seconds. This tool renders each page as an image, runs Tesseract.js OCR in your browser, and rebuilds the file with an invisible text layer using pdf-lib. No uploads, no servers—everything happens locally for maximum privacy.
Why create a Searchable PDF?
- Search inside PDFs: Use Ctrl/Cmd+F to find words across pages.
- Select & copy text: Copy recognized text from scanned pages.
- Better archiving: Desktop search and DMS can index the content.
Key Features
- Client-side OCR: Tesseract.js runs fully in your browser (privacy-friendly).
- Multi-language: Recognize English plus Indian and global languages; select multiple (e.g.,
eng+hin). - Auto-rotate / deskew: Orientation detection (OSD) corrects sideways scans.
- Clean text layer: Choose per-line or per-word placement for better selection.
- Plain-text export: Preview OCR text and download as
.txt. - Adjustable DPI: Higher render scale improves accuracy on faint scans.
How to Use
- Drop a scanned PDF or click to browse.
- Select OCR languages (you can pick multiple).
- (Optional) Enable Auto-rotate/deskew and choose Lines or Words placement.
- Click Run OCR & Build Searchable PDF.
- When finished, Download Searchable PDF or Open Preview. You can also Copy or Download .txt from the OCR Text panel.
Accuracy Tips
- Use High/Ultra DPI for low-contrast or small text (slower but more accurate).
- Pick the correct language(s) for mixed-language documents.
- Keep Lightweight text enabled for smaller output PDFs.
Limitations
- OCR quality relies on scan quality; heavy noise or skew lowers accuracy.
- Visual layout (tables, complex math) is not reconstructed; only text is layered for search/selection.
Privacy
All processing happens in your browser. Your files never leave your device.