How it works
Complete the job in three clear steps
- Choose a scanned PDF.
- Set the available options and create a searchable PDF.
- Review the result before downloading or relying on it.
Private Lucaden pdf tools tool
Searchable PDF OCR
Recognize text on scanned PDF pages and add a transparent searchable text layer locally.
Free to use Your source content is processed in this browser and is not uploaded to Lucaden.
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Important
Check the result before relying on it
Keep an untouched copy of important source files. Browser processing depends on available device memory, and you should inspect every downloaded result before deleting the original.
Practical details
What this Lucaden tool does
PDF.js renders each selected page, Tesseract.js recognizes word positions, and pdf-lib writes an invisible text layer over the unchanged page image. OCR is approximate and must be reviewed.
The original remains unchanged; Lucaden creates a separate result in browser memory.
Included capabilities
- Local page rendering
- English printed-text OCR
- Transparent text layer
- Confidence and word report
Useful for
- Search a scanned contract
- Copy text from an archive
- Improve document discovery
- Prepare a scan for indexing
Questions
About this tool
Does OCR change the visible scan?
No. Lucaden keeps the original page appearance and adds transparent selectable text.
Is recognized text guaranteed accurate?
No. Review names, numbers, tables, handwriting, and low-quality scans carefully.
Open-source foundations
Built transparently
Lucaden documents its standards sources, architectural references, and permissive runtime dependencies while keeping this workspace consistent with the Lucaden interface.