Scan to Searchable PDF
Convert scanned images into searchable PDFs using OCR directly in your browser. Free, secure, privacy-friendly, and no uploads required.
Drop scanned images here
Supports JPG, PNG, WEBP up to 20MB
About Scan to Searchable PDF
What is Scan to Searchable PDF? This tool allows you to convert physical documents, photos, and scanned image files into fully searchable, selectable PDF documents. What is OCR? Optical Character Recognition (OCR) is the technology that identifies letters and words inside an image. What makes a PDF searchable? A searchable PDF has an invisible layer of text perfectly aligned over the original image, allowing you to highlight, search, and copy the text as if it were typed. Why use searchable PDFs? Searchable PDFs are essential for digitizing records, making them accessible to screen readers, and enabling rapid text-based searches across thousands of documents.
How to Use
Real-World Examples
Scanning receipts
Upload photos of your receipts. The OCR engine will detect the text, and the final PDF will allow you to quickly search for vendor names and prices.
Scanning invoices
Digitize vendor invoices into searchable PDFs to seamlessly integrate them into your accounting workflow.
Scanning contracts
Convert signed multi-page contracts into a single searchable document, making it easy to find specific clauses later.
Scanning handwritten notes
While the OCR engine is optimized for printed text, very neat handwriting may be partially recognized. For best results, use printed documents.
Scanning books
Photograph book pages and compile them into a digital, searchable e-book for easy reference.
Best Practices
- High Resolution: Ensure your images are high quality (at least 300 DPI equivalent) for accurate OCR.
- Proper Lighting: Avoid shadows or glare when photographing documents.
- Clean Background: Crop out distracting backgrounds like tables or thumbs.
- Straight Documents: Deskew your images so the text lines are perfectly horizontal.
- Readable Fonts: Standard, printed fonts yield the highest OCR accuracy.
Frequently Asked Questions
What is OCR?
OCR stands for Optical Character Recognition. It's a technology that analyzes an image and translates the visual shapes of letters into actual, editable, and searchable digital text.
Is my document uploaded?
No. All processing, including the OCR and PDF generation, happens entirely locally within your web browser.
Can I scan multiple pages?
Yes, you can upload as many images as you need. They will be combined into a single, multi-page searchable PDF.
Can I search the exported PDF?
Yes! The exported PDF contains a transparent text layer embedded directly over the image, allowing you to use Ctrl+F / Cmd+F in any standard PDF reader.
Can I copy text?
Absolutely. You can highlight and copy text from the generated PDF just like a normal text document.
Can I scan receipts?
Yes, this tool is excellent for digitizing receipts for expense tracking.
Does it support handwritten text?
The OCR engine is primarily designed for machine-printed text. Handwritten text accuracy will be very low unless it is exceptionally neat block lettering.
Which languages are supported?
Currently, our local OCR engine supports standard English character sets, with basic support for common European characters.
Can I edit OCR text?
Yes! Our OCR Review Workspace allows you to manually correct any typos or misidentified words before the PDF is generated.
How accurate is OCR?
Accuracy depends heavily on image quality. A crisp, high-contrast, well-lit scan can achieve 99%+ accuracy. Blurry or shadowed images will drop significantly.
Can I use it offline?
Once the initial page and its background workers are loaded, the entire tool runs offline in your browser.
Why is OCR inaccurate?
Inaccuracies usually stem from low resolution, poor lighting, curved pages, unusual fonts, or complex backgrounds interfering with letter detection.
Can I scan photographs?
Yes, you can scan photographs of documents. However, scanning general photographs without text will yield no OCR results.
Is there a file size limit?
While there is no hard upload limit since no files are sent to a server, we recommend keeping individual images under 20MB to prevent your browser from crashing due to memory exhaustion.
Does ToolMono store my files?
No. ToolMono does not have a backend server for processing files. Everything stays on your local device.
What is an invisible text layer?
An invisible text layer is exactly what it sounds like: digital text rendered with 0% opacity perfectly aligned over the image of the text, tricking your PDF reader into letting you highlight the image.
Can I extract just the text?
Yes, the export screen provides an option to download the raw OCR text as a .txt file without generating a PDF.
Can I extract the bounding boxes?
Yes, developers can download the raw JSON output containing the exact coordinates and confidence scores for every detected word.
Is this tool free?
Yes, Scan to Searchable PDF is completely free to use with no hidden fees or watermarks.
Does this work on mobile devices?
Yes, the tool is fully responsive. You can use your phone's camera to take pictures of documents and process them directly in Safari or Chrome.
Security & Privacy
Privacy is guaranteed. 100% of the image processing, OCR, and PDF generation occurs locally in your browser using WebAssembly. No documents, images, or extracted text ever leave your device.