Point your camera vertically at your document
Drag the 4 corner pins to outline the physical page. The desk background will be completely removed.
No scanned pages yet. Let's start scanning!
ReaderPDF's advanced online document scanner lets you capture and digitize your study sheets, receipts, invoices, or physical contracts directly from your mobile phone or PC webcam with maximum sharpness. Thanks to our integrated 3D perspective processor with 4 interactive corner pins, you can precisely outline the boundary of any physical sheet of paper, instantly removing the surrounding desk background and straightening the image. Everything runs locally inside your browser's sandboxed memory using the Canvas API. This guarantees 100% confidentiality because your private documents are never uploaded to external servers or cloud services.
Our scanner is fully integrated with a powerful offline Optical Character Recognition (OCR) engine powered by Tesseract.js. It automatically extracts written or printed text from your images, converting scanned papers into fully editable text in seconds. You can copy the extracted text to your clipboard, send it to your digital study notebooks, or download it. This local processing makes it perfect for handling sensitive business contracts or personal notes where privacy is a top priority.
By performing all optical recognition locally on the client side, ReaderPDF eliminates the risk of unauthorized data interception. You do not need to register, purchase a subscription, or download heavy desktop programs to extract text. It works instantly and securely directly inside your modern web browser.
To achieve professional-grade digitization results and near-perfect text recognition, keep the following guidelines in mind:
When you take a photo at an angle, the paper is spatially distorted. By dragging the 4 guide pins to the corners of the sheet, our math engine computes a 2D homography matrix directly in your browser, projecting the paper flat and removing the background for a clean, upright document.
Yes. ReaderPDF uses the advanced Tesseract.js library for Optical Character Recognition in offline mode. This means the AI extracts written text from your photos directly inside your own web browser, without transferring images to cloud servers.
The smart scan filter optimizes local image contrast, compensates for shadow and room lighting variations, and whitens the paper background while highlighting the text. This mimics scanning from a professional physical device.
Cloud scanners require uploading your images, which exposes sensitive personal or corporate data to external servers. Local OCR processing is 100% private, runs entirely offline, uses no network bandwidth, and generates results instantly without subscription fees or file limits.
Yes. ReaderPDF's local OCR scanner handles multilingual documents. It is pre-configured to read Spanish, English, and French characters with high recognition accuracy directly on your client side.
Absolutely. Once the document text is processed, you can copy the text to your clipboard with a single click, or export it to the ReaderPDF interactive notebooks to format and read it using the text-to-speech audio reader.
ReaderPDF