Image Processing

IMAGE TO TEXT

Convert images to editable text with AI-powered OCR. Upload, paste, or drop — works in your browser.

Upload Image

Language

Page Segmentation Mode

Preprocessing

Convert to grayscale

Threshold Off

Adjusts the binarization threshold. 0 = off.

Advanced Settings

Multi-Worker OCR

Batch Processing

Image Preprocessing

Contrast 100

Sharpen

Denoise (median filter)

Auto-threshold (Otsu)

Layout / Zone Selection

Deskew / Rotation

Rotate 0

Auto deskew (detect & correct rotation)

Confidence Visualization

Post-Processing

Spell check (marks unknown words)

Image Preview

Upload an image to extract text

History

No OCR history yet.

Frequently Asked Questions

What file formats are supported?

We support PNG, JPG, JPEG, WebP, BMP, and other common image formats. The tool processes files directly in your browser using Tesseract.js OCR engine.

Is there a file size limit?

Images up to 10MB are recommended for optimal performance. Larger files may take longer to process depending on your device.

How accurate is the OCR?

The OCR accuracy depends on image quality, text clarity, and font type. Clear, high-contrast images with standard fonts yield the best results. The tool shows per-word confidence scores so you can verify accuracy.

Is my image data private?

Yes. All image processing happens locally in your browser using Tesseract.js. Your images are never uploaded to any server or stored anywhere.

Which languages are supported?

The tool supports English, Spanish, French, German, Italian, Portuguese, Russian, Arabic, Hindi, Chinese (Simplified & Traditional), Japanese, Korean, and many more. Select your language from the dropdown before processing.

What is Page Segmentation Mode (PSM)?

PSM tells the OCR engine how to interpret the page layout. Automatic mode works for most documents. Choose Single Block for standard paragraphs, Single Line for one line of text, or Single Word for individual words.

Does preprocessing improve accuracy?

Yes. Converting to grayscale can improve OCR on color documents. The threshold slider binarizes the image (converts to pure black and white), which often significantly improves accuracy on scans and photos of text.

What is Multi-Worker OCR?

Multi-Worker OCR runs multiple Tesseract.js workers in parallel, each processing different sections of your image simultaneously. This dramatically improves both speed and accuracy, especially on complex documents with mixed content.

How does batch processing work?

You can upload multiple images at once and process them all in a single batch. Each image is run through OCR independently, and results are presented individually so you can review and export text from every image in one workflow.

Can I OCR a specific region or zone?

Yes. The zone selection feature lets you draw bounding boxes on your image to limit OCR to specific areas. This is ideal for extracting text from tables, headers, or specific form fields while ignoring the rest of the image.

What output formats are available?

You can download results as plain text, JSON with per-word bounding box coordinates and confidence scores, or hOCR — a structured HTML-based format that preserves layout and metadata for downstream processing.

What are preprocessing presets?

Preprocessing presets are one-click configurations optimized for different document types. Choose "Document" for scanned text, "Receipt" for small-print thermal paper, "Screenshot" for screen captures, or "Handwriting" for handwritten notes. Each preset automatically adjusts grayscale, contrast, threshold, sharpen, and denoise settings.

What is deskew and auto rotation?

Deskew automatically detects and corrects rotated or skewed images before OCR processing. You can also manually rotate images from -30° to +30° using the rotation slider. This significantly improves OCR accuracy on photos of documents taken at an angle.

Can I export OCR results as a searchable PDF?

Yes. The PDF export option creates a searchable PDF with the original image as a background layer and invisible OCR text overlaid at the correct positions. The text can be selected, copied, and searched in any PDF viewer.

Does the tool detect tables?

When OCR detects aligned rows and columns of text, the Table tab automatically presents the extracted data in an HTML table format. You can then download the data as a CSV file for use in spreadsheet applications like Excel or Google Sheets.

How to Use

Upload Image

Select or drag-and-drop your image file. You can also paste an image from your clipboard. Supported formats include PNG, JPG, WebP, and BMP.

Choose Language

Select the language of the text in your image from the dropdown. The OCR engine will download the necessary language data on first use.

Configure Advanced Options

Set the number of parallel OCR workers, enable preprocessing filters (grayscale, threshold, denoise), and define zone regions by drawing bounding boxes on the image preview.

Configure Options

Adjust Page Segmentation Mode to match your document layout. Enable grayscale conversion or adjust the threshold for better results on challenging images.

Extract Text

Click Extract Text to run OCR. The first run will download the OCR engine and language data (may take a few seconds). Subsequent runs are faster.

Batch Process

Add multiple images to the batch queue and process them all at once. Each result appears in its own tab for side-by-side comparison and individual export.

View Results

Review the extracted text in the Plain tab. Switch to JSON for structured output with bounding boxes and confidence scores, or HOCR for layout-preserving HTML. If table structure is detected, switch to the Table tab to see it as an HTML table.

Export Your Data

Copy text to clipboard, or download in your preferred format — plain text (TXT), JSON with word coordinates, HOCR, searchable PDF with invisible text overlay, or CSV when table data is available.

About the Image to Text (OCR) Tool

The Image to Text (Advanced OCR) tool uses Tesseract.js — a 100% client-side OCR engine — to extract text from images right in your browser. No images are ever uploaded to any server.

New advanced features include multi-worker parallel OCR for faster, more accurate results; batch processing for handling multiple images at once; zone/layout selection for targeting specific regions; preprocessing presets (Document, Receipt, Screenshot, Handwriting); auto deskew and manual rotation correction; searchable PDF export with invisible text overlay; and automatic table detection with CSV download. Output can be downloaded as plain text, JSON with bounding boxes, hOCR, searchable PDF, or CSV.

Built with privacy in mind, all processing happens directly in your browser. No sign-up required, no data stored, no tracking. Simply open the tool, upload your image, and extract text instantly.

Related Tools

Image Background Remover