OCR PDF

OCRmyPDF lays a searchable text layer under the scan and leaves the image as it was, in any of six languages. Free, and the upload lasts one hour.

Open in PDF ARENA

Click to upload PDF

PDF files only

Searchable PDF

Creates a new PDF where text is selectable and searchable, overlaying the original image.

Multi-Language

Supports English, Spanish, French, Italian, Portuguese, and Hindi.

Secure Processing

Your files are processed in a secure environment and deleted automatically.

Online OCR PDF: Convert Images to Searchable Text

A scanned PDF is basically a photograph of text. You can't search for keywords, nor copy paragraphs for your work. This is where Optical Character Recognition (OCR) comes in. This technology analyzes the shapes of the letters in an image and translates them into real digital characters, giving 'life' back to your digitalized paper documents. TotalPDF Kit integrates state-of-the-art artificial intelligence engines that recognize multiple languages with amazing precision. It is an indispensable tool for digitizing historical archives, scanned invoices, or university notes.

How to Apply OCR to Your Scanned PDFs

1

Upload Your Scans

Upload the PDF files that are 'image only' and do not allow selection.

2

Select the Language

Choose the language of the text (English, Spanish, etc.) so that the AI is more precise.

3

AI in Action

Our engine analyzes every pixel looking for patterns of letters and words.

4

Receive the Searchable PDF

Download a file that looks the same as the original but now has a hidden and selectable text layer.

Neural Networks and Invisible Text Layers

Modern technical OCR is a deep learning process: 1. Image Pre-processing: We clean the scan noise, adjust contrast, and straighten pages so the engine reads better. 2. Neural Networks (Tesseract/AI): We classify each ink spot as a unicode glyph based on trained language models. 3. Creating the 'Sandwich' Layer: The result is a sandwich-type PDF; the original image stays on top to maintain the visual look, and the recognized text is placed just below in an invisible way, allowing for perfect search and selection.

Next Generation Digitization

Multi-language Support: Recognizes special characters and accents.

Visual Fidelity: The look of the document does not change at all.

Total Security: Private processing and automatic deletion of files.

Frequently Asked Questions about OCR PDF

What you should know about text recognition.

Does it work with handwritten (manual) text?
Our tool is optimized for printed (machine) text. Handwriting is very variable and the precision will be much lower.
How accurate is it?
Accuracy depends on the quality of the original scan. On sharp printed pages the result is usually clean. Blurry or very old scans may have some minor errors.
Why did my PDF become heavier?
Because we have added a full layer of text data over the images. However, we optimize this layer so that the weight increase is the minimum possible.
Is it free for whole books?
Yes, although very long files may take more time to process due to the computational load of the AI.
Is it safe for my privacy?
Absolutely. The extracted data is private and never used to train external models. The file is deleted in 1 hour.

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