Top 3 best OCR tools for extracting text from images in 2025

Last update:

April 3, 2025

5 minutes

Top 3 OCR 2025 tools to convert images and PDFs into structured text, easily integrated.

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Are you looking to automate the management of your documents? OCR (optical character recognition) is a powerful tool for converting your images or PDF files into usable data. Whether for invoices, contracts, bank statements or administrative documents, or administrative documents, text extraction becomes fast, accurate, and accessible.

Here's our pick of the top 3 OCR tools for extracting text from an image.

1. Koncile.ai

Koncile.ai is an OCR solution powered by artificial intelligence, designed to automatically extract data from your PDF documents or images. Unlike simple online converters, Koncile offers an engine adapted to different use cases: invoices, delivery notes, contracts, prescriptions, etc.

Strengths:

  • API and SDK available for integration into your tools
  • High precision thanks to LLM (Large Language Models) processing
  • Customizing the fields to be extracted
  • Compatible with PDF, PNG, JPEG
  • Structured exports: JSON, Excel or database

Here are the steps you need to take to extract text from an image:

  1. Start with Create an account for free.
Koncile signup, AI OCR, OCR with API, online OCR tool, image text extraction, enterprise OCR, extraction model, no-code OCR, PDF image OCR, custom OCR. Screenshot of Koncile.ai signup interface to create a free account and configure a custom OCR model.

  1. After creating the account, simply press the “Use Cases” tab and then click on “Create a new extraction model”
OCR model Koncile, AI OCR, create extraction model, custom OCR, document OCR tool, no-code interface, OCR API, PDF image OCR, data field OCR, automation OCR. Screenshot showing the “Use Case” tab where users can create a new OCR extraction model in Koncile.ai.
  1. Create your “Model Name” and select “empty” (to custom create it)
OCR model name, empty template creation, AI OCR Koncile, business OCR, custom extraction, image PDF processing, automated OCR, no-code OCR, smart OCR tool, API OCR. Image of the model creation screen where the user defines a name and selects “empty” for full customization.
  1. Then click on your template
Access OCR model, AI OCR, document image processing, Koncile interface, OCR automation, character recognition, SDK OCR, JSON OCR, enterprise OCR, no-code OCR. Visual showing the user selecting their created extraction model in the Koncile workspace.
  1. Create your “Field Name” (example: “Text”) as well as the “Field Description” (example: “Extract all text from an image”) then click on “Add”. All you have to do is upload your document.
OCR field name, Koncile setup, custom field, image text extraction, OCR documents, LLM OCR, AI OCR tool, field configuration, OCR automation, API integration. Example of creating a custom field in a Koncile model to extract a specific text area from a document.
  1. Last step click on “Start the test file” then “View the document”
OCR test Koncile, preview OCR result, PDF image OCR, test document OCR, enterprise OCR tool, automation OCR, AI OCR, extract image content, OCR model preview. Screenshot of the Koncile interface where a test file is run to preview extracted content.
  1. Result: We Can See That Koncile.ai Succeeded in extracting text from the image of the scanned document with great precision.
OCR result Koncile, AI accuracy, image text extraction, automated OCR, enterprise-grade OCR, scanned document OCR, structured JSON OCR, API OCR, high-quality OCR. Final result screen showing structured OCR extraction from a scanned document using Koncile.ai.

After analyzing the results, I found them to be very accurate. That's why I put Koncile.ai in the top position of the best OCR-based image-to-text conversion tools. Unlike others, its API compatibility allows for smooth integration into automated business processes.

2. ImageToText.io

Imagetotext.io is a free online tool that allows you to process up to 3 images at a time (and more in a premium version). It supports various formats like JPG, PNG, GIF, or WEBP, and offers a simple interface for copying extracted text or downloading a text file.

Strengths:

  • Free for basic use
  • Interface accessible to all
  • Multilingual
  • Fast and Easy Conversion

Boundaries: no API, limited data customization, restrictive output format (.txt).

  1. Submit your document by selecting the button (+ Browse).
Imagetotext OCR, image upload OCR, online OCR tool, extract JPG text, free OCR, simple interface, image text recognition, web-based OCR, multilingual OCR, fast extraction. User uploading an image via Imagetotext.io interface to start OCR text extraction.
  1. Once the image was uploaded, I pressed (Submit and Extract).
OCR image extraction, submit button OCR, online tool, JPG PNG OCR, basic web OCR, Imagetotext interface, plain text OCR, image processing, free online OCR, no account OCR. Image of user clicking “Submit and Extract” to process the image and retrieve text.
  1. Then download the file (.txt). Here are the results obtained.
Download text file, OCR result, text extraction success, OCR image to .txt, Imagetotext.io output, web OCR, raw text output, instant OCR, lightweight tool, free OCR result. Visual showing the downloaded result file after successful OCR extraction.

After analyzing the results, I found them to be accurate and so I decided to place this tool among the best image to text conversion tools based on OCR. However, the absence of an API limits its integration into an automated process for businesses.

3. Prepostseo

Prepostseo offers an interesting image-to-text conversion tool for those who want to process large files (up to 20 MB). It is adapted to low-resolution documents and offers several output formats (.txt, .doc).

Strengths:

  • Extracting text even on a blurry image
  • Multilingual
  • Various output formats
  • Accessible on mobile and computer

Boundaries: no contextual verification, no business logic, no integration possible via API.

  1. Submit your document by selecting the button (Browse files).
Prepostseo OCR, file upload OCR, image text tool, online OCR, free recognition, text converter, blurry image OCR, convert image to .doc, JPG OCR, OCR web platform. Screenshot of Prepostseo interface where user uploads a low-resolution image for OCR processing.
  1. Once the image was uploaded, I pressed (Extracts text).
Prepostseo OCR, extract text button, image to text conversion, blurry document OCR, multilingual image OCR, free OCR tool, web interface, fast recognition, easy OCR, .doc conversion. User presses “Extract text” to initiate OCR processing of the uploaded file.
  1. Then download the file (.txt). Here are the results obtained.
Download OCR result, Prepostseo output, .txt file OCR, image-to-text conversion, .doc export, OCR for business, extract text from image, document recognition, no-code OCR, image result. Visual showing final OCR output with download options for .txt or .doc files.

After analyzing the results, I found them to be accurate and so I decided to place this tool among the best image to text conversion tools based on OCR. However, the absence of an API limits its integration into an automated process for businesses.

4. Comparative table of the 3 text extraction tools

Tool API/SDK AI Accuracy Customization Supported Formats Output Formats Pro Usage Ready
🥇Koncile.ai Yes ★★★★★ ★★★★★ PDF, PNG, JPEG JSON, Excel, DB Yes
🥈Prepostseo No ★★★ ★★ JPG, PNG, JPEG .txt, .doc Partially
🥉Imagetotext.io No ★★★ ★★ JPG, PNG, GIF, WEBP .txt No

Jules Ratier

Co-fondateur at Koncile - Transform any document in structured data with LLM - jules@koncile.ai

Jules leads product development at Koncile. He has been interested in business process automation for years, as well as the real-world applications of LLMs in daily operations.

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