GLM-OCR Free Online OCR ToolFree online AI OCR for extracting text, tables, and layout from images and PDFs.

4.2 (5)

Reviewed by Daniel Nikulshyn·Updated July 2026

Overview

GLM-OCR is a free online tool that uses AI-powered document intelligence to extract text from images and PDFs. It supports various file formats, including JPG, PNG, and PDF, with a maximum file size of 10MB. The tool can recognize handwriting, seals, code, and special characters with high accuracy and can also extract tables and formulas. GLM-OCR's AI processing pipeline aligns visual features with language understanding, allowing it to deliver accurate text extraction in challenging real-world scenarios where traditional OCR software fails. The extracted text can be downloaded in multiple formats, including plain text, Markdown, LaTeX for formulas, or structured JSON for data integration. GLM-OCR supports 8+ languages, including Chinese, English, French, Spanish, Russian, German, Japanese, and Korean, and can process documents with complex layouts. The tool is suitable for various industries, including education, research, office document digitization, PDF text extraction, invoice processing, and more. It also offers a free OCR API for developers. The tool's statistics show an OCR accuracy score of 94.62, with 0.9B AI model parameters and the ability to process 1.86 pages per second. GLM-OCR outperforms traditional OCR software and approaches large language models like Gemini-3-Pro in document text extraction accuracy. The tool works in three simple steps: uploading a document, AI processing, and getting results. It is a cloud-based online OCR tool that can be accessed through a web interface, making it easy to use and accessible to anyone with an internet connection.

Key features

AI-powered text recognition
Image and PDF input support
Table and layout extraction
Browser-based interface
Copy or download extracted text
Multi-content document handling

Pricing

Model: Free
Category: AI Agents Frameworks
Rating: 4.2 / 5 (5)

Use cases

Image to Text Online

Extract text from photos, screenshots, and scanned documents with high accuracy, making it perfect for education, research, and office document digitization.

PDF Text Extraction

Extract text from PDF files, including financial reports, academic papers, and business documents with complex layouts, with the option to download the extracted text in multiple formats.

Invoice & Receipt OCR

AI document processing for ID cards, invoices, receipts, and forms, with the option to convert the extracted data to structured JSON output automatically.

Pros & Cons

Pros

Free to use with no install
Handles both images and PDFs
Extracts tables and structured content
Simple web-based workflow

Cons

Accuracy varies by document quality
Limited control over output formatting
Uploading sensitive files raises privacy considerations
May have file size or rate limits

Reviews

4.2

Average from 5 ratings.

Frank Müller

May 24, 2026

Solid for our team

We rolled this out across the team last quarter and handles both images and PDFs. Copy or download extracted text fits neatly into how we already work, and aI-powered text recognition removed a step we used to do by hand. May have file size or rate limits, which is the main caveat, but it has held up under daily use.

Ahmed Saleh

Mar 28, 2026

Compared a few options

Evaluated this against two competitors. Where it wins: browser-based interface and handles both images and PDFs. Where it lags: limited control over output formatting. On balance the feature set — especially copy or download extracted text — justifies the 4 stars for our use case.

Yuki Mori

Oct 17, 2025

Solid for our team

We rolled this out across the team last quarter and simple web-based workflow. Image and PDF input support fits neatly into how we already work, and table and layout extraction removed a step we used to do by hand. Accuracy varies by document quality, which is the main caveat, but it has held up under daily use.

Sofia Lindqvist

Jul 14, 2025

Solid for our team

We rolled this out across the team last quarter and handles both images and PDFs. Copy or download extracted text fits neatly into how we already work, and browser-based interface removed a step we used to do by hand. but it has held up under daily use.

Rina Desai

Jun 1, 2025

Compared a few options

Evaluated this against two competitors. Where it wins: browser-based interface and extracts tables and structured content. Where it lags: limited control over output formatting. On balance the feature set — especially browser-based interface — justifies the 4 stars for our use case.

Q&A

What is GLM-OCR and how does it work?

GLM-OCR is a free online OCR tool and AI document intelligence platform. It uses a lightweight 0.9B parameter model to extract text from images and PDFs with state-of-the-art accuracy.

Asked by Xavier Costa · Apr 7, 2026

Is GLM-OCR free to use online?

Yes, GLM-OCR offers free online OCR for image to text conversion and PDF text extraction. The open-source model is available on GitHub and Hugging Face.

Asked by Lena Fischer · Feb 19, 2026

What languages does the free OCR tool support?

GLM-OCR is a multilingual OCR tool supporting 8 languages: Chinese, English, French, Spanish, Russian, German, Japanese, and Korean.

Asked by Vasyl Kovalenko · Jan 21, 2026