Online OCR workspace
OCRStack Online OCR Tool
Upload PDFs, images, scans, screenshots, receipts, and invoices to extract editable text, Markdown, and structured OCR output.
OCR Workspace
Upload to Mistral OCR
Supports PDF, JPG, PNG, TIFF, BMP, GIF, and WebP files up to 50 MB
Checking login status...
PDF, JPG, PNG, TIFF, BMP, GIF, or WebP up to 50 MB
Why OCRStack
Why Use OCRStack for OCR API Workflows?
AI OCR for real documents
OCRStack focuses on practical document OCR for PDFs, screenshots, forms, receipts, invoices, tables, and mixed-layout scans
Multi-language OCR
Use OCRStack for global document workflows where text extraction needs to handle more than one language or writing system
Fast review workflow
Move from upload to editable OCR text quickly, then review Markdown, text, and JSON-style output without manual retyping
Ready for API workflows
OCRStack keeps output easy to copy, download, store, and reuse as you move from online OCR testing to OCR API integration
Use cases
OCRStack OCR API Use Cases
Business Document OCR
Use OCRStack to convert paper contracts, reports, forms, invoices, and receipts into searchable digital text for operations and finance workflows.
- Extract useful text from PDFs, images, and scans
- Reduce repetitive manual entry for recurring document work
- Keep a path open for API integration and automated processing
Research and Knowledge Work
OCRStack helps researchers, students, analysts, and operators extract text from papers, screenshots, reports, and archived PDFs.
- Turn scanned PDFs into editable text
- Reuse OCR output in notes, databases, and documents
- Handle mixed layouts across reports, tables, and screenshots
OCR technology
OCRStack OCR Technology Advantages
AI document recognition
OCRStack uses AI OCR to recognize text in complex documents. The workflow is tuned for PDFs, scans, screenshots, tables, receipts, invoices, and mixed-quality images.
Compared with basic OCR software, OCRStack emphasizes document structure, readable output, and results that are easy to review, copy, and reuse.
Document structure preservation
OCRStack not only recognizes text but also keeps useful structure such as headings, paragraphs, lists, tables, and field-like content.
Whether you are testing OCR quality online or preparing an OCR API workflow, OCRStack is built to make converted documents easier to inspect and reuse.
Notes from teams
OCRStack Workflow Examples
"Use OCRStack to test how invoices, receipts, and finance PDFs convert before wiring OCR into a production workflow."
Finance operations
Invoice and receipt OCR
"Upload reports, papers, and screenshots to create editable text for notes, search, and downstream knowledge work."
Research teams
PDF and image to text
"Keep one OCR account and one credit balance ready as document volume grows across teams and providers."
Developers
Unified OCR API workflow
OCR basics
What is OCR?
OCR (Optical Character Recognition) converts documents such as scanned paper files, PDFs, screenshots, receipts, invoices, and images into editable and searchable text. OCRStack packages that workflow for online OCR testing and OCR API use cases.
- OCR text recognition transforms printed or handwritten text into machine-encoded text
- OCRStack is designed for PDFs, images, tables, invoices, receipts, forms, and real-world document layouts
- A unified OCR workflow reduces the need to compare provider APIs, output formats, and billing flows by hand
OCR formats
OCR API and Online OCR Solutions
OCRStack covers the document OCR categories developers often compare before choosing an OCR API provider:
PDF OCR API
Convert scanned PDF documents into searchable and editable text for contracts, reports, statements, and long document workflows.
Image to Text API
Extract text from screenshots, JPG files, PNG files, photos, and scanned images without rebuilding a separate OCR workflow.
Invoice and Table OCR
Use OCRStack for invoices, receipts, forms, tables, and semi-structured documents where layout and fields matter.
Technical notes
Advanced OCR API Workflow
OCRStack is built around the practical parts of adopting OCR in a real product:
AI-powered OCR
Use AI OCR to extract usable text from PDFs, images, invoices, receipts, reports, screenshots, and mixed-layout documents.
Provider-ready architecture
OCRStack's positioning centers on one workflow for multiple OCR engines, so teams can compare, route, and evolve provider usage over time.
Reusable output
Review OCR results as Markdown, plain text, and structured data that can feed internal tools, databases, and automation.
Provider comparison
Why Choose OCRStack?
Understanding OCR options helps developers choose between a single provider, open-source OCR, and an OCR API aggregator:
| Competitors | OCRStack Advantages |
|---|---|
| Basic Online OCR | OCRStack provides a cleaner account-based workflow for recurring OCR tasks than one-off free online tools. |
| Single OCR Vendor | OCRStack is positioned around a unified OCR API layer, one balance, and room for provider comparison instead of a single vendor path. |
| Traditional OCR Software | OCRStack runs in the browser, requires no desktop install, and keeps OCR output easy to copy, download, and reuse. |
Applications
Real-World OCR Applications
Healthcare
Healthcare teams can use OCR workflows to turn scanned forms and records into searchable text for internal review.
Legal
Law firms use OCRStack to extract text from contracts and compliance documents for faster review.
Education
Educational institutions use our OCR image to text capabilities to digitize research materials and make them searchable.
Finance
Banks and financial institutions use our scan and OCR technology to process forms and statements with high security standards.
Workflow
How to Use OCRStack
Upload Document
Upload a PDF, scan, screenshot, JPG, PNG, receipt, invoice, or document image
Run AI OCR
OCRStack recognizes text and document structure in an API-ready workflow
Get Results
Copy or download OCR results as Markdown, text, or structured data
FAQ
Frequently Asked Questions
What is OCRStack?
OCRStack is an online AI OCR tool and OCR API aggregator that transforms PDFs, images, invoices, receipts, forms, and tables into editable text.
Which file formats are supported?
OCRStack supports common document and image formats including PDFs, JPEGs, PNGs, screenshots, scans, receipts, invoices, and document images.
Can I use one balance for different OCR providers?
OCRStack is designed around one prepaid credit balance, so teams can use supported OCR engines without managing separate vendor billing flows.
Is OCRStack useful for developers?
Yes. The online OCR tool lets developers test quality quickly, while the product positioning is a unified OCR API workflow for document recognition, routing, and automation.
Next step