Sider.AI is a browser extension for web content. Lekhak is a dedicated platform for professional documents.
Try Lekhak FreeLekhak: Dedicated Platform
Platform specifically designed for PDF translation with advanced OCR
Sider.AI: Browser Add-on
Browser extension for general AI assistance - translation is just one feature
Lekhak: Full OCR
Advanced AI-powered OCR handles poor quality scans, fading, blur
Sider.AI: No OCR
Cannot process scanned PDFs - requires already-extracted text
Lekhak: Native Support
Upload PDF → Get translated PDF in minutes
Sider.AI: Not Available
Requires browser-based workflow, cannot download formatted PDFs
Lekhak: No Installation
Access directly via browser, no software installation needed
Sider.AI: Browser Extension
Must install browser extension, requires permissions, updates needed
"Sider.AI worked OK for website content, but our PDF documents kept getting mangled. Lekhak preserves everything perfectly."
James Miller
Document Analyst
"Sider.AI's browser extension was convenient, but constant updates broke things. Lekhak is reliable and doesn't require installation."
Yuki Tanaka
Business Operations
Sider AI is a browser extension for general AI assistance. While it offers translation, it lacks specialized PDF handling, OCR for scanned documents, and formatting preservation. Better for web content than documents.
No. Sider AI does not have OCR capabilities. It cannot process scanned documents. It works best with already-digitized text or simple web content.
Lekhak is purpose-built for document translation with professional OCR, format preservation, and batch processing. Sider AI is a general browser extension better suited for web content, not professional documents.