About FileConvertLab

FileConvertLab is a focused toolkit for fast, reliable document conversion and OCR. Our goal is simple: help you move content between popular formats and extract text from images and PDFs so you can spend less time on tedious file prep and more time on actual work.

What you can do

  • Convert PDFs to and from office formats (Word, Excel, presentations) and images to PDF.
  • Run OCR on scans, PNG/JPEG images, and scanned PDFs to produce searchable PDF or editable DOCX.
  • Perform essential PDF operations like page image extraction and size optimization.

How it works

Upload your file, choose a tool, and wait for a completion notice. The site provides hints, auto-selects suitable OCR settings, and returns a searchable PDF or an editable DOCX when possible.

Our approach to quality

We rely on proven libraries and engines, pair them with thoughtful defaults, and pay attention to performance and predictable results. We also care about clarity in the interface and a smooth flow for frequent tasks. We keep a pragmatic focus on security and privacy expectations that modern teams have for their work files.

Technology stack

FileConvertLab is built on battle-tested open-source components. PDF operations leverage Apache PDFBox for parsing and generation, ensuring broad compatibility with PDF versions from 1.0 through 2.0. Office document conversions run through LibreOffice in headless mode—the same rendering engine behind Writer, Calc, and Impress—providing high-fidelity transformations between DOCX, ODT, XLSX, and PPTX formats.

Our OCR pipeline uses Tesseract, Google's open-source optical character recognition engine trained on millions of pages across 100+ languages. Text recognition accuracy on clean scans typically exceeds 98%, with intelligent preprocessing for skewed pages, low contrast, and mixed layouts. The entire system runs on containerized Linux infrastructure with SSD storage for fast file operations.

Supported formats

We currently support the most common document interchange formats: PDF, Microsoft Office formats (DOCX, XLSX, PPTX), OpenDocument formats (ODT, ODS, ODP), rich text (RTF), plain text (TXT), and image formats (JPEG, PNG) for OCR input. Output options include searchable PDF with embedded text layers, editable Word documents, and extracted images from PDF pages.

Our roadmap includes audio and video conversion, archive handling, and image optimization. We prioritize formats that professionals encounter daily in cross-platform workflows—files exchanged between Windows, macOS, and Linux users, or between different generations of office software.

Who uses FileConvertLab

Students converting thesis drafts between formats. Small business owners extracting text from scanned invoices. Researchers digitizing paper archives for searchable databases. Legal professionals making discovery documents text-searchable. Designers preparing PDF portfolios for different submission requirements. Remote teams standardizing document formats across mixed Windows and Mac environments.

FileConvertLab handles the unglamorous but necessary work of file format translation—the kind of task that interrupts your actual work unless you have a reliable tool that just works. We aim to be that tool.

Contact us

Have ideas, questions, or suggestions? Write to info@fileconvertlab.com — we read every message and aim to respond promptly.

About FileConvertLab | FileConvertLab