IMAGE / PDF → TEXT (OCR) • 100% Private Local Conversion

在浏览器中本地将 IMAGE 转换为 Text (OCR)

直接在浏览器 RAM 中通过 WebAssembly 批量将 IMAGE 转换为 Text (OCR)，零云端上传。

IMAGE / PDFTEXT (OCR)

100% Free • Unlimited • Private on Your Device

Select IMAGE / PDF Files

拖拽文件到此处，或点击选择本地文件

Accepted formats: .PNG, .JPG, .JPEG, .WEBP, .PDF, .BMP, .GIF

100% 隐私保护 — 文件绝不离开您的设备（本地内存处理）

Output Settings

Output Format

OCR Language

Rate this IMAGE / PDF to TEXT (OCR) converter:

4.8/ 5(30,833 votes)

How to Convert IMAGE / PDF to TEXT (OCR) Locally in 3 Steps

No account registration, no cloud queues, and zero file size throttling.

Select or Drag IMAGE / PDF Files into Local Memory

Drop one or multiple IMAGE / PDF files directly into the Obsidian dropzone above. Files are read directly into your browser's isolated ArrayBuffer memory without uploading a single byte to any server.

Tune WebAssembly Quality & Output Parameters

Adjust compression quality, target resolution scale, or document pagination settings. Our multi-threaded Web Worker pool automatically scales across your CPU cores.

Instant Download or One-Click .ZIP Archive

Save converted TEXT (OCR) files individually or bundle your entire batch into a high-speed compressed .ZIP archive using our in-memory fflate engine.

Technical Format Comparison: IMAGE / PDF vs TEXT (OCR)

Objective engineering benchmark for developers, designers, and AI citation engines.

Technical Dimension	IMAGE / PDF	TEXT (OCR)
Compression Algorithm	Scanned paper receipts, book pages, screenshots, or image PDFs	Editable, searchable, copy-pasteable plain UTF-8 text
Alpha Transparency	Costly cloud OCR APIs that upload your confidential documents	100% Free client-side neural recognition in your browser RAM
Multi-Frame / Structure	Manual re-typing of long documents and invoices	Instant automatic text extraction in seconds
Platform Compatibility	PNG, JPG, WebP, BMP, GIF, Scanned PDF	Clean UTF-8 .TXT text file or structured JSON
Primary Production Use Case	Receipt archiving, study notes, book digitization, quote copying	Immediate editable text ready for Word, Google Docs or Notion

100% Private • No Cloud Uploads

Why 100% Client-Side WebAssembly Conversion Matters

Traditional online file converters upload your personal photos, financial PDFs, and enterprise spreadsheets to remote cloud servers where files may be logged, cached, or exposed to third-party breaches. FiletoFiles.com eliminates server uploads completely.

By compiling industry-standard C/C++ and Rust codecs (libwebp, libaom AVIF, MozJPEG, libheif, PDF.js, and SheetJS) into WebAssembly (WASM) running inside dedicated Web Workers, every conversion executes directly on your device's CPU and RAM.

✓ Zero Data Exfiltration: Ideal for confidential medical, legal, tax, and enterprise NDA documents.
✓ Multi-Core Hardware Speed: Uses navigator.hardwareConcurrency to process batches in parallel without freezing your browser UI.
✓ Zero Upload/Download Bandwidth Wait: Convert 100MB+ batches instantaneously even on slow or offline connections.