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PDF Viewer & Inspector

Open PDF files locally, preview up to 10 pages at a time, extract page text, inspect document metadata and structure, and download the original bytes without uploading the file.

Inspect and clean image metadata

JPEG, PNG, and WebP files are processed without leaving your device.

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Read PDF pages and metadata without uploading the file

DecodeLens combines a canvas-based page preview with extracted page text, document metadata, outline and attachment counts, structural offsets, and a SHA-256 fingerprint. The original bytes remain available for download without being rewritten.

PDF preview boundaries

  • Pages are rendered as a passive canvas preview. Annotation UI, AcroForm fields, XFA forms, embedded JavaScript, launch actions, and media are not activated.
  • Ten pages are rendered at a time to keep memory usage bounded; longer documents use previous and next page groups.
  • Text extraction follows the PDF text layer. Scanned image-only pages require OCR, which this tool does not perform.
  • A successful preview is not an antivirus or malware scan and does not establish the trustworthiness of the document.

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