Alok Das
Alok DasChemistry · Research
Document Confidentiality Guarantee

Privacy Policy

Effective Date: September 17, 2026 • Applicable to all tools within Client-Side PDF Studio (Merge, Split, Compress, Sign, Redact/Edit, and Scan/OCR).

The Zero-Upload Commitment

Your PDF documents, photos, text overlays, and electronic signatures are never transmitted to any remote server or cloud infrastructure. All processing is executed solely in your device's local browser memory via WebAssembly and client-side JavaScript.

1. How the Architecture Protects Your Privacy

Traditional online PDF utility websites require users to upload confidential documents (contracts, financial audits, medical records, identification papers) to third-party cloud servers. Once uploaded, those files are vulnerable to unauthorized inspection, breach, or server logging.

Client-Side PDF Studio operates on an entirely distinct paradigm:

  • Client-Side Execution: All document manipulation algorithms (combining pages, slicing page ranges, resampling graphics, applying whiteout masks, and vector signature stamps) are executed strictly in your web browser through pdf-lib and pdfjs-dist.
  • In-Browser OCR: Optical Character Recognition for camera scans is powered by Tesseract.js compiled to WebAssembly (Wasm). Text detection runs on your local CPU / Web Workers without streaming raw images or recognized text back to any server.
  • Sandboxed Memory: Files exist solely in volatile browser Random Access Memory (RAM) or blob URLs managed directly by your browser engine.

2. Information We Do NOT Collect

To eliminate any ambiguity, we explicitly declare that we do not collect, inspect, log, share, or monetize any of the following:

Uploaded Files & Content

The actual binary PDF streams, page layouts, text, images, or forms in your documents.

Signatures & Stamps

Your handwritten ink strokes, typed cursive glyphs, or uploaded stamp photos.

Camera Captures & Images

Camera video streams, snapshots, and processed scan photos from the Scan & OCR tool.

File Names & Metadata

Original filenames, author tags, creation timestamps, page counts, or embedded exif tags.

3. Data Retention and Destruction

Because your documents are never transmitted across the network, our servers retain 0 bytes of your data. The lifecycle of your files follows these clear bounds:

  • During Active Session: The documents you drop into the tool exist as temporary ArrayBuffer or Blob objects inside your active browser tab.
  • Upon Reset or Tab Close: Whenever you click “Clear”, navigate to another page, or close the browser tab, the browser automatically purges the memory heap and executes garbage collection.
  • No Cloud Backups: There are no server databases, intermediate cache storage pools, or recovery logs holding your files. Once destroyed, they cannot be recovered by anyone.

4. Third-Party CDNs and Static Assets

To run high-performance WebAssembly routines and OCR language models without excessive initial page load bundles, the tool may request static code libraries:

  • PDF.js Worker & Fonts: Loaded over secure HTTPS to parse and render vector PDF pages. Only standard static JavaScript and WebAssembly code files are requested.
  • Tesseract OCR Trained Data: When running OCR, language recognition matrices (such as English traineddata) are downloaded directly to your browser's IndexedDB/Cache storage. No image data is shared with the hosting CDN.

5. Cookies and Telemetry

The PDF Studio suite does not place tracking cookies, advertising identifiers, or user surveillance beacons on your machine. We do not inspect user behaviour within the tool or link your document workflows to any personal profile.

6. Global Privacy Regulations Compliance

Because our architecture is founded on the principle of Data Minimization and Privacy by Design:

  • General Data Protection Regulation (GDPR / UK GDPR): Under Articles 5, 25, and 32, no personal data from your documents is processed on our servers, satisfying rigorous data protection requirements by default.
  • California Consumer Privacy Act (CCPA / CPRA): We do not sell, share, or retain personal information derived from PDF files.
  • Digital Personal Data Protection Act, 2023 (DPDP India): As a zero-server processor, no personal data fiduciary or processing obligations arise concerning your document contents.

7. User Security Recommendations

While Client-Side PDF Studio ensures that your documents never leave your machine, the security of your documents depends also on your local device environment:

  • Do not use public or unverified shared computers when editing confidential documents.
  • Ensure your web browser is updated with the latest security patches.
  • Close your browser tab after completing sensitive redactions or signature stamping.

8. Contact & Inquiries

If you have any questions regarding the security architecture or privacy posture of the PDF Studio suite, please contact the developer directly:

Alok Das

Email: alok@alokdasofficial.in

Location: Hojai, Assam, India — 782435

Website: alokdasofficial.in

Professional Profile

More from Alok Das

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These interactive tools are personal side-projects built for exploration and utility. My primary professional commitment is in M.Sc. Chemistry, analytical research, and laboratory methodology.

Client-Side PDF Studio: 100% in-browser processing • Zero server uploads