{
  "id": 9234420,
  "title": "How I built a 100% client-side privacy toolbox using vanilla JavaScript",
  "url": "https://urgent.news/2026/09/23/how-i-built-a-100-client-side-privacy-toolbox-using-vanilla-javascript",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-09-23T00:46:50.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/ifraeem/how-i-built-a-100-client-side-privacy-toolbox-using-vanilla-javascript-4553"
  },
  "original_language": "en",
  "account": "Last month, the author needed to remove metadata from a PDF before sending it to a client. They did what many people do — searched for a free PDF metadata remover, clicked the first result, uploaded their file, waited a few seconds, and downloaded the cleaned version. Simple, right? But then, they wondered where their file had gone. They had no idea that their file could be sitting on an unknown server, possibly being analyzed or indexed.\n\nThe author realized the terrifying reality that we have been conditioned to upload our personal files to servers we know nothing about. This includes tax documents, family photos, business contracts, resumes with home addresses, and more, all uploaded to random websites promising \"free\" conversion. The problem nobody talks about is that when you use most online tools, you upload your file to their server, and while they process it somewhere, you download the result, hoping they delete your file afterward. However, most files are copied, logged, or analyzed on that server you've never seen.\n\nThe author decided to build something different. They spent weeks creating a suite of tools that run entirely in your browser, with no uploads, servers, or tracking. This suite is called PrivateToolbox. Everything happens on your computer — your file never leaves your device. No accounts, no email, no watermarks, just open the tool, use it, and close the tab. It's completely free, with no hidden fees or premium versions required.\n\nPrivateToolbox offers over 15 utilities, such as PrivacyClean for stripping EXIF and metadata from images and PDFs, a Password Generator for creating secure passwords locally, a Loan/EMI Calculator for calculating payments without sending financial data anywhere, a SHA-256 Hash Generator for verifying files without uploading them, and more.\n\nThe author emphasizes that these tools matter, especially for journalists working on sensitive stories. Uploading a PDF with metadata that could reveal a source's identity to an unknown server could expose the source and create a digital trail. With a client-side tool, the document never leaves the computer, and the metadata is stripped locally.\n\nThe technology to process files exists in your browser. It's been there for years, but most \"free\" tools still require you to upload everything. PrivateToolbox changes this by running entirely in your browser, with zero outgoing requests when processing files. The author encourages everyone to try it, use browser developer tools to verify the lack of outgoing requests, and suggests building more tools that respect privacy. They invite suggestions for new tools and hope that by sharing this privacy toolbox, everyone can enjoy better privacy tools.",
  "summary": "Why uploading your files to “free” tools might be costing you more than you think Last month, I needed to strip metadata from a PDF before sending it to a client. Nothing sensitive, just a regular work document. I did what most of us do — Googled “free PDF metadata remover,” clicked the first result, uploaded my file, waited 30 seconds, and downloaded the cleaned version. Simple, right? Then it…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}