Blindfold

Remove Hidden Metadata From Your Files — Before Someone Else Finds It

Every file you share online carries invisible data you never agreed to share. Your exact GPS location. Your real name. Your device. The software you used. Blindfold finds it all and removes it — entirely inside your browser. Nothing is ever uploaded.

🔒 100% Local Processing⚡ Works in Seconds🛡 No Account Needed🤖 Detects AI Image Markers

Built for people who share files for a living

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Freelancers & Agencies

Every PDF proposal you send carries your name, your software, your edit history. Every photo in your portfolio contains your GPS location. Your clients can see more about you than you ever intended to share.

Blindfold removes it before the file leaves your hands.

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Photographers & Creators

That photo you posted publicly? It contains the exact GPS coordinates of where you were standing when you took it. Your camera model. The exact time. Your editing software. Anyone can extract this in seconds with free tools.

Blindfold strips every trace before you share.

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AI Image Creators

Images from ChatGPT, Midjourney, and DALL-E contain hidden markers that identify them as AI-generated. Stock platforms, clients, and detection tools can verify your image is AI-made in seconds — without you knowing.

Blindfold detects and removes AI generation signatures from your images.

What your files reveal without you knowing

GPS Location in Photos

Every photo taken on a smartphone embeds your exact GPS coordinates — accurate to within a few metres. Share that photo publicly and anyone can find the building you were standing in. Blindfold removes GPS data from JPEG, PNG, and WebP images instantly.

Author & Company in Documents

PDF files, Word documents, PowerPoint presentations, and Excel spreadsheets all store the name of the person who created them and the company they work for. Send a proposal to a client and they can see your internal software, your editor's name, and your revision history.

AI Generation Markers in Images

Images created with ChatGPT, DALL-E, Midjourney, and Adobe Firefly contain embedded signatures that prove the image is AI-generated. These C2PA markers and XMP tags are readable by anyone with a free metadata viewer — and by stock photo platforms automatically.

Device Name & Serial in Photos

Your camera or phone stores its model name, sometimes its serial number, and your device's unique identifier inside every photo it takes. This data travels with every image you share — silently identifying your exact device to anyone who looks.

Edit History in Office Files

Microsoft Word, Excel, and PowerPoint files store a complete revision history — who edited the file, how many times, and when. They also store tracked changes, comments, and sometimes deleted content that is still recoverable.

Software & Workflow in PDFs

PDFs reveal which software created them — Adobe Acrobat, Microsoft Word, Google Docs, Canva. They also store creation dates, modification dates, and sometimes internal file paths from the computer that made them. This exposes your entire workflow to anyone who receives it.

How Blindfold removes your hidden data

01

Drop your file

Drag and drop any supported file onto Blindfold. JPEG, PNG, WebP, PDF, DOCX, PPTX, XLSX — all supported. No upload. The file stays in your browser.

02

See what's hiding inside

Blindfold scans the file locally and shows you every hidden data point — GPS coordinates, author names, AI markers, device info — with a plain-English explanation of exactly what each piece of data reveals about you.

03

Remove everything in one click

Click Clean and Blindfold strips all hidden data from your file. The cleaned file is rebuilt entirely in your browser. Nothing is ever sent to any server.

04

Download your clean file

Download the cleaned file instantly. Same format, same quality, zero hidden data. Safe to share with anyone.

Your files never leave your device. Ever.

Most online privacy tools upload your files to their servers to process them. Blindfold is different. Every single operation — scanning, metadata extraction, cleaning, rebuilding — happens entirely inside your own browser using Web Workers. Your files are never transmitted anywhere. Not to our servers. Not to any third party. Not anywhere.

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Open your browser DevTools while using Blindfold. Watch the Network tab. You will see zero file upload requests fire during the entire process.

Web Workers run directly in your browser — the same technology used by Google Docs and Figma for local processing.

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We store nothing. We see nothing. We receive nothing except your subscription payment if you upgrade to Pro.

File types Blindfold supports

Free — No account needed

  • JPEG images
  • PNG images
  • WebP images
  • AI image detection (C2PA, Midjourney, DALL-E markers)
  • 10 files per day

Pro — $5/month

  • Everything in Free
  • PDF documents
  • DOCX Word files
  • PPTX PowerPoint files
  • XLSX Excel spreadsheets
  • AI marker removal (C2PA, XMP, prompt text)
  • Unlimited files
  • Batch upload (50 files at once)
  • Downloadable Privacy Report PDF

The technology behind client-side privacy

A Web Worker is a small piece of JavaScript that the browser runs in its own isolated thread, separate from the page you see. Blindfold uses Web Workers to do every heavy operation — parsing your file, reading its hidden metadata, and rebuilding a clean copy — inside your own browser. Nothing about your file ever touches a network connection.

Most online privacy tools take a different approach: you upload your file to their server, they run their code there, and they send back a "clean" version. Even when those services promise to delete your file afterwards, you have to trust that promise. Client-side processing removes that trust requirement entirely. Open your browser's DevTools, watch the Network tab while you use Blindfold, and you will see zero file uploads — you can verify the privacy promise yourself in seconds.

This is the same class of technology Figma uses to keep design files responsive and Google Docs uses for spell-check and offline editing: real work, done locally, without round-trips to a server. When you use Blindfold to remove EXIF data from images or strip document metadata from a PDF, the operation runs entirely on your machine — Blindfold is a privacy metadata cleaner that never sees what it is cleaning.

The result is a faster experience and a stronger privacy guarantee. You can clean file metadata online without "online" ever meaning "uploaded." The cleaned file is built in your browser's memory and saved directly to your device. Close the tab and every trace is gone.

Common questions

Does Blindfold upload my files?

No. Never. All processing happens in your browser using Web Workers. Zero file data is transmitted to any server at any point.

Can Blindfold remove AI detection markers from images?

Blindfold removes metadata-based AI markers — including C2PA tags, generator signatures, prompt text, and XMP provenance data. It cannot remove pixel-level watermarks like Google SynthID, which are embedded in the image pixels themselves and cannot be removed by any tool.

What metadata does Blindfold remove from PDFs?

Author name, company, last modified by, creation date, modification date, software used, producer, revision history, and any custom properties stored in the file.

Is the free tier really free forever?

Yes. The free tier allows 10 file scrubs per day with no account needed. It resets at midnight. No credit card required.

What happens to my file after cleaning?

The cleaned file is created entirely in your browser memory and downloaded directly to your device. Blindfold retains nothing. When you close the tab, everything is gone.

Does removing metadata affect file quality?

No. Metadata is separate from the actual content of your file. Removing it does not change image quality, document text, or any visible content. Your file looks and works exactly the same — it just carries no hidden data.