Hide Sensitive Info in an Image

Hide faces, addresses, card numbers, and signatures in an image — free, and without the photo ever leaving your device. Drag rectangles over exactly what needs to disappear, then blur it, pixelate it, or black it out completely; or blur the whole image in one pass. Nothing is uploaded.

How to redact sensitive information in an image with Allypdf

  1. Drop in the screenshot, photo, or scan that contains sensitive details.
  2. Drag rectangles over the areas to hide — faces, addresses, card numbers, signatures — or switch to whole-image blur.
  3. Choose the effect: blur, pixelate, or black-out (the safest for text), and set the intensity.
  4. Download the redacted copy — full quality outside the redactions, with EXIF metadata stripped.

Why "no upload" matters here

Think about what people redact: ID scans, bank screenshots, medical letters, children's faces, home addresses. Uploading the UNREDACTED original to an online tool so it can hide the sensitive part is exactly backwards — the server sees everything before the redaction exists. Allypdf runs the whole edit on a canvas inside your browser, so the only copy that ever exists off your device is the one you chose to share, after the redaction.

Common uses

  • Black out account and card numbers in a banking screenshot before sending it to support.
  • Blur bystanders' faces or license plates in a photo before posting it publicly.
  • Hide your home address and signature on a scanned letter or contract.
  • Pixelate confidential rows in a dashboard screenshot for a presentation or bug report.

Frequently asked questions

How do I blur part of an image for free?

Open Allypdf's Hide Info in Image tool, drop in the picture, and drag a rectangle over the part to blur — then download the result. It's free, watermark-free, and runs entirely in your browser, so the unredacted original is never uploaded anywhere.

Is blurring text a safe way to redact it?

Not always, and this tool is honest about that: heavily blurred or pixelated text has been reconstructed in research settings. For text that must be genuinely unrecoverable — account numbers, ID numbers, passwords — use the Black Out effect, which replaces the pixels with a solid fill that contains no information to recover. Blur and pixelate remain fine choices for faces and general de-emphasis.

Is my photo uploaded to a server?

No. The image is decoded, redacted, and re-encoded by your own browser. A redaction tool that uploads your unredacted original would defeat its own purpose — here there is no server copy at any point.

Does the export still contain the photo's location metadata?

No — it's stripped automatically. Exports are re-encoded from a clean canvas, which removes EXIF metadata including GPS coordinates, timestamps, and camera details. Covering the pixels while leaving location data embedded would leak information anyway, so this happens on every download.

Will the rest of my image lose quality?

Outside the areas you redact, the image keeps its full resolution. PNG sources stay lossless, and JPEG sources are re-encoded at high quality. The intensity slider only affects the regions you selected.

Related tools

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  • Compress Image — Reduce image file size free without visible quality loss. Compression runs in your browser — photos never leave your device.
  • Crop Image — Crop JPG, PNG, or WebP to exact dimensions free. In-browser cropping keeps personal photos completely private.
  • Password Protect PDF — Add a password to your PDF free. Encryption runs locally in your browser, so sensitive files are never uploaded anywhere.