Free and no signup
The image editor is available without creating an account. Its normal workflow does not require uploading the selected image to an application server.
Product reference
About MaskBeforeShare.
MaskBeforeShare is a free, no-signup browser tool for anonymizing screenshots and photos before sharing. This page documents what the product does, how it handles images and where human review is required.
Local image workflow
Images are decoded, edited and exported in the browser during normal use. The application does not need an account or server upload.
Face suggestions
An embedded MediaPipe model can suggest face regions locally. Every suggestion remains editable and must be checked by the user.
Manual control
Users can create multiple boxes, paint irregular masks, erase corrections, move or resize zones, and choose pixelate, blur or blackout.
Method
The exported file is newly rendered.
The browser draws the image and enabled masks onto a canvas, then creates a new PNG. This avoids carrying over the original file's EXIF metadata block.
- Import by picker, drag and drop, or clipboard.
- Review face suggestions and add every missing mask manually.
- Export and inspect the new PNG before sharing it.
Automatic means faces only
QR codes, emails, phone numbers, addresses, IDs, plates and secrets require manual review and masking.
Detection is best-effort
Faces may be missed or incorrectly suggested. The user remains responsible for checking the complete image.
Pixels and metadata differ
Removing original metadata does not hide an address, face or other detail that remains visible in the image itself.
Current capabilities
What is automatic, and what is not?
Automatic detection suggests faces only. Emails, phone numbers, addresses, QR codes, plates, IDs and secrets must be covered manually. Blur and pixelation can leave clues; prefer opaque blackout for sensitive text.
- Input: image files your browser can decode, such as PNG, JPEG and WebP. HEIC support depends on the browser.
- Output: a separate PNG. The original file stays unchanged.
- PDF and video: guides only, not direct editing or export tools.
- Languages: 12 interface options, selected from browser preferences or by the user. The public guides are currently in English.
Privacy boundary
Local image processing is not an offline website.
The site downloads application code, images, fonts and the face-detection model. The normal editor does not send your selected image to an application server. Optional advertising is separate from image processing and subject to your consent choice.
- Keep your original image private.
- Review every face suggestion and every other sensitive detail.
- Reopen the exported PNG and inspect it before sharing.
Privacy guides
Review the details that matter for your file.
Machine-readable references
Stable facts for search engines and assistants.
These files summarize current capabilities without claiming features that are still under development.