Image Masking Guide

Mask Photos and Screenshots

Clean up phone numbers, names and addresses in a screenshot or photo before you post it.
Text in the image is found automatically,
and masked areas are saved with the pixels themselves changed, so they can't be recovered.

Mask a Photo
Your photo never leaves your browser
receipt.png — after saving

Recipient: Alex Hong · +1 555-000-0000
Address: 000 Example St, Unit 000

* Synthetic example. Masked areas are saved with the pixels changed.

When you need this

Marketplace proof-of-payment shots

A payment receipt or shipping label with a name, address and phone number on it.
Mask everything except what the deal actually needs before you post it.

Work screenshots

A screenshot for a bug report or a manual can carry a customer's name,
an employee ID or an internal URL — clean it up before you share it.

Photos attached to a complaint or review

When you attach a photo of a receipt or a claim form,
keep the proof and remove the personal information it doesn't need to show.

Why a mosaic isn't enough

Blurring reduces information. It doesn't remove it.

A blur or mosaic leaves some of the original brightness and color information in place,
and research has continued to explore recovery attempts under the right resolution and conditions.
Garimi covers the area completely, leaving no original pixel information behind.
If you're going to mask something, mask it so it stays masked.

Fully opaque masking
Original pixels removed
Unrecoverable

How to mask a photo

Four steps, start to finish.

  1. Step 1

    Open the image

    Open a PNG, JPEG or WebP file in File mode in the workspace.
    Everything happens inside your browser — nothing is uploaded.

  2. Step 2

    Review what was found

    Text in the image is read inside your browser,
    and candidates like phone numbers and emails are flagged.

  3. Step 3

    Drag to add more

    Faces, signatures and logos are not text — drag over them to mask them yourself.

  4. Step 4

    Save

    Masked areas are saved with the pixels themselves changed,
    so no tool can recover what was underneath.

Frequently asked questions

How is this different from a blur or a mosaic?

Blurring and mosaicking leave some of the original brightness and color information behind, and research has explored recovery attempts under certain conditions.
Garimi covers the area completely, leaving no original pixel information behind.

Is my photo uploaded to a server?

No. Opening, reading text, masking and saving all happen inside your browser.
The photo is never sent to any server.

Does it catch handwriting or blurry text too?

Clear, printed text is found reliably; handwriting and low-resolution text can be missed.
Automatic detection is a helper, not a guarantee — check the result yourself before saving and add anything it missed by dragging.

What happens to the original photo?

The original file is left untouched — a masked copy is saved separately.
Managing the original (deleting or keeping it) is up to you.