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CrateX.app

Image Redaction

Image Redaction

Image Redaction supports mosaic, blur, and solid masks with rectangle, brush, and eraser tools, and can batch-export same-size images after review.

Drag and drop images here or click to browse

Supports PNG / JPEG / WebP / AVIF / HEIC / HEIF
Image Redaction

Quick Start

1
Drag or click to add images (multi-select supported)
2
Mark sensitive areas with rectangle or brush
3
Choose effect (mosaic/blur/solid) and adjust intensity
4
Real-time preview with undo/redo
5
Export and download; multiple images auto-packaged as ZIP

Common Scenarios

ID cards

redact ID numbers, addresses

Chat screenshots

hide avatars, nicknames, sensitive messages

Bills/receipts

redact order numbers, amounts, addresses

Batch processing

apply same regions to same-size images

Redaction Tools & Options

Four tools: Select (move/resize), Rectangle, Brush, Eraser
Select a region first to adjust effect; unselected sets default for new regions
Auto-sync when all images are same size; auto-disabled otherwise
Output format: PNG (lossless) / JPEG (compact) / WebP (balanced)

Usage Advice

Shortcuts: Ctrl/⌘+Z undo, Ctrl/⌘+Y redo, Del delete
Scroll to zoom, right-click drag to pan (macOS: Ctrl+click)
Use solid blocks for maximum privacy
Mosaic/blur may theoretically be reversed by AI
Process large images or batches in smaller groups

Limitations & Compatibility

Very large images may fail to export; resize first
JPEG doesn't support transparency; fills with white
HEIC/AVIF decoding depends on browser support
Undo history limited to 50 steps per image

Privacy & Security

All processing happens locally in your browser. Review every redaction area before export to avoid exposing original content.

FAQ

6

Continue with these related tools for the next step.