Rectangular Mosaic vs ImageKit

Are you looking for a simple, efficient, and privacy-focused mosaic tool? Rectangular Mosaic offers the most intuitive way to process your images. Say goodbye to complicated operations and rough results—masking parts of your photos is now as easy as taking a screenshot. Key Features • Precise rectangular selection: Simply drag a rectangle to perfectly cover any area you want to hide. Accurate edges, neat results, and privacy protection with no traces. • Adjustable mosaic density: Smooth slider lets you control the pixelation level, from light blur to complete concealment. • 100% offline processing: All image edits happen locally on your device. No images are uploaded—your privacy belongs entirely to you. • Essential, user-friendly tools: ◦ Select images from your gallery or capture directly with the camera. ◦ Unlimited undo functionality for worry-free editing. ◦ Export in common formats like JPG and PNG. Use Cases • Sharing screenshots: Easily hide avatars, nicknames, or sensitive info in chats. • Handling ID documents: Conceal key numbers and details before sharing photos of IDs, bank cards, etc. • Protecting everyday photos: Mask license plates, faces of bystanders, or other sensitive elements in your pictures. We believe a tool should be pure, efficient, and reliable. Rectangular Mosaic is your most trusted choice for safeguarding privacy in image editing.

ImageKit is a powerful, privacy-first photo editing app that lets you resize, compress, crop, convert, rotate, and enhance your images — all without uploading anything to a server. Your photos never leave your device. PRIVACY FIRST Every edit happens 100% on-device. No account required, no cloud uploads, no data collection. Your images stay yours. RESIZE Set exact pixel dimensions for any image. Lock aspect ratio or set custom width and height freely. COMPRESS Reduce file size without ruining quality. Use the quality slider to find the perfect balance between size and sharpness. CONVERT FORMAT Convert your photos between JPG, PNG, and WebP instantly. Perfect for web use or sharing. CROP Crop to any size with free-form cropping or preset aspect ratios: square, 4:3, 16:9, 3:2, and more. ROTATE & FLIP Rotate 90°, 180°, 270° left or right. Flip horizontally or vertically in one tap. IMAGE EFFECTS Apply beautiful effects: Grayscale, Sepia, Invert, and Vintage — all processed instantly on-device. SOCIAL MEDIA SIZES One tap to resize for Instagram (post, story, portrait), YouTube (thumbnail, channel art), Facebook (cover, post), X/Twitter, LinkedIn, and TikTok. WATERMARK Add custom text watermarks with full control over position (center, corners), opacity, and font size. SHARE & SAVE Save results to your photo library or share directly to any app. ALSO AVAILABLE ON THE WEB Use the full tool suite at resizeimageonline.tools from any browser — free, no signup. Whether you're a photographer, content creator, designer, or just need to quickly resize a photo for social media, ImageKit has you covered.