100% Client-SideMedia & Graphics

Privacy-First Image Cropper, Resizer & Squircle Studio

Zero-upload client-side image transformation studio. Crop images with fixed aspect ratios, apply continuous Apple squircle curves or circular masks, and export high-resolution WebP, PNG, or JPEG assets without transmitting your private photos or design assets across the internet.

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#How to Use This Tool

1Upload your source image (PNG, JPEG, WebP, SVG, or GIF) or click "Load Sample Image" for instant experimentation.
2Select a target aspect ratio: Freeform, 1:1 Square, 16:9 Landscape, 4:3 Standard, 9:16 Mobile Story, or 3:2 Photo.
3Choose a corner mask: Sharp Square, Rounded Rectangle with custom slider, Apple Continuous Squircle, or 50% Circular Avatar.
4Select a backdrop matte (Transparent, Solid Color, or Gradient) if framing for social cards.
5Choose your export container (WebP, PNG, or JPEG) and adjust quality.
6Click "Download Cropped Image" or copy the equivalent CSS clip-path / SVG markup directly into your code editor.

#Mathematical Formula & Standards

Standard rectangular rounding in CSS creates an optical seam where a straight border meets a circular corner arc. A true Apple continuous squircle follows the Lamé curve / superellipse equation (|x/a|^n + |y/b|^n = 1 with n ≈ 4), ensuring smooth curvature transitions (C2 continuity) from straight edges to corners identical to iOS system design.

#Edge Cases & Technical Considerations

Preserving Alpha Transparency in Corners

When exporting circular avatars or rounded photos, JPEG format does not support transparency and will render clipped corners with a black or white backdrop. Always select WebP or PNG format with Transparent backdrop to preserve transparent corners.

High-Resolution DPI Preservation

The engine extracts pixels at natural source resolution rather than viewport display size, ensuring high-DPI (Retina) clarity remains crisp upon export.

Large File Memory Management

Images up to 25MB are handled in-memory using hardware-accelerated Canvas rendering contexts without UI stutter or server limits.

#Frequently Asked Questions

Q:Are my uploaded images stored or sent to any server?

Never. All cropping, pixel interpolation, masking, and compression execute entirely on your device via HTML5 Canvas. Zero network requests are made, ensuring complete compliance with GDPR Article 28, KVKK, and enterprise confidentiality requirements.

Q:What is the difference between a rounded rectangle and an Apple squircle?

A standard rounded rectangle consists of straight lines connected to circular arcs, creating an abrupt change in mathematical curvature where the line meets the circle. A squircle continuously shifts its curvature radius from the straight edge to the vertex, eliminating optical harshness and producing a premium visual aesthetic.

Q:Can I export images with transparent backgrounds?

Yes. When selecting WebP or PNG format and leaving the backdrop setting as Transparent, all clipped corner areas retain full alpha channel transparency.

Q:Can I use the generated CSS and SVG in my own website?

Yes. The studio provides instant copy buttons for both CSS clip-path and SVG <clipPath> definitions so you can apply the exact same squircle shape to native HTML elements.

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