Rounded Corners

Add curved border radius to images.

📅 Last updated: July 18, 2026

AI Overview

Use Rounded Corners to process, optimize, or format your data files and code directly inside your browser window. This private, 100% client-side utility provides instant processing speeds without uploading files to remote servers.

👍 Best For:Instant private client-side processing of standard data tasks

⚠️ Not For:Bulk automation requiring server-side daemon scripts

Client Sandbox Instant

Rounded Corners (Add border radius to image)

100% Client Canvas-Engine

Toolchi Smart Assist

Transform image pixels entirely client-side.

No file streams leave your network interface. Image conversions happen inside memory sandboxes.

Next step: Upload file image and choose adjustments

Upload Image FileSelect PNG, JPG, WebP, or SVG

Processed Image Render

Waiting for image

Upload an image file and apply custom configurations to run compile.

About Rounded Corners

A local client-side tool to process Rounded Corners queries in real-time.

How to Use

Input your data in the tool workspace.
Configure settings.
Process and save results.

Visual Walkthrough

Interactive Usage Guide

Step-by-step interactive mockup tutorial

1Step 1 of 3

Input your data in the tool workspace.

toolchi.online/sandbox

DROP FILE HERE

✨Why Toolchi's Image Workspace is Different

Most online rounded corners utilities require uploading your files to remote servers, exposing sensitive business or personal data to leakage, and throttle speeds with download queues. Toolchi is different. All image resizing and quantization operations execute directly inside your browser tab via client-side canvas streams and CPU worker threads. Our workspace analyzes your image dimensions and computes immediate speed readiness scores, offering optimized presets (like 1200px widths for blog hero headers) with zero cloud processing.

🛠️Need programmatic automation for this workflow?

Toolchi offers high-performance Developer APIs for this tool's pipeline. Integrate image compression, PDF merge/split, SEO audits, and AI generation programmatically.

View API Docs Get API Key

FAQs

Is Rounded Corners free?

Yes, it is 100% free and runs entirely inside your browser.

Secure Client-Side Sandbox

Toolchi operations are executed fully in your local browser sandbox. Zero files, strings, or image buffers are uploaded to servers, ensuring complete security.