ClientSideTools Privacy-First Browser Tools

SVG viewBox Optimizer & Cropper

SVGs frequently ship with excess whitespace or a wrong viewBox, wasting bytes and breaking responsive sizing. Measure the true content bounds, crop visually, preview preserveAspectRatio, and export a clean SVG.

SVG & CSS Engineering Local processing Your SVG never leaves your browser.

Tool interface

Introduction

A loose viewBox makes icons render small inside their box and adds dead space to illustrations. Tightening it improves sizing and reduces layout surprises.

How it works

  • The SVG is parsed and rendered off-screen to measure the content bounding box.
  • You trim or manually set the viewBox and preview the result.
  • The optimized SVG is serialized for copy or download.

Privacy

All measurement and serialization is local. No upload, no account, no API key.

Limitations

  • Cannot infer intended whitespace; cropping is a design decision.
  • getBBox() may not account for strokes at edges — add padding if needed.

FAQ

What is a viewBox?

It defines the internal coordinate window of the SVG — the region that gets scaled to fit the element's size.

Is my SVG uploaded?

No. Everything runs locally.

Related tools

Version and changelog

  • Version: 1.0.0
  • Last updated: August 12, 2026
  • Changelog: Initial production release.