SVG Optimizer & Preview Tool

Practical Uses of SVG Optimization

SVG file optimization significantly improves web engineers' work efficiency in the following situations:

1. Website Lightweighting

SVG icons or logos received from designers are bloated with metadata generated by tools like Adobe Illustrator or Figma. Optimization can reduce the file size of SVG embedded in HTML or CSS by 30-50% and improve page load speed.

2. Mobile Performance Improvement

In mobile environments, communication volume and rendering speed are critical. Lightweight SVG by removing unnecessary information can significantly improve mobile user experience. The effect is especially noticeable in UI that uses many icons.

3. Design Tool Output Post-Processing

Design tools like Illustrator, Sketch, and Figma include layer information, guides, hidden elements, and other editing data in SVG. This data is unnecessary for display and can be batch-deleted with this tool.

4. Inline SVG Embedding

When embedding SVG directly into HTML, code readability is important. Optimization removes unnecessary comments and spaces, keeping the HTML source clean while also reducing file size.

5. Icon System Construction

In an icon system that manages multiple SVG icons as symbols, optimizing each SVG can significantly reduce the overall bundle size. Particularly effective in component-based development like React and Vue.

6. Build Pipeline Pre-Processing

Before introducing automation tools like SVGO, manual confirmation with this tool can pre-evaluate the optimization effect. Also useful as testing before integrating into CI/CD pipelines.

What is SVG Optimization? Elements Removed

SVG optimization is the process of removing unnecessary information contained in SVG files to reduce file size without changing the image appearance. This tool automatically removes the following elements:

Elements Removed

XML comments () - Comments left by designers or tools
Metadata tags (<metadata>) - Author information, creation date time, copyright information, etc.
Title and description (<title>, <desc>) - For accessibility but unnecessary for display
Editor-specific namespaces (xmlns:sketch, xmlns:inkscape, etc.) - Editing tool-specific information
Editor-specific attributes (sketch:*, inkscape:*, sodipodi:*, etc.) - Editing information from Sketch, Inkscape, etc.
Unnecessary spaces and line breaks - Formatting for human readability only

Benefits of Optimization

File size reduction (typically 30-50% reduction) - Page load speed improvement
HTML source readability improvement - Code cleanup when using inline SVG
Bundle size reduction - JS bundle size reduction when building with Webpack, Vite, etc.
Rendering speed improvement - Reduction in number of nodes processed by browser

Frequently Asked Questions (FAQ)

Will optimization change the SVG appearance?

No, optimization only removes metadata and comments that do not affect display, so the SVG appearance does not change at all. Colors, shapes, and sizes are all preserved.

How much will the file size be reduced?

For SVG output from design tools, you can generally expect a 30-50% size reduction. Files output from Adobe Illustrator or Sketch have particularly high reduction effects.

Does optimization work for simple hand-written SVG?

Simple hand-written SVG does not contain metadata, so the reduction effect may be small. Mainly effective for SVG output from design tools.

Will optimization break animations or interactions?

This tool does not change elements related to display (<path>, <circle>, <animate>, etc.) at all, so animations or CSS styles and JavaScript manipulation work normally.

Will <title> and <desc> for accessibility also be removed?

Yes, this tool prioritizes file size reduction, so <title> and <desc> are also removed. If accessibility is important, add manually after optimization or use advanced tools like SVGO.

Can multiple SVG files be optimized in batch?

The current version processes one at a time. If you need to process a large number of files, we recommend using command-line tools like SVGO.

Can optimized SVG be restored to its original state?

Deleted information cannot be restored. It is recommended to always save the original SVG file separately. Please back up the original before processing with this tool.

What is the difference from SVGO?

SVGO is a Node.js-based high-function optimization tool that can perform advanced optimization such as path simplification. This tool runs in the browser and specializes in basic optimization such as metadata removal. Its features are convenience and instant preview.