liminfoSVG Optimizer
Free web tool: SVG Optimizer
Optimization Options
About SVG Optimizer
The SVG Optimizer is a free, browser-based tool that reduces SVG file sizes by stripping unnecessary markup that design tools leave behind. It removes XML declarations, HTML comments, metadata blocks, editor-specific namespaces from Inkscape and Adobe Illustrator, empty group elements, title and description tags, and redundant whitespace — all of which inflate file size without contributing to the rendered image.
Front-end developers, UI/UX designers, and performance engineers use SVG optimization as a routine step in their asset pipeline. Smaller SVGs mean faster page loads, lower bandwidth costs, and cleaner version-controlled diffs. The tool also shortens floating-point numbers to two decimal places (e.g., 123.456789 becomes 123.46), which is the largest single source of byte savings in path data-heavy illustrations.
Processing is entirely client-side using JavaScript regex transformations. Your SVG source code is never sent to any server. The tool shows you the original byte size, optimized byte size, and percentage saved in real time so you can immediately evaluate whether the output meets your targets. The optimized code is displayed in a syntax-highlighted code block and can be copied to the clipboard with one click.
Key Features
- Removes XML declarations (`<?xml ... ?>`) that are unnecessary in inline or HTTP-served SVGs
- Strips HTML comments (`<!-- ... -->`) and `<metadata>` blocks generated by design tools
- Deletes Inkscape and Sodipodi namespace attributes and elements (inkscape:, sodipodi:, xmlns:inkscape, etc.)
- Removes Adobe Illustrator RDF metadata (dc:, cc:, rdf: namespaces and elements)
- Cleans up empty `<g></g>` group elements that add nesting without visual effect
- Truncates floating-point coordinates to 2 decimal places, reducing path data significantly
- Removes empty `style=""` and `class=""` attributes left by editors
- Shows original size, optimized size, and percentage saved in a live stats panel
Frequently Asked Questions
What does the SVG Optimizer actually remove?
It removes XML processing instructions, HTML comments, metadata blocks, Inkscape/Sodipodi editor namespaces and elements, Adobe Illustrator RDF data, empty group tags, title/desc elements, empty style and class attributes, and reduces floating-point numbers to 2 decimal places. It also collapses multiple consecutive blank lines into one.
Will the optimized SVG look different from the original?
No. The removed content — declarations, comments, metadata, editor-specific namespaces, and empty groups — has no visual effect on the rendered SVG. Reducing decimal precision to 2 places causes sub-pixel differences that are invisible to the human eye in normal rendering conditions.
How much file size reduction can I expect?
Results vary greatly by source. SVGs exported from Inkscape or Adobe Illustrator often contain several kilobytes of editor metadata that are not visible. Typical savings range from 10% for hand-coded SVGs up to 50–70% for files exported from vector design tools that embed extensive editor data.
Is this tool as powerful as SVGO?
This tool performs a pragmatic subset of what SVGO does: it handles the most common sources of bloat (editor metadata, comments, empty elements, decimal precision). SVGO additionally performs path merging, transform collapsing, and structural optimizations. For production pipelines, SVGO via npm is recommended; this tool is ideal for quick one-off optimizations in the browser.
Does it handle inline SVG as well as standalone files?
Yes. The optimizer processes raw SVG markup regardless of whether it comes from a standalone .svg file or an inline `<svg>` block in HTML. Simply paste the SVG code into the text area and the optimized version will appear immediately.
What happens to SVGs that use `<title>` for accessibility?
The optimizer removes `<title>` and `<desc>` elements as part of its cleanup pass. If your SVG is used in a context where these elements provide accessibility information, you should re-add them after optimization or skip this tool and use SVGO with selectively disabled plugins instead.
Can I undo the optimization?
The original SVG is preserved in the input text area. The optimized output is shown separately in a read-only code block. You can always edit the input to restore it, or simply close the page — nothing is stored server-side.
Why does my percentage saved show 0%?
If the optimizer finds no removable content in your SVG — for example, if it was already hand-coded without editor metadata — the output will be nearly identical to the input and the savings percentage will be 0% or close to it. This is expected behavior for clean, minimal SVGs.