This tool runs the official SVGO browser engine only after you click Optimize. It uses the standard plugin preset, removes scripts and event handlers for safer web use, and lets you keep IDs when CSS, JavaScript, gradients, masks or external references depend on them.
Free SVG Optimizer
Runs entirely in your browser - no upload, no sign-up.
Scripts and event handlers are removed
SVG input
Optimized SVG
Ctrl or Command + Enter
Paste SVG markup or choose a file to begin
What does an SVG optimizer do?
An SVG optimizer reduces vector file size by removing editor metadata, comments, redundant attributes and unnecessary numeric precision. Paste markup or choose a file to run SVGO in your browser, compare the original and optimized previews, then copy or download the smaller SVG without uploading your artwork.
How to use
- 1Add your SVG. Paste complete SVG markup, drag a local .svg file onto the uploader, or load the built-in example.
- 2Choose safe settings. Set numeric precision, keep multipass enabled for extra reductions, and preserve IDs if other code refers to them.
- 3Optimize and compare. Run SVGO, then review the original and optimized byte counts plus both visual previews.
- 4Copy or download. Copy the compact markup or download a new .optimized.svg file while keeping your source artwork unchanged.
Who it's for
- Frontend developers shrinking icons, logos and illustrations before adding them to a site or component library.
- Designers cleaning metadata and editor-specific markup from Figma, Illustrator, Sketch or Inkscape exports.
- Performance teams measuring exact UTF-8 byte savings before shipping vector assets in a web bundle.
- Component authors preparing compact inline SVG markup for React, Vue, Svelte or plain HTML.
FAQ
Is this SVG optimizer free?
Yes. You can optimize SVG files without an account, payment or installation. The tool shows the exact UTF-8 byte change and lets you copy or download the result directly from your browser.
Is my SVG uploaded to a server?
No. File reading, SVGO processing, byte measurement and preview generation happen locally in your browser. Your logos, icons and unpublished artwork are not uploaded by this tool.
How large an SVG can I optimize?
The tool accepts SVG source up to 5 MB. That limit keeps parsing responsive on phones and typical laptops. Very large exported illustrations may work better after you remove embedded raster images or split the artwork into smaller assets.
Will SVG optimization change how the image looks?
SVGO is designed to preserve rendering while removing redundant data, but aggressive numeric rounding or ID cleanup can affect complex files. Compare both previews and test the optimized SVG in its real embedding context before replacing a production asset.
What does decimal precision change?
Decimal precision controls how many fractional digits SVGO keeps in coordinates, transforms and related numeric values. Lower values often save more bytes but can visibly shift very detailed or unusually large artwork. Three digits is a practical default for most web icons and illustrations.
Should I preserve SVG IDs?
Keep IDs when CSS, JavaScript, aria attributes, gradients, masks, filters or external documents refer to them. You can turn preservation off for self-contained decorative files when you want SVGO to remove or shorten unused identifiers.
Does the optimizer remove scripts from SVG files?
Yes. The optimization pipeline removes script elements, event-handler attributes and JavaScript links. This makes exported files safer for ordinary web image use, but it also means this tool is not suitable for SVG applications whose intended behavior depends on scripts.
What does multipass optimization do?
Multipass lets SVGO process the output again while each pass makes it smaller. Some transformations expose new cleanup opportunities for the next pass. It can improve compression slightly, although the first pass usually produces most of the savings.