SVG Optimizer

The SVG Optimizer is a free online tool that shrink svg files by stripping editor metadata, comments, default attributes, and excess precision. 100% client-side, no upload.. It runs entirely in your browser with no installation or sign-up needed.

No. The optimizer runs entirely in your browser using native DOMParser. Files never leave your device.

Rough heuristic of ~30% of plaintext size — typical for well-structured SVG markup. Actual CDN compression may vary slightly.

Those are the primary way screen readers announce SVG content. Keep them for public or UI assets; only strip from purely decorative images.

Yes, the SVG Optimizer is 100% free with no registration, no hidden fees, and no usage limits. All processing happens locally in your browser, ensuring complete privacy.

Absolutely. The SVG Optimizer processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the SVG Optimizer is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the SVG Optimizer in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

The SVG Optimizer supports a wide range of popular formats and languages. Check the tool interface for the full list of supported options.

Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.

A regular image compressor works on raster formats like PNG and JPEG, throwing away pixel data to shrink the file. An SVG is not pixels at all — it is XML text that describes shapes, so there is nothing to compress in the photographic sense. An SVG optimizer instead rewrites that text: it deletes characters the browser never needs, like editor metadata, comments, the XML declaration, redundant namespaces, and coordinates carried out to twelve decimal places. Because SVG is plain text, every character removed is a real byte off the wire, and the image still renders pixel-for-pixel identically since the geometry is untouched. That makes the savings lossless, unlike raster compression which trades quality for size. Paste your markup above and the tool reports exactly how many bytes each cleanup pass removed.

For almost all web graphics, two or three decimal places is plenty. Design apps often export coordinates like 100.000000 or 50.987654321, but a screen renders in whole pixels, so digits beyond the third rarely change a single visible pixel while bloating the file. This tool defaults to a precision of three and lets you set anything from one to six digits, rounding every numeric attribute and path coordinate to that limit, trimming trailing zeros, and dropping the leading zero in values like 0.5. Drop to one or two digits for small icons where the savings are largest; keep four or more only for very large illustrations or precise technical drawings where rounding could visibly shift a curve. Use the side-by-side preview to confirm the shape still looks right after you lower the precision.

Yes, as long as the optimizer is smart about which IDs are actually referenced — and this one is. Before removing anything, it scans the whole document for IDs pointed to by url(#id), href="#id", and xlink:href="#id", which is how gradients, filters, clip paths, and <use> elements link to each other internally. Only IDs that nothing references get stripped, so the ones your CSS, animations, or reusable symbols depend on are preserved. The risk to watch for is external references: if your JavaScript or a stylesheet in another file targets an SVG element by id, the tool cannot see that and may remove it. For standalone icons that is rarely a problem, but if you script your SVGs, review the output or leave the "Remove unused IDs" toggle off. Try it above and check the diff tab.

Every SVG presentation attribute has a built-in default defined by the specification, and the browser applies that default whenever the attribute is absent. So fill-opacity="1", stroke-width="1", stroke-linecap="butt", and opacity="1" all describe the value the element would already have if you wrote nothing at all. Including them is harmless but pure dead weight — the rendered result is byte-for-byte identical with or without them. Editors add these explicit attributes because they serialize an element's full computed state, not the minimum needed to draw it. This optimizer knows the spec defaults and strips any attribute whose value matches its default, which adds up quickly across an icon set where the same redundant attributes repeat on every shape. One caution: only remove defaults when nothing overrides them via CSS, since a removed attribute can let an inherited style take over. Paste your file to see the cleanup in action.

SVGO is the popular Node-based command-line optimizer that runs as part of a build step, configured through plugins and config files. This tool covers the same high-value cleanups — stripping editor metadata, comments, default attributes, unused namespaces and IDs, and rounding precision — but runs entirely in your browser with no install, no config, and no terminal. That makes it ideal for one-off cleanups: a logo a client just emailed, an icon you grabbed from Figma, or markup you want to inspect before committing. You get fourteen individual toggles, a live before-and-after preview on a checkerboard background, and a byte-by-byte diff, so you can see exactly what changed rather than trusting a silent build output. For a recurring asset pipeline, SVGO automation still wins; for quick interactive optimization, paste your SVG above and download the result.