If you searched for a “Squoosh alternative” because you need smaller SVG files, you may be one tab away from the wrong tool. Squoosh is Google's in-browser compressor for raster images — PNG, JPEG, WebP, AVIF. svg.dog optimizes vector SVG markup. They solve different problems.
What Squoosh actually does
Squoosh loads your image into WebAssembly codecs in the browser and shows a before/after size slider. It is excellent for hero photos, screenshots, and texture-heavy artwork where the source is already pixels. It can export an SVG to PNG or WebP, but that is rasterization — not SVG optimization.
- Best for: photographs, gradients, complex bitmaps
- Compression levers: quality, codec choice (MozJPEG, OxiPNG, WebP, AVIF)
- Runs entirely client-side — nothing uploaded
- No API for build pipelines
Stay with Squoosh when: your asset is a photo or you have already decided to ship raster. See also our SVG vs WebP guide for format choice.
What svg.dog actually does
An SVG file is XML describing shapes — paths, circles, fills. Optimization removes editor cruft (Illustrator metadata, comments, redundant groups) and tightens path data. The image stays infinitely scalable. Typical wins are 30–80% smaller markup, before gzip.
- Best for: icons, logos, UI illustrations, charts, diagrams
- Engine: SVGO (same family as SVGOMG)
- Web UI for quick tests + REST API for automation
- Pair with HTTP gzip/brotli for transfer — see compress vs optimize
Choose svg.dog when: the file extension is .svg and you want it smaller without converting to pixels.
Quick decision tree
- Is it a photo or screenshot? → Squoosh (or WebP/AVIF in your CDN). Not svg.dog.
- Is it an icon, logo, or UI graphic? → svg.dog (or SVGOMG for manual one-offs). Not Squoosh — unless you deliberately rasterize.
- Need both on the same site? → Very common. Squoosh-class tools for photography, svg.dog for the icon sprite and inline nav logo.
Side-by-side comparison
| Feature | Squoosh | svg.dog |
|---|---|---|
| Format focus | Raster — PNG, JPEG, WebP, AVIF | Vector — SVG markup only |
| What gets smaller | Pixel grids & photo data | XML paths, metadata, redundant attributes |
| Scales to any size | No — fixed resolution | Yes — resolution-independent |
| Icons & logos | Wrong tool (export to PNG first) | Right tool |
| Photos & screenshots | Right tool | Wrong tool |
| Processing location | In-browser (WASM) | Web UI or API (server-side SVGO) |
| API for automation | No public API | REST API + batch |
| Typical web perf win | Smaller hero photos | Smaller icon sets & inline SVG |
| Can convert SVG → PNG | Yes (rasterize, not optimize SVG) | No — optimizes SVG in place |
| Pair together? | Often yes — Squoosh for photos, svg.dog for SVG | Often yes — complementary, not competing |
The honest verdict
Comparing Squoosh to svg.dog head-to-head is like comparing a JPEG compressor to a CSS minifier — both make files smaller, but for different file types. If you landed here from a raster-compression search, bookmark Squoosh for photos and try svg.dog on your actual SVG assets.
Still unsure which format to ship? Read SVG vs PNG and why SVG files are large before picking a tool.
Try svg.dog — no install required
Drop an SVG on the homepage or call the API. 500 free optimizations per month.
More comparisons
SVGOMG vs svg.dog
Honest comparison of SVGOMG vs svg.dog. When the classic browser UI is enough, when you need batch uploads, URL optimization, or a REST API — and how to choose.
SVGO vs svg.dog
SVGO is the gold standard CLI. svg.dog is the hosted layer on top when you need optimization from Python, Ruby, Go, PHP, or a serverless function without maintaining svgo.config.js.