You export a 24x24 icon from Figma. File size: 3.2 KB. You drop it into the Piick SVG Optimizer and run it. Output: 480 bytes. That is an 85% reduction. Why? Figma exports SVG with metadata blocks, comments, default-value attributes, and 12-decimal-place path precision by default. Browsers do not need any of it.
This article lists 8 common bloat patterns, with a copy-paste fix for each.
30-Second Overview
- Figma, Illustrator, and Sketch exports contain 60-80% redundancy: metadata plus comments plus default attributes plus path precision
- 8 common pitfalls: metadata / comments / default attributes / path precision / color verbosity / duplicate IDs / hidden layers / editor namespace prefixes
- Browser-side SVG optimization compresses 50-85% with no visible quality loss
- Try the Piick SVG Optimizer first: paste SVG, pick rules, get output in under a minute
- For deep optimization, integrate SVGO CLI into your build pipeline (Vite, webpack, Next.js)
The 8 Common Pitfalls
Pitfall 1: Figma’s Metadata Block
The symptom: exports contain a metadata block stuffed with application ID, component IDs, node IDs, and Figma version numbers, ranging from tens to hundreds of bytes. The block has zero effect on browser rendering.
Every Figma export contains this. Pure metadata overhead.
The fix:
- Toggle the metadata rule in browser tools to strip the block in one click
- Figma Export SVG: uncheck Include metadata
- On the command line: use sed with a range match to delete the entire block
Recovery: typically 5-30% compression. Each Figma metadata block runs 200-800 bytes; complex hero illustrations often carry long ID descriptions.
Pitfall 2: XML Comments
The symptom: Illustrator exports SVGs riddled with XML comments carrying Generator, Application, and version metadata. Figma sometimes includes Group descriptions. Inkscape emits Created with markers. Comments contribute zero to browser rendering but consume 30-100 bytes each.
The fix: toggle the comments rule in tools. A regular expression handles the rest.
Recovery: 10-50 bytes per file. Detailed Illustrator SVGs often have one comment per layer; they add up to several hundred bytes.
Pitfall 3: Default Attributes
The symptom: the SVG spec defines defaults for several attributes, but design tools write them out explicitly. Pure redundancy.
The five most common defaults that can be stripped:
- fill-opacity equals 1
- stroke-linecap equals butt (default)
- stroke-linejoin equals miter (default)
- opacity equals 1
- xml:space equals preserve (only when text content needs it)
The fix: toggle the defaults rule. Each attribute costs 15-30 bytes; each SVG carries 5-15 default attributes.
Recovery: 200-800 bytes per file, depending on attribute complexity.
Pitfall 4: Excessive Path Precision
The symptom: Illustrator exports with 6 decimal places by default (sub-micrometer accuracy). A standard screen pixel is 0.26 mm at 100% DPI; 6 decimals represent 0.000001 mm, far below what any screen can show.
The fix:
- Set tool path precision to 2 (the default)
- Illustrator Export SVG: set Number Precision to 2
- Figma does not expose precision but post-process works
Recovery: the highest impact item, typically 30-60% compression. A complex hero illustration can go from 40 KB down to 18 KB just by changing decimal places.
Pitfall 5: Verbose Color Notation
The symptom: colors come in three commonly redundant forms. RGB function syntax with three comma-separated decimals. Six-character hex notation. Named colors as CSS keywords.
The fix: toggle the colors rule and tools convert everything to hex in one pass.
- rgb to short hex (3 characters, not 7)
- long hex to short hex (3 characters, not 6)
- named colors to short hex
Recovery: 5-10 bytes per color. 50 colors means 250-500 bytes saved.
Pitfall 6: Duplicate IDs
The symptom: every layer auto-generates an ID like Frame 123; a complex SVG has dozens of IDs, referenced zero times. Browsers keep them all but contribute nothing.
The fix: toggle the unused-ids rule, preserving only IDs referenced by CSS or scripts.
Recovery: 100-500 bytes, depending on layer count.
Pitfall 7: Hidden and Locked Layers
The symptom: Illustrator and Sketch sometimes export hidden-but-not-deleted layers; Figma exports hidden frames. Designers forget to clean before export. Zero rendered pixels, pure bytes.
The fix:
- Pre-export cleanup, designer-side habit
- For already-exported files, tools can strip display equals none elements and visibility equals hidden
Recovery: hundreds of bytes to several KB depending on layer count. Detailed Illustrator logos often have a dozen hidden layers, accumulating 1-2 KB of pure waste.
Pitfall 8: Editor Namespace Prefixes
The symptom: Illustrator exports carry sodipodi and inkscape namespace attributes. Inkscape exports carry sodipodi. Sketch carries sketch prefix. Every editor dumps its internal namespace. Figma is cleaner but still has xmlns:xlink.
The fix: toggle the namespace rule to strip in one pass.
Recovery: 50-200 bytes. 50 namespace attributes stack up fast.
Tool Selection
Three main paths for SVG optimization:
Browser-side SVG optimization
- Pros: zero install, zero upload, privacy-safe (good for brand assets and internal illustrations)
- Cons: not as powerful as SVGO CLI (70-80% coverage vs SVGO 100%)
- Best for: design exports with one-click compression, one-off files, no-npm workflows
SVGO CLI
- Pros: 100+ plugins, build pipeline integration (Vite, webpack plugin), automation
- Cons: requires Node.js plus config file plus local install
- Best for: production builds, SVG-heavy projects, long-term pipelines
- Install: add svgo as a dev dependency, configure it, run svgo against your SVG folder
Hand-rolled regex and sed (one-off)
- Pros: zero dependencies, runs anywhere
- Cons: edge cases worse than tools, breaks on weird formats
- Best for: emergencies (CI broke, sed to the rescue)
Across the toolchain: browser tool first, see the compression, SVGO CLI second for CI. That is the piick-recommended flow.
5 Common Scenarios
Scenario 1: Deleting viewBox by Mistake
Real case: someone wrote a tool that treated viewBox as a default attribute and stripped it. The SVG then failed to render at any reasonable size. viewBox defines the SVG coordinate system; browsers cannot scale without it. Tools must whitelist it. The Piick tool keeps viewBox by default.
Scenario 2: Removing currentColor
Real case: CSS theming relies on fill equals currentColor. The tool converted it to a hex color and stripped the special value; dark mode broke. Tools must not touch currentColor and similar semantic values. Verify your optimized SVG still contains currentColor and that no style block was deleted.
Scenario 3: Path Precision Too Aggressive
Real case: precision set to 0, paths look pixelated when zoomed. 2 decimals are enough; only consider 3 for very large SVGs.
Scenario 4: CSS-Animation IDs Stripped
Real case: removed id equals circle-spin, CSS animation referencing it broke. CSS-referenced IDs must be preserved. Tools should offer an option to keep CSS-referenced IDs.
Scenario 5: Empty Attributes Break Responsive Logos
Real case: width equals auto was treated as an empty attribute and removed, responsive sizing broke. Before stripping, confirm the attribute is not auto, inherit, currentColor, or another semantic keyword.
Recommended Practices
- Use browser tools first, add SVGO CLI to build as a second compression layer
- Test every rule on production assets before deploying, especially path precision and color conversion to hex
- For sensitive assets (brand logos, internal illustrations), browser tools keep data local with zero upload
- In Figma, Illustrator, and Sketch exports, disable redundant options at the source (Include metadata and similar) so the file is already clean
Want to try now? Paste any Figma, Illustrator, or Sketch export into the Piick SVG Optimizer, check the 8 rules, compress in one click, see the compression ratio and result within a minute. If you also want to extract the logo color palette, drop the same SVG into the Piick Color Palette Extractor. One file, two tasks.