Round/rewrite number lists (cleanupListOfValues)
Rounds numbers inside space-separated lists (points, viewBox, transforms) for smaller attributes.
What Round/rewrite number lists does in SVGO
SVGO applies cleanupListOfValues as part of its plugin pipeline. On SVGOMG.net the toggle is labeled Round/rewrite number lists (off by default). Optimization runs entirely in your browser — files are not uploaded to a server.
Use SVGOMG.net with Show original to compare before and after. If output looks wrong, disable this plugin first, then re-enable related transforms one at a time.
When to enable
Polygons and polylines with over-precise point lists.
When to disable
When list values must stay at full precision for hit-testing or animation.
Watch out for
Off by default; enable with care on data visualizations.
Try it
- Open SVGOMG.net and load your SVG (file, paste, or demo).
- Find Round/rewrite number lists in the Features panel (
cleanupListOfValues). - Toggle the plugin and compare the preview; download when satisfied.
Part of: IDs, defs, and references
This plugin is covered in the IDs, defs, and references topic guide along with related transforms.
SVGO Plugin Guide
Browse the SVGO Plugin Guide or read the full SVG optimization walkthrough.