Free online tools, done right.
About LarkKit
LarkKit is a collection of free online tools that run entirely in the browser with no sign-up: building-material calculators (concrete, paver, mulch, decking), a ring size chart, a depreciation schedule calculator, and image tools (SVG to PNG, DPI converter, image splitter, PNG/JPG to SVG). Everything is free with no usage limits.
PlatformsWeb
✓ VerifiedOct 7, 2026
Made by
Fuqi Zhu
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