What is Font Size Tester?
Type any text and see it at every size from 8px to 96px. Switch between px, rem, and pt units, and tweak line height and letter spacing to nail your typography.
How to use
- Step 1 — Type or paste the text you want to test.
- Step 2 — Adjust the size range and unit (px, rem, or pt) to preview.
- Step 3 — Compare all sizes side by side to pick the best option for your design.
Result
Testing a navigation label: type 'Dashboard' and compare it at 12px, 14px, and 16px to find the most readable size without wasting space.
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