Web Font Loading Optimizer
A preload plan for your fonts.
Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.
Web Font Loading Optimizer
How to use this tool
- Enter the font count, average size and how many to preload.
- Press Generate to see total, preloaded and deferred sizes.
- Use Load sample, Copy result or Clear as needed.
Worked example
Four fonts at 40 KB each total 160 KB; preloading 2 gives 80 KB preloaded and 80 KB deferred.
What this tool does not do / Limits
This plans sizes only. It does not change any site, load any font, or measure real loading speed.
Frequently asked questions
Why preload only a few fonts?
Preloading every font can slow the first paint; preloading only the fonts needed above the fold is usually better.
Does this speed up my site by itself?
No. It is a planning calculation; you still apply the plan to your own site.
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