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Capitalization helps communicate the importance of specific words and can be used to indicate a change in meaning. To keep this effective, we need to limit what we capitalize.


  • Use sentence case most of the time.
  • Capitalize the first letter of proper nouns (product names, countries, acronyms, and people's names) regardless of where they appear in a sentence.
  • Don't capitalize feature names or pages of our UI unless they're at the beginning of a sentence. See this list for how to capitalize product, feature, and capabilities.
  • Don't capitalize articles (a, an, the) or propositions (of, on, for, in, to, with, etc.) unless they're at the beginning of a sentence.
Top 5 transaction tracesTop 5 Transaction Traces
Lew Cirne is a proper noun.Lew cirne is a proper noun.
Try the new dashboards.Try the new Dashboards.
Statue of LibertyStatue Of Liberty

Sentence case

Copy typeExample
1,024+ bits of dataKb, Mb, Gb
Headings, subheadings, and chart namesSlowest 5 transactions

Lower case

Copy typeExample
1 bit of data1 b
File extensionsjson, gif, pdf
Time periodsam, pm
Metrics over timerpm, ppm


Copy typeExample
Bytes of dataB, KB, MB
Abbreviated numbers above 9991K, 1M, 1B
AcronymsAPI, CDN, HTTP
Time zonesPDT, CST, BCN

Units of measurement

Memory, bandwidth, and drive space abbreviations have varied rules for capitalization.

  • Always include a space between the value and unit of measurement.
  • A single bit of data is lowercase (b) whereas 1,204+ bits is sentence case (13 Kb).
  • Bytes are always uppercase (13 KB, 512 MB).

Weights and distance are lowercase with no periods after the abbreviation (ft, lbs, km).

32 Kb/s32 kb/s
16 s16s
0.43 MB.43 MB
15 ft15 ft.
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