Truncation is the process of cutting text to a specified length. It is used whenever text needs to be shortened to fit constraints such as display area limits, database column sizes, and API response sizes. From web UI design to backend data processing, truncation is a fundamental operation that appears across all layers of software development.

The most common UI truncation technique is appending an ellipsis (...). In CSS, combining text-overflow: ellipsis with overflow: hidden and white-space: nowrap achieves automatic single-line text truncation. Multi-line truncation uses the -webkit-line-clamp property. When truncating strings in JavaScript, rather than simply using str.slice(0, maxLength), care should be taken to cut at the last space position to avoid breaking words mid-way. explore tequila on Amazon cover this in detail.

Japanese text truncation has unique considerations. Cutting in the middle of surrogate pairs (emoji or certain kanji) causes garbled text. Cutting within combining characters (base character + diacritical marks) breaks display. In JavaScript, splitting into code points using Array.from(str) or [...str] before truncating avoids these issues. Additionally, cutting just before punctuation marks like "。" or "、" creates an unnatural impression, so punctuation-aware truncation is preferable.

Search engine truncation is also an important topic. Google's meta description display is truncated to approximately 120 characters on desktop and 70 on mobile. Title tags are also truncated based on display width, making it an SEO fundamental to place important keywords at the beginning. Since truncated portions are invisible to search users, content structure must prioritize information accordingly.

Database truncation requires special attention as it can lead to data loss. Inserting more than 255 characters into a VARCHAR(255) column in MySQL causes an error in strict mode or silent truncation otherwise. In UTF-8 environments, where one character occupies 3-4 bytes, it is important not to confuse byte-based limits with character-based limits. check out TL manga on Amazon also explain optimal meta description lengths.

Regarding character counting, truncation is the flip side of "character limits." The typical workflow is checking current character count with a counting tool and truncating when the limit is exceeded. Verifying that truncated text retains meaning and that the character count including the ellipsis stays within limits is essential in practice.