Case-insensitive find and replace

Case differences often hide repeated text from an ordinary exact-match replacement. A document may contain Brand, BRAND, brand, and BrAnD even though every form refers to the same thing. This case-insensitive find and replace tool catches every letter-case variant of a literal search term and swaps each match for one replacement. It reports the transformed text and the number of changes, making the result easy to review or automate. The operation is deterministic, uses no network service, and treats punctuation in the search term literally.

Replace every capitalization variant in one operation

Exact find and replace can miss the very variations that make real text inconsistent. A product name might appear in title case at the beginning of a sentence, uppercase in a heading, lowercase in notes, and mixed case after several editors have touched the copy. This capability searches without considering letter case, so one request can find Product, PRODUCT, product, and other case variants of the same literal term.

Every non-overlapping match is replaced, from the beginning of the source text through the end. The replacement is inserted exactly as supplied, which lets you standardize all variants to one approved spelling or remove them by using an empty replacement string. Matching is literal rather than regular-expression based.

A search containing a period, bracket, plus sign, or question mark looks for that actual character instead of activating special pattern syntax.

Supply clear strings and interpret the result

Provide three fields: text is the source material, search is the literal word or phrase to locate, and replacement is the string that should take its place. All three fields must be strings, although text and replacement may be empty. Search must contain at least one character because an empty search has no useful boundary and could imply a match between every pair of characters.

Invalid types and an empty search are rejected as invalid input instead of being silently coerced. The matching rule always ignores letter case; there is no flag to forget and no alternate exact-case mode hidden behind a default. On success, result contains the complete transformed string, count records how many non-overlapping substitutions occurred, and search and replacement echo the values applied.

A zero count is still a valid result and leaves the source unchanged. If the search term occurs inside a longer word, it is replaced there too, because this is a literal substring operation rather than a whole-word language parser. For example, searching for cat can also affect Catalog when its letters appear consecutively.

Include surrounding spaces or punctuation in search when you need a narrower literal boundary, and inspect count before publishing when a workflow expects a known number of edits.

Use predictable replacement in editing and automation

This tool fits jobs where inconsistent capitalization is the obstacle and the desired substitution is otherwise straightforward. Editors can normalize a brand, department, feature, or person name across pasted copy before it enters a content management system. Support teams can update commands and product labels in response templates even when older contributors used inconsistent case.

Test at least one mixed-case example and one zero-match example when the replacement is part of a critical publishing pipeline. The operation replaces every non-overlapping occurrence and does not preserve the capitalization style of individual matches; every hit receives exactly the same replacement. It also does not understand HTML elements, document structure, grammar, or word boundaries.

Choose a structured document editor or a regular-expression tool when those distinctions matter. For literal case-insensitive substitution, the narrow contract keeps behavior transparent and repeatable.