# Case

Browse 20 online case tools for working with case formats and operations in your browser. Text inputs are not stored, and uploaded files are deleted after 6 hours.

> Canonical page: https://elysiatools.com/en/tags/case

## Overview

Use this collection of 20 Case tools to work with case formats and operations through a browser interface, with no software installation required.

## Frequently asked questions

### What can I do with Case tools?

Case tools help you process, convert, validate, and manage case files and data through a browser-based interface.

### Do I need to install software?

No software installation is required. You can operate the tools in your browser.

### How is my data handled?

Your browser submits operations to Elysia Tools servers for processing. Text inputs are not stored, and uploaded files are automatically deleted after 6 hours.

## Tools

- [Advanced Case Converter](https://elysiatools.com/en/tools/advanced-case-converter): Convert between CamelCase, snake_case, kebab-case, PascalCase, and other naming conventions
- [Advanced Duplicate Line Remover](https://elysiatools.com/en/tools/advanced-duplicate-line-remover): Detect and remove duplicate lines with advanced options for mode, case sensitivity, and trimming
- [Batch Audio Rename](https://elysiatools.com/en/tools/audio-batch-rename): Batch rename audio files using patterns, text replacement, numbering, and case conversion. Returns renamed files as a ZIP download.
- [Caesar Cipher](https://elysiatools.com/en/tools/caesar-cipher): Encode, decode, and brute-force the Caesar cipher with any shift (1–25), or print all 25 candidate decodings.
- [Capitalize Sentences](https://elysiatools.com/en/tools/capitalize-sentences): Capitalize only the first letter of each sentence while preserving all other letters exactly as typed. Fixes sentence starts without disturbing acronyms, proper nouns, or intentional mixed-case.
- [CSV Header Alias Resolver](https://elysiatools.com/en/tools/csv-header-alias-resolver): Map messy CSV headers onto a clean target schema. Paste a CSV whose first row holds inconsistent column names (Customer ID, user_id, customerId, CUST_ID…) plus your target schema (one column per line) and an optional "alias=target" dictionary. Each source header is resolved through four layered passes — exact, dictionary, normalized (strips case/accents/separators/camelCase), then fuzzy edit-distance — and shown in a mapping table with method and confidence, plus target coverage and an optional normalized CSV export.
- [Hex to String Converter](https://elysiatools.com/en/tools/hex-to-string): Convert text to and from hexadecimal strings with flexible spacing, prefix (0x/\x/U+), and case options
- [Batch Image Rename](https://elysiatools.com/en/tools/image-batch-rename): Batch rename image files using patterns, text replacement, numbering, and case conversion. Returns renamed files as a ZIP download.
- [JSON to Rust Struct Converter](https://elysiatools.com/en/tools/json-to-rust): Convert JSON data into Rust structs with serde Serialize/Deserialize derives, snake_case fields, and serde rename attributes
- [Remove Duplicate Lines](https://elysiatools.com/en/tools/remove-duplicate-lines): Deduplicate lines in a list or text block. Keep the first or last occurrence, with options for case sensitivity, whitespace trimming, and dropping empty lines.
- [Sentence Case Converter](https://elysiatools.com/en/tools/sentence-case-converter): Convert text to Sentence case: capitalize the first letter of each sentence and lowercase everything else. Auto-restores the standalone pronoun "I".
- [Text Case Converter](https://elysiatools.com/en/tools/text-case-converter): Convert text between different cases
- [Text to Dot Case](https://elysiatools.com/en/tools/text-dot-case): Convert text to dot.case (lowercase with dots)
- [Text Case Inverter](https://elysiatools.com/en/tools/text-invert-case): Invert text case - convert uppercase letters to lowercase and lowercase letters to uppercase
- [Text to Kebab Case](https://elysiatools.com/en/tools/text-kebab-case): Convert text to kebab-case (lowercase with hyphens)
- [Text to Pascal Case](https://elysiatools.com/en/tools/text-pascal-case): Convert text to PascalCase (each word starts with uppercase, no separators)
- [Text to Path Case](https://elysiatools.com/en/tools/text-path-case): Convert text to path/case (lowercase with forward slashes)
- [Text to Snake Case](https://elysiatools.com/en/tools/text-snake-case): Convert text to snake_case (lowercase with underscores)
- [Title Case Converter](https://elysiatools.com/en/tools/title-case-converter): Convert text to editorial-quality Title Case using AP, Chicago, or Wikipedia style rules. Lowercases function words, capitalizes first/last words and after colons, handles hyphenated compounds.
- [XLSX Column Mapper](https://elysiatools.com/en/tools/xlsx-column-mapper): Rename, reorder, and drop Excel columns with alias matching and case/whitespace normalization

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