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Convert text between sentence case, title case, uppercase, lowercase, camelCase and more. Browse text tools and developer converters from category hubs — processing stays in your browser.
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The box above switches styles without re-pasting. Open a dedicated page when you need worked examples, limitations, or a comparison with a neighbouring style. Automated case will not restore brand capitals such as iPhone — check those by eye.
| Style | Example | Typical use |
|---|---|---|
| Sentence case | The meeting is at noon. Please bring notes. | Emails, notes, and paragraphs after Caps Lock. |
| Title case | The Meeting Is at Noon | Blog headings and English documentation titles. |
| UPPERCASE | PLEASE BRING NOTES | Labels, warnings, and plain-text emphasis. |
| lowercase | please bring notes | Tags, slugs, and normalizing identifiers. |
| camelCase | pleaseBringNotes | JavaScript variables and JSON keys. |
| PascalCase | PleaseBringNotes | React components, classes, and types. |
| snake_case | please_bring_notes | Python, SQL, and many APIs. |
| kebab-case | please-bring-notes | URL slugs and CSS class names. |
Create URL-friendly slugs from text.
Count how often each word appears in your text.
Delete repeated lines while preserving first occurrence order.
Collapse extra spaces and trim blank lines.
Find and replace words or patterns across a document.
Pretty-print or minify JSON with clear validation errors.
Re-serialize valid JSON with JSON.stringify and indent.
Encode text to Base64 or decode Base64 back to text.
Format or minify HTML markup.
Pretty-print CSS with Prettier, or collapse whitespace.
Test regular expressions against sample text.
Join lines into continuous text.
Browse the five main categories below. Case conversion lives under Text Tools; JSON, encoding, and naming hubs sit under Code & Data.
Free tools for converting, cleaning, counting and transforming text. Convert case, remove duplicate lines, find repeated words and clean copied content.
Format JSON, HTML and CSS, encode Base64, test regex and convert between popular developer naming conventions.
Convert PNG, JPG, WebP, and SVG in the browser — files stay on your device.
Unicode bold, italic, wide, and platform-style text for bios and posts — not TTF downloads.
Passwords, UUIDs, raffle picks, and test data using the browser CSPRNG when available.
Developer topic hubs: JSON Tools, Encoding Tools, Naming Convention Tools.
CaseSwitch helps you switch between lowercase, uppercase, title case, sentence case, and mixed styles. Paste text above or open a dedicated tool below — everything runs in your browser.
Paste any text and convert it into readable sentence case. The first letter of each sentence is capitalized, the rest is lowercased, and letters after full stops become uppercase. Ideal for emails, notes, and paragraphs.
Open Sentence Case toolNote: automated converters do not apply proper-noun rules — verify names and places manually.
Turn ALL CAPS or mixed text into lowercase letters. Perfect for normalizing tags, slugs, filenames, and identifiers before further editing.
Open Lower Case toolConvert any phrase to ALL CAPS while keeping numbers and punctuation intact. Useful for warnings, labels, and emphasis in plain-text fields.
Open Upper Case toolFormat headings with conventional title capitalization. Short words like and or the often stay lowercase while important words are capitalized.
Open Title Case toolCaseSwitch is a catalogue of more than one hundred single-purpose utilities. Each tool page is written for that transform — purpose, limits, comparisons, and mistakes — so you are not guessing from a generic blurb.
Open the Title Case Converter and you get title-case rules, small-word behavior, and when sentence case is safer. Open JSON Stringify and you get re-serialization semantics, not a copy of the formatter page. Blog articles go deeper on workflows (fixing Caps Lock text, choosing URL slugs, formatting JSON locally). The editorial policy explains how we review and correct pages.
PDFs and email threads often arrive with hard line breaks, double spaces, and odd capitals. A reliable order: remove line breaks or join wrapped lines, collapse whitespace, run sentence case or inverse case for Caps Lock damage, then use find-and-replace for stubborn tokens. Our guide on cleaning pasted text walks through Word, Google Docs, and chat exports with tool links at each step.
Variables in JavaScript favor camelCase; Python and SQL favor snake_case; public URLs and CSS classes favor kebab-case; React components use PascalCase. Mixing them without a map is how APIs drift. Use the homepage converter for a quick preview, then open the naming hub or the complete developer naming guide when you are standardizing a schema or folder tree.
Editorial policy · Blog & guides · Clean pasted text · Developer naming guide
Fast
Instant conversion in the page — paste once, switch styles without reloading or waiting on a server queue.
Private
Most tools process locally in your browser. Drafts are not uploaded to CaseSwitch for conversion.
Free
No account required. Open a tool, read the guide, and start converting, formatting, or generating.
CaseSwitch is built for fast, private, free conversion: paste once on the homepage, switch case styles instantly, or open a dedicated tool when you need examples and edge cases. We do not upload your paste for conversion.
Beyond case conversion, explore text cleaners and developer naming tools from the category hubs. Unicode fonts, images, and random generators are available when you need them — each with its own guide.
Yes. Every tool is free: no account, subscription, or usage cap. Convert case, format JSON, generate passwords, and convert images without signing up. We support the site with unobtrusive ads and optional Ko-fi tips.
No. Almost every tool processes input in JavaScript in your browser. We do not upload your paste for conversion. The homepage editor and notepad may save a draft in this browser’s local storage on this device only.
Sentence case capitalizes the first letter of each sentence (The quick brown fox). Title case capitalizes major words in a heading (The Quick Brown Fox) and usually leaves short words like and, the, and of lowercase in the middle. Use sentence case for emails and paragraphs; title case for headlines — unless your language’s house style says otherwise.
Usually. Those generators emit Mathematical Alphanumeric characters, not a font file. Instagram, Discord, TikTok, and WhatsApp often display them as bold or italic. Always preview on the phone that matters; missing glyphs become boxes. Prefer real markdown in Discord chat when the channel parses it.
If the whole paragraph is uppercase, use sentence case or lower case on the homepage converter. If the first letters are inverted (hELLO wORLD), run Inverse Case first, then sentence case for prose.
camelCase is the usual style for JavaScript/TypeScript variables and many JSON keys: userProfile, isActive. Convert spreadsheet headers or snake_case columns with the camelCase converter. Do not camelCase public URLs — use kebab-case slugs.
Guides
Verified CaseSwitch output for one phrase in sentence case, title case, camelCase, and slugs — including the hyphen, abbreviation, and brand cases the rules get wrong.
12 min read · 2026-10-22
Guides
Word’s Shift+F3, Docs’ Capitalization menu, Excel’s PROPER, and VS Code’s transform commands do not do the same job. Here is which command to use — and when they still get title case wrong.
12 min read · 2026-10-22
Guides
Alternating case (hElLo) is the mocking-text pattern, not a Caps Lock fix. See exactly how letters are counted, how it differs from inverse case, and when it reads as an insult.
9 min read · 2026-10-21
Guides
A strong password is long, random, and unique — then stored in a manager. Length beats P@ssw0rd. Here is what NIST recommends, what a browser generator does, and what the “Strong” label does not prove.
11 min read · 2026-10-20