Flip Caps is a free online text case converter. You paste any text into the tool, click a button, and it instantly converts your text into the case style you choose, all inside your browser with no sign-up required.

What is a text case converter?

A text case converter is a tool that changes the capitalization style of any text. Instead of manually retyping content, you paste it in and choose a style like UPPER CASE, lower case, or Title Case, and the tool transforms it for you in a single click.

What case styles does Flip Caps support?

Flip Caps supports seven case styles: Sentence case (capitalizes the first letter of each sentence), lower case (all lowercase), UPPER CASE (all capitals), Capitalized Case (first letter of every word), aLtErNaTiNg cAsE (alternates each letter), Title Case (proper title capitalization), and InVeRsE CaSe (flips existing capitalization).

Is Flip Caps free to use?

Yes. Flip Caps is completely free. There is no subscription, no sign-up, no trial, and no paywall. You can convert as much text as you want at no cost.

Is my text private when I use Flip Caps?

Yes, 100%. Flip Caps runs entirely in your browser using JavaScript. Your text is never sent to any server, never stored, and never seen by anyone. Everything happens locally on your device.

Is there a character limit?

No. Flip Caps has no character limit. You can paste an entire essay, article, email, or document and it will convert the full text without any restrictions.

Can I download the converted text?

Yes. After converting your text, click the Download button in the toolbar to save the result as a plain .txt file directly to your device.

Can I use Flip Caps as a capital text generator?

Yes. Flip Caps is a great capital text generator. Click UPPER CASE to convert every letter to a capital, or click Capitalized Case to capitalize only the first letter of each word. Both options work instantly with no character limit.

What is the difference between UPPER CASE and Capitalized Case?

UPPER CASE converts every single letter to a capital (e.g. 'hello world' becomes 'HELLO WORLD'). Capitalized Case only capitalizes the first letter of each word (e.g. 'hello world' becomes 'Hello World'). Choose UPPER CASE for emphasis or headings; choose Capitalized Case for names and branded terms.

What is Sentence case and when should I use it?

Sentence case capitalizes only the first letter of each sentence and lowercases everything else, just like normal written English. Use it to fix text that was pasted in the wrong format, or to quickly normalize inconsistently capitalized content.

What is Title Case and when should I use it?

Title Case capitalizes major words in a title while keeping short connecting words (a, an, the, and, but, or, for, in, of, etc.) in lowercase. It follows standard English title-writing conventions. Use it for article headlines, blog post titles, book chapters, and page headings.

What is alternating case?

Alternating case (aLtErNaTiNg cAsE) switches every letter between lowercase and uppercase, the first letter is lowercase, the second uppercase, the third lowercase, and so on. It is mostly used for memes, social media humor, and informal creative text.

What is Inverse case?

Inverse case (also called toggle case or flip case) swaps the capitalization of every letter, uppercase letters become lowercase and lowercase letters become uppercase. For example, 'Hello World' becomes 'hELLO wORLD'. It is useful for quickly reversing the case of text that was typed with Caps Lock accidentally on.

How do I fix text that was accidentally typed in ALL CAPS?

Paste the all-caps text into Flip Caps and click Sentence case to convert it to normal capitalization, or click lower case to make everything lowercase first. This is much faster than retyping the entire text.

Does Flip Caps work on iPhone and Android?

Yes. Flip Caps is fully responsive and works on any device, iPhone, Android, tablet, desktop, or laptop. The interface adapts to smaller screens and all case conversion buttons are touch-friendly.

Does Flip Caps require an account or sign-up?

No. Flip Caps requires no account, no sign-up, no email address, and no password. You open the website and the tool is immediately ready to use.

What browsers does Flip Caps work in?

Flip Caps works in all modern browsers including Google Chrome, Safari, Firefox, Microsoft Edge, Opera, and Brave. It requires JavaScript to be enabled, which it is by default in all browsers.

How do I copy the converted text?

After converting your text, click the Copy button in the toolbar above the text area. A confirmation checkmark appears to confirm the text has been copied to your clipboard. You can then paste it anywhere.

What is the difference between Title Case and Sentence Case?

Title Case capitalizes the first letter of every major word (used for headings and titles). Sentence Case only capitalizes the first letter of the first word in each sentence (used for normal written text). For example, 'the quick brown fox' becomes 'The Quick Brown Fox' in Title Case but 'The quick brown fox' in Sentence Case.

Add Watermark to PDF·Custom Text·Opacity Control·Free & Private·No Sign-up·Instant Download·

Add Watermark to PDF

Stamp any PDF with a custom text watermark. Control opacity, size, color, and position.

📄

Click or drag & drop a PDF

Watermark Settings

Watermark Text

Opacity: 25%

Font Size: 52pt

Color

Position

Apply to Pages

Features

Powerful watermarking, zero complexity

✏️

Custom Text

Enter any text — CONFIDENTIAL, DRAFT, your company name, or any custom phrase.

🎨

Full Customization

Control opacity, font size, color, and position to get exactly the look you need.

📄

Selective Pages

Apply the watermark to all pages, only odd pages, or only even pages.

🔒

100% Private

Your PDF never leaves your browser. All stamping is done locally with no server involved.

⚡

Instant Results

Watermarks are applied in seconds regardless of PDF length.

Frequently Asked Questions

Can I remove a watermark added by this tool?

Watermarks added by this tool are embedded in the PDF content layer. They are not a separate overlay, so they cannot be simply toggled off. Make sure you keep your original file.

What font is used for the watermark?

The watermark uses Helvetica Bold, a standard PDF font. This ensures the watermark is embedded cleanly without any external font requirements.

Are my files uploaded to a server?

No. All watermarking is done locally in your browser using pdf-lib. Your files never leave your device.

Can I control which pages get the watermark?

Yes. You can apply the watermark to all pages, odd pages only, or even pages only.

Does it work on password-protected PDFs?

Encrypted or password-protected PDFs cannot be modified. You need to unlock the PDF first.

Does this tool add a Flip Caps watermark?

No. There are no hidden watermarks from Flip Caps. The only watermark added is exactly what you specify.

All Tools

Every tool, in one place.

All tools run in your browser. No sign-up, no upload to servers, nothing stored.

Text Tools

hello world

Text Case Converter

Convert any text between 7 case styles instantly: UPPER CASE, lower case, Title Case, Sentence case, Capitalized Case, alternating case, and Inverse case.

h3ll0 w0rld!

Letter & Character Removal

Remove any specific letter, character, or symbol from text in one click. Strip numbers, punctuation, spaces, or any custom character you define.

apple
banana
apple

Duplicate Line Remover

Remove every duplicate line from a list instantly. Keep only unique lines with optional case-insensitive matching and automatic sorting.

the quick the fox

Duplicate Word Finder

Find and highlight every word that appears more than once in your text. Quickly spot and clean up repetitive writing.

great — idea

Em Dash Remover

Remove or replace em dashes instantly. Swap them for a comma, hyphen, space, or delete them entirely. Great for cleaning up AI-generated text.

well-known fact

Dash Remover

Remove or replace any type of dash: em dash, en dash, or hyphen. Choose your replacement character or strip them completely in one click.

Hello World

Find and Replace Text

Find any word or phrase and replace every occurrence across your entire text in one click. Supports plain text and case-insensitive matching.

Hello. How are you? Fine!
counting...

Sentence Counter

Count sentences, words, characters, paragraphs, and lines in any text. Get an estimated reading time based on average adult reading speed.

Hello↵
World↵
Here

Remove Line Breaks

Strip unwanted line breaks to produce a clean, flowing paragraph. Perfect for fixing copied PDF or email content with hard returns.

**Bold** and _italic_ text

Remove Text Formatting

Strip bold, italic, and all rich text formatting from pasted content. Convert any formatted text to clean plain text instantly.

snake_case_text

Remove Underscores

Replace underscores in text with a space, hyphen, or remove them entirely. Convert snake_case identifiers to human-readable words.

Hello

Reverse Text Generator

Reverse any text backwards: flip character order, reverse word order, or reverse entire line order. Results appear instantly in your browser.

Zebra
Apple
Mango

Alphabetical Order

Sort words or lines into A-Z or Z-A alphabetical order instantly. Supports duplicate removal and case-insensitive sorting.

PDF Tools

doc1
doc2
→
PDF

Merge PDF

Combine multiple PDF files into one document. Drag, drop, reorder, and merge — free and private.

PDF
→
p1
p2
p3

Split PDF

Split a PDF into individual pages or custom page ranges. Download as individual files or a ZIP archive.

Page 1
Page 2
Page 3
Page 4

Extract PDF Pages

Pick specific pages from any PDF and save them as a new document. Enter any combination of pages and ranges.

📄PDF
→
🖼️JPG

PDF to JPG

Convert every PDF page into a high-quality JPEG image. Download all pages at once as a ZIP archive.

📄PDF
→
🖼️PNG

PDF to PNG

Convert PDF pages to lossless PNG images. Perfect for presentations, web use, and image editing.

1
2
3

Add Page Numbers

Number every page of your PDF with full control over position, starting number, prefix, and suffix.

HEADER
FOOTER

Header & Footer

Add custom headers and footers to every PDF page. Supports dynamic {page} and {total} variables.

CONTENTS
Introduction1
Chapter 13
Chapter 27
Appendix12

Create a professional table of contents page and prepend it to your PDF document.

p.1
p.2
p.3

Remove Blank Pages

Auto-detect and remove blank pages from scanned documents and digital PDFs.