Text Tools

Count, convert, format and compare text — instantly, in your browser.

🔒 Everything runs in your browser — nothing is uploaded

Word Counter

Count words, characters, sentences and paragraphs instantly.

Case Converter

Convert text to upper, lower, title, sentence and more cases.

Text Diff

Compare two texts and highlight the differences line by line.

Markdown to HTML

Convert Markdown into clean HTML you can copy and reuse.

CSV to JSON

Turn CSV data into structured JSON right in your browser.

JSON Formatter

Beautify, validate and minify JSON with instant feedback.

Reverse Text

Reverse text by characters, words or lines in one click.

Sort Lines

Sort lines alphabetically, numerically or reverse order.

Find and Replace

Find and replace text with plain or regex matching instantly.

Lorem Ipsum Generator

Generate placeholder Lorem Ipsum paragraphs, sentences or words.

Remove Duplicate Lines

Remove duplicate lines and keep your text clean and unique.

Text Repeater

Repeat any text or line as many times as you need.

Binary to Text

Convert text to binary and decode binary back to text.

Whitespace Remover

Remove extra spaces, tabs and blank lines from your text.

Morse Code Translator

Translate text to Morse code and decode Morse back to text.

Remove Accents

Strip accents and diacritics to get plain ASCII text.

NATO Phonetic Alphabet

Spell out text using the NATO phonetic alphabet instantly.

HTML to Markdown

Convert HTML into clean Markdown — headings, lists, links, tables.

Fancy Text Generator

Turn text into bold, cursive, bubble and 15+ Unicode fonts, copied in one tap.

Readability Checker

Paste text to get its Flesch Reading Ease score, reading level and grade-level indices instantly.

Keyword Density Checker

See which words and phrases you use most, ranked by count and density — for SEO and content writing.

Free online text tools that run in your browser

Our collection of free text tools helps you count, format, convert and compare text without any downloads or sign-ups. Whether you need a quick word count, want to tidy up messy JSON, change letter case, diff two drafts, or convert between CSV, JSON, Markdown and HTML, every utility is just a paste away.

Best of all, these tools are privacy-first. There are no uploads — everything is processed in-browser on your own device, so your content never touches a server. The interface is fully mobile-friendly and works offline once loaded, giving you fast, secure text editing wherever you are.

Frequently Asked Questions

Are the text tools free and private to use? ▼
Yes. Every text tool on Sailwynd Tools is completely free with no sign-up, and it's private by design. All processing happens locally in your browser using JavaScript — your text is never sent to a server, so nobody else can see what you paste.
Does my text get uploaded anywhere? ▼
No. Nothing you type or paste ever leaves your device. There are no uploads, no accounts and no analytics on your content — the tools read your input in the browser, transform it on the spot, and forget it as soon as you close the tab.
What can I do with the text tools? ▼
Plenty. You can count words and characters, format and validate JSON, convert text case (upper, lower, title, sentence), compare two texts with a diff, convert between CSV and JSON, and turn Markdown into HTML or back again — all in a few clicks.
Do the text tools work offline and on mobile? ▼
Yes to both. Because the tools run entirely client-side, they keep working once the page has loaded even if your connection drops. The layout is fully responsive too, so counting, formatting and converting text works just as well on a phone or tablet as on a desktop.
Are there any length or file-size limits? ▼
There's no fixed cap — the only limit is your device's memory. Since the work happens on your own machine rather than a shared server, you can paste large documents or JSON payloads, though very large inputs may process a little more slowly on older phones.
Is it safe to paste sensitive or confidential text? ▼
It's much safer than typical online tools because your text stays on your device and is never transmitted or stored. That said, treat any shared or public computer with care, and clear the field when you're done for peace of mind.