Audio
Developer
Markdown Preview
Live Markdown editor and preview. Write Markdown on the left, see HTML on the right.
JSON Formatter
Format, validate and minify JSON. Catches syntax errors with helpful messages.
Base64 Encode / Decode
Convert text to Base64 and back, with full UTF-8 support.
URL Encoder / Decoder
Percent-encode and decode strings for safe use in URLs and query parameters.
HTML Encoder / Decoder
Escape HTML entities or decode them back to render code safely on a page.
UUID Generator
Generate RFC 4122 v4 UUIDs in bulk for testing and development.
Color Picker & Converter
Pick a color and convert between HEX, RGB, HSL with one-click copy.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates in any timezone.
Generators
Security
Text
Word Counter
Count words, characters, sentences, paragraphs and reading time in any text — instantly and free.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, aLtErNaTe and iNVERSE.
Find & Replace
Multi-line find and replace with case sensitivity, whole word and regex support.
Line Tools
Sort, reverse, deduplicate, trim and number lines in any list.
Slug Generator
Convert any title to a clean, SEO-friendly URL slug in one click.
Text Diff Checker
Compare two pieces of text and highlight added or removed lines.
Reverse Text
Reverse characters, words or whole lines instantly.
Why these tools?
Every tool runs entirely in your browser. No signup, no upload, no tracking of the text you paste. They are designed to complement the free online notepad so you can switch between writing notes and processing them in seconds.
Looking for something specific? Open the free online notepad, browse the browser notepad guide or the online text editor.