JSON Formatter & Validator
format and validate JSON in a browser
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{"name":"b2KIT","private":true,"tools":2769} Tool guides built from real inputs and outputs
These guides explain what each browser tool actually does. Every guide includes checked behavior, useful limits, common questions, and links to the relevant standard or primary reference, with a concrete worked example wherever the tool's behavior allows one.
2630 checked tools
15 task clusters
1556 worked examples
5329+ reference links
Task cluster
Developer and data tools
Base64 Encoder / Decoder
encode UTF-8 text as Base64 or decode Base64 text
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b2KIT URL Encoder / Decoder
percent-encode or decode a URL component
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honey & tea JWT Decoder
decode the header and payload of a JSON Web Token
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eyJhbGciOiJub25lIiwidHlwIjoiSldUIn0.eyJzdWIiOiJiZWUyIiwiaWF0IjoxNzAwMDAwMDAwfQ. UUID / GUID Generator
generate cryptographically random UUID version 4 identifiers
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Generate one lowercase UUID with dashes Unix Timestamp Converter
convert Unix seconds or milliseconds to calendar dates
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0 seconds XML to JSON Converter
convert a basic XML document into inspectable JSON
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<note id="7"><to>Bee</to><priority>high</priority></note> YAML to JSON Converter
convert common YAML configuration into JSON
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enabled: true
retries: 3
regions:
- us-east
- eu-west Task cluster
Text and writing tools
Word Counter
count words and inspect basic text statistics
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Small tools save time. Clear tools save more time. Character Counter
count Unicode characters and compare text with a length limit
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b2KIT tools Remove Duplicate Lines
remove repeated lines while preserving the first occurrence
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Bee
Honey
Bee
Honey Code Diff Viewer
compare two text or code blocks line by line
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Original:
const mode = "light";
start();
Modified:
const mode = "dark";
start(); URL Slug Generator
convert a title into a predictable URL path segment
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Cafe Muller: 10 Honey Tools! Sentence Counter
count punctuation-delimited sentences and compare their lengths
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Be clear. Test the result carefully! Ready? Line Counter
count text lines and inspect their length distribution
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alpha
beta gamma Find & Replace in Text
preview and replace literal text or regular-expression matches
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Source: bee2 BEE2 Bee2
Find: bee2
Replace: b2KIT
Case sensitive: off Add Line Numbers to Text
prepend sequential line numbers to pasted text for code snippets, logs, or documents
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apple
banana
cherry Article Outline Generator
plan an article's structure and word budget before writing
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Topic: How to start a vegetable garden
Target: 1,500 words
Audience: first-time gardeners Content Brief Generator
create an actionable article brief from keywords and competitive considerations
Open tested guideContent Gap Analyzer
find topics covered by one text but absent from another
Open tested guideEmoji Keyboard
browse emoji by Unicode group and copy any of them, skin tone and all, in one click
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Select the Medium skin tone (third of the five), then click the waving hand emoji. Fancy Text Generator
turn plain text into decorative unicode lettering
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Hello, world (bold style) Invisible Character Detector & Remover
find and strip invisible unicode characters from text before validation, search or comparison
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This is a\u200B test. Keyword Extractor
find the keywords and phrases that carry the meaning of a pasted block of text
Open tested guideMarkdown Table Generator
build a markdown table in a visual grid and copy out the generated pipe-and-dash syntax
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Grid built by clicking and typing: header row "Product | Price | In Stock", body row 1 "Widget | 9.99 | yes", body row 2 "Gadget | 24.50 | no", with center alignment applied to the Price column. N-Gram Analyzer
see which words and consecutive word sequences recur most often in your text
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The cat sat on the mat. The cat sat. Online Notepad
draft plain-text notes that auto-save in the browser, with live word count and markdown preview
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The quick brown fox jumps over the lazy dog. Page Word Count Tool
count the visible words of an HTML page, excluding its navigation, header, and footer regions
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<!DOCTYPE html>
<html>
<head><title>Sample page</title></head>
<body>
<nav>Home About Contact</nav>
<main>
<h1>Five words in this heading</h1>
<p>The quick brown fox jumps over the lazy dog.</p>
<p>Second paragraph with four words here.</p>
</main>
<footer>Copyright 2026 Example Corp. All rights reserved.</footer>
</body>
</html> Paragraph Numbering Tool
number or bullet the paragraphs of a pasted text block, or label them with a custom prefix
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First paragraph. It can span multiple lines of text.
Second paragraph.
Third paragraph. Reverse Text Generator
reverse text by character, by word, or into upside-down Unicode
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desserts Rich Text Editor
format text with bold, italic, lists, headings, and links, then export it as HTML or plain text
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Q3 revenue rose 12% year over year. Sentence Structure Analyzer
check sentence variety, length spread, and repeated opening words in your writing
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She writes clearly. The report was long, and it took hours. Because the deadline loomed, she worked late. She writes every morning. Sort Lines Tool
sort a pasted list of lines alphabetically, numerically, by length, or in reverse order
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10
9
8
2
1 Special Characters Reference
browse and copy special characters, symbols, arrows, math operators, and currency signs organized by category
Example input
Browse to the 'Currency signs' category Speech to Text Transcriber
transcribe speech from your microphone into text as you talk
Open tested guideStop Words Remover
remove common stop words from pasted text before keyword or frequency analysis
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The quick brown fox jumps over the lazy dog Text Cleaner
strip extra whitespace and normalize line breaks in messy pasted text
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Paste this text with extra spaces. Text Diff & 3-Way Merger
merge two edited versions of a document against a shared base, resolving conflicts by click
Example input
Base:
The cat sat
on the mat
in the sun
Version A:
The cat slept
on the mat
in the sun
Version B:
The cat dozed
on the mat
in the rain Text Diff Comparison Tool
use this to see exactly where two text blocks differ
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[object Object] Advanced Text Line Sorter
sort pasted text lines alphabetically, numerically, by length, or by a chosen column
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orange
banana
apple
kiwi Text Overlay Preview
preview how text will look on top of an image before using it
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Image: a 1600 x 1000 px beach photo. Text: 'SUMMER SALE'. Settings: Arial, 50 px, white, bottom-center. Text Repeater
repeat any text or emoji a chosen number of times with a separator or line break between copies
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Text: "ha" Count: 5 Separator: ", " Text Statistics Tool
get a full readout of a text's words, sentences, syllables, vocabulary richness, and grade level
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A quick brown fox jumps over the lazy dog. Text to ASCII Art Generator
make large monospace text banners from plain text for terminals, chat, and documents
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H Text to Handwriting Image
turn typed text into a handwriting-style image on lined paper for download
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Dear Ms. Chen, thank you for the interview on Thursday. I look forward to hearing from you. Best, Alex Rivera Text to URL Slug Converter
turn any text into a URL-safe slug for links, routes, and filenames
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The 3 Best Cafés in München - 2026 Guide! Text to Slug / URL Converter
turn any text into a URL-safe slug with a separator you choose
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Top 10 Ways to Write Better Blog Posts, Fast! Text to Speech Player
hear pasted text read aloud with adjustable voice, speed, and pitch
Example input
The quick brown fox jumps over the lazy dog. Unicode Character Map
find and copy a Unicode symbol you cannot type on your keyboard
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Click the euro sign in the Currency Symbols section. Word & Character Counter
count words, characters, sentences, and paragraphs before submitting or publishing text
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Don't count words by hand. The tool does it instantly. Word Frequency Counter
find which words a block of text repeats most often and how many times each appears
Example input
The quick brown fox jumps over the lazy dog. The dog sleeps, the fox watches. Task cluster
Design and color tools
HEX to RGB Converter
convert a CSS HEX color to RGB and HSL values
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#C49000 Color Picker + HEX/RGB/HSL/CMYK
edit one color across HEX, RGB, HSL, and CMYK-style values
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#C49000 Accessible Color Palette Generator
measure WCAG contrast for a text and background color pair
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Text #000000 on background #FFFFFF Aspect Ratio Calculator
reduce dimensions to an aspect ratio and scale them proportionally
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Width 1920, height 1080 QR Code Generator
create a downloadable QR code for short browser-generated data
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https://b2kit.com/ CSS Gradient Generator
build linear, radial, or conic CSS gradients visually
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Linear, 90 degrees, #C49000 at 0%, #111117 at 100% Box Shadow CSS Generator
compose and preview CSS box-shadow layers
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x 4px, y 4px, blur 16px, spread 0px, black at 25% opacity Color Palette Generator
derive common hue-based palette relationships from one color
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Base #FF0000 Task cluster
Math and conversion tools
Percentage Calculator
calculate a percentage, percentage share, or percentage change
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What is 25% of 80? Ratio Calculator
simplify a ratio and solve a direct proportion
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Ratio 4:6 and equivalent ratio 10:? Date Difference Calculator
measure calendar and elapsed-day differences between two dates
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Start 2026-07-01; end 2026-07-30 Time Duration Calculator
add or subtract two hour-minute-second durations
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Duration A 1h 45m 0s; add Duration B 2h 30m 0s Fraction Calculator
add, subtract, multiply, or divide two fractions and simplify the result
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2/3 + 1/6 Temperature Converter
convert temperature between Celsius, Fahrenheit, and kelvin
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20 degrees Celsius Area Converter
convert common metric and imperial area units
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1 acre Roman Numeral Converter
convert integers from 1 through 3999 to canonical Roman numerals and back
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2026