Tool library

Explore all tools

Browse every developer utility in one place. Search by name, description, or category to jump straight into the tool you need.

136 of 136 tools

json

JSON Formatter

Format and beautify JSON

json

JSON Validator

Validate JSON input

json

JSON Minifier

Minify JSON

json

JSON Compare

Compare two JSON documents side by side and highlight differences

json

JSON to CSV

Convert JSON to CSV

json

JSON to XML

Convert JSON to XML

json

JSON to YAML

Convert JSON to YAML

json

JSON Keys Extractor

Extract all keys from JSON

json

JSON Size Calculator

Calculate JSON size

base64

Base64 Decoder

Decode Base64 to text

base64

Base64 Encoder

Encode text to Base64

base64

Base64URL Decoder

Decode URL-safe Base64 to text

base64

Base64URL Encoder

Encode text to URL-safe Base64

base64

Base64 to Image Preview

Preview an image from a Base64 data URL

jwt

JWT Decoder

Decode JWT payload

jwt

JWT Header Decoder

Decode JWT header

regex

Regex Tester

Test a regex pattern from line 1 against the remaining text

regex

Regex Replace

Replace matches using line 1 pattern, line 2 replacement, and the remaining text

regex

Regex Validator

Validate a regular expression

regex

Regex Match Extractor

Extract regex matches using line 1 pattern and the remaining text

regex

Email Extractor

Extract email addresses from text

regex

URL Extractor

Extract URLs from text

regex

Phone Extractor

Extract phone numbers from text

regex

Regex Escape

Escape special regex characters

uuid

UUID Generator

Generate a UUID

uuid

UUID Validator

Validate UUID strings

url

URL Parser

Break a URL into readable parts

url

URL Decoder

Decode URL-encoded text

url

URL Encoder

Encode text for URLs

url

Query String Parser

Convert a query string to JSON

url

Query String Builder

Convert JSON to a query string

url

URL to Base64

Fetch an image URL and convert it into Base64

password

Password Strength Checker

Analyze password strength, entropy, and common risk patterns

password

Strong Password Generator

Generate strong high-entropy passwords with required character variety

password

Random Password Generator

Generate configurable passwords with secure browser randomness

password

PIN Generator

Generate numeric PINs with secure browser randomness

hash

SHA256 Hash Tool

Generate and verify SHA-256 digests for integrity workflows

hash

MD5 Hash Tool

Generate and verify MD5 digests for legacy checksum workflows

hash

Bcrypt Hash Tool

Generate and verify bcrypt password hashes with configurable cost factors

hash

SHA512 Hash Tool

Generate and verify SHA-512 digests for long-form integrity workflows

hash

SHA1 Hash Tool

Generate and verify SHA-1 digests for legacy interoperability workflows

hash

HMAC Generator

Generate and verify keyed HMAC digests for signed message workflows

hash

File Hash Checker

Hash uploaded files in the browser and compare them against known checksums

hash

Hash Compare

Hash plain text and compare it against an expected digest

hash

CRC32 Checksum

Generate and verify CRC32 checksums for non-cryptographic integrity checks

sql

SQL Formatter

Format SQL queries for easier reading

sql

SQL Minifier

Minify SQL queries

csv

CSV to JSON

Convert CSV data into a JSON array

csv

CSV Formatter

Format and normalize CSV while preserving quoted values

csv

CSV Validator

Validate CSV row and column consistency

xml

XML Formatter

Format and beautify XML with proper indentation

xml

XML Validator

Validate XML syntax and report line-level errors

xml

XML to JSON

Convert XML to formatted JSON

yaml

YAML Formatter

Format YAML with standardized indentation

yaml

YAML Validator

Validate YAML syntax and structure

yaml

YAML to JSON

Convert YAML to formatted JSON

markdown

Markdown Preview

Render Markdown as HTML output

markdown

Markdown to HTML

Convert Markdown into HTML

markdown

Markdown Formatter

Clean up Markdown spacing

markdown

Markdown Table Generator

Build Markdown tables with editable rows, columns, alignment, and CSV import

markdown

Markdown Link Generator

Generate a Markdown link from line 1 text and line 2 URL

markdown

Markdown List Generator

Turn plain lines into a Markdown list

markdown

Markdown Image Generator

Generate a Markdown image from line 1 alt text and line 2 URL

date

Date to Timestamp

Convert a date into a Unix timestamp

date

Days Between Dates

Calculate the number of days between two dates

date

Time Duration Calculator

Calculate the duration between two dates

date

Timezone Converter

Show UTC and local time for a date value

date

Age Calculator

Calculate age from birth date

date

ISO Date Formatter

Convert a date into ISO 8601 format

color

Color Picker

Pick a color and inspect the selected value

color

HEX to RGB

Convert HEX colors to RGB

color

RGB to HEX

Convert RGB colors to HEX

color

RGB to HSL

Convert RGB colors to HSL

color

HSL to RGB

Convert HSL colors to RGB

color

RGB to CMYK

Convert RGB colors to CMYK

color

Color Name to Code

Convert named colors into Hex, RGB, HSL, CMYK, and HCL

color

Tailwind Color Palette Generator

Browse a small Tailwind-style color palette preview

css

CSS Formatter

Format CSS code for easier reading

css

CSS Minifier

Minify CSS code

css

Border Radius Generator

Create CSS border-radius values with a live preview

css

Box Shadow Generator

Create CSS box-shadow values with a live preview

css

Gradient Generator

Create linear gradients with a live preview

css

Clip Path Generator

Create CSS clip-path values with a live preview

css

CSS Unit Converter

Convert between px, rem, em, vh, vw, pt, pc, and percent

css

CSS Color Extractor

Extract colors from CSS

css

CSS Property Extractor

Extract CSS properties

text

Word Counter

Count words in text

text

Character Counter

Count all characters

text

Character Counter Without Spaces

Count characters excluding spaces

text

Sentence Counter

Count sentences in text

text

Line Counter

Count lines in text

text

Paragraph Counter

Count paragraphs in text

text

Reading Time Calculator

Estimate reading time

text

Average Word Length

Calculate average word length

text

Frequent Words

Extract the most frequent words

text

Remove Empty Lines

Remove blank lines from text

text

Remove Punctuation

Remove punctuation from text

text

Random Text Generator

Generate random alphanumeric text with secure browser randomness

text

Text to Hex

Convert text to hexadecimal

string

Uppercase Converter

Convert text to uppercase

string

Lowercase Converter

Convert text to lowercase

string

Sentence Case Converter

Convert text to sentence case

string

Capitalize Words

Capitalize each word

string

Reverse String

Reverse the input text

string

Random String Generator

Generate a random alphanumeric string with secure browser randomness

number

Percentage Calculator

Calculate what percentage one number is of another

number

Percentage Change Calculator

Calculate percentage increase or decrease between two values

number

Average Calculator

Calculate the average of a number list

number

Decimal to Binary

Convert decimal numbers to binary

number

Prime Number Checker

Check whether an integer is a prime number

number

Factorial Calculator

Calculate the factorial of a non-negative integer

number

Roman Numeral Converter

Convert numbers to Roman numerals and Roman numerals to numbers

html

HTML Encoder

Encode HTML entities

html

HTML Decoder

Decode HTML entities

html

HTML to Markdown

Convert HTML into Markdown

svg

SVG Preview

Preview raw SVG markup in the browser

svg

SVG to JSX

Convert SVG markup to JSX for React

svg

SVG to CSS

Convert SVG to CSS background-image

svg

SVG to Data URI

Convert SVG markup to a URL-encoded data URI

svg

SVG Minifier

Minify SVG markup by removing comments and extra whitespace

image

Image to Base64

Convert an uploaded image into a Base64 data URL

seo

Open Graph Generator

Generate Open Graph meta tags from structured page metadata

slug

Slug Generator

Convert text to a URL slug

unicode

Unicode Decoder

Decode Unicode escape sequences

unicode

Unicode Encoder

Encode text as Unicode escape sequences

ascii

ASCII Decoder

Convert ASCII codes to text

ascii

ASCII Encoder

Convert text to ASCII codes

binary

Binary Decoder

Convert binary to text

binary

Binary Encoder

Convert text to binary

binary

Binary to Decimal

Convert binary numbers to decimal

hex

Hex to Text

Convert hexadecimal to text

rot13

ROT Encoder

Encode text with ROT13, ROT5, ROT18, ROT47, and custom Caesar shifts

rot13

ROT Decoder

Decode ROT13, ROT5, ROT18, ROT47, and inspect Caesar shifts

timestamp

Timestamp to Date

Convert timestamp to UTC date

timestamp

Timestamp to Local Date

Convert timestamp to local date

timestamp

Unix Timestamp Generator

Generate current timestamp