All tools

JSON Formatter data

Format and indent your JSON instantly

json formatter pretty print

JSON Validator data

Check whether your JSON is syntactically valid

json validator syntax

JSON Minify data

Compress your JSON by removing unnecessary whitespace

json minify compress

Word Counter text

Count words, characters, sentences and reading time

word counter character count reading time

Case Converter text

Convert text case: UPPER, lower, Title, camelCase, snake_case

case converter uppercase camelCase

Remove Duplicates text

Remove duplicate lines from a list

remove duplicates deduplicate unique lines

Slug Generator text

Generate URL-friendly slugs from any text

slug url seo

Text Diff text

Compare two texts and visualize the differences

text diff compare difference

JSON to CSV data

Convert JSON to CSV

json to csv convert data

JSON to XML data

Convert JSON to XML

json to xml convert data

JSON to YAML data

Convert JSON to YAML

json to yaml convert config

YAML to JSON data

Convert YAML to JSON

yaml to json convert config

JSON to TOML data

Convert JSON to TOML

json to toml convert config

TOML to JSON data

Convert TOML to JSON

toml to json convert config

CSV to JSON data

Convert a CSV file to JSON instantly

csv to json convert data

XML to JSON data

Convert XML to structured JSON

xml to json convert data

Base64 Encode/Decode encoding

Encode or decode text to/from Base64

base64 encode decode

URL Encode/Decode encoding

Encode or decode strings for use in URLs

url encode percent encoding decode

HTML Encode/Decode encoding

Encode or decode HTML entities

html entities escape encode

Hash Generator security

Compute MD5, SHA-1, SHA-256 and SHA-512 hashes of text

hash generator md5 sha256

Password Generator security

Generate strong, random passwords

password generator strong password random

UUID Generator security

Generate random UUID v4 identifiers

uuid generator guid random id

Timestamp Converter dev

Convert Unix timestamps to readable dates and back

timestamp converter unix time date

Cron Parser dev

Parse a cron expression and preview the next execution times

cron parser cron expression scheduler

Regex Tester dev

Test regular expressions with highlighted match visualization

regex tester regular expression match

HTTP Header Viewer dev

Inspect the HTTP response headers of any public URL

http headers response headers inspect

JSON ↔ YAML data

Convert JSON to YAML and back

json to yaml yaml to json convert

TOML ↔ JSON data

Convert TOML to JSON and back

toml to json json to toml convert

Markdown Preview text

Write Markdown and preview the rendered output in real time

markdown preview live preview renderer

Lorem Ipsum Generator text

Generate Lorem Ipsum placeholder text for your mockups

lorem ipsum placeholder text dummy text

Text Formatter text

Sort, clean and reorganize your text

text formatter sort lines clean text

JWT Decoder security

Decode and verify JWT signatures directly in your browser

jwt decoder token signature verification

Number Base Converter dev

Convert numbers between binary, octal, decimal and hexadecimal

base converter binary hexadecimal

Color Converter dev

Convert colors between HEX, RGB and HSL formats

color converter hex to rgb hsl

QR Code Generator dev

Generate a QR code from text or a URL

qr code generator qr code url

Cross Multiply math

Calculate cross multiplication instantly

cross multiply proportion ratio

Percentages math

Calculate percentages: X% of Y, proportion, variation

percentage calculate percent

Unit Converter math

Convert between units of length, weight, temperature, volume and area

unit converter length weight

Timesheet productivity

Track your hours: multiple segments per day, auto totals, export and print

timesheet work hours time tracker

Day Counter productivity

Calculate the number of days between two dates or until a date

day counter days between dates countdown

Timer / Stopwatch productivity

Stopwatch and countdown timer with sound alert

timer stopwatch countdown

Pomodoro productivity

Pomodoro timer: 25 minutes of focus, 5 minutes of break

pomodoro productivity focus

Todo List productivity

Simple task list with local and online saving

todo list tasks productivity

Notes productivity

Simple notepad with local and online saving

notes notepad memo

Calendar productivity

Personal calendar with events. Login required

calendar events planning

Random Wheel random

Spin the wheel for a random choice among your options

random wheel spin wheel random choice

Random Draw random

Randomly draw one or more items from a list

random draw random picker lottery

Name Generator random

Generate random names for projects, teams or usernames

name generator random name username

Image Compressor image

Compress your PNG, JPG and WebP images directly in the browser

image compressor compress image png

Image Converter image

Convert your images between PNG, JPG and WebP

image converter convert image png

Favicon Generator image

Generate a multi-size favicon from an image

favicon generator favicon ico

JSON to TypeScript dev

Generate TypeScript interfaces from JSON

json to typescript typescript interface type generation

JSON to Go Struct dev

Generate Go structs from JSON

json to go go struct golang

Meta Tag Generator dev

Generate HTML meta tags for SEO and social networks

meta tag generator seo open graph

IP Lookup dev

Show your public IP address and its details

ip lookup ip address geolocation

Scientific Calculator math

Scientific calculator with advanced functions

scientific calculator sin cos

Statistics math

Calculate mean, median, mode, standard deviation and more

statistics mean median

Emoji Picker text

Search and copy emojis in one click

emoji picker emoji copy emoji

Universal Converter data

Convert between JSON, YAML, TOML, CSV and XML

universal converter json yaml

Secret Note sharing

Share an encrypted message: expiry, self-destruct and optional password

secret note self-destructing note privnote alternative

File Drop sharing

Upload a file and get an anonymous download link

file upload file share anonymous download

Token Counter dev

Estimate the number of LLM tokens in a prompt (GPT, Claude)

token counter llm tokens gpt tokens

Image to Base64 image

Convert an image to a Base64 data URI (CSS, img tag)

image to base64 data uri base64 image

IBAN / SIRET / VAT Validator dev

Check an IBAN, a French SIRET/SIREN or VAT number

iban validator iban checker vat number validator

JSON Repair data

Fix broken JSON and reformat it

json repair fix json repair json online

CSS Gradient Generator dev

Build multi-color CSS gradients (linear, radial, conic)

css gradient generator gradient multi color gradient

SVG Optimizer image

Clean up and shrink an SVG file

svg optimizer svg minifier clean svg

OG Image Generator image

Create a 1200×630 social share image as PNG

og image generator open graph image social preview image

Programmer Converter dev

Hex, binary, int64, float and ASCII with endianness

hex converter hex to decimal int64 converter

Resize Image image

Upscale or downscale an image (px or %)

resize image image resizer scale image

Code Editor dev

Edit a folder from your PC in the browser - local and private

online code editor browser ide vscode online

Photo Watermark image

Add a text, IP or logo watermark to your images

photo watermark add watermark watermark image online

Password Card security

Generate a paper card/matrix to note your passwords safely

password card password grid password matrix

Vigenère Cipher security

Encrypt and decrypt with Vigenère, Beaufort and autokey

vigenere vigenère cipher polyalphabetic cipher

Caesar Cipher security

Caesar shift, ROT13, ROT47 and automatic brute-force

caesar cipher rot13 rot47

Atbash Cipher security

The Atbash cipher: A↔Z, B↔Y… alphabet reversal

atbash atbash cipher alphabet reversal

Morse Code security

Translate text ↔ morse, with sound playback

morse morse code morse translator

Bacon Cipher security

Bacon's biliteral cipher (5-symbol a/b codes)

bacon cipher baconian biliteral

Rail Fence Cipher security

Zigzag transposition cipher

rail fence zigzag cipher transposition

Playfair Cipher security

Digraph cipher with a 5×5 key square

playfair playfair cipher digraph

Monoalphabetic Substitution security

Encrypt or crack a substitution cryptogram

substitution cipher cryptogram solver monoalphabetic

Frequency Analysis security

Letter, bigram and trigram frequency

frequency analysis letter frequency cryptanalysis

Polybius Square security

Encode each letter as coordinates on a 5×5 grid

polybius polybius square 5x5 grid

A1Z26 Cipher security

Convert letters to their rank (A=1, Z=26)

a1z26 letter to number alphabet rank

Affine Cipher security

(a·x+b) mod 26 cipher with modular inverse

affine cipher modular modular inverse

Gronsfeld Cipher security

Vigenère variant with a numeric key

gronsfeld numeric vigenere digit key

Base32 Encode/Decode encoding

Encode or decode text to/from Base32 (RFC 4648)

base32 encode decode

Base58 Encode/Decode encoding

Encode or decode with Base58 (Bitcoin alphabet)

base58 bitcoin encode

Hill Cipher security

2×2 matrix cipher modulo 26

hill cipher matrix cipher linear algebra

Box-Shadow Generator dev

Build multi-layer CSS shadows with a live preview

box shadow generator css shadow multiple box shadow

Markdown Table Generator text

Build a Markdown table visually

markdown table table generator github table

Discord Text Formatter text

Bold, ANSI colors… with a Discord preview

discord formatter discord color text discord ansi

Fancy Text (Unicode) text

Turn text into Unicode styles

fancy text unicode text instagram fonts

WhatsApp Link Generator dev

wa.me click-to-chat link + QR

whatsapp link wa.me click to chat

curl to Code dev

Convert curl to fetch, axios, Python, Go…

curl to code curl to python curl to fetch

chmod Calculator dev

Unix permissions: octal 755 ↔ symbolic rwx

chmod calculator linux permissions 755

SQL Formatter dev

Format and indent your SQL queries

sql formatter sql beautifier format sql

HTML to Markdown text

Convert HTML to clean Markdown

html to markdown convert html markdown

CSS Minifier dev

Minify your CSS

css minifier minify css compress css

Barcode Generator dev

Create EAN, UPC, Code128 barcodes…

barcode generator ean13 code128

bcrypt Generator security

Hash and verify a password with bcrypt

bcrypt generator bcrypt hash verify bcrypt

List Compare text

Compare two lists (common, unique, union)

list compare compare lists set intersection

UTM Builder dev

Build UTM campaign links + QR

utm builder campaign url builder utm generator

XML Formatter data

Beautify or minify XML

xml formatter xml beautifier format xml

YAML Validator data

Check whether YAML is valid

yaml validator yaml lint validate yaml

JS Object to JSON data

Convert a JS object to valid JSON

js object to json javascript object to json

Image to PDF image

Convert images to a PDF

image to pdf jpg to pdf png to pdf

Base64 to Image image

Decode Base64 into an image

base64 to image data uri to image decode base64 image

Crontab Builder dev

Build a cron expression visually

crontab builder cron generator cron expression

Base64 to PDF image

Decode Base64 into a PDF file

base64 to pdf decode base64 pdf data uri to pdf

LinkedIn Post Formatter text

Bold/italic LinkedIn posts (Unicode) with bullets and a counter

linkedin post formatter linkedin bold text linkedin text formatter

JavaScript Minifier dev

Minify or beautify JavaScript with Terser

javascript minifier minify js js compressor

Binary to Text encoding

Convert text ↔ binary ↔ hex (UTF-8)

binary to text text to binary binary translator

Color Picker dev

Palettes, harmonies, shades and WCAG contrast from one color

color picker color palette generator wcag contrast checker

Excel Filter data

Import an Excel/CSV, filter, sort, hide columns, export CSV

excel filter filter xlsx online sort excel

Htaccess Generator dev

Generate an Apache .htaccess (HTTPS, redirects, security, cache)

htaccess generator 301 redirect htaccess force https htaccess

YouTube Timestamp Generator productivity

Create formatted chapters/timestamps for a YouTube description

youtube timestamp generator youtube chapters video timestamp links

EML to HTML dev

Open an .eml file: headers, sanitized HTML body, attachments

eml to html open eml file view eml online

PDF to Word image

Extract a PDF's text into an editable .docx

pdf to word pdf to docx convert pdf to word

CSS Gradient Generator dev

Create CSS gradients (linear/radial/conic) with live preview, CSS + Tailwind export

css gradient generator gradient generator linear gradient

All 120 free online tools