Your everyday technical toolbox,
and your data stays with you

Bold, ANSI colors… with a Discord preview

Generate strong, random passwords

Test regular expressions with highlighted match visualization

Caesar shift, ROT13, ROT47 and automatic brute-force

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

Write Markdown and preview the rendered output in real time

Generate random names for projects, teams or usernames

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

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

Build a cron expression visually

Generate a QR code from text or a URL

Show your public IP address and its details

Generate random UUID v4 identifiers

Count words, characters, sentences and reading time

Create EAN, UPC, Code128 barcodes…

Palettes, harmonies, shades and WCAG contrast from one color

Letter, bigram and trigram frequency

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

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

Encrypt and decrypt with Vigenère, Beaufort and autokey

Translate text ↔ morse, with sound playback

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

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

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

Hash and verify a password with bcrypt

Calculate mean, median, mode, standard deviation and more

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

Compress your JSON by removing unnecessary whitespace

Generate Lorem Ipsum placeholder text for your mockups

Spin the wheel for a random choice among your options

Minify or beautify JavaScript with Terser

Search and copy emojis in one click

Upload a file and get an anonymous download link

Generate a paper card/matrix to note your passwords safely

Zigzag transposition cipher

2×2 matrix cipher modulo 26

Build a Markdown table visually

Convert curl to fetch, axios, Python, Go…

Format and indent your JSON instantly

Convert XML to structured JSON

Convert colors between HEX, RGB and HSL formats

Calculate cross multiplication instantly

Stopwatch and countdown timer with sound alert

Convert your images between PNG, JPG and WebP

Encode or decode with Base58 (Bitcoin alphabet)

Turn text into Unicode styles

wa.me click-to-chat link + QR

Unix permissions: octal 755 ↔ symbolic rwx

Format and indent your SQL queries

Convert HTML to clean Markdown

Compare two lists (common, unique, union)

Build UTM campaign links + QR

Beautify or minify XML

Convert a JS object to valid JSON

Generate URL-friendly slugs from any text

Convert JSON to CSV

Convert a CSV file to JSON instantly

Convert TOML to JSON and back

Convert numbers between binary, octal, decimal and hexadecimal

Personal calendar with events. Login required

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

Generate a multi-size favicon from an image

Fix broken JSON and reformat it

Hex, binary, int64, float and ASCII with endianness

Add a text, IP or logo watermark to your images

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

Digraph cipher with a 5×5 key square

Encode each letter as coordinates on a 5×5 grid

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

Vigenère variant with a numeric key

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

Minify your CSS

Check whether YAML is valid

Decode Base64 into an image

Convert text ↔ binary ↔ hex (UTF-8)

Check whether your JSON is syntactically valid

Remove duplicate lines from a list

Compare two texts and visualize the differences

Convert JSON to XML

Convert JSON to YAML

Convert YAML to JSON

Convert JSON to TOML

Convert TOML to JSON

Encode or decode text to/from Base64

Encode or decode strings for use in URLs

Encode or decode HTML entities

Convert Unix timestamps to readable dates and back

Parse a cron expression and preview the next execution times

Inspect the HTTP response headers of any public URL

Convert JSON to YAML and back

Sort, clean and reorganize your text

Decode and verify JWT signatures directly in your browser

Calculate percentages: X% of Y, proportion, variation

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

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

Simple task list with local and online saving

Simple notepad with local and online saving

Randomly draw one or more items from a list

Generate TypeScript interfaces from JSON

Generate Go structs from JSON

Generate HTML meta tags for SEO and social networks

Scientific calculator with advanced functions

Convert between JSON, YAML, TOML, CSV and XML

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

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

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

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

Clean up and shrink an SVG file

Create a 1200×630 social share image as PNG

Upscale or downscale an image (px or %)

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

Encrypt or crack a substitution cryptogram

Build multi-layer CSS shadows with a live preview

Convert images to a PDF

Decode Base64 into a PDF file

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

Create formatted chapters/timestamps for a YouTube description

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

Extract a PDF's text into an editable .docx

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