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Data & Text Tools

44 free tools — everything runs in your browser, nothing uploaded.

Data & Text

Image Resize Calculator

Calculate new dimensions while preserving aspect ratio

 Data & Text

Password Strength Checker

Analyze password entropy and weaknesses

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YAML ↔ JSON Converter

Convert between YAML and JSON

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JSON to YAML

Convert JSON to YAML format

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JSON Schema Generator

Infer JSON Schema from data

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JSON Minifier

Compress JSON by removing whitespace

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Unit Converter

Convert length, weight, temperature & volume

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Text Repeater

Repeat any text N times with a separator

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JSON Formatter & Validator

Pretty-print & validate JSON

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Base64 Encode / Decode

Base64 text converter

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Morse Code Converter

Text ↔ Morse, with audio playback

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Number to Words

Convert numbers to English words

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Case Converter

UPPER, lower, camelCase…

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JSON to CSV Converter

Export JSON arrays as CSV

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JSON to TypeScript

Generate TypeScript interfaces

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SQL Formatter

Beautify & minify SQL queries

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JSON Diff

Compare two JSON objects

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Roman Numeral Converter

Integer ⇄ Roman numerals

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Binary ↔ Text Converter

Text to binary and back

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Markdown Table Generator

CSV → Markdown or HTML table

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Number Base Converter

Decimal, Hex, Binary, Octal

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Hash Generator

SHA-1, SHA-256, SHA-512 online

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List Sorter & Deduplicator

Sort, dedupe & shuffle lines

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Text to Speech

Convert text to audio using your browser

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Text Statistics

Words, chars, reading time & more

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Unix Timestamp Converter

Timestamp ↔ human-readable date

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URL Parser

Break a URL into protocol, host, path, params, fragment

 Data & Text

SQL Query Builder

Build SELECT queries visually

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IP Address Info

Parse IPv4/IPv6: binary, class, CIDR, private/public

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Byte / Bit Converter

Convert between bytes, KB, MB, GB, TB

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String Escape / Unescape

Escape or unescape strings for JS, HTML, URL, SQL

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Line Counter

Count, number, and filter lines in any text

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Duplicate Line Remover

Remove duplicate lines from text

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Aspect Ratio Calculator

Calculate & compare image aspect ratios

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cURL to Fetch Converter

Convert curl to JS fetch / axios

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Word Frequency Counter

Analyze word and phrase frequency

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JSON to SQL INSERT

JSON array → INSERT statements

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Email Address Validator

Validate email format & anatomy

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URL Encoder / Decoder

Encode & decode URLs and query strings

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Text Diff Viewer

Compare two blocks of text

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Number Formatter

Commas, currency, scientific notation

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JSONPath Tester

Query JSON with JSONPath expressions

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JWT Decoder

Decode & inspect JWT tokens

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Regex Tester

Live regex match highlighting