JSON Minifier
Remove unnecessary JSON whitespace while preserving the parsed data.
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JSON Validator
Check JSON syntax and identify the root data type.
DeveloperOpen tool ↗JSON Key Sorter
Recursively alphabetize object keys while preserving array order.
DeveloperOpen tool ↗JSON to CSV Converter
Convert an array of objects to CSV with quoted fields and a combined header.
DataOpen tool ↗CSV to JSON Converter
Convert quoted CSV data to JSON objects using its first row as headers.
DataOpen tool ↗CSV to TSV Converter
Change comma-separated data into tab-separated data with quoted-field handling.
DataOpen tool ↗TSV to CSV Converter
Convert tab-separated tables to comma-separated values.
DataOpen tool ↗Base64 Encoder
Encode Unicode text as UTF-8 Base64.
EncodingOpen tool ↗Base64 Decoder
Decode padded Base64 into UTF-8 text.
EncodingOpen tool ↗URL Component Encoder
Percent-encode text for use inside a URL parameter.
EncodingOpen tool ↗URL Component Decoder
Decode percent-encoded UTF-8 URL components.
EncodingOpen tool ↗HTML Entity Encoder
Escape ampersands, brackets and quotes for HTML text and attributes.
EncodingOpen tool ↗HTML Entity Decoder
Decode HTML character references without rendering markup.
EncodingOpen tool ↗UUID v4 Generator
Generate random UUID version 4 identifiers using browser cryptography.
SecurityOpen tool ↗UUID Syntax Checker
Check UUID formatting, version 1–8, and the RFC variant.
DeveloperOpen tool ↗Word & Character Counter
Count whitespace-separated words, Unicode characters, lines and paragraphs.
TextOpen tool ↗Unicode Text Reverser
Reverse text using grapheme clusters where supported.
TextOpen tool ↗Line Number Generator
Add sequential numbers to each line of a text.
TextOpen tool ↗Line Sorter
Sort lines alphabetically, optionally comparing embedded numbers numerically.
TextOpen tool ↗Find & Replace Text
Replace every exact occurrence of a text string without regular expressions.
TextOpen tool ↗URL Parser
Inspect a URL hostname, path, query parameters and fragment.
DeveloperOpen tool ↗UTM Campaign URL Builder
Build campaign links with correctly encoded UTM tracking parameters.
SEOOpen tool ↗JSON-LD Schema Generator
Wrap your entity properties in Schema.org JSON-LD with a selected entity type.
SEOOpen tool ↗Keyword Frequency Counter
Inspect word counts and frequency percentages in pasted content.
SEOOpen tool ↗Percentage Calculator
Calculate a percentage of a value and the increased or decreased total.
CalculatorsOpen tool ↗Percentage Change Calculator
Calculate absolute change and percentage change relative to the original magnitude.
CalculatorsOpen tool ↗VAT Calculator
Add or remove VAT using the rate you supply.
CalculatorsOpen tool ↗Compound Interest Calculator
Estimate compound growth with a fixed annual nominal rate and compounding frequency.
CalculatorsOpen tool ↗Loan Payment Calculator
Estimate fixed monthly payments and total interest on an amortizing loan.
CalculatorsOpen tool ↗Unix Timestamp Converter
Convert Unix seconds, Unix milliseconds or an explicit-zone ISO date to UTC.
DeveloperOpen tool ↗HEX to RGB & HSL Converter
Convert 3-digit or 6-digit hexadecimal colors to RGB and HSL values.
DesignOpen tool ↗JSON Path Query
Extract a specific value from nested JSON using safe property and array paths.
DeveloperOpen tool ↗NDJSON to JSON Parser
Parse newline-delimited JSON into an array, with source-line error reporting.
DataOpen tool ↗JWT Expiry & Claims Inspector
Inspect exp, nbf and iat claims relative to a supplied Unix timestamp.
SecurityOpen tool ↗IPv4 CIDR Subnet Calculator
Calculate subnet mask, network range and usable addresses from an IPv4 CIDR.
DeveloperOpen tool ↗WCAG Color Contrast Checker
Calculate sRGB contrast and WCAG AA/AAA text thresholds for two HEX colors.
DesignOpen tool ↗Content Security Policy Analyzer
Inspect CSP directives, duplicates and common broad source patterns.
SecurityOpen tool ↗HTTP Security Header Inspector
Check pasted HTTP headers for key security policy fields.
SecurityOpen tool ↗Redirect Chain Analyzer
Review supplied HTTP redirect steps for loops, mismatches and HTTPS downgrades.
SEOOpen tool ↗Robots.txt Rule Tester
Test a URL against pasted allow and disallow rules for a chosen crawler.
SEOOpen tool ↗Sitemap URL List Auditor
Find duplicate URLs, invalid lines, mixed hosts and fragments in a URL list.
SEOOpen tool ↗HAR Request Timing Analyzer
Summarize request timings, HTTP errors and slow requests from a HAR export.
DeveloperOpen tool ↗Web Access Log Analyzer
Count request status codes, response bytes and frequent paths in access logs.
DeveloperOpen tool ↗JSON Schema Subset Validator
Validate common JSON Schema constraints and report unsupported keywords.
DeveloperOpen tool ↗Query String Inspector & Sorter
Decode URL query pairs, identify duplicate keys and generate a sorted query.
DeveloperOpen tool ↗Subresource Integrity Hash Generator
Generate a SHA-based integrity token for the exact pasted UTF-8 resource text.
SecurityOpen tool ↗Unix Permission Bits Decoder
Translate octal permission bits into rwx notation including setuid, setgid and sticky bits.
DeveloperOpen tool ↗Arbitrary-Precision Base Converter
Convert signed integers between bases 2 through 36 without floating-point loss.
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