JSON validator - checks whether text is valid JSON, with type, size, depth, key count a…
JSON validator - checks whether text is valid JSON, with type, size, depth, key count and error line and column
7,300 resources accept payment on this network. eip155:137
JSON validator - checks whether text is valid JSON, with type, size, depth, key count and error line and column
JSON formatter and beautifier - pretty-print or minify JSON with chosen indent and optional key sorting
CIDR subnet calculator - network, broadcast, netmask, wildcard, host range and usable hosts for an IPv4 CIDR block
Slug generator and case converter - slug, kebab, snake, camel, Pascal, constant and title case from any text
Text diff - line-by-line differences between two texts with added, removed and unchanged counts and similarity
Lorem ipsum text generator - repeatable paragraphs from a seed, with a chosen paragraph count and sentences per paragraph; the same seed always returns the same text
Bitcoin address validator - checks base58check and bech32/bech32m checksums, returns network, address type (P2PKH, P2SH, P2WPKH, taproot) and encoding
IP address classifier and formatter - IPv4 or IPv6 type (private, loopback, link-local, multicast, global), integer, expanded and compressed forms
URL parser - scheme, host, port, path segments, query parameters and fragment from any absolute URL
Profit margin and markup calculator - margin percent, markup percent and profit from cost and price, or the price for a target margin
ROI calculator - return on investment percent, gain, multiple and annualized return from amount invested and returned
Savings goal calculator - months to reach a target from monthly savings, current balance and interest rate
Inflation calculator - future cost of today's money and purchasing power loss over years at a given inflation rate
Unix timestamp converter - unix seconds or milliseconds to ISO 8601 date, weekday and day of year, or a date to unix time
CSV to JSON converter - parses quoted CSV with a chosen delimiter and header row into an array of objects
JSON to CSV converter - turns an array of objects or arrays into CSV with proper quoting
LLM model pricing and context window lookup - input and output price per million tokens, max tokens and capabilities for OpenAI, Anthropic, Google and more
End-of-life dates for software - check whether a version of Node.js, Python, Ubuntu, Java, PostgreSQL and 400 other products is still supported, with LTS and latest rele…
RubyGems package info - latest version, downloads, authors, license, runtime dependencies and links for any Ruby gem
NuGet package info - latest stable and prerelease version, total downloads, authors, tags, license and recent stable versions for any .NET package
Packagist package info - latest version, license, description, requirements and release history for any PHP Composer package
Indian mutual fund search - find scheme codes and names of mutual funds in India by keyword (AMFI data)
Indian mutual fund NAV - latest NAV, fund house, category and 1, 3 and 5 year returns for any AMFI scheme code
Belgian rail departures - live NMBS/SNCB station board with destination, platform, delay and cancellations from iRail