Developer
Developer Tools
Free developer tools for formatting, encoding, validating, and debugging data.
Showing 24 of 389 tools.
Accept-Language Header Parser
Parse, build, and run RFC 4647 lookup matching against an Accept-Language header.
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DeveloperJSON Repair
Auto-fix broken JSON: trailing commas, single quotes, unquoted keys, comments, smart quotes, and NDJSON.
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DeveloperGPT Token Counter
Estimate GPT tokens, context window usage, and OpenAI API cost.
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DeveloperURL Cleaner
Remove tracking parameters from one URL or a batch of URLs at once.
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DeveloperHTML Formatter
Pretty-print and minify HTML with indent, wrap, and quote controls.
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DeveloperMock Data Generator
Build custom rows of fake test data and export to JSON, CSV, SQL, or TS.
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DeveloperBase64 Encoder Decoder
Encode and decode Base64 with full Unicode.
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DeveloperJSON Formatter
Format, minify, and validate JSON in your browser.
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DeveloperRegex Tester
Live regex testing with highlights, capture groups, and replacement preview.
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DeveloperASCII Table Generator
Convert CSV or TSV rows into a copy-ready box-drawing or ASCII text table.
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DeveloperBase62 Encoder / Decoder
Encode and decode Base62 with GMP, inverted, and truncated alphabets, text or hex.
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DeveloperBCD Converter
Convert numbers between decimal and binary-coded decimal, in 8421, Excess-3, or Aiken 2421.
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DeveloperCEF Log Parser
Break a Common Event Format line into its 7 header fields and key=value extension, label the standard CEF keys, and export the result as JSON or NDJSON.
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DeveloperCloud Storage URI Parser
Decode Amazon S3, Google Cloud Storage, and Azure Blob URIs or HTTPS URLs into bucket, key, region, and account, and convert between native URI and HTTPS endpoint.
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DeveloperDS Record Generator
Turn a child zone's DNSKEY into a DS record with the key tag and digest computed locally, or parse a DS record to validate and explain every field.
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DeveloperGit Blob Hash Calculator
Compute the Git object id (git hash-object) of any content, in SHA-1 and SHA-256, with line ending and trailing newline control and a byte by byte breakdown.
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DeveloperGraphQL to TypeScript Converter
Turn a GraphQL schema into TypeScript interfaces and types, with enums, unions, scalars, and nullability handled.
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DeveloperGrok Pattern Tester
Match a grok pattern against a log line, pull out the named fields it captures, and see the full regular expression it compiles to.
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DeveloperHTTPS and SVCB Record Generator
Build an HTTPS or SVCB service-binding record from priority, target, ALPN, IP hints, ECH, and port, or parse one to validate and explain every parameter.
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DeveloperInfluxDB Line Protocol Parser
Read InfluxDB and Telegraf line protocol into typed points with tags and fields, export JSON or NDJSON, or build a valid line.
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DeveloperJSON Merge Patch
Apply an RFC 7396 merge patch to JSON, or diff two documents into the minimal merge patch, with a change log and round-trip check.
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DeveloperLogQL Query Parser
Parse a Grafana Loki LogQL query into its stream selector, label matchers, line filters, parser stages, and metric aggregations, each explained in plain language.
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DeveloperNAPTR Record Generator
Build a NAPTR record from order, preference, flags, service, regexp, and replacement, or parse one to validate and explain it.
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DeveloperPrometheus Metrics Parser
Read /metrics exposition text into metric families with labels and values, export JSON or NDJSON, or build a valid metric line.
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