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JSON Tools 15
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JSON MinifierStrip whitespace to compress JSON payloads.JSON ValidatorCheck JSON syntax and pinpoint the exact error position.JSON String EscaperEscape a string for embedding inside a JSON document.JSON String UnescaperUnescape a JSON-encoded string value.JSON to CSV ConverterFlatten JSON arrays of objects into CSV.JSON to XML ConverterTransform JSON structures into XML documents.JSON to YAML ConverterConvert JSON into clean, readable YAML.JSON Path QueryExtract values from JSON with dot/bracket path expressions.JSON DiffCompare two JSON documents deep-equal and list every added, removed and changed path.JSON FlattenCollapse a nested JSON object into dotted keys with array indices.JSON UnflattenExpand dotted-key JSON back into nested objects and arrays.JSON Schema GeneratorInfer a JSON Schema 2020-12 document from a sample, detecting dates, emails, URIs and UUIDs.Extract Audio MetadataExtract common audio metadata across MP3 (ID3v2/ID3v1/GEOB), WAV/BWF/BW64 (INFO/bext/iXML/axml), FLAC (Vorbis Comment/Picture), OGG (Vorbis/OpusTags), AAC (ADTS), AC3 (Dolby Digital), WMA (ASF), plus best-effort MP4/M4A and AIFF scanning. OParse TLVConverts a Type-Length-Value (TLV) encoded string into a JSON object. Can optionally include a Key / Type entry. Tags: Key-Length-Value, KLV, Length-Value, LV
Data Conversion Tools 27
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YAML to JSON ConverterParse YAML configuration into JSON.HTML to Markdown ConverterConvert HTML fragments into Markdown.JSON to TOML ConverterConvert JSON config into TOML format.Markdown to HTML ConverterRender Markdown to clean HTML.Delimiter ConverterSwitch CSV between comma, tab, semicolon and pipe.JSON to JSON LinesTurn a JSON array into newline-delimited NDJSON, one standalone object per line.JSON Lines to JSONMerge newline-delimited JSON records back into one array and report any malformed line by number.JSON to TypeScriptGenerate TypeScript interfaces from a JSON sample, including nested objects and arrays.JSON to Go StructGenerate a Go struct with json tags from a JSON sample.JSON to Python DataclassGenerate a typed Python dataclass from a JSON sample.JSON to SQL CREATE TABLEInfer column types from JSON and emit a CREATE TABLE statement.CSV to Markdown TableConvert CSV into a GitHub-flavoured Markdown table, handling quoted fields and pipes.Markdown Table to CSVTurn a Markdown table back into clean CSV with proper quoting.CSV Pretty PrinterAlign CSV columns into a readable fixed-width table for terminals and docs.CSV to HTML TableGenerate an accessible HTML table from CSV with escaped cells.CSV to SQL INSERTProduce INSERT statements from CSV or JSON, with NULLs and quoted literals handled.CSV to CREATE TABLEInfer column types from CSV data and emit a CREATE TABLE for PostgreSQL, MySQL or SQLite.INI to JSONParse INI sections and key/value pairs into a structured JSON object.JSON to INISerialise a JSON object into an INI file with sections for nested objects..env to JSONParse dotenv files — comments, export prefixes, quoting and inline hashes — into JSON.JSON to .envFlatten JSON into UPPER_SNAKE dotenv variables with correct quoting.Java Properties to JSONConvert .properties files into JSON, splitting dotted keys into nested objects.JSON to Java PropertiesFlatten JSON into dotted Java .properties keys.JSON to Java RecordGenerate a Java record with boxed types and snake_case field names from a JSON sample.JSON to Rust StructGenerate a serde-derived Rust struct with rename attributes from a JSON sample.JSON to Kotlin Data ClassGenerate a Kotlin data class with nullable-aware types from a JSON sample.
XML Tools 4
HTML Tools 4
CSS Tools 6
CSS FormatterIndent and tidy CSS stylesheets.CSS MinifierCompress CSS for production.CSS Unit Converter (px, rem, em, %)Convert between px, rem, em, pt and % with a configurable root size.CSS Gradient GeneratorBuild linear and radial gradients visually and copy the CSS.Box Shadow GeneratorDesign box shadows with live preview and copy-ready CSS.CSS BeautifyIndents and prettifies Cascading Style Sheets (CSS) code.
JavaScript Tools 2
Developer Tools 19
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HTTP Status Code LookupSearch all HTTP status codes with meanings and usage notes.User-Agent ParserBreak a User-Agent string into browser, engine and OS.ASCII Character TableInteractive reference of all 128 ASCII codes.Unicode Character LookupInspect code points, blocks and UTF encodings of any character..gitignore GeneratorAssemble a .gitignore from curated stack templates.Semver ParserBreak a semantic version into major, minor, patch, prerelease and build metadata.Semver CompareCompare two semantic versions by precedence and tell you whether the change is breaking.Semver Range CheckerTest whether a version satisfies a ^, ~, >=, < or x-range expression.Snowflake ID DecoderDecode a Twitter or Discord snowflake into its timestamp, worker and sequence bits.MongoDB ObjectId DecoderExtract the creation timestamp, random bytes and counter from a 24-character ObjectId.MIME Type LookupLook up the MIME type for a file extension or the extensions for a MIME type, with server config snippets.Semver BumpBump major, minor, patch or any prerelease component with the reset rules applied.Semver SortSort a list of versions by semver precedence, so 1.10.0 correctly follows 1.9.0.Snowflake ID GeneratorGenerate time-ordered 64-bit snowflake IDs with a configurable worker id and epoch.MongoDB ObjectId GeneratorGenerate valid 24-character ObjectIds with the current timestamp, random bytes and counter.SQL FormatterBeautify SQL queries: keywords on new lines with indent, SELECT lists one column per line, subqueries nested, string literals and comments untouched.cURL to Code ConverterPaste a curl command and get a ready-to-run JavaScript fetch or Python requests snippet with method, headers and body preserved.Generic Code BeautifyAttempts to pretty print C-style languages such as C, C++, C#, Java, PHP, JavaScript etc. This will not do a perfect job, and the resulting code may not work any more. This operation is designed purely to make obfuscated or minified code mo
Regex Tools 3
Compression Tools 7
Gzip CompressorGzip text and download the .gz or inspect Base64.Gzip DecompressorInflate gzip payloads from files or Base64.Deflate CompressorRaw DEFLATE compression in the browser.Deflate DecompressorInflate raw DEFLATE data.Brotli CompressorCompress text with Brotli (RFC 7932) directly in your browser — the same codec Google ships, compiled to WebAssembly, quality 0–11, Base64 or Hex output with exact size statistics.Brotli DecompressorPaste Base64 or Hex brotli data and get the original text back — real RFC 7932 decompression in WebAssembly, binary payloads detected and re-encoded, nothing uploaded.
Web Tools 10
HTML Meta Tag GeneratorBuild title, description, OG and Twitter card tags.robots.txt GeneratorCompose a correct robots.txt with sitemaps and rules..htaccess Redirect Generator301/302 redirect and HTTPS-force snippets.JSON-LD Structured Data GeneratorCreate schema.org JSON-LD for articles, products and FAQs.Email Address ObfuscatorEncode emails to defeat scrapers.Favicon GeneratorRender text or color into a real .ico file locally.
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Content-Security-Policy GeneratorBuild a CSP header for nginx, Apache or HTML, with warnings about unsafe-inline and unsafe-eval.CORS Header GeneratorGenerate correct CORS headers and preflight handling for nginx, Express, Apache, PHP or a Cloudflare Worker.CORS Headers for ExpressGenerate correct Express CORS middleware with an explicit origin allow-list and preflight handling.CORS Headers for ApacheGenerate Apache mod_headers CORS configuration with OPTIONS preflight rewriting.