All tools

134 tools. Local tools never upload your data; network tools say exactly what they send.

api

API & HTTP

10

API & HTTPAPI Request TesterSend HTTP requests from your browser and inspect the full response.API & HTTPHTTP Status Code ReferenceSearchable reference for every HTTP status code and its meaning.API & HTTPcURL to Fetch ConverterConvert a cURL command into equivalent JavaScript fetch code.API & HTTPQuery String ParserBreak a query string into decoded key-value pairs.API & HTTPURL ParserSplit a URL into protocol, host, port, path, query, and fragment.API & HTTPBasic Auth EncoderBuild a Basic Authorization header from username and password.API & HTTPCookie ParserParse Cookie and Set-Cookie headers into readable attributes.API & HTTPUser-Agent ParserDecode a User-Agent string into browser, engine, OS, and device.API & HTTPCache-Control BuilderCompose a correct Cache-Control header from directive toggles.API & HTTPHTTP Method ReferenceReference for HTTP methods — semantics, safety, and idempotency.

data_object

JSON & Data

20

JSON & DataJSON FormatterPretty-print minified or messy JSON with consistent indentation.JSON & DataJSON ValidatorCheck whether text is valid JSON and pinpoint the first syntax error.JSON & DataJSON MinifierStrip whitespace from JSON to produce the smallest valid payload.JSON & DataJSON Key SorterRecursively sort all object keys in a JSON document alphabetically.JSON & DataJSON to YAMLConvert JSON documents into clean, readable YAML.JSON & DataYAML to JSONConvert YAML documents into formatted JSON.JSON & DataJSON to CSVFlatten an array of JSON objects into a CSV spreadsheet.JSON & DataCSV to JSONParse CSV or TSV data into a JSON array of objects or rows.JSON & DataJSON to XMLConvert JSON structures into indented XML markup.JSON & DataXML to JSONParse XML documents into equivalent JSON objects.JSON & DataJSON to TOMLConvert JSON objects into TOML configuration format.JSON & DataTOML to JSONParse TOML configuration files into formatted JSON.JSON & DataXML FormatterPretty-print XML with consistent indentation and one element per line.JSON & DataYAML FormatterNormalize YAML indentation and layout by re-serializing the document.JSON & DataJSON FlattenerFlatten nested JSON into a single level of dot-notation keys.JSON & DataJSON UnflattenerRebuild nested JSON from flat dot-notation keys.JSON & DataJSON to TypeScriptGenerate TypeScript interfaces from a JSON example document.JSON & DataJSONPath TesterRun JSONPath queries against a document and see matching values.JSON & DataJSON DiffCompare two JSON documents structurally and see what changed.JSON & DataCSV ViewerView CSV data as a sortable table without opening a spreadsheet app.

code

Encoding & Decoding

16

EncodingBase64 EncoderEncode text to Base64, with full UTF-8 support.EncodingBase64 DecoderDecode Base64 back to readable text, including UTF-8 content.EncodingURL EncoderPercent-encode text so it is safe to place in URLs and query strings.EncodingURL DecoderDecode percent-encoded URLs and query strings back to plain text.EncodingHTML Entity EncoderEscape text for safe embedding in HTML markup.EncodingHTML Entity DecoderConvert HTML entities like & and — back to characters.EncodingHex EncoderConvert text into its hexadecimal byte representation.EncodingHex DecoderConvert hexadecimal byte sequences back into readable text.EncodingText to BinaryConvert text into binary — eight bits per UTF-8 byte.EncodingBinary to TextDecode space-separated binary groups back into text.EncodingUnicode EscaperConvert characters to \uXXXX escape sequences.EncodingUnicode UnescaperConvert \uXXXX and \u{...} escape sequences back to characters.EncodingJS String EscaperEscape text for safe use inside JavaScript or JSON string literals.EncodingJS String UnescaperInterpret escape sequences like \n, \t, and \" as real characters.EncodingUTF-8 InspectorSee the code points and UTF-8 bytes behind every character.EncodingJWT DecoderDecode a JWT's header and payload and check its expiry — locally.

shield

Security & Crypto

13

Security & CryptoSHA-256 GeneratorCompute the SHA-256 hash of any text using Web Crypto.Security & CryptoSHA-512 GeneratorCompute the SHA-512 hash of any text using Web Crypto.Security & CryptoSHA-1 ChecksumCompute SHA-1 checksums for legacy compatibility needs.Security & CryptoMD5 ChecksumCompute MD5 checksums for file verification and legacy systems.Security & CryptoHMAC GeneratorCompute keyed HMAC-SHA256 or HMAC-SHA512 signatures.Security & CryptoSRI Hash GeneratorGenerate Subresource Integrity hashes for script and style tags.Security & CryptoUUID GeneratorGenerate cryptographically random UUID v4 identifiers.Security & CryptoULID GeneratorGenerate ULIDs — sortable, timestamped unique identifiers.Security & CryptoNano ID GeneratorGenerate compact, URL-safe Nano ID identifiers.Security & CryptoPassword GeneratorGenerate strong random passwords with configurable character sets.Security & CryptoRandom String GeneratorGenerate random alphanumeric strings for tokens and test data.Security & CryptoRandom Bytes GeneratorGenerate cryptographically secure random bytes as hex or Base64.Security & CryptoFile Hash CalculatorCompute SHA-256, SHA-1, and MD5 checksums of files on your device.

regular_expression

Regex & Text

17

Text & RegexRegex TesterTest regular expressions with live match highlighting and group details.Text & RegexText DiffCompare two texts and highlight added, removed, and changed lines.Text & RegexCase ConverterConvert text between camelCase, snake_case, kebab-case, and more.Text & RegexLine SorterSort lines alphabetically or numerically, ascending or descending.Text & RegexDuplicate Line RemoverRemove duplicate lines while keeping the first occurrence of each.Text & RegexLine ReverserReverse the order of lines so the last line comes first.Text & RegexEmpty Line RemoverDelete blank and whitespace-only lines from text.Text & RegexWhitespace TrimmerTrim leading and trailing whitespace from every line.Text & RegexWord & Character CounterCount characters, words, lines, and bytes in any text.Text & RegexFind and ReplaceReplace text across a document, with optional regex and case options.Text & RegexSlug GeneratorTurn titles into clean, URL-safe slugs.Text & RegexText to One LineJoin multi-line text into a single line.Text & RegexPrefix/Suffix LinesAdd a prefix and/or suffix to every line of text.Text & RegexExtract Matching LinesKeep only the lines that contain a substring or match a regex.Text & RegexRemove Matching LinesDelete every line that contains a substring or matches a regex.Text & RegexLorem Ipsum GeneratorGenerate classic lorem ipsum placeholder paragraphs.Text & RegexText NormalizerApply Unicode normalization (NFC, NFD, NFKC, NFKD) to text.

web

Web Development

13

Web & CSSHTML FormatterRe-indent HTML markup so nesting is easy to read.Web & CSSHTML MinifierStrip whitespace and comments from HTML to reduce its size.Web & CSSCSS FormatterExpand and indent CSS with one declaration per line.Web & CSSCSS MinifierCompress CSS by removing whitespace, comments, and redundancy.Web & CSSMarkdown PreviewerWrite Markdown and see the rendered result side by side.Web & CSSMarkdown to HTMLConvert Markdown into clean HTML markup you can copy.Web & CSSColor ConverterConvert colors between HEX, RGB, and HSL with a live swatch.Web & CSSColor Contrast CheckerCheck text/background color pairs against WCAG contrast ratios.Web & CSSCSS Unit ConverterConvert between px, rem, em, and pt at a configurable base size.Web & CSSpx to rem ConverterConvert pixel values to rem at your root font size.Web & CSSrem to px ConverterConvert rem values to pixels at your root font size.Web & CSSBox Shadow GeneratorDesign CSS box shadows visually and copy the generated code.Web & CSSHTML PreviewerPaste HTML and render it instantly in a sandboxed preview.

schedule

Date & Time

7

Date & TimeUnix Timestamp ConverterConvert Unix epoch timestamps to human dates and back.Date & TimeISO Date ConverterParse and produce ISO 8601 date strings in multiple representations.Date & TimeTimezone ConverterSee one moment in time across multiple time zones at once.Date & TimeDate Difference CalculatorCalculate the exact time between two dates.Date & TimeDuration CalculatorAdd and convert durations like 1h 30m, 90s, or 2d 4h.Date & TimeCron Expression ParserExplain a cron expression in plain English and show upcoming runs.Date & TimeRelative Time GeneratorTurn dates into relative phrases like "3 hours ago" or "in 2 days".

lan

Networking

6

NetworkingDNS LookupQuery A, AAAA, MX, TXT, CNAME, and NS records for any domain.NetworkingReverse DNS LookupFind the hostname (PTR record) behind an IP address.NetworkingIP Address InspectorClassify an IP address and show its binary and integer forms.NetworkingIPv4 Subnet CalculatorCalculate network, broadcast, mask, and host range from CIDR.NetworkingIPv6 ExpanderExpand compressed IPv6 addresses to full form, and compress back.NetworkingCommon Port ReferenceSearchable list of well-known TCP and UDP port assignments.

database

SQL & Database

5

SQL & DatabaseSQL FormatterFormat SQL queries with keyword casing and smart indentation.SQL & DatabaseSQL MinifierCollapse a formatted SQL query onto a single compact line.SQL & DatabaseJSON to SQL INSERTGenerate SQL INSERT statements from a JSON array of objects.SQL & DatabaseCSV to SQL INSERTConvert CSV rows into SQL INSERT statements.SQL & DatabaseDB Connection String ParserBreak a database URI into host, port, user, database, and options.

merge_type

Git & Workflow

5

Git & Workflow.gitignore GeneratorGenerate a .gitignore for your language plus OS junk files.Git & WorkflowConventional Commit BuilderCompose spec-compliant Conventional Commits messages.Git & WorkflowGit Branch Name GeneratorTurn a task description into a clean, prefixed branch name.Git & WorkflowSemVer ComparatorCompare two semantic versions and see which is newer and why.Git & WorkflowGitHub URL ParserExtract owner, repo, branch, and path from any GitHub URL.

deployed_code

Docker & DevOps

7

DevOps.env to JSONConvert dotenv files into a JSON object.DevOpsJSON to .envConvert a flat JSON object into dotenv KEY=value lines.DevOpsDocker Run Command BuilderCompose a docker run command from image, ports, volumes, and env.DevOpsDocker Compose FormatterFormat and validate docker-compose YAML files.DevOpsKubernetes YAML FormatterFormat and validate Kubernetes manifest YAML.DevOpsNginx Redirect GeneratorGenerate nginx config snippets for 301/302 redirects.DevOps.env.example GeneratorStrip values from a .env file to create a safe .env.example.

travel_explore

SEO & Meta

5

SEOMeta Tag GeneratorGenerate the full set of HTML meta tags for a page.SEOOpen Graph GeneratorGenerate Open Graph and Twitter card tags for link previews.SEORobots.txt GeneratorGenerate a robots.txt with allow/disallow rules and sitemap link.SEOSitemap GeneratorTurn a list of URLs into a valid XML sitemap.SEOJSON-LD FormatterFormat and check JSON-LD structured data blocks.

image

File & Media

6

Files & MediaImage ConverterConvert images between PNG, JPEG, and WebP — without uploading them.Files & MediaImage ResizerResize images to exact dimensions or percentages on your device.Files & MediaImage to Base64Encode an image as a Base64 data URI for inline embedding.Files & MediaBase64 to ImageDecode a Base64 string or data URI back into a viewable image.Files & MediaSVG to Data URIConvert SVG markup into a CSS-ready data URI.Files & MediaQR Code GeneratorGenerate QR codes for URLs, text, and Wi-Fi — rendered locally.

casino

Generators

4

GeneratorsRandom Number GeneratorGenerate random numbers in any range, integers or decimals.GeneratorsSample JSON GeneratorGenerate realistic sample JSON records for testing and demos.GeneratorsFake Data GeneratorGenerate fake names, emails, addresses, and phone numbers.GeneratorsAPI Mock Response GeneratorGenerate realistic mock API responses with status and body.