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Showing 180 of 180 tools
JSON Formatter
Pretty-print valid JSON while preserving source tokens that JavaScript re-serialization can silently change.
Base64 Encoder Decoder
Encode UTF-8 text as standard Base64 or decode validated bytes as UTF-8 text or hex.
URL Encoder Decoder
Percent-encode URL components, full URLs, or form values and decode percent escapes back to text.
SQL Formatter
Reflow SQL clauses, lists, and keyword case while preserving quoted text, comments, and statement boundaries.
Slug Generator
Build lowercase hyphenated URL slugs with Unicode-preserving or ASCII-only output.
Text Case Converter
Change text between uppercase, lowercase, simple title case, and sentence case with Unicode-aware casing.
Word Counter
Count words, grapheme clusters, sentences, and reading time using locale-sensitive browser text segmentation.
UUID Generator
Generate RFC 9562 UUIDv4 identifiers locally from cryptographically secure browser randomness.
Hash Generator
Produce hexadecimal SHA-1, SHA-256, SHA-384, or SHA-512 digests from exact UTF-8 text.
Password Generator
Pick length and character groups, then generate a cryptographically random credential entirely in the browser.
QR Code Generator
Encode text or URLs as downloadable QR images with selectable size and error correction.
JSON Minifier
Remove insignificant JSON whitespace without changing strings, number spellings, duplicate members, or key order.
JSON to CSV Converter
Serialize JSON object records as CSV with escaped headers, nested values, and spreadsheet-formula safeguards.
CSV to JSON Converter
Parse header-based CSV into JSON records with strict quoting, exact columns, and string-preserving values.
XML Formatter
Validate XML syntax, then indent tag boundaries for a more readable source view.
YAML Formatter
Reformat YAML while retaining comments, anchors, aliases, directives, tags, and document boundaries where possible.
Meta Tag Generator
Generate search, canonical, robots, Open Graph image details, and X card metadata with practical validation.
Robots.txt Generator
Assemble User-agent, Allow, Disallow, and Sitemap directives into a copy-ready robots.txt file.
Sitemap Generator
Wrap line-separated URLs in a basic XML sitemap urlset document for search-engine discovery.
HMAC Generator
Generate HMAC message authentication codes with a secret key using SHA-256, SHA-384, or SHA-512 for signing and integrity checks.
bcrypt Generator
Generate salted bcrypt password hashes with a selectable cost factor for development, testing, and password-storage workflows.
Cron Expression Generator
Build portable five-field cron expressions field by field, with presets, validation, and day-rule warnings.
Random Token Generator
Generate Base64URL, alphanumeric, hex, or numeric secrets for API, webhook, session, and verification workflows.
SHA256 Generator
Hash exact UTF-8 text with SHA-256 and see how small input differences change the digest.
JSON Validator
Parse JSON syntax, surface native parsing errors, and show a formatted representation of valid input.
JSON Escape Unescape
Serialize text as a JSON string literal or parse a supplied JSON string value.
RSA Key Generator
Generate RSA signing key pairs with Web Crypto and export SPKI public and PKCS #8 private PEM.
Base64URL Encoder Decoder
Encode UTF-8 text as unpadded Base64URL or decode Base64URL and three-part JWT payload segments.
PEM Formatter
Normalize PEM Base64 padding and line wrapping while checking boundaries, labels, and multiple blocks.
JSON Diff Checker
Compare two parsed JSON values and report line-level differences after normalized formatting.
YAML to JSON Converter
Parse YAML and serialize the resulting data structure as formatted JSON.
JSON to YAML Converter
Parse valid JSON and serialize its data structure as readable YAML.
XML to JSON Converter
Parse XML into JSON while surfacing invalid markup before conversion.
Robots.txt Tester
Evaluate robots.txt Allow and Disallow rules for a chosen crawler and URL path.
Canonical URL Checker
Compare page URLs with HTML or HTTP Link canonicals, resolving relative targets and structural conflicts.
HTTP Headers Parser
Parse pasted HTTP field blocks while preserving order, duplicates, pseudo-headers, framing details, and protocol diagnostics.
Redirect Checker
Trace redirect hops from pasted HTTP response headers and surface Location targets, status codes, loops, and limits.
UTM Builder
Append source, medium, campaign, term, and content UTM parameters to a validated destination URL.
CSP Generator
Build a Content-Security-Policy header and spot broad sources, malformed keywords, and overly permissive script rules.
JWT Signature Verifier
Verify an HS256 JWT signature against exact UTF-8 secret bytes without treating a match as token acceptance.
CORS Header Checker
Check whether CORS response headers match the requested origin, method, headers, and credentials mode.
JSON Schema Validator
Validate JSON data against a supplied schema and surface failed constraints or required fields.
CURL Command Builder
Build curl commands with POSIX-shell-safe quoting for methods, URLs, headers, and request bodies.
User Agent Parser
Identify browser, operating system, and device hints from a pasted user-agent string.
Docker Compose Validator
Parse Compose YAML and flag structural or configuration problems before deployment.
Kubernetes YAML Validator
Parse Kubernetes manifests and flag YAML or resource-structure problems before applying them.
.env File Parser
Parse dotenv assignments into structured keys and values for inspection or JSON output.
Cookie Parser
Split Cookie header text into name-value pairs and percent-decode each parsed value.
URL Query Params Parser
Parse a full URL or query string into decoded parameter key-value output.
MIME Type Finder
Match known file extensions to MIME media types and show the associated content type.
IP Address Inspector
Inspect IPv4 or IPv6 syntax and report the address form without performing network lookups.
HTTP Status Code Explorer
Look up supported HTTP status codes and read their name and short meaning.
Hreflang Tag Generator
Generate hreflang tags for multilingual and international SEO pages.
HTTP Headers Checker
Fetch a URL and inspect browser-exposed response headers, final status, redirects, caching, and security fields.
Security Headers Scanner
Read pasted security response headers, with an optional browser check when CORS exposes them.
DNS Records Checker
Check DNS records including A, AAAA, CNAME, MX, TXT, NS, SOA, and domain configuration details.
Unicode Encoder Decoder
Inspect text as UTF-16 escapes, U+ code points, UTF-8 bytes, normalization, bidi controls, and surrogate validity.
Hex Encoder Decoder
Encode UTF-8 text as hexadecimal bytes and decode valid UTF-8 hex without silent replacement.
HTML Escape Unescape
Escape and unescape HTML entities for safe text rendering, frontend debugging, APIs, and web development workflows.
ASCII Converter
Convert text to ASCII codes and decode ASCII values back into readable text for debugging and encoding workflows.
CSV Escape Formatter
Quote CSV fields, double embedded quotation marks, and preserve commas, line breaks, and boundary whitespace.
Morse Code Translator
Translate between text and International Morse notation with explicit spacing and optional software extensions.
NATO Phonetic Alphabet Converter
Spell letters with official NATO/ICAO code words and optional radiotelephony digit pronunciations.
Binary Encoder Decoder
Encode text to binary and decode binary values back into readable text for debugging, learning, and encoding workflows.
ROT13 Encoder Decoder
Rotate ASCII letters by 13 places while preserving numbers, punctuation, and other Unicode text.
YAML Validator
Parse YAML syntax and surface indentation or structure errors without rewriting the document.
Dockerfile Linter
Check Dockerfile content for common issues, risky patterns, and basic Dockerfile best practices.
Kubernetes Secret Decoder
Decode Kubernetes Secret YAML values and inspect base64 encoded secret data in your browser.
UUID Validator
Check UUID structure, version, variant, Nil, Max, and reserved forms against RFC 9562.
Unix Timestamp Generator
Generate Unix seconds or milliseconds from dates, then convert timestamps back using an explicitly selected unit.
CURL to Fetch Converter
Convert cURL requests into browser fetch() code and flag headers or options Fetch cannot reproduce.
HTTP Request Formatter
Inspect HTTP/1.x request framing, target forms, headers, body bytes, and protocol warnings.
Meta Tags Checker
Audit pasted HTML for search/social metadata, duplicates, directives, URL issues, charset, and head placement.
HTTP Response Formatter
Format raw HTTP responses and inspect status codes, headers, cookies, redirects, and body data.
Structured Data Validator
Validate JSON-LD structured data, inspect schema types, and find common schema markup issues.
Nginx Config Validator
Check Nginx configuration snippets for common syntax issues, missing braces, server blocks, and proxy settings.
Open Graph Preview Checker
Inspect Open Graph and X metadata, repeated image groups, fallbacks, URL conflicts, and approximate previews.
CSP Analyzer
Parse CSP directives and sources, then flag duplicate rules, invalid combinations, and risky allowances.
JSON Path Tester
Test JSON paths against JSON data, inspect matched values, and check nested objects or arrays.
XML Validator
Validate XML syntax, check XML structure, and find parsing errors directly in your browser.
Security Header Generator
Build a starter security-header bundle across HSTS, CSP, framing, MIME, referrer, permissions, and isolation policies.
PEM Certificate Viewer
Inspect PEM certificate blocks, decode readable certificate content, and review certificate details in your browser.
HTTP Header Diff Checker
Compare two sets of HTTP headers and find added, removed, changed, or unchanged header values.
Cron Expression Validator
Validate and interpret five-field cron syntax, expanded field values, calendar traps, and scheduler boundaries.
Robots.txt Validator
Validate robots.txt syntax, check crawler rules, review sitemap lines, and find common robots.txt issues.
Canonical Tag Generator
Generate canonical link tags, check canonical URL format, and prepare SEO canonical markup.
Sitemap Validator
Validate XML sitemap syntax, inspect sitemap URLs, and find common sitemap issues before submission.
DNS Propagation Checker
Compare DNS record answers, response codes, and TTLs from Google and Cloudflare public resolvers.
JSON Flatten / Unflatten Tool
Flatten nested JSON into reversible escaped paths or rebuild objects, arrays, and empty containers.
JSON Key Extractor
List JSON member names, nested paths, value types, and array-aware field structure.
JSON Sort Keys Tool
Order JSON object keys deterministically while preserving array sequence and numeric value safety.
JSON to ENV Converter
Flatten JSON configuration into environment assignments with explicit array, null, and quoting choices.
ENV to JSON Converter
Parse dotenv-style assignments into flat or grouped JSON while keeping type inference explicit.
CIDR Range Expander
Enumerate IPv4 addresses from CIDR blocks with explicit boundary rules and browser-safe output limits.
IPv4 Subnet Calculator
Calculate IPv4 CIDR boundaries, range ends, /31 semantics, binary form, and equal-size subnet splits.
CSP Policy Builder
Build an enforced or report-only CSP from selected directives and sources, ready for an HTTP header.
Regex Match Tester
Run JavaScript regex patterns with selected flags, capture groups, UTF-16 indexes, and replacement behavior.
HTTP Request Parser
Parse raw HTTP/1.x requests into URLs, headers, query data, cookies, bodies, JSON, or cURL.
SQL Beautifier / Minifier
Beautify or minify SQL while preserving quoted text, comments, dollar-quoted strings, and comparison operators.
cURL Command Parser
Parse cURL commands into method, URL, headers, authentication, cookies, and request body without losing duplicate headers.
Fetch to cURL Converter
Convert supported literal fetch() requests into POSIX-shell cURL commands with safe quoting and optional secret masking.
Query String Builder
Build query strings with duplicate keys, controlled percent encoding, and repeated, bracket, or comma array formats.
URL Parts Parser
Resolve and parse absolute or relative URLs while preserving duplicate parameters and masking embedded credentials.
Request Header Builder
Build HTTP request headers with auth helpers, secret masking, Fetch/CORS checks, and cURL or JSON output.
API Error Response Formatter
Separate HTTP status, app codes, validation details, trace IDs, and RFC 9457 fields from API error responses.
GitHub Actions YAML Validator
Parse workflow YAML and examine triggers, jobs, runners, permissions, action references, and secret risks.
Environment Variable Diff Checker
Compare dotenv assignments while surfacing missing keys, duplicate definitions, empty values, and secret-sensitive changes.
Kubernetes Resource Calculator
Total declared Kubernetes CPU and memory requests or limits across supported workload replicas.
GitHub Actions Matrix Builder
Generate strategy matrices with GitHub-accurate include/exclude expansion, scalar typing, concurrency controls, and job limits.
Docker Compose Ports Checker
Examine published ports, host bindings, ranges, protocols, expose entries, and cross-service collisions.
Nginx Redirect Rule Tester
Simulate scoped Nginx return and rewrite redirects with URL, location, query, and loop checks.
Base64 Image Encoder Decoder
Encode image files as Base64 data URLs or validate, preview, and inspect decoded image bytes.
JWT Base64URL Encoder Decoder
Decode JWS/JWE compact segments or encode JSON and text as JOSE-style Base64URL with padding controls.
URL Query Encoder Decoder
Decode ordered query parameters or build percent-encoded values with explicit form-style handling.
Data URI Generator
Build compact data URLs with explicit media type, charset, percent encoding, or Base64 choices.
Unicode Escape Sequence Converter
Convert JavaScript Unicode escapes and numeric HTML references with text, line, JSON, or code-point output.
JSON Schema Generator
Infer a draft-aware JSON Schema from sample data while keeping validation assumptions visible.
JSON Schema to TypeScript Converter
Convert JSON Schema into TypeScript interfaces and type aliases with nested objects, enums, arrays, and required fields.
CSV to Markdown Table Converter
Turn CSV, TSV, or delimited rows into Markdown tables with strict quoted-field parsing.
Cookie Security Checker
Check Set-Cookie attributes, prefix rules, cross-site behavior, and scope without guessing application intent.
HSTS Header Generator
Build an HSTS header while keeping max-age, subdomain scope, and preload consequences visible.
Permissions Policy Header Generator
Define browser-feature allowlists and exact origin scope in a Permissions-Policy header.
JWT Claims Inspector
Decode JWT structure and inspect timing, issuer, audience, scopes, roles, and claim-policy warnings.
Hash Algorithm Identifier
Separate self-identifying password hashes from ambiguous digest shapes using prefixes, length, and encoding.
Meta Robots Tag Generator
Build robots meta and X-Robots-Tag directives for indexing, link following, snippets, previews, and expiry.
Sitemap URL Extractor
Extract URLs, lastmod dates, priorities, image URLs, and child sitemap links from XML sitemaps.
SERP Snippet Preview Tool
Preview one search-result snippet across desktop or mobile layouts with title, description, URL, and rewrite caveats.
Heading Structure Checker
Review HTML heading hierarchy, H1 usage, skipped levels, duplicates, empty headings, and outline structure.
Image Alt Text Checker
Review image alt text, missing attributes, duplicates, dimensions, and length patterns for accessibility and SEO context.
Hreflang Validator
Validate hreflang sets for language, script, and region codes, x-default, absolute URLs, duplicates, and self-reference.
Punycode Converter
Convert IDN hostnames between Unicode and ASCII form with label-level IDNA validation.
Base32 Encoder Decoder
Encode bytes with RFC 4648 Base32 or Base32hex while validating padding, alphabet, and canonical pad bits.
Base58 Encoder Decoder
Convert raw bytes with Bitcoin or Flickr Base58 while preserving leading-zero and alphabet semantics.
Quoted Printable Encoder Decoder
Encode or decode MIME body bytes with RFC 2045 escapes, wrapping, whitespace, and charset boundaries.
Percent Encoding Analyzer
Trace percent-encoded bytes, malformed escapes, UTF-8 failures, reserved delimiters, and query plus handling.
Docker Environment Variable Checker
Check Docker .env and docker-compose environment variables for duplicates, missing values, invalid names, and risky secrets.
Docker Compose Volume Checker
Check Docker Compose volume mounts for duplicate targets, risky host paths, Docker socket mounts, anonymous volumes, and read-only recommendations.
JSON Patch Generator
Derive verified RFC 6902 add, remove, and replace operations with escaped JSON Pointer paths.
JSON Merge Tool
Combine JSON with explicit deep, shallow, array, collision, and null-value rules.
Regex Replace Tester
Preview JavaScript regex replacements with numbered or named captures, replacement tokens, match positions, and changed lines.
CSP Report Analyzer
Group CSP violation reports by directive and disposition, while separating blocked resources from report-only findings.
Title Tag Length Checker
Audit title elements in bulk for length, duplicates, boilerplate, branding, phrase use, and HTML issues.
Meta Description Length Checker
Audit meta descriptions in bulk for length, duplicates, generic wording, phrase repetition, and HTML placement.
SEO Slug Analyzer
Assess whether a path slug is readable and stable without treating length or topic wording as ranking formulas.
Subresource Integrity Hash Generator
Hash exact UTF-8 script or stylesheet text for SRI and produce integrity attributes for HTML tags.
Referrer Policy Generator
Build a Referrer-Policy header and compare same-origin, cross-origin, and HTTPS-to-HTTP referrer behavior.
Indexability Checker
Separate hard indexing blocks from softer canonical and crawling signals in pasted HTML and response headers.
Crawl Budget URL Cleaner
Normalize crawl-export URLs conservatively while keeping meaningful parameters, path variants, and flagged exclusions visible for verification.
JWT Secret Strength Checker
Check HS256, HS384, or HS512 key bytes against required minimum lengths and flag obviously guessable secrets.
Security.txt Generator
Build RFC 9116 security.txt content with required Contact and Expires fields plus optional Policy, Encryption, and Acknowledgments entries.
TLS Certificate Expiry Reminder Generator
Plan renewal from a known TLS certificate expiry date with reminder dates, checklists, and calendar notes.
HTTP Cache Header Analyzer
Interpret Cache-Control, ETag, Expires, Last-Modified, Vary, Age, TTL, and revalidation signals from response headers.
API Rate Limit Header Parser
Interpret RateLimit draft fields, Retry-After, and provider-specific X-RateLimit quotas without guessing ambiguous reset timing.
HTTP Accept Header Generator
Build Accept, Content-Type, Accept-Language, and Accept-Encoding headers with q-value checks and browser Fetch restrictions.
Content-Disposition Header Generator
Build download or inline headers with ASCII fallback and RFC 8187 UTF-8 filenames.
GraphQL Query Formatter
Reformat GraphQL documents while preserving strings, comments, operations, variables, and request semantics.
HTTP Basic Auth Header Generator
Encode user-id and password bytes into RFC 7617 Basic Authorization headers and request snippets.
Dockerfile Instruction Explainer
Interpret Dockerfile instructions across parser directives, build stages, runtime settings, and security-sensitive choices.
Docker Compose Service Dependency Visualizer
Trace Compose startup dependencies, shared namespaces, legacy links, and inferred service connections from YAML.
Kubernetes YAML Resource Summarizer
Inventory Kubernetes resources, namespaces, workload images, replicas, ports, hosts, and configuration signals from manifests.
Kubernetes Service Port Mapper
Map Service ports to selected workload ports and Ingress backends across Kubernetes manifests.
Kubernetes Image Tag Checker
Trace Kubernetes container images, tags, digests, pull policies, and registry references across workload manifests.
Kubernetes Resource Requests and Limits Checker
Check container and Pod-level resource declarations for missing fields, invalid quantities, and request-limit conflicts.
URL Safe Base64 Converter
Convert, normalize, and inspect Base64URL with canonical pad-bit validation, padding controls, and UTF-8 or Latin-1 views.
PEM Certificate Encoder Decoder
Decode, encode, parse, and normalize PEM certificates, keys, CSRs, CRLs, Base64 bodies, labels, and line wrapping locally.
MIME Encoded-Word Decoder
Decode MIME and RFC 2047 email subjects, sender names, UTF-8 Base64 words, Q encoding, charsets, and folded headers locally.
String Escape Sequence Converter
Decode and encode escaped strings for JavaScript, JSON, Unicode, hex, and C-style text.
XML Escape Unescape
Escape XML text safely or decode predefined and numeric entities under XML 1.0 or 1.1 rules.
Shell Command Escape Tool
Prepare literal arguments for POSIX shells and PowerShell, with clear warnings for CMD and dotenv differences.
JSON Lines to JSON Converter
Convert and validate JSON Lines or NDJSON, preserve line errors, enforce object-only records, and emit JSON arrays.
JSON to Markdown Table Converter
Map JSON records into GFM tables with collision-safe paths, columns, and missing-value handling.
JSON to Form Data Converter
Convert JSON objects into form-data fields, URL encoded bodies, and cURL parameters.
JSON Pointer Evaluator
Resolve RFC 6901 pointers, URI fragments, escaped tokens, arrays, and root values precisely.
JSON to URL Query Converter
Translate JSON and query parameters with explicit encoding, nesting, repetition, and type-conversion choices.
JSON Array Group By Tool
Group JSON records by escaped nested paths while keeping value types and numeric summaries distinct.
HTTP Method Tester
Compare HTTP method semantics and build cURL or fetch examples without sending requests.
Docker Compose Environment Variable Resolver
Resolve Compose interpolation across shell and .env sources with exact fallback, required, and empty-value semantics.
Octal Encoder Decoder
Convert between readable text and octal byte values using ASCII or UTF-8 decoding.
JSON Array Filter Tool
Filter JSON array records by key, value, condition, and dot path.
Bearer Token Header Generator
Format Bearer Authorization headers and request snippets with optional redaction, without verifying token validity or authorization.