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Showing 192 of 192 tools
JSON Formatter
Format, validate, and beautify JSON data instantly.
Base64 Encoder Decoder
Encode and decode Base64 text quickly and securely.
JWT Decoder
Decode JWT header and payload data locally, inspect claims, and review token structure without verifying the signature.
URL Encoder Decoder
Encode and decode URLs for safe web usage.
SQL Formatter
Beautify and format SQL queries instantly.
Regex Tester
Test and debug regular expressions online.
Timestamp Converter
Convert Unix timestamps into readable dates.
Slug Generator
Generate clean SEO-friendly URL slugs instantly.
Text Case Converter
Convert text into uppercase, lowercase, and title case.
Word Counter
Count words, characters, sentences, and reading time.
UUID Generator
Generate random UUID v4 values instantly.
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text with clear hashing and security notes.
Password Generator
Generate browser-based random passwords with selectable length, letters, numbers, symbols, and safer randomness.
HTML Encoder Decoder
Encode and decode HTML entities instantly.
QR Code Generator
Generate QR codes instantly from text, URLs, and more.
JSON Minifier
Minify and compress JSON data instantly.
JSON to CSV Converter
Convert JSON data into CSV format instantly.
CSV to JSON Converter
Convert CSV rows into JSON arrays with quoted fields, escaped quotes, multiline values, empty cells, and header handling.
XML Formatter
Format and beautify XML instantly.
YAML Formatter
Format and beautify YAML instantly.
Meta Tag Generator
Generate SEO meta tags for websites instantly.
Robots.txt Generator
Generate robots.txt files for websites instantly.
Sitemap Generator
Generate XML sitemaps for websites instantly.
Open Graph Generator
Generate Open Graph meta tags for social sharing.
HMAC Generator
Generate HMAC SHA-256, SHA-384, or SHA-512 values from text and a shared secret in your browser.
bcrypt Generator
Generate salted bcrypt hashes with selectable cost factors for development and testing.
API Key Generator
Generate browser-based random API keys, secret strings, and Base64URL-safe tokens with entropy guidance.
Cron Expression Generator
Generate cron expressions for scheduled tasks.
JWT Expiration Checker
Check JWT exp, nbf, and iat timestamps, convert token times, and review expiration or not-before issues.
Random Token Generator
Generate browser-based random tokens for API keys, webhook secrets, session IDs, and testing with Base64URL, alphanumeric, hex, or numeric output.
SHA256 Generator
Generate SHA-256 hashes from text and review one-way hashing, exact input matching, and safe usage limits.
JSON Validator
Validate JSON syntax and find errors instantly.
JSON Escape Unescape
Escape and unescape JSON strings instantly.
RSA Key Generator
Generate RSA signing key pairs in your browser and export public and private keys as SPKI and PKCS8 PEM.
Base64URL Encoder Decoder
Encode and decode URL-safe Base64 strings, JWT segments, and padded or unpadded Base64URL values.
PEM Formatter
Format PEM certificates, public keys, private keys, CSRs, and multiple PEM blocks with label checks and line wrapping.
JSON Diff Checker
Compare two JSON objects and find differences instantly.
YAML to JSON Converter
Convert YAML to JSON instantly.
JSON to YAML Converter
Convert JSON to YAML instantly.
XML to JSON Converter
Convert XML to JSON instantly.
Robots.txt Tester
Test robots.txt rules against URLs and user agents instantly.
Canonical URL Checker
Check and validate canonical URLs instantly.
HTTP Headers Parser
Parse and format HTTP headers instantly.
Redirect Checker
Check URL redirects and HTTP redirect status instantly.
UTM Builder
Generate UTM tracking URLs instantly.
CSP Generator
Build Content-Security-Policy headers with common directives, source cleanup, and warnings for risky values.
JWT Signature Verifier
Verify HS256 JWT signatures with a shared secret and check whether the token header and payload match the signature.
CORS Header Checker
Check CORS response headers for origins, credentials, methods, request headers, preflight behavior, and common browser issues.
JSON Schema Validator
Validate JSON data against JSON Schema rules for types, required fields, properties, arrays, enums, ranges, and patterns.
CURL Command Builder
Build CURL commands for API requests instantly.
User Agent Parser
Parse browser and device user agents instantly.
Docker Compose Validator
Validate Docker Compose YAML files instantly.
Kubernetes YAML Validator
Validate Kubernetes YAML manifests instantly.
.env File Parser
Parse and format .env files instantly.
Cookie Parser
Parse HTTP cookies into readable key-value pairs instantly.
URL Query Params Parser
Parse URL query parameters instantly.
MIME Type Finder
Find MIME types by file extension instantly.
IP Address Inspector
Inspect IPv4 and IPv6 address format instantly.
HTTP Status Code Explorer
Search and understand HTTP status codes instantly.
Hreflang Tag Generator
Generate hreflang tags for multilingual and international SEO pages.
HTTP Headers Checker
Check HTTP response headers, status codes, redirects, cache directives, content type, and security-related headers.
Security Headers Scanner
Review browser-visible CSP, HSTS, framing, MIME, referrer, permissions, and cross-origin response headers with scanner-limit notes.
Redirect Chain Checker
Analyze redirect chains, redirect hops, status codes, loops, and final destination URLs for technical SEO debugging.
DNS Records Checker
Check DNS records including A, AAAA, CNAME, MX, TXT, NS, SOA, and domain configuration details.
Unicode Encoder Decoder
Encode and decode Unicode escape sequences for JavaScript, JSON, HTML, APIs, and text debugging.
Hex Encoder Decoder
Encode text to hexadecimal and decode hex values back into readable text for debugging and encoding workflows.
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
Escape and format CSV values for spreadsheets, exports, logs, data cleanup, and API workflows.
Morse Code Translator
Translate text to Morse code and decode Morse code back into readable text for messages, learning, and encoded text checks.
NATO Phonetic Alphabet Converter
Convert text into NATO phonetic alphabet words for clearer spelling, calls, support, and communication workflows.
Binary Encoder Decoder
Encode text to binary and decode binary values back into readable text for debugging, learning, and encoding workflows.
ROT13 Encoder Decoder
Encode and decode ROT13 text for simple letter substitution, puzzles, examples, and text transformation workflows.
YAML Validator
Validate YAML syntax, check formatting errors, and find indentation issues instantly.
Cron Expression Parser
Parse cron expressions instantly and understand cron schedules in simple human-readable format.
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
Validate UUID values, check UUID format, and detect UUID versions directly in your browser.
Unix Timestamp Generator
Generate Unix timestamps, convert dates to epoch time, and convert timestamps back to readable dates.
CURL to Fetch Converter
Convert cURL commands to JavaScript fetch code for API requests, headers, methods, and body data.
HTTP Request Formatter
Format raw HTTP requests and inspect methods, headers, query parameters, and body data.
Meta Tags Checker
Check title tags, meta descriptions, canonical links, Open Graph tags, and Twitter card tags.
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
Check Open Graph tags from HTML, preview social sharing metadata, and inspect Twitter card fields and common issues.
CSP Analyzer
Analyze Content Security Policy directives, source values, unsafe keywords, duplicates, and common policy gaps.
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
Generate HTTP security header snippets and review recommended values for CSP, HSTS, X-Frame-Options, Referrer-Policy, and more.
PEM Certificate Viewer
Inspect PEM certificate blocks, fingerprints, decoded size, certificate boundaries, and readable byte previews in your browser.
HTTP Header Diff Checker
Compare two sets of HTTP headers and find added, removed, changed, or unchanged header values.
API Request Header Builder
Build API request headers, prepare Authorization, Content-Type, Accept, and custom HTTP header blocks.
Cron Expression Validator
Validate cron expressions, check cron syntax, preview schedule meaning, and find common cron timing issues.
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 A, AAAA, CNAME, MX, TXT, NS, SOA, and CAA answers across public DNS-over-HTTPS resolvers.
CIDR Calculator
Calculate subnet masks, usable IP ranges, wildcard masks, broadcast addresses, and /31 or /32 behavior.
JSON Flatten / Unflatten Tool
Flatten nested JSON into dot notation paths or rebuild flattened key paths into nested JSON.
JSON Key Extractor
Extract keys, dot notation paths, value types, and nested field structure from JSON.
JSON Sort Keys Tool
Sort JSON object keys alphabetically, reorder nested JSON keys, and format structured JSON.
JSON to ENV Converter
Convert JSON into .env variables, flatten nested JSON keys, and generate dotenv-ready environment variables.
ENV to JSON Converter
Convert .env variables into JSON, parse dotenv key-value pairs, and format structured JSON.
CIDR Range Expander
Expand IPv4 CIDR ranges into IP addresses and calculate subnet details.
IPv4 Subnet Calculator
Calculate IPv4 subnet details, CIDR ranges, masks, usable hosts, and subnet splits.
CSP Policy Builder
Build Content Security Policy headers, configure directives, add trusted sources, and generate report-only or enforced CSP output.
Regex Match Tester
Test regular expressions, inspect matches and capture groups, and preview replacements.
HTTP Request Parser
Parse raw HTTP requests, inspect headers, query parameters, cookies, and request bodies.
SQL Beautifier / Minifier
Beautify, format, minify, and clean SQL queries directly in your browser.
cURL Command Parser
Parse cURL commands into method, URL, headers, cookies, body, and request details.
Fetch to cURL Converter
Convert JavaScript fetch() calls into reviewable cURL commands with method, URL, headers, body handling, and masked sensitive values.
Query String Builder
Build URL query strings from key-value parameters, encode values, and preview final URLs.
URL Parts Parser
Parse URLs into protocol, hostname, path, query parameters, hash, and readable URL parts.
Request Header Builder
Build HTTP request headers, add common API headers, and copy clean header output.
API Error Response Formatter
Format API error responses, extract error codes, messages, validation errors, and trace details.
GitHub Actions YAML Validator
Validate GitHub Actions workflow YAML, jobs, steps, triggers, permissions, and common CI mistakes.
Environment Variable Diff Checker
Compare two .env files or environment variable blocks and find added, removed, changed, duplicate, and empty values.
Kubernetes Resource Calculator
Calculate Kubernetes CPU and memory requests, limits, container totals, and workload resource usage from YAML.
GitHub Actions Matrix Builder
Build GitHub Actions strategy matrix YAML with OS runners, versions, include rules, and exclude rules.
Docker Compose Ports Checker
Check Docker Compose port mappings, duplicate host ports, exposed ports, and port conflicts.
Nginx Redirect Rule Tester
Test Nginx return and rewrite redirect rules, HTTP to HTTPS redirects, and possible redirect loops.
Base64 Image Encoder Decoder
Convert images to Base64 data URLs, decode Base64 image strings, and preview image output.
JWT Base64URL Encoder Decoder
Encode and decode JWT Base64URL strings, convert JWT parts, and add or remove Base64URL padding.
URL Query Encoder Decoder
Encode and decode URL query strings, parse query parameters, and handle plus signs or percent encoding.
Data URI Generator
Generate data URIs for text, SVG, HTML, CSS, JSON, and small snippets with percent or Base64 encoding.
Unicode Escape Sequence Converter
Convert Unicode escape sequences like \uXXXX, \u{1F600}, \xXX, HTML entities, and plain text.
JSON Schema Generator
Generate JSON Schema from sample JSON with detected types, arrays, nested objects, examples, and required fields.
JSON Schema to TypeScript Converter
Convert JSON Schema into TypeScript interfaces or type aliases with warnings for refs, composition, tuples, and validation limits.
CSV to Markdown Table Converter
Convert CSV, TSV, and delimited data into clean Markdown tables with headers, alignment, and escaped cells.
NDJSON Formatter Validator
Validate, format, compact, inspect, and convert NDJSON or JSONL newline-delimited records.
Cookie Security Checker
Check Set-Cookie headers for Secure, HttpOnly, SameSite, expiry, domain, path, prefix, and Partitioned issues.
HSTS Header Generator
Generate Strict-Transport-Security headers with max-age, includeSubDomains, preload, rollout warnings, and server config output.
Permissions Policy Header Generator
Generate Permissions-Policy headers for browser features like camera, microphone, geolocation, fullscreen, payment, USB, and clipboard.
JWT Claims Inspector
Inspect JWT claims like exp, nbf, iat, issuer, audience, subject, scopes, roles, and token lifetime without verifying signatures.
Hash Algorithm Identifier
Identify possible hash algorithms from format, length, character set, prefixes, and common hash shapes.
Meta Robots Tag Generator
Generate meta robots tags and X-Robots-Tag headers for index, noindex, follow, nofollow, snippets, images, and archives.
Sitemap URL Extractor
Extract URLs, lastmod dates, priorities, image URLs, and child sitemap links from XML sitemaps.
SERP Snippet Preview Tool
Preview Google-style search snippets and check page title, meta description, URL, truncation, and SEO snippet issues.
Heading Structure Checker
Check H1, H2, H3, skipped heading levels, duplicate headings, empty headings, and page outline issues.
Image Alt Text Checker
Check image alt text, missing alt attributes, duplicate alt text, long alt text, dimensions, and image SEO issues.
Hreflang Validator
Validate hreflang tags for language codes, region codes, x-default, duplicate targets, absolute URLs, and self-reference.
Punycode Converter
Convert international domain names between Unicode and xn-- Punycode for IDN, URL, email, and SEO/domain debugging.
Base32 Encoder Decoder
Encode text or hex bytes to Base32 and decode Base32 strings with RFC 4648, Base32hex, padding, and grouped output.
Base58 Encoder Decoder
Encode text or hex bytes to Base58 and decode Base58 strings with Bitcoin and Flickr alphabets.
Quoted Printable Encoder Decoder
Encode and decode Quoted-Printable MIME text with UTF-8, soft line breaks, line wrapping, and email debugging output.
Percent Encoding Analyzer
Inspect percent-encoded URL text, decode %XX escapes, find malformed percent encoding, and debug URL/query values.
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
Compare original and modified JSON to generate add, remove, and replace JSON Patch operations with JSON Pointer paths.
JSON Merge Tool
Merge two JSON objects with deep merge, shallow merge, array handling, conflict detection, and clean merged output.
Regex Replace Tester
Test regex find and replace patterns with capture groups, named groups, changed lines, match positions, and before-after output.
CSP Report Analyzer
Analyze CSP violation reports, parse JSON or NDJSON, group blocked resources, and review report-only or enforced CSP signals.
Title Tag Length Checker
Check SEO title tag length, truncation risk, keyword placement, brand placement, duplicate titles, separators, and SERP-style preview.
Meta Description Length Checker
Check meta description length, estimated pixel width, truncation risk, keyword use, duplicate text, and desktop or mobile snippet previews.
SEO Slug Analyzer
Analyze URL slugs for readability, keyword use, casing, separators, length, repeated characters, and clean URL suggestions.
Subresource Integrity Hash Generator
Generate SHA-256, SHA-384, and SHA-512 Subresource Integrity hashes and script/style integrity attributes for CDN resources.
Referrer Policy Generator
Generate Referrer-Policy headers, Nginx/Apache config, HTML meta tags, and privacy guidance for browser referrer behavior.
Indexability Checker
Check pasted HTML and headers for noindex, nofollow, robots meta tags, X-Robots-Tag, canonical issues, meta refresh, and indexing blockers.
Crawl Budget URL Cleaner
Clean URL lists for technical SEO by removing tracking parameters, fragments, duplicates, empty parameters, and crawl-waste URL patterns.
JWT Secret Strength Checker
Check JWT and HMAC signing secrets for entropy, length, weak words, repeated patterns, UUID-like values, and risky formats.
Security.txt Generator
Generate security.txt content with Contact, Expires, Canonical, Policy, Encryption, Acknowledgments, Preferred-Languages, and Hiring fields.
TLS Certificate Expiry Reminder Generator
Generate TLS certificate expiry reminders, SSL renewal checklists, calendar notes, and renewal action plans from a known expiry date.
HTTP Cache Header Analyzer
Analyze Cache-Control, ETag, Expires, Last-Modified, Vary, Age, CDN cache status, browser TTL, and revalidation behavior.
API Rate Limit Header Parser
Parse RateLimit, X-RateLimit, Retry-After, reset time, remaining quota, usage percentage, and API throttling headers.
HTTP Accept Header Generator
Generate Accept, Content-Type, Accept-Language, and Accept-Encoding headers for API testing and content negotiation debugging.
Content-Disposition Header Generator
Generate Content-Disposition headers for attachment or inline file responses with safe filenames, UTF-8 filename*, and server snippets.
GraphQL Query Formatter
Format, minify, and inspect GraphQL queries, mutations, subscriptions, fragments, variables, and request payloads.
HTTP Basic Auth Header Generator
Generate Authorization: Basic headers from username and password values with cURL, Fetch, Axios, JSON, and plain header outputs.
Dockerfile Instruction Explainer
Explain Dockerfile instructions, review common Dockerfile mistakes, and generate summaries, JSON, Markdown, CSV, or checklist output.
Docker Compose Service Dependency Visualizer
Visualize Docker Compose service dependencies from depends_on, links, ports, networks, and environment hints with Mermaid, JSON, Markdown, CSV, and checklist output.
Kubernetes YAML Resource Summarizer
Summarize Kubernetes manifests with resources, namespaces, images, replicas, ports, hosts, and review notes.
Kubernetes Service Port Mapper
Map Kubernetes service ports, targetPorts, nodePorts, selectors, container ports, and ingress hosts.
Kubernetes Image Tag Checker
Check Kubernetes image tags, latest usage, missing tags, digest pins, and registry names.
Kubernetes Resource Requests and Limits Checker
Check Kubernetes CPU and memory requests, limits, missing resources, and container settings.
URL Safe Base64 Converter
Convert Base64URL, standard Base64, text, padding, and JWT-style token segments.
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 and unescape XML entities for feeds, APIs, SVG, SOAP, and sitemap text.
Shell Command Escape Tool
Quote and escape command-line arguments for Bash, PowerShell, CMD, and env values.
JSON Lines to JSON Converter
Convert JSONL and NDJSON records into JSON arrays or newline-delimited JSON.
JSON to Markdown Table Converter
Convert JSON arrays and objects into clean Markdown tables for docs and GitHub.
JSON to Form Data Converter
Convert JSON objects into form-data fields, URL encoded bodies, and cURL parameters.
JSON Pointer Evaluator
Evaluate RFC 6901 JSON Pointer paths against JSON and inspect matched values.
JSON to URL Query Converter
Convert JSON objects into URL query strings and decode query strings back into JSON.
JSON Array Group By Tool
Group JSON array records by key, count values, and summarize numeric fields.
HTTP Method Tester
Check HTTP method usage and generate safe cURL or fetch request examples.
Docker Compose Environment Variable Resolver
Preview Docker Compose .env substitutions, defaults, and missing environment variables.
Octal Encoder Decoder
Convert text to octal values and decode octal bytes back to readable text.
JSON Array Filter Tool
Filter JSON array records by key, value, condition, and dot path.
Bearer Token Header Generator
Generate Bearer token Authorization headers, cURL snippets, fetch examples, and safe API request snippets.