Accept-Language parser that ranks browser locales by q-value. Parse the header, spot duplicates and match it against your supported locales. Free.
Wondering is your website AI ready? Scan robots.txt, markdown negotiation, bot rules, and MCP/agent protocol signals in seconds. Free instant report, no signup.
Find all anagrams of any word and check if two words or phrases are anagrams of each other. Instant results using a built-in word list. Free online anagram tool.
Upload an image or video to instantly detect its exact pixel dimensions, aspect ratio, and the closest standard ratio like 16:9 or 4:3. Free and private.
Analyze a Content-Security-Policy header for unsafe directives like unsafe-inline, unsafe-eval, and wildcard sources. Get instant security warnings. Free, client-side, no signup.
CSV diff checker compares two CSV files row by row and shows added, removed, and modified cells with key column matching. Free, private, all in your browser.
CSV row counter that streams files of any size in your browser. Counts quoted rows correctly and checks the Excel 1,048,576-row limit. Free, never uploaded.
Cyclomatic complexity calculator scores every JavaScript and TypeScript function's decision-point complexity in your browser. Spot risky code before review. Free, no signup.
Postgres EXPLAIN ANALYZE visualizer shows a color-coded plan tree with per-node self time, row estimate misses, disk spills, and slow sequential scans. Free, no signup.
Fetch GitHub repository metrics like stars, forks, open issues, and size using the public GitHub API. Quickly audit any repo without leaving your browser.
Fetch public GitHub profile metrics including followers, repos, and gists via the GitHub API - instant results, no login required.
Grok pattern tester for Logstash and Elasticsearch. Match log lines against %{SYNTAX:SEMANTIC} patterns and preview every extracted field. Free, in-browser.
HAR file analyzer parses Chrome and Firefox DevTools exports into a readable performance report with request timing, sizes, and failures. Free, browser-based, no upload.
Hash identifier that works out which algorithm produced an unknown hash. Detects MD5, SHA-256, bcrypt, Argon2, NTLM, MySQL and 40 more formats in your browser.
HL7 parser and viewer for v2 messages. Splits ADT, ORU and ORM messages into named segments, fields and components, flags MSH errors, and keeps PHI local.
Paste HTTP response headers to see effective cache lifetime, whether shared or private caches can store the response, and any conflicting directives. Free.
Analyze an AWS IAM policy for wildcard actions, open resources and missing conditions. Flags least-privilege risks before a SOC 2 review. Free.
Compare two JSON objects and find all differences. Detect added, removed, and changed properties with full path details and color-coded results.
Find, test, and extract data from JSON using JSONPath expressions. Click any value to get its path, or query with JSONPath syntax.
LCOV viewer that reads an lcov.info file and shows line, function and branch coverage per file, worst files first, with uncovered line ranges. Free.
List comparer finds items in both lists, items unique to each, the union, and duplicates inside each list. Free, browser-based, handles millions of rows.
Check common MIME types using file signatures, browser-reported content types, and extension lookup. Useful for upload validation and content-type debugging.
Multipart form data parser for raw HTTP request bodies. Split any multipart/form-data payload into named parts with filenames, types and sizes.
Analyze nginx and Apache access logs online. See top IPs, endpoints, status codes, and user agents with visual charts. Paste log lines directly - no upload or server access needed.
Check daily, weekly, or monthly NPM download counts for any package using the official registry API. Compare trends and gauge library adoption instantly.
Look up npm package metadata, versions, dependencies, and maintainers instantly using the official NPM registry API - no login needed.
Estimate minified and gzip bundle sizes for NPM packages before adding them to your project. Avoid bloated dependencies with instant size analysis.
OpenAPI diff checker compares two Swagger or OpenAPI specs and flags breaking changes: removed paths, methods, and newly required parameters. Free, browser-based.
Check if a word or phrase is a palindrome. Supports ignoring spaces, punctuation, and letter case for flexible detection.
Prometheus metrics parser that turns exposition format into structured JSON. Reads HELP, TYPE, labels, histograms and OpenMetrics. Free, in-browser.
Inspect Python package metadata, release version, classifiers, and compatibility details directly from the PyPI JSON API. Useful for auditing Python dependencies.
Explain any regex pattern in plain English instantly. Breaks down groups, quantifiers, character classes, and anchors token by token. Free, client-side, no signup.
Secret scanner that finds leaked API keys, tokens and private keys in pasted code. 28 rules for AWS, GitHub, Stripe, OpenAI and more. Nothing is uploaded.
Check semantic HTML structure for missing landmarks, skipped heading levels and div soup. Paste markup and get a scored, line-referenced report. Free.
Decode a JavaScript or CSS source map to trace minified line and column numbers back to the original file, line, and symbol name. Free, instant VLQ decoding, fully client-side.
Explain any SQL query in plain English instantly. Breaks down SELECT, JOIN, WHERE, GROUP BY, and more clause by clause. Free, client-side, no signup.
Stack trace parser turns raw JavaScript, Python, Java and Go traces into a clean frame table that separates your app code from vendor noise.
Syslog parser that decodes RFC 5424 and RFC 3164 lines into facility, severity, timestamp, hostname, app name and structured data. Free, in-browser.
Analyze the readability of any text using Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, and ARI formulas. Find your text's grade level instantly.
Calculate the size of input text as UTF-8, UTF-16, UTF-32, JSON string, Base64, and URL-encoded data. Useful for code, DB documents, and API payloads.
Inspect every Unicode character in your text: code points, hex values, UTF-8 bytes, and types. Find invisible characters and debug encoding issues free online, no signup.
URL parser - extract protocol, host, path, query parameters, and hash fragments. Free, no signup, works instantly online.
Parse and analyze user agent strings to detect browser, operating system, device type, and bot information. Essential for web debugging.
Webpack bundle stats analyzer reads stats.json to rank your largest packages, modules and chunks, and flags duplicate versions. Free, runs in your browser.
Check how eco-friendly any website is. Measure CO₂ emissions per page view, page weight, green hosting status, and carbon rating (A+ to F) using the Website Carbon API.
Count words, characters, sentences, paragraphs and lines in your text. Analyze letter density and reading time instantly.
Count how often each word appears in your text. Analyze keyword density, find overused words, and export results as CSV.
YAML diff checker compares two YAML files and shows every added, removed, and changed key with structural diffing that ignores order and formatting. Free, private tool.