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Utilities

Enhance your productivity with our handy online utility tools. Simplify your tasks and streamline your workflow efficiently.

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Shell Glob Pattern Tester

Shell Glob Pattern Tester Test glob patterns against a list of file paths and see exactly which paths match — in real time, with semantics for Bash, Zsh, .gitignore, Python fnmatch, and Go path.Match. Type a pattern like src/**/*.{js,ts}, paste paths, and watch matches highlight green and non-matches fade out as you type. How to ...

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CSV Pivot Table Generator

CSV Pivot Table Generator Turn flat CSV data into an interactive pivot table in seconds. Drag column headers into the Rows, Columns, Values, and Filters zones and watch the cross-tabulation recompute live — no spreadsheet, no formulas, no upload to a server. Perfect for slicing exported reports, analytics dumps, or any tabular dataset right in ...

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SWIFT/BIC Code Validator & Parser

SWIFT/BIC Code Validator & Parser Paste any SWIFT or BIC code to validate its structure against the ISO 9362 specification and break it into its component parts. The tool checks character patterns, length, and identifies whether the code refers to a head office or a specific branch — all client-side, with no data ever leaving ...

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Ethereum / EVM Address Checksum Validator (EIP-55)

Ethereum / EVM Address Checksum Validator Paste any Ethereum or EVM-compatible address and instantly check whether its mixed-case checksum is correct under EIP-55. The tool also returns the canonical checksummed form so you can copy a safe version back into your wallet, contract, or block explorer. Everything runs locally in your browser — no addresses ...

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XML Diff Comparator

XML Diff Comparator Compare two XML documents at the node level or the line level. The XML Diff Comparator highlights added, removed, modified, and attribute-level changes so you can spot exactly what changed without skimming through thousands of tags by eye. Unlike plain text diff tools, this comparator understands XML structure: it ignores cosmetic whitespace, ...

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CSS Custom Property Extractor

CSS Custom Property Extractor Paste any CSS or SCSS stylesheet and instantly get a clean, sorted, deduplicated list of every --custom-property declared in it — along with the selector scope it was declared in. The extractor also surfaces variables that are referenced via var(--name) but never declared anywhere, which are a common cause of broken ...

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Mock HTTP Response Builder

Mock HTTP Response Builder Construct a structurally correct HTTP response message in seconds. Pick a status code, choose a body type, add headers, and the tool emits a ready-to-paste response string with the status line, headers, and body separated by CRLF — perfect for test fixtures, integration mocks, API documentation, and replaying responses against clients. ...

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QR Code Reader / Decoder

QR Code Reader / Decoder Decode any QR code image directly in your browser. Drop a screenshot, photo, or saved image into the uploader and the tool returns the embedded text, URL, Wi-Fi credentials, contact card, or other payload — instantly and without sending the image anywhere. How to Use Click the upload area and ...

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Barcode Check Digit Validator

Barcode Check Digit Validator Validate the check digit of any retail or shipping barcode in one paste. The validator auto-detects the format from the digit count, recomputes the expected check digit using the right algorithm — GS1 modulo-10 for EAN/UPC/GTIN, modulo-11 for ISBN-10 — and shows a position-by-position breakdown so you can see exactly where ...

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MIME Type Interactive Lookup

MIME Type Interactive Lookup Look up the correct MIME type for any file extension — or find the file extensions associated with a MIME type. Built on the IANA media type registry, this interactive lookup gives you instant, accurate results with category labels and one-click copying so you can drop the right Content-Type into your ...

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Country Info Lookup

Country Info Lookup Look up authoritative metadata for every country in the ISO 3166-1 standard — names, codes, dialing prefixes, currencies, capitals, and TLDs — in one place. The tool ships with a bundled dataset of 249 countries and dependent territories, so every search is instant, accurate, and works fully offline in your browser. Unlike ...

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Time Zone Meeting Planner

Time Zone Meeting Planner Find the best meeting window across multiple time zones at a glance. Add up to eight cities or IANA zones, pick a meeting date, and a color-coded 24-hour grid shows business hours, marginal slots, and night hours for every participant. Click any cell to lock in a moment and copy a ...

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Email Deliverability Checker

Email Deliverability Checker Audit a domain’s email authentication setup in seconds. Enter any domain and the tool runs live DNS lookups against Cloudflare’s resolver to inspect SPF, DMARC, MX, and BIMI records, then surfaces real configuration problems with a clear pass/fail verdict and an overall deliverability score. How to Use Type the domain you want ...

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Character Frequency Analyzer

Character Frequency Analyzer Paste any text and instantly see how often every character appears. The Character Frequency Analyzer counts every letter, digit, or symbol, ranks them, shows percentages, and renders a visual bar chart so you can spot patterns at a glance. It is a go-to companion for cryptanalysis, linguistics homework, password audits, content audits, ...

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LaTeX Equation Renderer

LaTeX Equation Renderer Type or paste any LaTeX math expression and instantly see it rendered as a clean, publication-quality equation in your browser. Whether you are writing a research paper, building course material, or sharing math on social media, the LaTeX Equation Renderer turns dense source markup into a beautifully typeset formula you can copy ...

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WebRTC IP Leak Detector

WebRTC IP Leak Detector WebRTC is a built-in browser API that powers voice and video calls without plugins. To connect two peers directly, it uses the ICE framework to gather candidate IP addresses — and that list includes the machine’s local LAN IP plus any public address a STUN server can see. When users run ...

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.env vs .env.example Key Diff Tool

.env vs .env.example Key Diff Tool Drift between your actual .env file and the .env.example template is one of the quietest sources of broken deploys. Keys get added in development, copied into production, and then forgotten in the template. Placeholder values stick around in .env where real secrets were supposed to land. This tool lines ...

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Morse Code Audio Player

Morse Code Audio Player Type any text and listen to it played as real Morse code in your browser. Adjust the speed and tone to match practice exam standards or vintage CW radio gear, then download the result as a WAV file you can use offline. How to Use Type or paste any letters, numbers, ...

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UUID Validator & Decoder

UUID Validator & Decoder Paste any UUID and instantly see whether it is valid, which version it follows (v1 through v8, plus the special Nil and Max UUIDs), and what metadata is hidden inside its bits. The tool decodes v1, v6, and v7 timestamps to a human-readable date, extracts the node ID / MAC fragment ...

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XPath Expression Tester & Evaluator

XPath Expression Tester & Evaluator Paste XML or HTML, type an XPath 1.0 expression, and instantly see which nodes match. The tester runs entirely in your browser, highlights matched fragments in the source, and shows a readable summary for node sets, strings, numbers, and booleans. How to Use Paste your XML or HTML document into ...

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