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Developer Tools

MCP ContractGuardNEW

Compare MCP tool catalogs, classify breaking and semantic changes, replay sanitized historical calls, and export deployment reports.

Breaking-change detectionCall replayStable contract hashesJSON + Markdown reports

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MCP Server Auditor & Live InspectorNEW

Connect to a remote MCP server, inventory every advertised capability, explain its tools, and validate their contracts.

Tool discovery checksJSON-RPC validationSchema diagnosticsBlueprint output

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Tailwind to Semantic CSS De-BloaterNEW

Convert utility-heavy Tailwind HTML/JSX into semantic class CSS output for maintainable production styles.

Semantic class outputOpen Props optionMapped utility statsMigration hints

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GEO Citation AnalyzerNEW

Score docs and technical pages for AI citation readiness, extractability, structure quality, and trust signals.

GEO scoreExtractability checksE-E-A-T proxy checksActionable recommendations

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JSON to Zod Schema Converter

Convert JSON to TypeScript Zod validation schemas with intelligent type detection. Perfect for API integration and form validation in React and Next.js applications.

Smart type detectionNested objects supportStrict modeOptional fields

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Tailwind CSS Class Sorter

Automatically sort and organize Tailwind CSS utility classes following the official recommended order. Improve code readability and maintain consistency.

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Environment File Validator

Validate and format .env configuration files against templates. Detect missing keys, duplicates, and errors before deployment.

Template validationError detectionAuto-formattingKey sorting

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JSON Formatter & Beautifier

Format, beautify, and minify JSON with advanced options. Handle large files efficiently with customizable indentation and sorting.

Pretty printMinify JSONSort keysLarge file support

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CSS Glassmorphism Generator

Generate trendy translucent, frosted-glass effect CSS and Tailwind code with customizable blur, opacity, colors, and interactive states.

CSS + TailwindState variantsColor picker12+ options

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SVG to React Converter

Convert SVG markup to clean React and TypeScript components with automatic attribute conversion, viewBox management, and customizable props.

TypeScript supportResponsive SVGsAuto conversion11+ options

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Image Placeholder Generator

Generate base64 color blocks and Tailwind-ready placeholder components for wireframes with custom dimensions, colors, and patterns.

Base64 + TailwindPatternsOffline capable13+ options

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Cron Job Explainer

Translate cron syntax into human-readable explanations and predict next execution times with timezone support and frequency analysis.

English explanationsNext runsTimezone supportFrequency calc

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Curl to Fetch/Axios Converter

Convert curl commands to modern JavaScript and TypeScript code with support for Fetch, Axios, and XMLHttpRequest output formats.

3 output formatsTypeScriptError handling7+ options

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Log File Anonymizer

Replace sensitive data (emails, IPs, UUIDs, credit cards) in log files with placeholders to protect privacy and comply with regulations.

6+ data typesCustom patterns3 strategiesPrivacy compliant

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Online Code Runner & CompilerNEW

Run Python and JavaScript code instantly in your browser. WebAssembly-powered, zero server execution, complete privacy. Full standard library support.

Python 3 (Pyodide)JavaScript ES2024Client-side only10s timeout protection

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Non-Developer Tools

Image Authenticity & Evidence CheckerNEW

Inspect image hashes, real container type, metadata and editing markers, C2PA/JUMBF signals, entropy, and appended bytes with calibrated evidence findings.

SHA-256 evidence IDC2PA signal checkEditing tracesBranded PDF report

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PDF Redaction & Privacy AutopsyNEW

Find visual overlay redactions, retained revisions, invisible text, attachments, scripts, forms, comments, and hidden content surfaces.

Overlay detectionRevision historyActive contentBranded PDF report

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Hidden Payload & Polyglot ScannerNEW

Compare extensions with magic bytes, map secondary file and executable signatures, inspect suspicious names, and locate high-entropy regions.

Magic-byte identityPolyglot signalsEntropy mapBranded PDF report

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CSV ViewerNEW

Open CSV and TSV files as a searchable, sortable table with sticky headers, numeric alignment, and phone-friendly cards.

Auto delimiter detectionSearch & sortCard view on mobileNo upload

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DOCX ViewerNEW

Read Word .docx documents as clean reflowing text with adjustable size, spacing, width, and reading themes.

Headings, lists & tablesReadability controlsSepia & night themesNo upload

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PDF ViewerNEW

View PDFs at full width with zoom, dark and sepia page colors, and a reflowing text mode for small screens.

Fit-to-width pagesText mode for phonesDark page colorsNo upload

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PPTX ViewerNEW

Read PowerPoint slides as responsive cards with titles, bullets, tables, images, and speaker notes.

Slide navigationSpeaker notesTables & imagesNo upload

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Excel ViewerNEW

Open .xlsx, .xlsm, and .ods spreadsheets with their formatting, merged cells, frozen panes, and every sheet—free, no signup.

Excel formatting keptAll sheets & tabsData view with exportNo upload

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ODT ViewerNEW

Read LibreOffice and OpenOffice .odt documents with headings, lists, tables, images, and footnotes—free, no signup.

Formatting keptClickable outlineTables & imagesNo upload

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RTF ViewerNEW

Open .rtf files from WordPad, TextEdit, and Word with fonts, colors, lists, tables, and pictures intact—free, no signup.

Fonts & colorsLists & tablesUnicode supportNo upload

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EPUB ReaderNEW

Read DRM-free EPUB e-books with a chapter list and sepia, night, font size, and spacing controls—free, no signup.

Chapter listSepia & night themesAdjustable textNo upload

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Markdown ViewerNEW

Preview Markdown files and READMEs with tables, code blocks, links, and a clickable outline—free, no signup.

Tables & code blocksClickable outlineSafe renderingNo upload

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Text File ViewerNEW

Read .txt and .log files with search, line wrapping, and adjustable size, spacing, and themes—free, no signup.

Search & highlightLarge filesReading themesNo upload

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Video Link DownloaderNEW

Download videos from YouTube, Instagram, Facebook, TikTok, Twitter/X, Vimeo, and direct file links with a simple, legal-use-focused workflow.

YouTube, Instagram, Facebook supportTikTok, Twitter/X, Vimeo supportDirect video URLsCustom file nameOne-click download

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What Is My IP Address?NEW

See the public IPv4 or IPv6 address websites see when you connect. No signup and no stored lookup history.

Instant public IPIPv4 and IPv6One-click copyNo lookup history

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Device Check & Speaker TestNEW

Check screen and browser capabilities, then verify your left and right speaker channels with a safe test tone.

Stereo speaker testScreen detailsBrowser capabilitiesRuns locally

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Image Metadata ViewerNEW

Inspect every readable EXIF, GPS, camera, XMP, IPTC, ICC, and technical image tag locally, with a GPS map when available.

Complete tag reportGPS location mapJSON exportNo image upload

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Image Metadata RemoverNEW

Strip EXIF, GPS, camera, and author metadata from JPG, PNG, and WebP images entirely in your browser.

EXIF and GPS removalNo uploadsJPG, PNG, WebPInstant download

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Last updated: October 27, 2026 • 23 free online tools