Developer Workspace

Format, beautify, minify, and validate JSON locally. Choose indentation, sort keys, preserve Unicode, inspect statistics, and copy or download clean output.

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Validate JSON online with precise line and column diagnostics, targeted repair hints, structure inspection, and browser-only processing — no upload, no account.

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View JSON online in an interactive collapsible tree with 6 type badges, 4-scope search, JSON path inspection, structure statistics, and browser-only processing — no upload, no account.

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Explore JSON as a searchable interactive tree with path-aware navigation, collapsible objects and arrays, node inspection, type badges, copy-path actions, statistics, and private browser processing.

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Compare two JSON documents locally with path-aware added, removed, and changed reporting for nested objects, arrays, and primitives — both inputs stay in your browser.

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Minify and compress JSON online — remove whitespace, sort keys, escape Unicode, measure exact byte savings, and download compact JSON privately in your browser without any upload.

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Beautify minified JSON into readable, configurable output with indentation, key sorting, Unicode controls, validation, statistics, and local downloads.

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Repair broken JSON in your browser with conservative, transparent fixes for trailing commas, comments, single quotes, and bare keys — review every change, export only when valid.

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Escape raw text for a JSON string or unescape JSON string content back to readable text. Handle quotes, backslashes, control characters, Unicode, line breaks, tabs, and optional slash escaping privately in your browser.

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Compare two JSON objects or files online — see every added, removed, and changed value with JSONPath, before/after previews, filters, search, and a downloadable report. 100% private.

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Edit JSON online in a private browser-based editor with line numbers, live validation, syntax-aware formatting, key sorting, Unicode support, search, and local export — nothing uploaded.

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Validate a JSON instance against a JSON Schema locally — Draft 4/6/7 and 2020-12 common subset, path-aware errors by keyword, type, format, required, composition, and local $refs. 100% browser-only, no upload.

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Convert JSON to TypeScript interfaces, type aliases, or enums in your browser. Infer nested objects, arrays, unions, readonly modifiers, optional and nullable fields, safe names, and downloadable .ts definitions from any JSON sample.

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Test JSONPath expressions against any JSON document instantly. Evaluate wildcards, recursive descent, filter expressions, slices, negative indexes, and compound &&/|| filters — all private, all in your browser.

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Generate a reviewable JSON Schema from a JSON sample locally. Infer nested objects, arrays, required fields, nullable values, common formats, additionalProperties, and draft metadata — copy or download the result. No upload, no account.

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Encode UTF-8 text and local files to standard or URL-safe Base64 with optional padding, line wrapping, Data URI prefixes, byte statistics, and browser-only processing.

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Decode standard or URL-safe Base64 back to UTF-8 text locally. Handles Data URI prefixes, whitespace, missing padding, strict validation, malformed input errors, and readable output statistics.

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Encode URL components, query values, path segments, form data, or complete URIs locally with UTF-8 percent encoding, + space handling, delimiter preservation, and a URL analyzer.

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Decode percent-encoded URLs and query strings back to readable UTF-8 text — handles %20, +, Unicode escapes, mixed encoding, malformed escape checks, and local URL analysis.

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Generate browser-native UUID v4 or UUID v7 identifiers in bulk, choose developer-friendly output formats, validate pasted UUIDs, and export private local results.

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Generate 1–5,000 UUID v4 or v7 values with advanced JSON, NDJSON, CSV, SQL, JavaScript, newline, and local API-payload export options.

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Convert Unix timestamps and epoch time to readable UTC or local dates, or turn ISO/date-time strings into seconds, milliseconds, microseconds, and nanoseconds. Includes timezone, relative time, difference, and developer outputs.

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Decode and inspect JWT header, payload, signature, registered claims, custom claims, algorithm, timestamps, and expiry state locally without verifying or uploading the token.

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Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes together from text or local files. Compare five digests, verify checksums, and keep processing private in your browser.

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Generate SHA-256 hashes for text or local files, compare five digest algorithms, verify checksums, and export results entirely in your browser.

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Generate MD5 hashes online for checksums and legacy compatibility — text or file, 32-character hex digest, computed locally. Includes SHA-256 for comparison.

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Generate SHA-1 hashes for legacy compatibility and checksum comparison, with modern SHA-2 results in the same browser workspace.

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Generate SHA-384 hashes from text or local files and compare them with MD5, SHA-1, SHA-256, and SHA-512 in one private workspace.

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Generate SHA-512 hashes from text or local files, compare five digest algorithms, verify checksums, and export results privately in your browser.

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Test JavaScript regular expressions against any sample text — every match highlighted, capture groups listed, named groups resolved, replace preview, all flags, pattern history, and a quick-reference cheat sheet. Free, 100% browser-local.

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Build JavaScript-compatible regular expressions from practical presets or a plain-language goal, then test matches, capture groups, flags, and token explanations privately in your browser.

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Parse cron expressions online, explain every field, validate ranges and steps, and preview upcoming job times in your chosen timezone without uploading the expression.

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Build cron expressions from readable frequency presets and editable fields, validate the result, and preview upcoming runs privately in your browser.

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Encode HTML-sensitive characters and Unicode text as named, decimal, or hexadecimal entities. Preview safe source, copy or download output, and keep every conversion private in your browser.

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Decode named, decimal, and hexadecimal HTML entities back to readable text. Inspect entity counts, preview source safely, and copy or download decoded output locally.

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Convert text to UTF-8 or Latin-1 hexadecimal bytes and decode hex back to text — configurable separators, 0x prefix, uppercase or lowercase, byte preview, strict validation, round-trip check, local file input, and private browser-only processing.

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Convert CSS colors between HEX, RGB, RGBA, HSL, HSV, CMYK, HWB, and OKLCH — alpha preview, WCAG contrast, 7 palette harmonies, CSS variable export, and private browser-only processing.

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Generate strong random passwords, passphrases, PINs, and custom patterns — all locally with crypto.getRandomValues(). No uploads, no account, no storage.

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Create and validate Code 128, Code 39, EAN-13, UPC-A, EAN-8, and ITF-14 barcodes locally. Validate check digits, generate single symbols or batch label sheets, customise quiet zones, bar width, and colours, and download SVG or PNG without uploading your data.

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Create static QR codes locally for URLs, text, Wi-Fi, vCards, email, SMS, phone, locations, and events. Customize colors, error correction, quiet zone, size, and an optional logo, then download PNG or SVG.

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Generate Lorem Ipsum placeholder text — paragraphs, sentences, words, or exact character counts. Five vocabulary styles. Export plain text, HTML, Markdown, or JSON. 100% in your browser.

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Generate or audit a .gitignore file in your browser — 82 templates, 12 one-click profiles, smart dedup, validate mode, custom rules, and zero upload. Covers Node, Python, Java, Kotlin, Go, Rust, React, Angular, Vue, Flutter, Unity, Docker, Terraform, and more.

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Convert YAML to valid, formatted JSON online — parse nested objects, arrays, flow collections, multi-document YAML, scalars, comments, and local YAML files privately in your browser.

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Convert JSON to clean YAML online — single file, batch multi-file with ZIP export, or JSON Schema / OpenAPI definition. Nested objects, arrays, quote styles, indentation controls, and 100% private browser processing.

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Format, beautify, and minify SQL in your browser — 10 dialects, heuristic lint hints, keyword casing, protected strings, statement splitting, diagnostics, and session history. No upload, no execution.

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Edit HTML with a live preview — synchronized source editor, WYSIWYG visual pane, sandboxed preview, 5 starter templates, format, minify, validate, find/replace, file import, and download. 100% in your browser.

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Convert JSON to well-formed, syntax-highlighted XML in your browser — live mode, valid/invalid badge, 5 sample presets, @attribute hints, CDATA mode, DOMParser validation, 7 stats, and zero uploads.

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Convert XML to readable JSON in your browser with attribute mapping, namespace options, repeated-element arrays, mixed-content handling, formatting controls, and local file support.

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Minify JavaScript locally with token-aware protection for strings, templates, regex literals, comments, operators, and syntax-sensitive line breaks. Compare bytes, copy, and download privately.

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Format and beautify JavaScript locally with configurable indentation, comment handling, blank-line control, and lint diagnostics for debugger, console.log, TODO comments and loose equality. Copy, download — no upload.

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Minify CSS locally with protected strings, URLs, data URLs, custom properties, calc expressions, safe color and zero-unit reductions, byte savings, diagnostics, history, copy, and download.

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Format and beautify CSS locally with configurable indentation, brace style, property sorting, comment removal, blank-line control, and lint diagnostics. Copy, download, and history — no upload.

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Minify HTML locally by removing ordinary comments and unnecessary inter-tag whitespace while protecting pre, textarea, script, and style content. Compare byte savings, copy, and download the result privately.

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Beautify dense or compressed HTML locally with indentation, line wrapping, attribute formatting, raw-text preservation, heading outline, live mode, and download — all private, no upload.

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Beautify HTML locally with configurable indentation, attribute wrapping, raw-text preservation, document outline, live mode, and instant download — all private, no upload.

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Convert HTML to JSX online with React property mappings, inline style objects, defaultValue, TypeScript support, fragment wrapping, event handlers, boolean props, entities, and download — all private, no upload.

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Format Markdown locally with consistent headings, lists, blank lines, blockquotes, tables, code fences, GFM task lists, strikethrough, diagnostics, history, preview, copy, and download.

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Render Markdown as HTML and preview it live — sanitized, script-free, with a clear source/preview split.

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Convert Markdown to clean, structured HTML locally — headings, paragraphs, links, images, lists, tables with column alignment, nested lists, task lists, blockquotes, setext headings, and fenced code with a sanitized preview.

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Full-featured online Markdown editor with live GFM preview, formatting toolbar, starter templates, find & replace, focus mode, 13-stat panel, history, and three download formats — free, private, no account.

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Create aligned GitHub Flavored Markdown pipe-table syntax visually — edit rows and columns, paste from Excel, Google Sheets, CSV, or an existing Markdown table, set per-column alignment, escape pipes, preview the rendered result, and download .md, .html, or .csv. Free, no upload.

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Build GitHub-compatible Markdown checklists visually — add tasks, indent subtasks, group under headings, import plain text or existing GFM, mark progress, preview, and download .md or .html. Free, 100% browser-local, no upload.

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Generate a linked table of contents from any Markdown document — ATX and Setext headings, anchor-safe GitHub slugs, duplicate disambiguation, hierarchical numbering.

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Extract every link, image URL, and reference from any Markdown document — with source-line numbers, URL type classification, duplicate detection, and CSV / JSON export. Does not crawl destinations. 100% client-side.

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Convert clean HTML back to Markdown — headings, bold, italic, code, tables, lists, links, images, and blockquotes with full GFM support.

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View CSV and TSV files as a fast, searchable, sortable table. Detect delimiters, inspect columns, filter rows, sort mixed data, toggle columns, paginate large previews, and export selected rows locally.

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Format CSV and TSV locally with quote-aware parsing, delimiter conversion, 4 quoting modes, CRLF/LF control, row-shape diagnostics, table preview, and clean download — no upload.

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Convert CSV to clean JSON locally. Parse quoted fields, commas, tabs, semicolons, duplicate headers, numbers, booleans, nulls, nested dot keys, keyed objects, column arrays, or JSON Lines, then copy or download the result.

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Convert JSON arrays, nested objects, and array properties into clean CSV locally. Flatten dot keys, expand arrays to indexed columns, choose delimiters and quotes, preview rows, and download spreadsheet-ready output without uploading data.

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Convert CSV and TSV into aligned GitHub Flavored Markdown tables locally with quote-aware parsing, delimiter detection, safe pipe escaping, per-column alignment, preview, diagnostics, copy, and download.

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Convert tab-separated values to CSV online for free in your browser. Preserve quoted tabs, commas, newlines, and escaped quotes; choose delimiters, headers, line endings, and quoting modes; preview, copy, or download privately.

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Convert CSV to SQL INSERT statements with dialect hints, identifier quoting, NULL and type policies, batching, and row diagnostics — nothing uploaded.

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