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117+ professional tools powered by 100% client-side processing. No accounts. No servers. No data collection. Ever.
Validate, prettify, and minify JSON data instantly in your browser. No data leaves your device.
Test regular expressions with real-time highlighting, match groups, and 8 built-in presets for common patterns.
Encode text to Base64 or decode Base64 strings instantly. Useful for API tokens, data URIs, and debugging.
Generate strong, random passwords with customizable length, character sets, strength meter, and crack time estimate.
Convert colors between HEX, RGB, and HSL with interactive sliders. Outputs Tailwind CSS classes.
Decode and inspect JSON Web Tokens. View header, payload, and signature without any server calls.
Convert Unix timestamps to human-readable dates and vice versa. Supports multiple timezone formats.
Sanitize text before sending to AI. Removes PII, API keys, URLs, code comments, and estimates token count.
The first dev tools site that lets you chain multiple tools into a processing pipeline. Base64 decode → JSON format → Extract path — all in one flow.
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Validate, prettify, and minify JSON data instantly in your browser. No data leaves your device.
Remove emails, phone numbers, and PII from text before pasting into AI tools. Safe AI prompting made easy.
Encode text to Base64 or decode Base64 strings instantly. Useful for API tokens, data URIs, and debugging.
Encode or decode URLs and query parameters. Handle special characters safely for web development.
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text. Client-side cryptographic hashing.
Decode and inspect JSON Web Tokens. View header, payload, and signature without any server calls.
Convert XML markup to JSON format instantly. Handles nested elements, attributes, and arrays.
Convert Unix timestamps to human-readable dates and vice versa. Supports multiple timezone formats.
Test regular expressions with real-time highlighting, match groups, and 8 built-in presets for common patterns.
Generate UUID v4, NanoID, ULID, and CUID identifiers. Batch generate up to 50 IDs at once with one click.
Generate strong, random passwords with customizable length, character sets, strength meter, and crack time estimate.
Parse and explain cron expressions in plain English. See the next 5 scheduled run times instantly.
Format and beautify SQL queries with proper indentation. Supports SELECT, JOIN, subqueries, and CTEs.
Convert between decimal, binary, octal, and hexadecimal. View signed/unsigned integer representations.
Generate security headers for your website. Export as Nginx, Apache, Next.js, Express, Vercel, or Cloudflare config.
Explore JSON structure, flatten to dot-notation paths, and query nested values with dot-path syntax.
View CSV data as a sortable, searchable table. Export to JSON or SQL INSERT statements.
Generate SEO meta tags, Open Graph, and Twitter Card markup with live Google and social previews.
Convert JSON data to TypeScript interfaces instantly. Handles nested objects, arrays, optional fields, and union types.
Convert between YAML and JSON formats bidirectionally. Auto-detects input format with instant conversion.
Convert JSON arrays to CSV format with automatic header extraction. Download as .csv file instantly.
Generate JSON Schema (draft-07) from any JSON data. Infers types, required fields, and nested structures automatically.
Generate QR codes from any text or URL. Customize size, error correction, and colors. Download as PNG.
Convert images to Base64 data URIs instantly in your browser. No upload needed — 100% client-side and private.
Calculate Unix file permissions with an interactive checkbox interface. See numeric (755) and symbolic (rwxr-xr-x) notation.
Press any key to instantly see its JavaScript event properties — key, code, keyCode, which, and location.
Interactive HTTP status code reference. Search and browse all status codes grouped by category with descriptions.
Encode special characters to HTML entities or decode HTML entities back to readable text. Supports named and numeric entities.
Preview how your website will appear when shared on social media. See Google, Twitter, and Facebook card previews.
Generate .gitignore files for any project. Select from templates for Node.js, Python, Java, Go, Rust, and more.
Minify HTML by removing comments, whitespace, and unnecessary characters. See original vs minified size and savings percentage.
Minify JavaScript by removing comments, whitespace, and line breaks. See compression stats and copy the result.
Validate JSON with detailed error messages showing exact line and column positions. View deep structure statistics.
Analyze IPv4 and IPv6 addresses. View binary representation, decimal value, address class, and detect private/loopback/reserved ranges.
Format and prettify minified HTML with proper indentation. Choose 2 or 4 space indent. Clean up messy HTML markup.
Format and beautify minified JavaScript with proper indentation, line breaks, and structure.
Escape or unescape backslash sequences in strings. Handle \n, \t, \\, \", \' and more.
Generate random numbers with custom range, count, uniqueness, and sorting options. Includes generation history.
Generate placeholder images in SVG or PNG format. Customize dimensions, colors, and text. Download or copy SVG code.
Optimize SVG files by removing metadata, comments, editor data, and unnecessary attributes. See file size reduction.
Generate HTML tables visually. Edit cells, configure headers, borders, and striped rows. Copy the generated HTML code.
Compare two JSON objects and see added, removed, and unchanged properties. Deep recursive comparison with path display.
Look up DNS records for any domain. Query A, AAAA, CNAME, MX, TXT, and NS records using Cloudflare DNS.
Compare two text documents side by side. View line-by-line diff with additions, removals, and unchanged lines. Copy merged result.
Validate YAML syntax and convert to JSON. Instant error detection with line numbers.
Visual crontab expression builder. Select minute, hour, day, month, and weekday with instant preview and human-readable descriptions.
Create JWT tokens for testing. Edit header, payload, and secret. Color-coded output with structure breakdown.
Analyze password strength with detailed scoring, crack time estimation, and improvement suggestions.
Parse any URL into its components — protocol, hostname, port, path, query parameters, and hash. Copy individual parts.
Resize images in the browser. Set custom dimensions, choose output format (PNG/JPEG/WebP), adjust quality. No upload required.
Create realistic Twitter/X and Instagram post mockups. Customize name, avatar, text, engagement stats. Download as image.
Generate QR codes for WiFi network sharing. Enter SSID and password, customize colors, download PNG. Guests scan to connect.
View hidden EXIF metadata in JPEG images — camera info, GPS location, timestamps. Privacy warning for location data.
Draw your signature on a canvas and download as transparent PNG or SVG. Overlay on PDFs in any editor. 100% private.
Convert CSV data to SQL INSERT statements and back. Auto-generates CREATE TABLE. Supports quoted fields and escaping.
Check if your password has appeared in data breaches. Uses k-anonymity — your full password never leaves your browser.
Write HTML, CSS, and JavaScript and see a live preview instantly. Templates included. Split view or fullscreen preview.
Merge multiple PDF files into one. Drag to reorder. 100% client-side — files never leave your browser.
Split PDF files — extract single pages, page ranges, or every page as individual PDFs. 100% client-side.
Convert JSON to Zod TypeScript schemas. Auto-detects emails, URLs, UUIDs, and dates. Copy-ready output.
Convert docker run commands to docker-compose.yml. Supports 25+ flags including ports, volumes, env vars, networks.
Encrypt and decrypt text with AES-256-GCM. PBKDF2 key derivation, 100% client-side via Web Crypto API.
Compress images to WebP, JPEG, or PNG right in your browser. Adjust quality, resize, batch process — 100% private.
Generate HMAC signatures with SHA-1, SHA-256, SHA-384, or SHA-512. Hex and Base64 output. Web Crypto API powered.
Calculate percentages instantly — X% of Y, percentage increase/decrease, percentage change between two values.
Convert between bytes, KB, MB, GB, TB and their binary equivalents (KiB, MiB, GiB). SI and IEC units.
Convert length, weight, temperature, speed & volume units. Metric, imperial, and everything in between.
Convert text between UPPER CASE, lower case, Title Case, camelCase, snake_case, and more.
Count words, characters, sentences, and paragraphs in your text. Estimate reading time instantly.
Compare two blocks of text and highlight the differences. Perfect for code reviews and document comparison.
Advanced find and replace with regex support. Process large text files entirely in your browser.
Live side-by-side Markdown editor with instant HTML preview. Supports headings, lists, code, tables, and more.
Rewrite text in different tones — professional, casual, formal, friendly, concise, or detailed. Client-side NLP.
Convert HTML to clean Markdown. Handles headings, links, images, tables, code blocks, and blockquotes.
Deep-clean text by removing invisible characters, fixing encoding, normalizing whitespace, and stripping HTML.
Generate customizable Lorem Ipsum placeholder text. Choose paragraphs, sentences, or words.
Generate clean, SEO-friendly URL slugs from any text. Supports custom separators, transliteration, and max length.
Build markdown tables visually with a spreadsheet-like editor. Add rows, columns, and alignment with live preview.
Escape and unescape strings for JSON, HTML, URL, JavaScript, and XML. Handles special characters and Unicode.
Browse and search emojis by category. Click to copy any emoji to clipboard. Recent emoji history included.
Count characters, words, sentences, paragraphs, and bytes. See reading time, speaking time, and social media platform limits.
Convert text to binary, hexadecimal, or octal and back. Six conversion modes for encoding and decoding.
Convert plain text and basic Markdown to HTML. Handles paragraphs, headings, lists, links, and text formatting.
Count bytes in text with UTF-8, UTF-16, and ASCII encoding comparison. See character, word, and line statistics.
Convert typed text into realistic handwritten images. Multiple fonts, ink colors, ruled paper. Download as PNG.
Convert colors between HEX, RGB, and HSL with interactive sliders. Outputs Tailwind CSS classes.
Create beautiful CSS gradients with visual controls. Supports linear, radial, and conic gradients with Tailwind output.
Design CSS box shadows with live preview and multiple layers. Export as CSS or Tailwind arbitrary values.
Visual CSS Flexbox generator with live preview. Adjust direction, wrap, justify, align, and child flex properties.
Visual CSS Grid layout generator. Define rows, columns, gaps, and template areas with instant code output.
Create custom CSS border-radius values visually. Control each corner independently with live preview and code output.
Calculate and convert aspect ratios for responsive design. Find dimensions, compare common ratios like 16:9 and 4:3.
Generate beautiful color palettes from a base color. Get complementary, analogous, triadic, and monochromatic schemes.
Minify CSS by removing comments, collapsing whitespace, and stripping unnecessary semicolons. View compression stats.
Convert CSS properties to Tailwind CSS utility classes. Supports colors, spacing, typography, layout, and more.
Convert between CSS units: px, rem, em, %, vw, vh, pt, cm, mm, and in. Configurable base font size.
Format and beautify minified CSS with proper indentation, one property per line, and grouped selectors.
Simulate how your colors appear to people with different types of color vision deficiency. Test accessibility of color palettes.
Convert between HEX and RGB color formats. Also shows HSL, RGBA, CSS variable, and Tailwind class formats.
Create favicons with text or emoji. Customize colors, shape, size. Download in multiple sizes from 16x16 to 256x256.
Visual CSS clip-path builder. Choose circles, polygons, stars, arrows, and more. Live preview with copy-ready CSS.
Build CSS keyframe animations visually. 10 presets (bounce, fade, shake, rotate). Edit keyframes, timing, and iterations.
Mix two colors with adjustable ratio. See the result in HEX, RGB, and HSL. View full gradient between colors.
Generate CSS triangles visually. Choose direction, size, and color. Live preview with copy-ready border-trick CSS.
Sanitize text before sending to AI. Removes PII, API keys, URLs, code comments, and estimates token count.
Prepare text for AI summarization. Remove noise, format structure, estimate tokens, and generate optimal summarization prompts.
Prepare code snippets for AI explanation. Strip sensitive data, add context markers, detect language, and generate explanation prompts.
Describe what you want to match in plain English and get an optimized prompt for AI to generate the perfect regex pattern.
Paste your git diff and generate optimized prompts for AI to write conventional commit messages. Supports conventional commits format.
Extract TODO, FIXME, HACK, and NOTE comments from code. Generate AI prompts to prioritize and resolve them.
Count tokens for GPT-4, Claude, Gemini & Llama. See cost estimates per model. 100% client-side BPE estimation.
Check if your prompt fits GPT-4, Claude, Gemini context windows. Estimate tokens, usage %, and API costs per model.
Paste a git diff, choose review focus (security, performance, bugs), get a structured prompt for AI code review.
Paste JSON, choose a mode (analyze, transform, validate, document, mock), get a structured AI prompt instantly.
Fill in project details, pick a style (minimal, detailed, badges, startup), get a polished AI prompt for README.md generation.
Compare API costs across GPT-4, Claude, Gemini, Llama, DeepSeek & more. Estimate per-request, daily, and monthly expenses.
Paste code, choose review type (review, refactor, explain, document, test), get expert-level AI prompts with language-specific focus.
Browse 117+ tools by category or press Ctrl+K to search.
Smart Paste auto-detects your content and routes to the right tool.
100% browser-side processing. Copy, share, or chain into pipelines.
Generate .gitignore files for any project. Select from templates for Node.js, Python, Java, Go, Rust, and more.
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Tool Pipeline lets you chain multiple tools together — a feature no other dev tool site offers.
Our real-time Privacy Dashboard shows exactly what permissions are used. Zero tracking, zero data collection.
Paste any content and Smart Paste Detector auto-routes to the correct tool — JSON, JWT, UUID, Base64, and more.
Static-generated pages, zero client-server round trips, and instant tool switching. Sub-100ms response times.
Convert between popular data formats instantly — all processing happens in your browser.