All tools
72 tools across 7 categories. Use Ctrl K to search by keyword.
Developer Tools
Formatters, validators, encoders, hashes, and converters for everyday dev work.
JSON Formatter Online
Free online JSON formatter — beautify, minify, and explore JSON in a live tree view. 100% browser-based, no upload, no signup, no data leaves your device.
JSON Validator Online
Free online JSON validator — instant pass/fail verdict with the exact line and column of any syntax error. Browser-based, no upload, no signup, no data sent.
HTML Formatter
Clean and indent messy HTML for better readability.
CSS Formatter
Format and organize CSS automatically with configurable brace and indent styles.
SQL Formatter
Beautify SQL queries with proper indentation across Postgres, MySQL, SQLite, and MSSQL dialects.
XML Formatter
Format XML into a clean, readable structure with attribute control.
JSON to XML Converter
Convert JSON data into well-formed XML quickly.
XML to JSON Converter
Transform XML data into clean JSON with attribute preservation options.
Markdown to HTML Converter
Free online Markdown to HTML Converter with a live preview pane — paste GFM, copy sanitized HTML. 100% browser-based, no upload, no signup, no data sent.
HTML to Markdown Converter
Free online HTML to Markdown Converter — paste rich HTML, get clean GFM Markdown. 100% browser-based, no upload, no signup, no data leaves your device.
Base64 Encoder / Decoder
Encode or decode Base64 strings, with UTF-8 and URL-safe variant support.
JWT Decoder
Decode and inspect JWT header and payload safely in the browser. Signature is not verified.
URL Encoder / Decoder
Encode or decode URLs and URL components for safe transmission.
SHA-256 Generator
Generate SHA-256 hashes from text or files using the Web Crypto API.
MD5 Hash Generator
Create MD5 hashes for text or files. Useful for checksums.
UUID Generator
Generate UUID v4, UUID v7 (time-ordered), and ULID identifiers in bulk with format controls.
Regex Tester
Test regular expressions live with match highlighting, capture groups, replace mode, and a cheatsheet.
YAML Formatter
Format and validate YAML, optionally convert to JSON. Line/column error pointing.
Slug Generator
Convert any title or sentence into a URL-safe slug with diacritic stripping, separator control, and batch mode.
CSV ↔ JSON Converter
Convert between CSV and JSON with proper handling of quoted fields, custom delimiters, and type inference.
Design Tools
Interactive CSS generators with live previews. Copy and paste into your project.
CSS Gradient Generator
Design linear, radial, and conic CSS gradients with a live preview.
Box Shadow Generator
Build multi-layer CSS box-shadow styles with offset, blur, and spread controls.
Flexbox Playground
Experiment with Flexbox container and item properties visually.
Border Radius Generator
Create custom rounded corners with per-corner control and squircle presets.
Color Palette Generator
Generate color palettes from a base color using complementary, triad, and other schemes.
Color Contrast Checker
Check WCAG AA/AAA contrast ratios between foreground and background colors. Find a passing color when yours fails.
CSS Animation Generator
Build CSS @keyframes animations visually with sliders for transform, opacity, and color per step. Live preview.
Text Tools
Word counters, case converters, diff checkers, and other text utilities.
Remove Duplicate Lines
Strip duplicate lines from text. Supports case sensitivity and whitespace trimming.
Word Counter
Count characters, words, sentences, and paragraphs with live reading-time estimates.
Case Converter
Convert text between upper, lower, title, camelCase, snake_case, kebab-case, and more.
Text Diff Checker
Compare two pieces of text and highlight differences inline or side by side.
Lorem Ipsum Generator
Generate placeholder text in classic, hipster, or corporate dialects.
Markdown Editor
Write Markdown with a live preview pane, formatting toolbar, autosaved drafts, and .md / .html export.
Image Tools
Compress, convert, resize, and crop images — entirely in your browser.
Compress Image Online
Compress image online — shrink JPG, PNG, and WebP by up to 90% with a live quality slider. 100% browser-based, no upload, no signup, photos never leave you.
JPG to PNG Converter
Free JPG to PNG converter — change JPG or JPEG to lossless PNG in your browser. 100% client-side, no upload, no signup, no watermark, your images stay private.
PNG to JPG Converter
Free PNG to JPG converter — change PNG to JPG with a quality slider and background fill, in-browser. No upload, no signup, no watermark, images stay private.
WebP Converter
Free WebP converter — convert JPG and PNG to WebP, or WebP back to PNG/JPG, in your browser. No upload, no signup, no watermark; images never leave your device.
Resize Image Online
Resize image online — set exact pixel dimensions or scale by percent, lock aspect ratio, pick a format. 100% browser-based, no upload, no signup, no watermark.
Crop Image Online
Crop image online — free or preset aspect ratios (1:1, 4:3, 16:9, 3:2) with a live preview. 100% browser-based, no upload, no signup, no watermark.
HEIC to JPG / PNG
Convert iPhone and Mac HEIC / HEIF photos to JPG or PNG in your browser. Batch ZIP download.
Image to Base64
Encode any image as a Base64 data URL with copy-ready HTML and CSS snippets. Decode data URLs back to files.
EXIF Viewer & Remover
View hidden EXIF metadata (camera, lens, GPS, dates) in JPEG photos and strip it before sharing.
Calculators & Converters
Unit, age, EMI, percentage, file size, time zone, and timestamp tools.
Unit Converter
Convert units across length, mass, temperature, area, volume, speed, and more.
Age Calculator
Calculate exact age in years, months, and days from any birth date.
EMI Calculator
Estimate monthly loan EMI with a full amortization schedule and interest breakdown.
Percentage Calculator
Run quick percentage math: X% of Y, % change between values, add/subtract percentages.
File Size Converter
Convert between bytes, KB, MB, GB, and TB in binary or decimal units.
Time Zone Converter
Convert times across world time zones with DST-aware calculations.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back, in seconds or ms.
Hours & Minutes Calculator
Hours and minutes calculator — add and subtract time entries (HH:MM, one per line) for a total in HH:MM, decimal hours, and minutes. Free, no signup.
BMI Calculator
Calculate Body Mass Index from height and weight (metric or imperial) with WHO classification.
Days Between Dates
Calculate the exact distance between two dates — days, weeks, business days, hours, plus years/months/days breakdown.
Utility Tools
Password generators, QR codes, barcodes, invoices, and PDF utilities.
Password Generator
Generate strong, cryptographically random passwords with character set and length controls.
QR Code Generator
Create QR codes for URLs, text, Wi-Fi, and contact details. Download as PNG or SVG.
Barcode Generator
Generate barcodes in Code128, EAN-13, UPC, Code39, and ITF formats.
Invoice Generator
Build and export professional invoices as PDFs. Saved locally to your browser.
PDF Merger
Combine multiple PDF files into one. Reorder by drag and drop.
PDF Splitter
Split a PDF into separate files by page ranges, or one file per page.
Favicon Generator
Generate a full favicon set (ICO + PNGs + Apple touch + Android Chrome) from one source image, packaged as ZIP.
Free Online Screen Recorder
Free online screen recorder that captures your screen, webcam, and microphone right in the browser. No download, no sign-up, no upload — chunks stream straight to disk so multi-hour recordings work without crashing the tab.
SEO Tools
Build, inspect, and validate the SEO building blocks — meta tags, schema, sitemaps, robots, and OG previews.
Meta Tag Generator
Build a complete set of HTML meta tags — basic SEO, Open Graph, Twitter Cards, viewport — with character-count warnings.
SERP Snippet Preview
Preview how your title, URL, and meta description render in Google search results — desktop and mobile.
hreflang Generator
Build the hreflang link tag set for multilingual or multi-regional sites with BCP 47 validation.
Readability Score
Score your content with six readability formulas — Flesch, Gunning Fog, SMOG, Coleman-Liau, ARI.
Keyword Density Analyzer
Analyze 1-, 2-, and 3-word phrase frequency and density in your content with stopword filtering.
Robots.txt Generator
Build a valid robots.txt visually with user-agent groups, allow/disallow rules, and sitemap URLs.
Robots.txt Tester
Test which URLs your robots.txt allows or blocks. Multi-path testing with rule-match explanation.
Sitemap.xml Generator
Generate a valid sitemap.xml from a list of URLs with bulk lastmod, changefreq, and priority controls.
Sitemap.xml Validator
Validate a sitemap.xml against the protocol — URL format, lastmod, priority, changefreq, limits.
JSON-LD Schema Generator
Generate JSON-LD for 10 schema types — Article, Product, FAQ, HowTo, Recipe, LocalBusiness, Event, and more.
Meta Tag Inspector
Inspect any page's meta tags grouped by Basic, Open Graph, Twitter, Links. Flags missing critical tags.
Open Graph Preview
Preview how your URL renders as a social-share card on Facebook/LinkedIn, X (Twitter), and chat apps.