Every tool you need, one URL away.
239 tools across 13 categories. Free, no signup.
Text & String
30Manipulate, transform and inspect text.
Anagram Finder
Find matching anagrams in a word list.
Camel Case Converter
Convert to camelCase or PascalCase.
Character Frequency Heatmap
Visualize character frequency in text.
Duplicate Line Remover
Remove duplicate lines from text.
Emoji Picker
Search and copy emojis.
Find & Replace
Search and replace text in bulk.
Invisible Character Tool
Detect, copy, and remove invisible characters.
Kebab Case Converter
Convert any text to kebab-case format.
Leet Speak Converter
Convert text into 1337 speak.
Lorem Ipsum Generator
Generate placeholder dummy text.
Developer Utilities
25Everyday utilities for developers.
.gitignore Generator
Build a .gitignore for any combination of languages and stacks.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text.
Chmod Calculator
Toggle Linux file permission bits and read both numeric and symbolic chmod.
Color Code Converter
Convert HEX ↔ RGB ↔ HSL ↔ HSV in one step.
Cron Expression Parser
Parse a cron expression and translate it to plain English.
CSS Specificity Calculator
Calculate selector specificity as ID, class and element weights.
CSS → Tailwind Suggestions
Suggest Tailwind utility classes for a block of CSS.
Docker Run to Compose Converter
Convert a docker run command into a Docker Compose service.
Dockerfile Linter
Check Dockerfiles for common security and portability issues.
ENV File Parser / Validator
Validate .env syntax and inspect key/value pairs.
Data & Code
24Format, validate and convert structured data.
CSV Deduplicator
Remove duplicate CSV rows while preserving order.
CSV to JSON
Convert CSV (with header row) to a JSON array.
CSV to Markdown Table
Convert any CSV to a GitHub-flavoured Markdown table.
HTML Table Extractor
Extract tabular data from pasted HTML tables.
INI / Config File Parser
Parse INI sections and key/value pairs into readable paths.
JSON Array Sorter / Filter Builder
Sort JSON arrays and inspect filter-friendly output.
JSON Diff
Structural diff of two JSON documents.
JSON Flattener / Unflattener
Flatten nested JSON objects into dotted paths.
JSON Formatter / Beautifier
Pretty-print JSON with configurable indentation.
JSON Minifier
Strip whitespace and comments from JSON.
Security & Encoding
17Hashes, encryption, passwords and keys.
AES Encryptor / Decryptor
Encrypt or decrypt text with AES-256-GCM and a passphrase.
Argon2 Hash Generator
Generate Argon2id password hashes with configurable parameters.
Bcrypt Hash Generator
Hash a password with Bcrypt or verify a hash.
HMAC Generator
Compute keyed HMAC signatures (SHA-1, SHA-256, SHA-384, SHA-512).
JWT Generator
Build a signed-token preview from JSON header and payload data.
MD5 Hash Generator
Compute the MD5 hash of any text.
Password Generator
Generate strong, cryptographically-random passwords.
Password Strength Checker
Estimate password entropy and strength in real time.
PGP Encrypt / Decrypt
Work with armored PGP-style text payloads in-browser.
QR Code Scanner / Decoder
Decode QR code images back to text.
Web & SEO
24Meta tags, sitemaps and CSS playgrounds.
.htaccess Redirect Builder
Convert a list of old → new URLs into Apache 301 redirect rules.
Canonical URL Helper
Normalise any URL — force https, drop tracking params, sort query.
CSP Builder
Compose a Content-Security-Policy header from common directive sources.
CSS Animation Builder
Build simple CSS keyframes and animation shorthand values.
CSS Box Model Calculator
Calculate content, padding, border, margin and rendered CSS box sizes.
CSS Clip Path Generator
Generate common CSS clip-path shapes with live preview CSS.
CSS Media Query Builder
Compose responsive media queries for width, orientation and preference features.
Favicon Presence Checker
Inspect pasted HTML for favicon, apple touch icon and manifest declarations.
Hreflang Generator
Generate hreflang link tags for localized page alternates.
HTML Entity Table
Search common HTML entities by symbol, name or numeric code.
Color Tools
14Pick, mix, convert and check colours.
Color Blindness Simulator
Simulate color blindness types.
Color Harmony Explorer
Explore complementary, analogous, triadic, tetradic and monochrome palettes.
Color Mixer
Mix two colors and see the result.
Color Name Dictionary
Search CSS color names and copy their HEX values.
Color Picker
Pick and copy any color in any format.
Contrast Checker
Check WCAG contrast ratios.
CSS Gradient Generator
Create CSS gradients visually.
Dark Mode Pair Checker
Build light and dark color pairs with contrast ratios.
Material Color Finder
Find the closest Material Design palette color for any HEX value.
Named Color Finder
Find the nearest CSS named color.
Numbers & Math
22Calculators, converters and number theory.
Age in Seconds Calculator
Calculate age in seconds, minutes, hours, days and years.
Aspect Ratio Calculator
Calculate proportional width or height from any aspect ratio.
Bitwise Calculator
Calculate AND, OR, XOR, NOT and shifts with binary and hexadecimal output.
Compound Interest Calculator
Calculate final balance, interest earned and contributions over time.
Fibonacci Sequence Generator
Generate Fibonacci numbers with index and comma-separated output.
GCD / LCM Calculator
Greatest common divisor and least common multiple of any list of integers.
Loan / EMI Calculator
Compute monthly payments, total interest and amortisation for a loan.
Math Expression Evaluator
Evaluate mathematical expressions with functions and constants.
Matrix Calculator
Add, subtract and multiply 2x2 matrices, plus determinant values.
Number Base Converter
Convert between binary, octal, decimal and hexadecimal.
Date & Time
16Time zones, durations and timestamps.
Age Calculator
Calculate exact age in years, months, days and hours.
Calendar Week Grid
Render a month grid with ISO week numbers.
Countdown Timer
Live countdown to any future date and time.
Date Add / Subtract
Add or subtract days, weeks, months or years from any date.
Date Difference Calculator
Difference between two dates in every common unit.
Date Format Converter
Parse any date input and format it with a custom pattern.
Day of the Week Finder
Find the day of the week, day of year and ISO week for any date.
Duration Formatter
Format seconds or milliseconds as readable durations.
ISO 8601 Duration Parser
Parse ISO 8601 duration strings into component parts.
Moon Phase Calculator
Estimate the moon phase and illumination for a date.
Image & Media
21Resize, convert and inspect images.
ASCII Art from Image
Turn an image into monospaced ASCII art.
Base64 / Data URI to Image
Decode a base64 string or data URI into a downloadable image.
Color Palette Extractor
Extract a dominant-colour palette from any image with k-means.
EXIF / Metadata Stripper
Remove EXIF, IPTC, XMP and ICC metadata from an image.
EXIF Viewer
View EXIF tags embedded in JPEG and other images.
Favicon Generator
Generate a multi-size favicon.ico plus 16-512 px PNGs from one image.
Grayscale / Sepia Image Filter
Apply grayscale or sepia filters to an uploaded image.
Image Compressor
Shrink an image's file size with a quality slider.
Image Crop
Crop an image to a specified rectangle.
Image Flip / Rotate
Flip horizontally / vertically and rotate by 90, 180 or 270 degrees.
File & Format
18Convert and inspect documents and archives.
CSV Column Picker
Keep selected CSV columns by name or index.
CSV Diff
Compare two CSV files by rows or a key column.
CSV to PDF Table
Render any CSV as a printable, paginated PDF table.
EPUB Metadata Viewer
Read title, creator and publisher metadata from EPUB files.
Excel Formula Explainer
Break down Excel formulas into readable function notes.
File Hash Calculator
Compute MD5, SHA-1, SHA-256, SHA-384 and SHA-512 for any file.
iCalendar Event Generator
Generate a basic .ics calendar event.
JSONL / Array Converter
Convert newline-delimited JSON to an array and back.
Magnet Link Decoder
Decode magnet URI parameters into readable fields.
Markdown to PDF
Render any Markdown text into a styled, paginated PDF.
Network & API
15DNS, IP, ports and HTTP utilities.
API Rate Limit Calculator
Convert request quotas into per-second, per-minute and spacing guidance.
CIDR / Subnet Calculator
Break a CIDR block into network, mask, broadcast, first/last and host count.
curl → Code Converter
Convert a curl command into JS fetch, PowerShell or .NET HttpClient code.
DNS Lookup
Resolve A, AAAA, MX, TXT, NS, CNAME and SOA records via DNS-over-HTTPS.
Email Header Analyzer
Parse email headers and Received hops.
Email Syntax Validator
Validate email address syntax without contacting mail servers.
HTTP Header Inspector
Fetch any URL and review its response headers + security headers.
HTTP Request Tester
Send any HTTP request and inspect the full response.
IP Address Inspector
Classify any IPv4 / IPv6 address: public, private, loopback, link-local, multicast.
MAC Address Tools
Parse, classify and re-format a MAC / EUI-48 address.
Generators & Random
7Mock data, random values and placeholder generators.
Barcode Generator
Generate EAN-13, Code 128 and UPC-A barcode payloads.
IBAN / Luhn Card Generator
Generate syntactically valid demo IBANs and Luhn card numbers.
Mock JSON Generator
Generate simple mock JSON arrays from a field schema.
Placeholder Avatar Generator
Generate SVG placeholder avatars from initials.
Random Address Generator
Generate fake street addresses for mock data.
Random Color Palette
Generate random color palettes as hex values.
Random Name Generator
Generate random example names locally.
Converters & Lookups
6Reference tables and quick validators.
BIC Syntax Validator
Validate SWIFT/BIC code structure.
Country Code Reference
Search common ISO country codes.
Currency Symbol Reference
Search common currency codes and symbols.
ISBN Validator
Validate ISBN-10 and ISBN-13 check digits.
ISSN Validator
Validate ISSN check digits.
Periodic Table Lookup
Search chemical elements by symbol, name or atomic number.