# Utility

Utility Developer Tools

Free browser-based utility developer tools. 164 tools — no installs, no sign-ups, open and use instantly.

164 tools available
🖼️
Image Levels Adjuster
Adjust image levels and gamma curves
🌐
Content-Type Negotiator
Simulate HTTP content negotiation
⏱️
Global Team Scheduler
Schedule meetings for distributed teams
🖼️
Image Border Generator
Add decorative borders to images
🖼️
Image Hue & Saturation
Adjust hue and saturation of images
🔧
CSV Column Reorder
Reorder CSV columns by drag and drop or manual order
🔧
CSV Row Deduplicator
Find and remove duplicate rows from CSV data by one or more key columns
🔧
CSV Transposer
Swap rows and columns of any CSV table instantly in your browser
🧮
Average Calculator
Calculate mean, median, and mode
🧮
Calories Burned Calculator
Estimate calories burned during exercise
🔧
Birthday Day of Week Finder
Discover the weekday for any past or future date
⏱️
Date Range Generator
Produce arrays of dates in any format
🔧
Moon Phase Calculator
See the moon phase for any date in one click
⏱️
Time Duration Calculator
Sum or difference hours, minutes, seconds across multiple values
⏱️
Time Since Calculator
Calculate exactly how long ago any moment was
🧮
Vat Tax Calculator
Add or remove VAT from a price
🧮
Tip Calculator
Calculate tips and split bills
🧮
Area Calculator
Calculate area of any 2D shape
⏱️
Calendar Week Generator
Generate printable weekly calendars
🧮
Bmi Calculator
Calculate BMI from height and weight
🧮
Loan Emi Calculator
Calculate monthly EMI for any loan
🧮
Compound Interest Calculator
Calculate compound interest and final amount
🔐
Hex Encoder / Decoder
Encode and decode hexadecimal text
🔐
Base32 Encoder / Decoder
Encode and decode Base32 data
🔐
Base58 Encoder / Decoder
Encode and decode Base58 data
🔐
Base85 Encoder / Decoder
Encode and decode Base85 data
🔐
PEM Formatter
Format PEM certificates and keys
🔐
PEM Inspector
Inspect PEM block contents
🔐
CSR Decoder
Decode certificate signing requests
🔐
SSH Public Key Parser
Parse SSH public keys
🔐
Checksum Verifier
Verify file checksums quickly
🔐
Random String Generator
Generate random strings with rules
🔐
Nonce Generator
Generate secure nonce values
🔐
Nano ID Generator
Generate Nano ID strings
🔐
Hash Compare Tool
Compare hashes and digests
🔐
X.509 Name Parser
Parse certificate subject fields
📝
Sentence Counter
Count sentences in text
📝
Paragraph Counter
Count paragraphs in text
📝
Keyword Extractor
Extract repeated keywords from text
📝
Stopword Remover
Remove common stopwords from text
📝
N-gram Generator
Generate n-grams from text
📝
Text Normalizer
Normalize punctuation and spacing
📝
Unicode Normalizer
Normalize Unicode text forms
📝
Diacritics Remover
Remove accents from characters
📝
Title Case Formatter
Convert text to title case
📝
CSV Column Extractor
Extract selected columns from CSV
📝
CSV Delimiter Detector
Detect CSV delimiters automatically
📝
Text Column Aligner
Align plain-text columns neatly
📝
List Cleaner
Clean messy copied lists
📝
Bullet Converter
Convert text to bullet lists
📝
Text Fingerprint Generator
Generate text fingerprints
📝
Duplicate Paragraph Remover
Remove repeated paragraphs
📝
Line Wrap Tool
Wrap text to a target line length
📝
Text Chunker
Split long text into chunks
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📝
Reading Level Estimator
Estimate text readability
📝
Case Style Converter
Convert text between naming styles
🔧
Env File Generator
Generate .env example files
🔧
dotenv Parser
Parse .env files safely
🔧
Port Conflict Checker
Check port conflicts in configs
🔧
Conventional Commit Generator
Generate conventional commit messages
🔧
Branch Name Generator
Generate clean Git branch names
🔧
Release Notes Formatter
Format release notes cleanly
🔧
Issue Template Generator
Generate issue templates
🔧
PR Template Generator
Generate pull request templates
🔧
HTTP Mock Response Builder
Generate mock HTTP responses
🔧
JSON Faker Template Builder
Build fake data templates
🔧
Pagination Calculator
Calculate pagination values
🔧
Rate Limit Calculator
Estimate API rate limits
🔧
Feature Flag Config Builder
Generate feature flag configs
🔧
Launch Checklist Generator
Generate launch checklists
🔧
Status Page Incident Template
Generate incident update templates
🔧
Uptime Percentage Calculator
Calculate uptime from downtime
🔧
Form Validation Rule Builder
Generate form validation rules
🔧
Keyboard Shortcut Cheat Sheet Builder
Generate shortcut reference tables
🔧
Embed Code Generator
Generate iframe and script embeds
🔧
Password Generator
Password Generator — free online tool
🔐
JWT Decoder
Encode and decode jwt
🔐
JWT Generator
JWT Generator — free online tool
🔐
Hash Generator
Hash Generator — free online tool
🔐
HMAC Generator
HMAC Generator — free online tool
🔐
UUID Generator
UUID Generator — free online tool
🔐
ULID Generator
ULID Generator — free online tool
🖼️
Image Compressor
Image Compressor — free browser-based tool
🖼️
Image Resizer
Image Resizer — free browser-based tool
🖼️
Image Converter
Convert image formats
🖼️
Image to Base64
Image to Base64 — free browser-based tool
🖼️
Base64 to Image
Base64 to Image — free browser-based tool
🖼️
SVG Optimizer
Optimize svg for better performance
🖼️
SVG to PNG
SVG to PNG — free browser-based tool
🖼️
PNG to SVG
PNG to SVG — free browser-based tool
🖼️
Image Placeholder Generator
Image Placeholder Generator — free online tool
🖼️
WebP Converter
Convert webp formats
🖼️
EXIF Viewer
EXIF Viewer — free browser-based tool
🖼️
Image to ASCII Art
Convert images to ASCII art
🧮
Number Base Converter
Convert number base formats
🧮
Percentage Calculator
Calculate percentage instantly
🧮
Unit Converter
Convert unit formats
🧮
Currency Converter
Convert currency formats
🧮
Roman Numeral Converter
Convert roman numeral formats
🧮
Prime Number Checker
Check prime number in one click
🧮
GCD & LCM Calculator
Calculate gcd & lcm instantly
🧮
Scientific Calculator
Calculate scientific instantly
🧮
Bitwise Calculator
Calculate bitwise instantly
🧮
Aspect Ratio Calculator
Calculate aspect ratio instantly
🧮
Color Math
Color Math — free browser-based tool
⏱️
Date Difference Calculator
Calculate date difference instantly
⏱️
Age Calculator
Calculate age instantly
⏱️
Timezone Converter
Convert timezone formats
⏱️
Cron Expression Builder
Build cron expressions with visual UI
⏱️
ISO 8601 Formatter
Format and beautify ISO 8601 code
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⏱️
Week Number Calculator
Calculate week number instantly
⏱️
Business Days Calculator
Calculate business days instantly
⏱️
Date Format Converter
Convert date format formats
⏱️
Countdown Timer
Countdown Timer — free browser-based tool
🔧
Code Diff Viewer
Compare and diff code viewer
🔧
Cron Expression Tester
Test cron expressions and preview next runs
🔧
Git Command Builder
Build git commands from plain English
🔧
Gitignore Generator
Gitignore Generator — free online tool
🔧
README Generator
README Generator — free online tool
🔧
Changelog Generator
Changelog Generator — free online tool
🔧
License Generator
License Generator — free online tool
🔧
Environment Variable Validator
Validate Environment Variable syntax instantly
🔧
Semver Calculator
Calculate semver instantly
🔧
Package.json Validator
Validate Package.json syntax instantly
🔧
Makefile Generator
Makefile Generator — free online tool
🔧
Docker Compose Generator
Docker Compose Generator — free online tool
🔧
Dockerfile Generator
Dockerfile Generator — free online tool
🔧
SQL Formatter
Format and beautify SQL code
🔧
SQL to NoSQL
SQL to NoSQL — free browser-based tool
🔧
GraphQL Formatter
Format and beautify GraphQL code
🔧
YAML Formatter
Format and beautify YAML code
🔧
YAML to JSON
YAML to JSON — free browser-based tool
🔧
JSON to YAML
JSON to YAML — free browser-based tool
🔧
TOML Formatter
Format and beautify TOML code
🔧
XML Formatter
Format and beautify XML code
🔧
XML to JSON
XML to JSON — free browser-based tool
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🔧
JSON to XML
JSON to XML — free browser-based tool
🔧
CSV to SQL
CSV to SQL — free browser-based tool
🔧
SQL to CSV
SQL to CSV — free browser-based tool
🔧
Mock Data Generator
Mock Data Generator — free online tool
🔧
Lorem JSON
Lorem JSON — free browser-based tool
🔧
API Mock Generator
API Mock Generator — free online tool
📦
QR Code Generator
QR Code Generator — free online tool
📦
QR Code Reader
Read and decode qr code data
📦
Barcode Generator
Barcode Generator — free online tool
📦
PDF to Text
PDF to Text — free browser-based tool
📦
PDF Merger
Merge multiple pdf files into one
📦
PDF Splitter
Split pdf into separate files
📦
File Size Converter
Convert file size formats
📦
Clipboard Manager
Clipboard Manager — free browser-based tool
📦
Screen Resolution Tester
Preview designs at common screen sizes
📦
Browser Feature Detector
Browser Feature Detector — free browser-based tool
📦
Emoji Picker
Pick emoji with visual preview
📦
Icon Search (Font Awesome)
Icon Search (Font Awesome) — free browser-based tool
📦
Google Fonts Preview
Preview google fonts before deploying
📦
Font Pair Suggester
Font Pair Suggester — free browser-based tool
📦
Loading Spinner Generator
Generate CSS loading spinners
📦
CSS Button Generator
Design CSS buttons with live preview
📦
Notification/Toast Generator
Notification/Toast Generator — free online tool
📦
Pricing Table Generator
Pricing Table Generator — free online tool
📦
Terminal Command Explainer
Explain terminal commands in plain English
📦
Chmod Calculator
Calculate chmod permissions visually
🔧
Base64 Encode/Decode
Encode & decode Base64 data
🔧
URL Encoder/Decoder
Encode & decode URLs safely