AWS Direct Connect to Private API Gateway
Two-Path Network Design
End-to-End Deployment
Production Security and Troubleshooting
Build an AI Search Engine Locally: A Complete Hands-On Guide
Real-Time Web Search
LLM Answer Synthesis
Conversational Research Interface
Excel and VBA Fundamentals: A Comprehensive Getting Started Guide
Excel Workflow Automation
Data Processing and Reporting
Hands-On VBA Examples
Top-Rated Self-Hosted VPN Solutions
Six Open-Source VPNs
Self-Hosted Private Networking
Performance and NAT Traversal Comparison
AWS Common Interview Questions: Comprehensive Solutions
Seven AWS Knowledge Areas
35 Core Interview Questions
Cloud Architecture Best Practices
Premium Free and Budget-Friendly Antivirus Software Recommendations
Independent Security Testing
Free and High-Value Options
Protection and Performance Balance
Java Common Interview Questions: Comprehensive Solutions
Seven Core Java Areas
35 Classic Interview Questions
Principles and Best Practices
Essential Tools Directory for Maximizing Professional Productivity
Ten Productivity Tool Categories
Smarter Workflows
End-to-End Productivity Gains
Comprehensive Comparison of Leading AI Search Tools
Real-Time AI Search
Side-by-Side Tool Comparison
Faster Answers and Analysis
AWS S3 + CloudFront + Route53 Complete Deployment Guide
S3 Static Hosting
CloudFront Global CDN
Route 53, Security, and Cost Optimization
Sharing One VPC Endpoint Across Multiple VPCs
Centralized Endpoint Architecture
Private DNS with Route 53 Profiles
Routing, Security, and Cost Decisions
Copilot vs. Cursor vs. Codex: Complete AI Coding Tool Comparison
Side-by-Side AI Tool Comparison
Autocomplete and Agent Selection
Models, Pricing, and Workflows
Designing Your Life: A Practical Guide to Life Design
A Framework for Designing Your Life
Odyssey Plans and Prototyping
Career Decisions, Reflection, and Iteration
Working Identity: How to Reinvent Yourself and Change Careers
Career Identity and Adult Reinvention
Possible Selves and Identity Experiments
Networks, Evidence, and Gradual Change
Real Productivity: Build a Life Operating System
Responsibility, Direction, and Priorities
Trust, Communication, and Collaboration
Renewal and Sustainable Growth
The Complete Job Interview Guide
Preparation, Attire, and Arrival Etiquette
STAR Answers, Common Questions, and Follow-Ups
Video Interviews, Closing, and Checklists
Common Interview Questions and Strong Answers
HR, Hiring Manager, and Final Rounds
Top Questions and STAR Examples
Salary, Follow-Ups, and Checklists
Sharing AWS VPC Endpoints Across VPCs
Interface and Gateway Endpoints
TGW, Peering, and Route 53 Private DNS
Cross-Account Design, Cost, and Security
Working in the U.S.: Visas and Job Search
L-1, H-1B, OPT, and Other Paths
Sponsor Screening and U.S. Résumés
Study ROI, Visa Backlogs, and Scams
Data Analyst Career Guide
Role, Daily Work, and Salary Outlook
Excel, SQL, BI, Statistics, and Python
Learning, Interviews, and Career Paths
Teacher Career Guide: Pay, Qualifications, and Career Paths
School Types and Day-to-Day Work
Pay, Licensure, and Hiring Requirements
Job Outlook and Career Growth
How Local AI Can Edit Code Directly
Agent Architecture and Tool Comparison
Local Model and Hardware Selection
Setup, Testing, Safety, and Troubleshooting
8 Practical Everyday Calculators
Percentages, Change, and Fractions
Averages, Medians, and Deviation
GPA, Date Differences, and Mistakes
Online Developer Tools
JSON, CSV, XML, YAML, and hashing
Cron, encoding, URLs, and HTTP
IPv4, IPv6, CIDR, and subnet calculations
SHA256 Generator
UTF-8 text hash
64-character hexadecimal SHA-256 output
Browser-native Web Crypto processing
SHA512 Generator
UTF-8 text hash
128-character hexadecimal SHA-512 output
Browser-native Web Crypto processing
MD5 Generator
Local MD5 checksum for UTF-8 text
Support uppercase and lowercase output
Compatibility checksum, not secure cryptography
File Hash Calculator
SHA-256, SHA-512 and MD5
Show file name, size and type
Files are only processed in the browser
JWT Decoder
Parse Header, Payload and Signature
Show exp, iat, and nbf timestamps
Decode only, do not verify signature
Cron Generator
Standard five-field cron expressions
Build common schedules visually
Real-time natural-language description
Cron Parser
Supports wildcards, lists, ranges, and step values
Validates and explains each field
Rejects Quartz-specific syntax
Hex → Text
Strictly parse hexadecimal bytes
Supports unspaced, space-separated, and 0x-prefixed formats
Restore text using UTF-8
Text → Hex
Convert Unicode text to UTF-8 bytes
Unspaced, space-separated, and 0x-prefixed formats
Supports multiple languages and emoji
Binary → Text
8-bit binary byte parsing
Continuous or separated input
Restore text using UTF-8
Text → Binary
Convert Unicode text to UTF-8
Fixed 8-bit binary byte
Supports unspaced or space-separated output
ASCII Converter
Convert characters to decimal codes and vice versa
Show Hex and Binary at the same time
Clearly flags values outside standard ASCII
Unicode Converter
Unicode Code Point Analysis
U+, Decimal, and JavaScript Escape
Correct support for emoji and supplementary planes
HTML Entity Encoder
Encoding HTML special characters
Optional encoding of all non-ASCII characters
Safe output of HTML Entities
HTML Entity Decoder
Named, decimal and hexadecimal entities
Safely parse but not execute HTML
Results are always displayed as plain text
Query String Parser
Keep duplicate Query parameters
Supports empty values and percent-encoding
Outputs a key-value table and JSON together
Query String Generator
Add or remove multiple parameter rows
Allow duplicate keys
Correctly generate URL encoded strings
URL Parser
Native URL API parsing
Supports absolute and relative URLs
Split components and Query parameters
Cookie Parser
Parse Cookie Header text
Show original and decoded values
Do not read or save browser cookies
HTTP Header Parser
Keep duplicate HTTP headers
Correctly preserve colons in values
Generates structured JSON alongside the parsed headers
Basic Auth Generator
UTF-8 Basic Auth encoding
Generate Authorization Header
Base64 is encoding, not encryption
Curl Generator
Structured generation of cURL commands
Supports Method, Header, Query and Body
Only generate text, do not perform requests
Curl → Fetch
Converts common cURL options to Fetch
Preserves multiple headers and Basic Auth
Clearly reports unsupported options
Fetch → Curl
Statically parses common Fetch syntax
Supports Header, Body and JSON.stringify
Does not use eval or new Function
MIME Type Lookup
Two-way lookup between file extensions and MIME types
Search by media-type keyword
Uses the project’s built-in local mapping
IPv4 Validator
Strict dotted-decimal IPv4 validation
Checks the 0–255 range and leading zeros
Shows octets, binary, and the uint32 value
IPv6 Validator
Validates full, compressed, and embedded-IPv4 forms
Checks `::` expansion and all eight groups
Shows expanded and RFC 5952-style output
IPv4 → Binary
Converts each IPv4 octet to 8-bit binary
Provides dotted and continuous 32-bit output
Uses the same strict IPv4 validation
Binary → IPv4
Requires exactly 32 binary digits
Accepts continuous, dotted, or whitespace-separated input
Shows each octet and the final IPv4 address
CIDR Calculator
Supports every prefix from /0 through /32
Calculates mask, network, and broadcast
Shows address ranges and host counts
Subnet Calculator
Accepts a CIDR prefix or contiguous subnet mask
Calculates subnet boundaries and usable range
Shows network bits, host bits, and counts
Subnet Mask Calculator
Converts prefixes and subnet masks both ways
Rejects noncontiguous subnet masks
Shows wildcard mask, bits, and address count
IP Range Calculator
Calculates start, end, and usable ranges
Shows counts without enumerating every address
Handles /31 and /32 correctly
Network Address Calculator
Calculates the network address with IP AND Mask
Accepts either a prefix or subnet mask
Shows the complete binary operation
Broadcast Address Calculator
Calculates the broadcast address with Network OR Wildcard
Works with every IPv4 prefix length
Explains the special /31 and /32 cases
HEX → RGB
Convert HEX to RGB
View each color channel
Preview and copy colors
RGB → HEX
Convert RGB to HEX
Choose uppercase output
Preview and copy colors
HEX → HSL
Convert HEX to HSL
Explore hue and lightness
Preview and copy colors
CSS Gradient Generator
Build colorful gradients
Adjust stops and angles
Preview and copy CSS
Box Shadow Generator
Create card shadows
Adjust blur and spread
Preview and copy CSS
Text Shadow Generator
Create text shadows
Try your own preview text
Adjust and copy CSS
Border Radius Generator
Shape all four corners
Link or adjust separately
Copy CSS shorthand
CSS Flexbox Generator
Build flexible layouts
Explore axes and spacing
Preview and copy CSS
CSS Grid Generator
Build equal-track grids
Set rows, columns, and gaps
Preview and copy CSS
CSS Clamp Generator
Create responsive type
Set size and viewport limits
Generate clamp() CSS
px → rem
Convert pixels to rem
Set your root font size
Convert and copy in batches
rem → px
Convert rem to pixels
Set your root font size
Convert and copy in batches
Aspect Ratio Calculator
Simplify aspect ratios
Find missing dimensions
Preview and copy results
WCAG Contrast Checker
Check text color contrast
View WCAG AA/AAA results
Preview accessible colors
CSS Filter Generator
Explore nine CSS filters
Adjust effects in real time
Copy CSS or reset defaults
Word Counter
Count words and characters
Check paragraphs and sentences
Estimate reading time
Character Counter
Count Unicode code points
Compare graphemes and bytes
Inspect emoji and accents
Remove Duplicate Lines
Remove repeated lines
Keep the first occurrence
Choose comparison options
Remove Empty Lines
Remove empty lines
Include whitespace-only lines
Optionally trim retained text
Text Sorter
Sort text in several ways
Compare numbers and lengths
Use natural order or shuffle
Text Diff
Compare text line by line
Identify additions and deletions
Copy the complete diff
CamelCase Converter
Convert names to camelCase
Recognize acronyms and case
Process one name per line
snake_case Converter
Convert names to snake_case
Recognize existing camelCase
Preserve Unicode letters
kebab-case Converter
Convert names to kebab-case
Use consistent word boundaries
Copy or download names
CSV Viewer
Open UTF-8 CSV locally
Inspect columns and records
Scroll through a table preview
CSV Deduplicator
Remove duplicate CSV records
Match rows or selected fields
Keep the first occurrence
CSV → Markdown
Create Markdown tables
Escape pipes inside cells
Copy or download Markdown
Markdown → CSV
Extract a Markdown table
Handle escaped cell pipes
Export properly quoted CSV
Markdown Preview
Preview Markdown as you type
Inspect lists, code, and tables
Copy or download the source
Markdown → HTML
Convert Markdown to HTML
View source and a safe preview
Copy or download a fragment
Random Strings
Choose characters and length
Generate secure random strings
Copy or download a TXT file
Random Numbers
Generate integers or decimals
Sample unique integers
Copy or download the list
Password Generator
Use a secure random source
Include each selected category
Generate passwords locally
Batch UUIDs
Generate UUID v4 in batches
Choose case and hyphens
Create up to 10,000 UUIDs
QR Code Generator
Encode text or URLs locally
Set error correction and colors
Download actual-size PNGs
Barcode Generator
Choose from six barcode formats
Validate lengths and check digits
Download scalable SVGs
JSON → TypeScript
Infer interfaces or type aliases
Merge every object in arrays
Handle optional fields and unions
JSON → Java
Generate Java classes from JSON
Include nested objects and Lists
Add getters and setters
JSON → Go Struct
Create exported fields and tags
Handle slices and pointers
Download Go struct source
JSON → Dataclass
Generate Python dataclasses
Infer nested and optional types
Order fields and defaults correctly
JPG → PNG
Convert JPG photos to PNG
Keep orientation and dimensions
Preview and download locally
PNG → JPG
Convert PNG images to JPG
Choose a background and quality
Compare file sizes and download
JPG → WebP
Convert JPG photos to WebP
Adjust quality and compare sizes
Preview and download locally
PNG → WebP
Convert PNG images to WebP
Keep transparency; adjust quality
Compare file sizes and download
WebP → JPG
Convert static WebP to JPG
Choose a background and quality
Preview and download locally
WebP → PNG
Convert static WebP to PNG
Keep transparency and dimensions
Preview and download locally
BMP → PNG
Convert BMP bitmaps to PNG
Keep original pixel dimensions
Preview and download locally
BMP → JPG
Convert BMP bitmaps to JPG
Choose a background and quality
Compare file sizes and download
GIF → PNG
Extract a GIF’s first frame
Save it as a still PNG image
Keep canvas size and transparency
SVG → PNG
Convert SVG graphics to PNG
Set size and transparency
Choose a file or paste SVG code
SVG → JPG
Convert SVG graphics to JPG
Set size, background, and quality
Choose a file or paste SVG code
Image → Base64
Encode original images as Base64
Copy plain text without a prefix
Download the result as TXT
Base64 → Image
Decode Base64 into an image
Also accepts image Data URIs
Detect, preview, and download
Image → Data URI
Encode images as Data URIs
Include the image type prefix
Copy the text or download TXT
Resize Image
Set image width and height
Keep original proportions by default
Preview and download your image
Change Image Width
Set only the new image width
Height adjusts automatically
Keep proportions and download
Change Image Height
Set only the new image height
Width adjusts automatically
Keep proportions and download
Resize Image by Percentage
Reduce or enlarge by percentage
Use shortcuts for common scales
Preview dimensions and download
Resize Image to Fit
Fit within maximum dimensions
Stay within your chosen size limits
Originals are not enlarged by default
Crop Image
Choose any rectangular crop area
Drag or enter exact pixel coordinates
Crop the original and download
Square Crop
Crop your picture into a square
Start with the largest centered area
Move the selection and download
Circle Crop
Crop a circle with transparency
Save as PNG or WebP
Great for avatars and icons
16:9 Image Crop
Crop a 16:9 widescreen image
Keep the ratio and adjust the position
Great for covers and video images
4:3 Image Crop
Crop your image to a 4:3 ratio
Keep the ratio and adjust the position
Great for photos and presentations
1:1 Image Crop
Crop your image to a 1:1 ratio
Drag to adjust the size and position
Great for square avatars and posts
JPG Compressor
Adjust JPG quality
Keep original dimensions
Compare sizes and download
PNG Compressor
Optimize or reduce colors
Keep transparent areas
Compare output file sizes
WebP Compressor
Adjust WebP quality
Keep size and transparency
Preview the compressed image
Image Quality Adjuster
Compare quality and size
Choose JPG, WebP, or PNG
Preview and download
Image File Size Reducer
Set a KB or MB target
Allow resizing if needed
Check size and image quality
Rotate Image
Rotate by any angle
Keep the full image
Preview and download
Flip Image Horizontal
Mirror left to right
Keep original dimensions
Preview and download
Flip Image Vertical
Mirror top to bottom
Keep original dimensions
Preview and download
Grayscale Image
Adjust grayscale strength
Create a grayscale image
Preserve transparency
Sepia Image
Add a vintage sepia tone
Adjust filter strength
Keep original dimensions
Blur Image
Adjust the blur radius
Soften details and edges
Preview and download
Sharpen Image
Adjust sharpening strength
Boost edge contrast
Keep size and transparency
Brightness Adjuster
Brighten or darken images
Slide to compare effects
Keep original dimensions
Contrast Adjuster
Adjust light and dark tones
Soften or boost contrast
Preview and save
Saturation Adjuster
Adjust color saturation
Choose muted or vivid colors
Keep original dimensions
Hue Adjuster
Shift image hues
Explore color combinations
Keep size and transparency
Exposure Adjuster
Adjust exposure in EV
Compare highlights and shadows
Save the adjusted image
Invert Image
Invert image colors
Adjust inversion strength
Keep transparent areas
Pixelate Image
Create a pixel block effect
Adjust the block size
Keep original dimensions
Image Opacity Adjuster
Adjust overall opacity
Save transparent PNG or WebP
Preview and download
Add Border to Image
Set border width and color
Choose inside or outside
Check final dimensions
Add Rounded Corners
Adjust the corner radius
Keep transparency or use JPG
Keep overall dimensions
Add Text Watermark
Enter text and choose a font
Set position and opacity
Save the watermark in the image
Add Image Watermark
Add a transparent logo
Size it to the main image
Set position and opacity
Remove Image Metadata
Remove common photo data
Keep the correct orientation
Process locally and download
SVG Viewer
Check SVG sizes and counts
Explore structure and source
Read files in your browser
SVG Preview
Choose a preview background
Zoom in on SVG details
Save a static preview copy
SVG Formatter
Organize SVG indentation
Preserve graphics and text
Copy or download the result
SVG Minifier
Reduce SVG file size
Compare sizes and previews
Choose an optimization mode
SVG → Base64
Encode SVG as Base64
Preserve multilingual text
Copy a complete Data URI
Base64 → SVG
Restore SVG from Base64
Check source and preview
Choose original or filtered
SVG Color Changer
Find colors in your SVG
Replace matching colors
Preview and save the palette
SVG Width / Height Editor
Set SVG display dimensions
Keep the original ratio
Preserve internal coordinates
SVG ViewBox Calculator
Read the four viewBox values
Check ratios and scaling
Copy generated attributes
SVG Path Viewer
View SVG or standalone paths
Count commands and bounds
Adjust fill and stroke
SVG Background Generator
Create colors and gradients
Choose dots or grid patterns
Set dimensions and save SVG
PNG → ICO
Convert PNG to ICO
Choose sizes, keep transparency
Adjust crop and background
JPG → ICO
Turn JPG photos into ICO
Fit the image or crop the center
Choose sizes and padding
Favicon Generator
Create website favicons
Preview actual icon sizes
Download icons and copy links
Multi-size Favicon
Choose your icon sizes
Create PNG and ICO together
ZIP only the files you select
Apple Touch Icon
Create Apple home screen icons
Set a solid background and padding
Download PNGs and copy links
Android Icon Sizes
Create common Android sizes
Prepare larger PWA icons
Choose the ZIP folder layout
Emoji → Favicon
Make an icon from one emoji
Adjust emoji size and background
Download ICO, PNG, or ZIP
Image Dimensions
Check width and height
See ratios and megapixels
Use the displayed orientation
Image File Size
Check the original file size
Compare KB/MB and KiB/MiB
See format and dimensions
Image DPI Viewer
Read embedded image DPI
Compare density sources
Calculate print dimensions
Image Metadata Viewer
Browse image metadata
Review camera and GPS data
Copy details or coordinates
EXIF Viewer
Check camera and exposure
Review date and orientation
Find stored GPS information
Image Color Picker
Click or tap to pick colors
See color codes and alpha
Magnify original pixels
Pixel Color Picker
Read pixels by X/Y position
Move one pixel at a time
Check color and transparency
Dominant Color
Find the dominant color
See codes and estimated share
Account for transparency
Color Palette Extractor
Extract a color palette
Choose 3 to 10 colors
Copy HEX or CSS variables
Average Image Color
Find the average color
Compare averaging methods
Weight pixels by alpha
Image Histogram
View RGB and brightness
Compare channel histograms
Check statistics and range
RGB Channel Viewer
Inspect red, green, and blue
Switch color or grayscale
Download full-size channels
App Icon Generator
Prepare icons for platforms
Choose the sizes you need
Download an organized ZIP