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Every page on iotools.cloud — 907 tools across 6 categories, plus the journal and site pages.
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Converters203
All converters- Acceleration Converter
- AES Encryption/Decryption
- Angle Converter
- Any Image to AVIF Converter
- Any Image to GIF Converter
- Any Image to JPG Converter
- Any Image to PNG Converter
- Any Image to TIFF Converter
- Any Image to WebP Converter
- Area Converter
- Atbash Cipher
- AVIF to JPG Converter
- AVIF to PNG Converter
- Base32 Encoder/Decoder
- Base58 Encoder/Decoder
- Base64 Decode
- Base64 Image Preview & Decoder
- Base85 (Ascii85) Encoder/Decoder
- Bech32 Encoder/Decoder
- Bencode Encoder/Decoder
- Binary to Gray Code Converter
- Binary to Text Converter
- Bionic Reading Converter
- BMP to JPG Converter
- BMP to PNG Converter
- Braille Text Generator
- Caesar Cipher
- CBOR Encoder / Decoder
- Chmod Calculator
- Cocktail Measurement Converter
- Color Temperature Converter
- Cooking Measurement Converter
- Coordinate Format Converter
- CRLF/LF Line Ending Converter
- CSS Logical Properties Converter
- CSS Nesting Converter
- CSS to JS Converter
- CSS to JS Style Converter
- CSS to Tailwind Converter
- CSV to JSON Converter
- CSV to SQL Converter
- CSV to XML Converter
- cURL to Code Converter
- Data Storage Converter
- Date-Time Format Converter
- Decibel (dB) Converter
- Delete PDF Pages
- Docker Run to Compose Converter
- Dotenv to JSON Converter
- Electric Charge Converter
- Electric Current Converter
- Energy Converter
- Excel to PDF Converter
- Excel/XLSX to CSV Converter
- File to Base64 Converter
- Force Unit Converter
- Fraction to Decimal Converter
- Frequency Converter
- GeoJSON to WKT Converter
- GIF to JPG Converter
- GIF to PNG Converter
- HAR to cURL Extractor
- HAR to Postman Collection Converter
- Hardness Scale Converter
- HEIC to JPG Converter
- HEIC to PNG Converter
- HEX Color to Name
- HEX to RGBA Converter
- Hex to Text Converter
- HSV to RGB Converter
- HTML Decode
- HTML Stripper
- HTML to Markdown Converter
- iCalendar (ICS) to JSON Converter
- IEEE 754 Floating Point Converter
- Image Compressor
- Image Converter
- Image to ASCII Art Converter
- Image to PDF
- Image to Text Converter
- INI to JSON Converter
- INI to YAML Converter
- Integer Base Converter
- IPv4 Address Converter
- IPv4 Range Expander
- IPv4 to IPv6 Converter
- IPv6 Expander & Compressor
- JPG to PNG Converter
- JSON Schema Generator
- JSON to CSV Converter
- JSON to GraphQL Types Generator
- JSON to HTML Table
- JSON to PHP Array Converter
- JSON to TOML Converter
- JSON to TypeScript Converter
- JSON to XML Converter
- JSON to YAML Converter
- JSON to Zod Schema Generator
- LAB to RGB Converter
- Leet Speak Converter
- Length Converter
- Letter to Number Converter
- List Converter
- Luminance & Illuminance Converter
- Markdown to HTML Converter
- Markdown to Slack Converter
- Merge PDF
- MessagePack to JSON Converter
- MJML to Responsive Email HTML Converter
- Morse Code Translator
- Musical Interval Converter
- Musical Note Frequency Generator
- NATO Phonetic Alphabet Converter
- Network Speed Unit Converter
- Number Notation Converter
- Number to Words Converter
- OpenAPI v2 to v3 Converter
- Organize PDF
- Paper Size Converter
- PDF Compressor
- PDF Converter
- PDF to Excel Converter
- PDF to JPG
- PDF to JPG Converter
- PDF to PNG Converter
- PDF to PowerPoint Converter
- PDF to Word Converter
- Phone Number Parser & Formatter
- PHP Array to JSON Converter
- PHP Deserializer
- Pig Latin Translator
- Pixel, REM & EM Converter
- Playfair Cipher
- PNG to JPG Converter
- Power Converter
- PowerPoint to PDF Converter
- Pressure Converter
- Print Typography Units Converter
- Protect PDF
- Protobuf Text ↔ JSON Converter
- Punycode Converter
- Range List Tool
- Regex Converter
- Reverse List
- RGB to CMYK Converter
- RGBA to HEX Converter
- Roman Numeral Converter
- ROT13 Encoder / Decoder
- Rotate PDF
- Scientific Notation Converter
- Shoe & Clothing Size Converter
- Small Caps Generator
- Sort List
- Space to Tab Converter
- Speed Converter
- Split PDF
- SQL Escape
- SQL Parameterizer
- String Case Converter
- String Obfuscator
- SVG to Base64 Encode
- SVG to JPG Converter
- SVG to JSX Converter
- SVG to PNG Converter
- Tab to Space Converter
- Table to Markdown Converter
- Tailwind Classes to CSS
- Temperature Converter
- Text to ASCII Binary
- Text to Base64 Encode
- Text to Handwriting Converter
- Text to Hex Converter
- Text to Unicode Converter
- Textile Yarn Converter
- TIFF to JPG Converter
- TIFF to PNG Converter
- Timezone Converter
- TOML to JSON Converter
- TOML to YAML Converter
- Torque Converter
- TSV to JSON Converter
- TypeScript Type Stripper
- Unicode to HTML Entities Converter
- Unified Color Space Converter
- Unix Timestamp Converter
- Unlock PDF
- Upside Down Text Generator
- URL Encoder / Decoder
- VCF (vCard) to JSON Converter
- Vigenère Cipher
- Voltage Converter
- Volume Converter
- Watermark PDF
- WebP to JPG Converter
- WebP to PNG Converter
- Weight Converter
- Word to PDF Converter
- XML to CSV Converter
- XML to JSON Converter
- XML to YAML Converter
- YAML to JSON Converter
- YAML to TOML Converter
- YAML to XML Converter
Formatters80
All formatters- .htaccess Formatter
- Access Log Formatter
- ANSI Escape Stripper
- Ansible Playbook YAML Formatter
- Apache Avro Schema Formatter & Validator
- Apache httpd Config Formatter
- C++ Code Formatter
- Code Syntax Highlighter
- CSS Email Inliner
- CSS Minifier & Beautifier
- CSV Formatter
- Dart Code Formatter
- Docker Compose YAML Formatter
- Elixir Code Formatter
- Empty Lines Remover
- Env File Parser
- Git Log Formatter / Prettifier
- Go Formatter
- GraphQL Schema Formatter
- HAR File Formatter
- Haskell Code Formatter
- HJSON Formatter & Validator
- HTML Formatter & Beautifier
- HTML Minifier
- INI Formatter
- Java .properties File Formatter
- Java Code Formatter
- JavaScript Code Formatter
- JavaScript Escape / Unescape
- JavaScript Minifier
- JSON Escape / Unescape
- JSON Flattener
- JSON Formatter
- JSON Minifier
- JSON Schema Validator
- Jsonnet Formatter & Evaluator
- Julia Code Formatter
- Kotlin Code Formatter
- Kubernetes YAML Formatter
- Line Affixer
- Line Break Remover
- Lua Code Formatter
- Makefile Formatter
- Markdown Table Formatter
- NDJSON Formatter & Validator
- Nginx Config Formatter
- OpenAPI / Swagger Validator
- package.json Formatter & Key Sorter
- PHP Code Formatter
- Prisma Schema Formatter
- PromQL Formatter
- Protobuf Formatter
- Python Code Formatter
- R Code Formatter
- Reverse Text
- Ruby Code Formatter
- Rust Code Formatter
- Scala Code Formatter
- SCSS Formatter
- Shell Script Formatter
- Solidity Code Formatter
- SQL Formatter
- SQL Minifier
- Stack Trace Formatter
- SVG Optimizer
- Swift Code Formatter
- Terraform Formatter
- Text Column Aligner
- Text Merger
- Time Duration Formatter
- TOML Formatter
- TypeScript Code Formatter
- Whitespace Trimmer
- XML Formatter
- XML Minifier
- XML Validator
- YAML Formatter
- YAML Validator
- YAML Viewer
- Zig Language Formatter
Generators347
All generators- .htaccess Rule Generator
- Aarakocra Name Generator
- Aasimar Name Generator
- AES Key Generator
- AI Image Generator
- AI Name Generator
- AI Writer
- Album Name Generator
- Anagram Generator
- Angel Name Generator
- Animal Name Generator
- ANSI Terminal Color Code Generator
- Answer Generator
- API Signature Generator
- Arabic Name Generator
- Argon2 Hash Generator
- ASCII Box & Table Generator
- ASCII Text Art Generator
- Aurora / Gradient Blob CSS Background Generator
- Aztec Code Generator
- Baby Name Generator
- Backstory Generator
- Baddie Comebacks Generator
- Bakery Name Generator
- Barbarian Name Generator
- Barcode Generator
- Basic Auth Generator
- Batch QR Code Generator
- Bcrypt Hash Generator
- BIP39 Mnemonic Converter
- Blood Elf Name Generator
- Blood Hunter Name Generator
- Blur Image
- Book Name Generator
- Border Radius Generator
- Brand Name Generator
- British Girl Name Generator
- Brownie Photo
- Business Lorem Ipsum Generator
- Cafe Name Generator
- Campaign URL Builder
- ChaCha20 Key Generator
- Change Contrast
- Changeling Name Generator
- Chicken Name Generator
- Citation Generator
- Clip Image
- Code Screenshot Generator
- Color Emboss Effect
- Color Palette Extractor
- Color Scheme Generator
- Color Swatch Sheet Generator
- Color Tint & Shade Generator
- Colorize Image
- Continent Name Generator
- Cookie Builder
- CORS Headers Builder
- Country Name Generator
- Couple Name Generator
- Cow Name Generator
- CRC Checksum Calculator
- CRC32 Checksum Generator
- Credit Cards Generator
- Cron Expression Generator
- CSP Generator
- CSR (Certificate Signing Request) Generator
- CSS Box Shadow Generator
- CSS Clip-Path Generator
- CSS Cubic Bezier Generator
- CSS Design Token Generator
- CSS Filter Generator
- CSS Flexbox Generator
- CSS Glassmorphism Generator
- CSS Gradient Generator
- CSS Gradient Mesh Generator
- CSS Grid Generator
- CSS Keyframe Animation Generator
- CSS Loading Animation Generator
- CSS Media Query Generator
- CSS Neumorphism Generator
- CSS Scroll-Driven Animation Generator
- CSS Transform Generator
- CUID2 Generator
- cURL Command Builder
- Dark Elf Name Generator
- Darken Image
- Data Matrix Generator
- Data URI Generator
- Date Range Generator
- Demon Name Generator
- Directory Tree Generator
- Discord Username Generator
- DNA / RNA Sequence Generator
- DNS Zone File Generator
- Dockerfile Generator
- Dragon Name Generator
- Dragonborn Name Generator
- Drow Name Generator
- Druid Name Generator
- Duotone Effect
- Dwarf Name Generator
- ECDSA / Ed25519 Key Generator
- EditorConfig Generator
- Elf Name Generator
- Email Generator
- Email Signature HTML Generator
- Emboss Effect
- Env Secrets Generator
- ESLint Config Generator
- Fairy Name Generator
- Fake Data Generator
- Fake Email Address Generator
- Fake IP Address Generator
- Fake Tweet Generator
- Fantasy City Name Generator
- Fantasy Town Name Generator
- Favicon Generator
- Fibonacci Generator
- Firbolg Name Generator
- Flip Image
- Font Generator
- Font Modular Scale Generator
- French Name Generator
- German Name Generator
- Git Unified Diff Patch Generator
- GitHub Actions Workflow Generator
- Githyanki Name Generator
- Gitignore Generator
- Glow Effect
- Gnome Name Generator
- Goblin Name Generator
- Gradient Text CSS Generator
- Grayscale Image
- Greek Name Generator
- Haiku Generator
- Half-Elf Name Generator
- Half-Orc Name Generator
- Halfling Name Generator
- Happy Monday Quotes Generator
- Happy Thursday Quotes Generator
- Happy Wednesday Quotes Generator
- Harry Potter Name Generator
- Hash Generator
- High-Elf Name Generator
- HMAC Generator
- HSTS Preload Header Generator
- HTML Button Generator
- HTML Checkbox Generator
- HTML Email Template Generator
- HTML Generator
- HTML Iframe Generator
- HTML Image Generator
- HTML Input Color Generator
- HTML Input Date & Time Generator
- HTML Input Email Generator
- HTML Input File Generator
- HTML Input Image Generator
- HTML Input Number Generator
- HTML Input Password Generator
- HTML Input Range Generator
- HTML Input Search Generator
- HTML Input Submit Generator
- HTML Input Tel Generator
- HTML Input Text Generator
- HTML Input URL Generator
- HTML Meta Tag Generator
- HTML Progress Bar Generator
- HTML Radio Generator
- HTML Textarea Generator
- htpasswd Generator
- HTTP Request Header Builder
- Human Name Generator
- ICS Calendar Event Generator
- Identicon / Avatar Generator
- Image Placeholder Generator
- ImageKit
- IMEI Number Generator
- Invert Colors
- Invisible Character Generator
- IPv6 ULA Generator
- Island Name Generator
- Japanese Name Generator
- JWK / JWK Set Generator
- JWT Encoder
- Kenku Name Generator
- Kingdom Name Generator
- Kitsune Name Generator
- Knight Name Generator
- Kobold Name Generator
- Kodachrome Effect
- Korean Name Generator
- KSUID Generator
- Kubernetes ConfigMap & Secret Generator
- Kustomize kustomization.yaml Generator
- Last Name Generator
- LaTeX Equation Renderer
- Legendary Creature Name Generator
- Letter Writer
- LinkedIn Summary Generator
- List Randomizer
- Lorem Ipsum Generator
- MAC Address Generator
- Mage Name Generator
- Maze Generator (SVG)
- MD5 Hash Generator
- Merge Images
- Merkle Tree Generator
- Mermaid Diagram Renderer
- Mermaid Name Generator
- Middle Name Generator
- Mock HTTP Response Builder
- Name Picker
- Nano ID Generator
- Nginx Server Block Generator
- Nonce Generator
- Norse Name Generator
- Number Sequence Generator
- Numeronym Generator
- OAuth Authorization URL Builder
- Open Graph & Twitter Card Preview
- Orc Name Generator
- OTP Code Generator
- package.json Generator
- Paragraph Writer
- Passphrase Generator
- Password Generator
- Phone Number Generator
- Pi Generator
- Pixelate Image
- PKCE Code Verifier & Challenge Generator
- Polaroid Photo
- Posterize Effect
- Prettier Config Generator
- Project Name Generator
- PWA Web App Manifest Generator
- QR Code Generator
- QR Code Style Tool
- Random Address Generator
- Random Animal Generator
- Random Birthday Generator
- Random Bitcoin Address Generator
- Random Celebrity Generator
- Random Color Generator
- Random Email Generator
- Random Food Generator
- Random Generator
- Random MLB Team Generator
- Random Movie Generator
- Random Name Generator
- Random Name Generator
- Random Name Picker
- Random NBA Team Generator
- Random NFL Team Generator
- Random Number Generator
- Random Number Wheel
- Random Object Generator
- Random Pokémon Generator
- Random Port Generator
- Random Team Generator
- Random Topic Generator
- Random US Zip Code Generator
- Rap Lyrics Generator
- README Badge Generator
- Response Generator
- Responsive Image srcset/sizes Generator
- Restaurant Name Generator
- Review Generator
- RIPEMD-160 Hash Generator
- Robots.txt Generator
- Roll The Dice
- Roman Name Generator
- Rotate Image
- Routing Number Generator
- RSA Key Generator
- RSS / Atom Feed Generator
- Samurai Name Generator
- School Name Generator
- Sentence Expander
- Sentence Rewriter
- Sepia Tone
- Serene Saturday Quote Generator
- SHA Hash Generator
- SHA-3 Hash Generator
- Share Links Generator
- Sharpen Image
- Ship Name Generator
- Simple Email Signature Generator
- Sitemap XML Generator
- Slug Generator
- Small Text Generator
- Snowflake ID Generator
- Solarize Effect
- Song Name Generator
- Spanish Name Generator
- Species Name Generator
- Speech Writer
- SPF / DKIM / DMARC Record Generator
- SQL CREATE TABLE Generator
- SSH Config File Generator
- SSH Key Generator
- Story Generator
- Story Plot Generator
- Succubus Name Generator
- Superhero Name Generator
- SVG Filter Effects Generator
- SVG Loading Spinner Generator
- SVG Noise Texture Generator
- SVG Pattern Generator
- SVG Sprite Sheet Generator
- SVG Wave Generator
- Tabaxi Name Generator
- Tailwind CSS Color Scale Generator
- Tarot Birth Card Calculator
- Team Name Generator
- TFN Generator
- Thoughtful Tuesday Quotes Generator
- Threshold Image
- Tiefling Name Generator
- Tilt Shift Effect
- Token Generator
- Topic Sentence Generator
- TOTP/HOTP Generator
- Troll Name Generator
- tsconfig.json Generator
- TypeScript Enum Generator
- ULID Generator
- Username Generator
- UUID Generator
- Vampire Name Generator
- vCard Contact File Generator
- VIN Generator
- Vintage Photo
- Warforged Name Generator
- Warrior Cat Name Generator
- WebAuthn Credential Generator
- Webhook Test Payload Generator
- Weighted Random Picker
- Werewolf Name Generator
- Witch Name Generator
- Wizard Name Generator
- Word Cloud Generator
- Word Combiner
- Word Generator
- World Name Generator
- Yes or No
- Yuan-ti Name Generator
- Zalgo Text Generator
Calculators138
All calculators- 1099 vs W2 Income Comparison Calculator
- 3D Printing Filament & Time Estimator
- A/B Test Significance Calculator
- Age Calculator
- Area of Square Calculator
- Aspect Ratio Calculator
- Audio File Size Calculator
- Bandwidth & Download Time Calculator
- Battery Life / Runtime Calculator
- Batting Average Calculator
- Bicycle Gear Ratio Calculator
- Big Integer Calculator
- Bitwise Calculator
- Bitwise Shift Calculator
- Black-Scholes Option Pricing Calculator
- Blood Alcohol Content (BAC) Estimator
- BMI Calculator
- BMR & TDEE Calculator
- Body Fat Calculator
- Break-Even Point Calculator
- Cache TTL Calculator
- CAGR Calculator
- Calorie Burn Calculator
- Camera Depth of Field (DoF) Calculator
- Carbon Footprint Estimator
- Churn Rate & Retention Calculator
- Circle & Ellipse Calculator
- Cloud Bandwidth Cost Estimator
- Compound Interest Calculator
- Compression Ratio Calculator
- Concrete Volume & Bags Calculator
- Confidence Interval Calculator
- Container Garden Planner
- CSS Specificity Calculator
- Customer Lifetime Value Calculator
- Data Transfer Time Calculator
- Date Calculator
- Date Countdown Calculator
- Date Difference Calculator
- DCA (Dollar-Cost Averaging) Calculator
- Debt Repayment Calculator
- Dew Point & Humidity Calculator
- Discount & Markup Calculator
- DNS Record TTL Expiry Calculator
- Docker Container Resource Calculator
- DPI / PPI Calculator
- Electricity Cost Calculator
- EMI Calculator
- ERA Calculator
- ETA Calculator
- EV Charging Cost Calculator
- Fibonacci Retracement Calculator
- FIRE Calculator
- Floor / Tile Area Calculator
- Fuel Economy Calculator
- GCD & LCM Calculator
- Geo Distance Calculator
- GPA Calculator
- GPU VRAM Calculator
- Heart Rate Zone Calculator
- Heat Index & Wind Chill Calculator
- Hours Calculator
- Image Print Size Calculator
- Inflation Calculator
- IPv4 Subnet Calculator
- IPv6 Subnet Calculator
- Irregular Polygon Area Calculator
- ISO Week Number Calculator
- LED Resistor Value Calculator
- LLM API Cost Calculator
- Loan Affordability Calculator
- Loan-to-Value (LTV) Ratio Calculator
- Macronutrient Calculator
- Math Evaluator
- Matrix Calculator
- Meeting Cost Calculator
- Modulo Calculator
- Molar Mass Calculator
- Moon Phase Calculator
- Mortgage Calculator
- Multi-Base Arithmetic Calculator
- Network Latency Calculator
- Network Mask Calculator
- NPV & IRR Calculator
- Ohm's Law Calculator
- One-Rep Max Calculator
- Paint Coverage Calculator
- Password Hash Crack Time Estimator
- Percent Off Calculator
- Percentage Calculator
- Permutation & Combination Calculator
- Pet Age Calculator
- Pet Food Portion Calculator
- Photography Exposure Value (EV) Calculator
- Podcast Audio File Size Calculator
- Pregnancy Due Date Calculator
- Prime Checker
- Prime Factorization Calculator
- Quadratic Formula Solver
- Rate Limit Calculator
- RC Circuit Time Constant Calculator
- Reading Time Calculator
- Recipe Scale Calculator
- Rental Property ROI Calculator
- Resistor Color Code Calculator
- Retirement Savings Calculator
- ROI Calculator
- Rule of 72 Calculator
- Running Pace Calculator
- Salary Calculator
- Sales Tax & VAT Calculator
- Screen Size Comparison Calculator
- SemVer Version Calculator
- Sewing Fabric Yardage Calculator
- Side Hustle Income Tax Calculator
- Sleep Cycle Calculator
- Slugging Percentage Calculator
- Solar Panel Output Calculator
- Split Bill Calculator
- Sprint Velocity & Capacity Calculator
- Stair Rise & Run Calculator
- Statistics Calculator
- Stock & Forex Position Size Calculator
- String Length Calculator
- Survey Sample Size Calculator
- Time Between Dates Calculator
- Time Zone Meeting Planner
- Triangle Calculator
- Uptime & SLA Calculator
- Video Bitrate Calculator
- VO2 Max Estimator Calculator
- Voltage Divider Calculator
- Water & Liquid Tank Volume Calculator
- Wavelength to Frequency Calculator
- Web Vitals Score Calculator
- Weighted Grade Average Calculator
- Wire Size Calculator
- Working Hours & Overtime Calculator
Editors9
All editorsUtilities130
All utilities- Accessible Color Pair Finder
- API Secret Scanner & Redactor
- ASN.1 / DER Parser
- Barcode Check Digit Validator
- Base64 Inspector
- BIN/IIN Card Network Checker
- Bitcoin Address Validator
- Camera Recorder
- Certificate Transparency Log Lookup
- Character Encoding Detector
- Character Frequency Analyzer
- Chronometer
- CIDR Overlap Checker
- Color Blindness Simulator & Checker
- Color Contrast Grid
- Color Distance Calculator
- Color Picker
- Compare Images
- Cookie Parser
- Corrupt a File
- Country Info Lookup
- CPS Test
- Cron Next Run Calculator
- CSS Custom Property Extractor
- CSS Validator
- CSV Column Extractor
- CSV Pivot Table Generator
- Device Information
- DNS Lookup
- DNS Propagation Checker
- Dockerfile Linter
- Domain Extractor
- Dotenv Diff Checker
- Email Deliverability Checker
- Email Extractor
- Email Header Analyzer
- Email Normalizer
- Emoji Picker
- Env Var Template Expander
- Ethereum Checksum Validator
- File Extension Lookup
- File Hash Calculator
- File Type Checker
- Git Cheat Sheet
- GitHub Actions YAML Linter
- Gzip/Zlib/Deflate Tester
- HAR File Performance Analyzer
- Hex Dump Viewer
- HTML Validator
- HTTP Header Analyzer
- HTTP Status Codes
- IBAN Validator
- Image Metadata Viewer
- ISBN Validator
- JavaScript Benchmark Builder
- JavaScript Keycode Info
- JSON Compare
- JSON Key Extractor
- JSON Pointer Evaluator
- JSONPath Tester
- JWT Decoder
- JWT Expiry Checker
- JWT Verifier
- Line Counter
- List Set Operations
- LLM Token Count Estimator
- Luhn Algorithm Validator
- LZ4 Compression Tool
- MAC Address Lookup
- Markdown Link & Image Extractor
- Markdown Outline Extractor
- MD5 Decrypt
- MIME Type Lookup
- MIME Types Cheatsheet
- Morse Code Audio Player
- My IP / IP Lookup
- N-gram Extractor
- One Time Link
- Online Notepad
- Online Pastebin
- Open Graph Checker
- Password Policy Tester
- Password Strength Analyzer
- PDF Signature Checker
- Phone Number Extractor
- Phone Number Validator
- Port Lookup
- QR Code Decoder
- Readability Score Checker
- Redirect Checker
- Regex Cheatsheet
- Regex Explainer
- Regex Tester
- Robots.txt Tester
- Routing Number Validator
- SafeLink Decoder
- SAML Response Decoder
- Scoreboard
- Secure Compare Tool
- Security Headers Checker
- SHA256 Decrypt
- SHA512 Decrypt
- Shell Glob Pattern Tester
- Sitemap XML Parser
- SSL Certificate Decoder
- SVG Path Visualizer
- SWIFT/BIC Validator
- Syllable Counter & Poetry Analyzer
- Text Compare
- Text Replacer
- Text Similarity Checker
- TLS/SSL Config Snippet Grader
- Twitter Character Counter
- Unicode Character Info
- URL Canonicalizer
- URL Extractor
- URL Parser
- User Agent Parser
- UUID Validator & Decoder
- VAT Number Validator
- WCAG Contrast Checker
- Webhook Payload Inspector
- Webhook Signature Validator
- Word Counter
- Word Frequency Counter
- X.509 Certificate Parser
- XML Diff Comparator
- XPath Tester
- YouTube Thumbnail Downloader
- ZIP Code Validator
Journal86
- chmod explained: Linux file permissions without the cargo cult
- CIDR subnets explained: read the slash, find the range, stop guessing
- Container graceful shutdown: SIGTERM is the beginning, not the shutdown
- Content-Type and MIME types: what the header controls and why charset breaks JSON parsers
- CSS color formats: hex, RGB, HSL, and OKLCH
- CSS container queries: responsive components that finally don't care about the viewport
- Cursor vs offset pagination: choose based on data movement, not taste
- Database connection pooling: why your app crashes at 100 users
- DNS records for developers: the records you actually configure
- Docker ENTRYPOINT vs CMD: your container lied to you
- Docker multi-stage builds: shrink your image without breaking the deploy
- dotenv mistakes: secrets, GitHub, and the leak you cannot delete
- Env files and secrets management: `.env` is configuration, not a vault
- Feature flags done right: patterns that do not become permanent debt
- Git bisect: find the breaking commit without guessing
- Git interactive rebase: squash, reorder, and rewrite commits before they hit main
- GitHub Actions secrets: inject configuration without leaking it to logs
- GraphQL schema SDL: how to read the contract before you write resolvers
- gRPC and Protocol Buffers: what `.proto` files compile to and why it matters
- Gzip, Brotli, and Zstd: HTTP compression without accidental identity encoding
- HAR files: the HTTP debug log you didn't know you needed
- Hashing algorithms: MD5, SHA-2, bcrypt, and Argon2 are not interchangeable
- HTTP/2 vs HTTP/3: what changed for your API and what did not
- Idempotency in APIs: make retries safe before the network makes them necessary
- JavaScript memory leaks: the reference that won't die and how to find it
- jq one-liners: filter and transform JSON without writing a script
- JSON to TypeScript interfaces: the generated type is a guess, not a contract
- JWT decoder online: decode a JWT token without mistaking it for verification
- Makefiles for developers: a command interface, not a second language
- Mermaid diagrams in Markdown: architecture views that survive code review
- Modular type scales in CSS: pick a ratio, then check it against real copy
- OAuth 2.0 flows: authorization code with PKCE, and client credentials
- OKLCH and modern CSS colors: why your palette looks off in some browsers
- Open Graph tags: stop your links looking terrible on Slack
- OpenAPI and Swagger spec validation: catch contract bugs before clients do
- QR codes are just URLs in a trench coat (and what else is in there)
- Regex patterns every developer should know (and the traps beside them)
- S3 presigned URLs: direct uploads without handing the browser AWS credentials
- Semantic versioning and package.json: versions only work if you mean them
- Server access logs: the fields that make an incident solvable
- SQL EXPLAIN query plans: read what the database actually did
- SQL indexes: why your query is slow even after you added one
- SSH keys explained: Ed25519 vs ECDSA vs RSA, and the config that stops key roulette
- SSL/TLS certificates: what those fields and expiry dates actually mean
- Structured logging: stop console-logging strings and start logging JSON
- TOML vs YAML vs JSON: config formats ranked by how much they'll annoy you
- UTF-8 and Unicode: why that emoji broke your database
- UUID versions explained: v4, v7, and ULID
- Webhook signature verification with HMAC: verify the bytes before you parse
- WebSockets vs SSE vs long polling: pick the smallest real-time tool
- Why `Pssword1!` is not actually secure
- XML is not dead: read it, diff it, and convert it to JSON without losing meaning
- YAML vs JSON vs TOML: which config format should you actually use?
- Zero-downtime database migrations: schema changes without the 3am rollback
- AES encryption modes: GCM vs CBC, and why the choice isn't cosmetic
- BIP39 seed phrases: what those 12 words actually are and how HD wallet derivation works
- CORS explained: why the browser blocks your request and what to actually do about it
- Git hooks: pre-commit, pre-push, and stopping bad code at the door
- git stash: more than a panic save — partial stash, named stashes, and the rest
- HTTP Cache-Control headers: what no-cache, no-store, and max-age actually mean
- localStorage vs sessionStorage vs IndexedDB vs cookies: browser storage without the 3am regret
- PDF signature verification: what developers need to know
- Rate limiting: how to stop getting 429'd by every API you touch
- 99.9% uptime sounds great — until you do the downtime math
- SSH key types: RSA vs Ed25519 (and when ECDSA fits in)
- TCP vs UDP for developers: when the protocol actually matters
- TypeScript utility types: the ones worth memorizing and the rest
- Why IPv6 ULA addresses are your network's best-kept secret
- Free online tools that will boost your productivity in minutes
- Base64 encoding, explained: what it is, what it isn't, and when to use it
- The Caesar Cipher: the 2,000-year-old encryption that still slaps
- The Atbash cipher: the ancient code that decodes itself
- HTTP status codes: 404 vs 410 vs 301
- Cron expressions: calculate the next run before trusting the schedule
- A JSON toolkit: six browser tasks that save debugging time
- Build curl requests without memorising every flag
- Docker workflow tools: generate, lint, and size containers before they ship
- You cannot hide a window from Zoom on macOS 15
- gitignore: the file that saves you from committing node_modules
- CRLF vs LF: the line-ending bug that breaks CI
- HMAC: how webhooks know you are not lying
- PNG vs JPG vs WebP: choose the format from the image, not habit
- Time zones are a lie: handle them as data in code
- JavaScript key events: use key and code, not keyCode
- CSS gradients: generate them visually, then ship the simple version
- Whitespace bugs: trim before they wreck your day