Dev Tools
Encoding and crypto tools — Base64, JSON and URL encode/decode, hash generators, encryption and decryption, regex testers, code formatters and validators.
Encode & Decode
ASCII Converter — Encode, Decode & View ASCII Table
Encode text to ASCII codes in decimal, hex, binary, and octal. Decode ASCII back to text. Includes interactive ASCII table with search and filtering.
Base64 Encoder/Decoder — Encode & Decode Text Online
Encode text to Base64 or decode Base64 to readable text. Supports UTF-8, emojis, and non-Latin scripts. Drag-and-drop file upload. 100% browser-based.
Text to Binary Converter — Encode & Decode Binary Online
Convert text to binary and binary to text with UTF-8 support. Perfect for learning binary representation and data encoding. All conversion runs in your browser.
Hex to Text Converter — Encode & Decode Hex Online Free
Encode text to hexadecimal and decode hex to text with UTF-8 support. Perfect for working with hex data and debugging. All conversion in your browser.
HTML Entity Encoder — Escape Special Characters Online
Encode special characters to HTML entities or decode them back. Prevents XSS attacks and broken markup. Supports named, decimal, and hex references.
Image to Base64 — Convert JPG, PNG & WebP to Base64 Online
Convert images to Base64 data URIs instantly. Open JPG, PNG, WebP and get data URLs for embedding in HTML, CSS, or JSON. Browser-based, no uploads.
JWT Decoder — Decode, Verify & Debug JSON Web Tokens
Decode JSON Web Tokens instantly — view header, payload, and signature. Inspect claims with human-readable timestamps. Detects expired and weak tokens.
Morse Code Converter — Encode & Decode Morse Online
Encode text to Morse code and decode Morse to text. Supports letters, numbers, and punctuation. Perfect for learning Morse code. Browser-based.
Number Base Converter — Binary, Octal, Decimal, Hex
Convert numbers between binary, octal, decimal, and hexadecimal with step-by-step explanation. Perfect for programmers and students. Browser-based.
Roman Numeral Converter — Convert Roman & Arabic Numbers
Convert between Roman numerals and Arabic numbers (1-3999). Perfect for learning Roman numerals and historical studies. All conversion in your browser.
Unicode Converter — Encode, Decode & Look Up Characters
Encode text to Unicode (UTF-8, UTF-16, HTML entities) and decode back. Look up character information. Bidirectional conversion in your browser.
URL Encoder/Decoder — Percent Encoding Online Tool Free
Encode text to URL-safe percent encoding or decode back to readable text. Supports UTF-8 characters including emojis. Drag-and-drop file upload.
Hash & Cryptography
Adler-32 Checksum — zlib & PNG Fast Integrity Check
Fast 32-bit checksum used by zlib and PNG images. Faster than CRC32 but weaker error detection. Best for quick data integrity screening.
Bcrypt Password Hash Generator — Online Hash & Verify Tool
Generate bcrypt password hashes with adjustable cost factor. Verify passwords against existing hashes. Industry-standard password hashing, fully browser-based.
BLAKE2b-256 Hash — Faster Than MD5, Secure as SHA-3
High-speed cryptographic hash optimized for 64-bit platforms, 256-bit output. Faster than MD5 yet as secure as SHA-3. Adopted by Zcash and Decred blockchains.
BLAKE2b-512 Hash — 512-bit High-Speed BLAKE2 Hash Online
Full 512-bit BLAKE2b output with SHA-512 equivalent security. Runs faster than MD5 on 64-bit CPUs — roughly 3x faster than SHA-512.
BLAKE2s-256 Hash — Embedded & IoT Optimized Hash Tool
Low-resource hash optimized for embedded systems and 32-bit ARM processors. 256-bit output, ideal for IoT sensors, mobile devices, and Raspberry Pi.
BLAKE3 Hash — Fastest Merkle Tree Hash (10x SHA-256)
Next-gen hash algorithm with Merkle tree architecture for full multithreading. 256-bit output, up to 10x faster than SHA-256 on modern multi-core CPUs.
CRC32 Checksum — ZIP/Gzip Data Integrity Checker Tool
32-bit cyclic redundancy check — not cryptographic. Classic data integrity backbone behind ZIP, Gzip, and PNG. Fast but offers zero tamper resistance.
Hash Calculator — MD5, SHA-256 & 25+ Algorithms Online
Calculate hashes using 25 algorithms including MD5, SHA-256, SHA3, BLAKE3, and more. Supports HMAC, hash verification, and uppercase/lowercase output.
Keccak-256 Hash — Ethereum Smart Contract Hash Online
Ethereum's hashing engine — powers smart contract transactions and EIP-191 signatures. Uses original Keccak padding, different from SHA3-256 output.
Keccak-512 Hash — Full Original Keccak Output Online
Full 512-bit output of the original Keccak algorithm. Used in blockchain projects requiring high-security hashing with pre-NIST padding.
MD2 Hash Generator — Legacy RFC 1319 Checksum Online
RFC 1319 early cryptographic hash, 128-bit output. Broken by collision attacks. Use only for legacy system compatibility and academic research.
MD4 Hash Generator — Early Merkle-Damgård Checksum Tool
MD5 predecessor with 128-bit output. Severely broken by collision attacks. For legacy interoperability only — never use for security purposes.
MD5 Hash Calculator — Online Generator & Checksum Verifier
Most widely deployed hash in computing. 128-bit output for file checksums, database indexing, and download integrity. Cryptographically broken.
Password Strength Checker — Free Test Password Security
Test password strength with entropy analysis and crack time estimation. Checks for common patterns, keyboard sequences, and dictionary words. Browser-based.
RIPEMD-160 Hash Generator — Bitcoin Address Core Hash
Core hash behind Bitcoin address generation (P2PKH) with 160-bit output. Also used in PGP/GPG signatures. 80-bit security level.
SHA1 Hash Generator — Online SHA-1 Checksum Calculator
Once the backbone of internet security, now broken by SHAttered collision attack. 160-bit output, deprecated by all major browsers. Legacy Git use only.
SHA-224 Hash Calculator — 224-bit SHA-2 Generator Online
A truncated SHA-256 variant producing 224-bit hashes. Used in TLS and IPsec protocols where shorter digests are preferred. 112-bit security level.
SHA-256 Hash Calculator — Bitcoin & HTTPS Standard Hash
Global industry standard powering Bitcoin and HTTPS certificates. 256-bit output with 128-bit security. The most trusted SHA-2 variant.
SHA3-224 Hash Generator — Keccak Sponge Algorithm Online
FIPS 202 standard based on Keccak sponge construction. 224-bit output, naturally immune to length-extension attacks. Structurally independent from SHA-2.
SHA3-256 Hash Calculator — NIST 3rd Gen Keccak Standard
NIST third-generation hash with 256-bit output. Built on Keccak sponge — shares zero code with SHA-2, providing cryptographic diversity.
SHA3-384 Hash Generator — Post-Quantum Keccak Hash Online
A high-security Keccak sponge variant producing 384-bit hashes. Suitable as a post-quantum alternative to SHA-384 for forward-looking applications.
SHA3-512 Hash Calculator — Maximum Keccak Sponge Output
The largest SHA-3 variant at 512 bits. Keccak-based, NIST-recommended as a cryptographically independent alternative to SHA-512.
SHA-384 Hash Generator — FIPS Government Security Tool
A truncated SHA-512 variant with 384-bit output. FIPS-approved for government and military applications requiring high security margins. 192-bit security level.
SHA-512 Hash Calculator — 512-bit Maximum Security Hash
The highest-output SHA-2 variant at 512 bits. Paradoxically faster than SHA-256 on 64-bit CPUs. 256-bit security level for long-term data protection.
SM2 Encryption — Chinese Asymmetric Crypto Tool Online
SM2 elliptic curve cryptography tool for key generation, encryption, decryption, and digital signatures. Supports C1C3C2 and C1C2C3 modes.
SM3 Hash Calculator — Chinese National Crypto Standard
China national cryptographic hash standard GM/T 0004-2012 with 256-bit output. Mandatory for government agencies, financial institutions, and public security.
SM4 Encryption — Chinese Symmetric Cipher Tool Online
Chinese national symmetric block cipher (GM/T 0002). Supports ECB and CBC modes for key generation, encryption, and decryption. Browser-based.
Whirlpool Hash Generator — AES-Based 512-bit ISO Standard
AES-like block cipher producing 512-bit hashes. ISO/IEC 10118-3 international standard. Used in FreeNet. Structurally unrelated to SHA family.
xxHash32 Hash Generator — Ultra-Fast Database Index Hash
Extremely fast 32-bit non-cryptographic hash approaching RAM bandwidth limits. Used for hash indexing in PostgreSQL and Apache Cassandra.
xxHash64 Hash Calculator — GB/s Throughput Dedup Online
Ultra-high-speed 64-bit non-cryptographic hash with GB/s throughput. Powers ZFS deduplication, database hash tables, and high-speed data sync.
Formatters & Validators
Code Beautifier — Format HTML, CSS & JavaScript Online
Format and beautify HTML, CSS, and JavaScript code online. Auto-detect language, customizable indentation, and instant preview. Works entirely in your browser.
Code Minifier — Minify HTML, CSS & JavaScript Online
Compress and optimize HTML, CSS, and JavaScript by removing whitespace and comments. Reduce file size and improve page load speed. 100% client-side processing.
CSS Unit Converter — px, rem, em, vw, vh, % Online
Convert between px, rem, em, vw, vh, %, pt, cm, mm, ch, vmin, vmax instantly. Set custom root font size and viewport dimensions. Browser-based.
CSV to JSON — Convert CSV to JSON Online Instantly
Convert CSV and TSV files to JSON format online. Supports custom delimiters, header parsing, and nested data structures. Download as .json file instantly.
JSON Formatter — Beautify, Validate & Minify JSON Online
Format, minify, pretty-print, and syntax-highlight JSON data. Features key sorting, custom indentation, tree view, error highlighting, and file upload.
JSONPath Tester — Test Expressions & Debug Results Online
Test JSONPath expressions in real-time with full syntax support. Features dot/bracket notation, wildcards, filters, and match count display. Browser-based.
JSON to CSV — Convert JSON Arrays to CSV Instantly
Convert JSON arrays or objects to CSV format with automatic nested structure flattening. Supports custom delimiters and header options. Download as .csv.
Regex Tester — JavaScript & PCRE Pattern Debugger Tool
Test regex patterns with real-time match highlighting, capture groups visualization, and replacement testing. Supports JavaScript and PCRE flavors.
SQL Formatter — MySQL, PostgreSQL & SQL Server Beautifier
Format and beautify SQL queries for MySQL, PostgreSQL, SQL Server, Oracle, SQLite, and 15+ dialects. Features keyword case conversion and syntax highlighting.
XML Formatter — Beautify, Validate & Minify XML Online
Format and beautify XML with custom indentation. Features syntax highlighting, instant minification, error detection, and CDATA section support.
YAML to JSON — Convert Docker/K8s Config Files Online
Convert YAML to JSON and JSON to YAML with real-time validation. Supports Docker Compose, Kubernetes, CI/CD configs. Bidirectional with error detection.
Dev Generators
Alt Text Generator — Image Accessibility & WCAG Descriptions
Generate alt text for WCAG-compliant images. Extract metadata and colors, craft SEO-friendly descriptions. 100% browser-based — images never leave your device.
Cron Generator — Build Linux Crontab Schedule Online
Build, validate, and understand cron schedules visually. Features field selectors, quick presets, human-readable descriptions, and next execution preview.
Docker Compose to Run — Convert compose.yml to docker run
Convert docker-compose.yml to docker run commands instantly. Supports ports, volumes, env vars, networks, restart policies. Free browser tool, no data uploaded.
Docker Run to Compose — Convert run to compose.yml
Convert docker run to docker-compose.yml instantly. Supports ports, volumes, env vars, networks, and restart policies. Free browser tool, no data uploaded.
RSA/ECDSA Key Generator — PEM Keys for SSH, TLS & JWT
Generate RSA/ECDSA key pairs online for SSH, TLS, JWT, and OpenSSL. Export as PEM format. 100% browser-based — keys never leave your device.
Password Generator — Free Create Strong Random Passwords
Create strong, secure passwords with customizable length and character sets. Uses Web Crypto API for cryptographically secure generation. Browser-based.
Timestamp Converter — Unix Epoch to Date & Time Online
Convert Unix timestamps to dates in ISO 8601, RFC 2822, and UTC. Supports seconds, milliseconds, microseconds, nanoseconds. Duration and code snippets.
UUID Generator — Validate & Decode UUIDs, All Versions
Generate, validate & decode UUID v1-v7, plus bulk NanoIDs and ULIDs. Paste a UUID to inspect its version, variant and timestamp. All client-side.
Network Tools
DNS Lookup — Free All 16 Record Types (A, AAAA, MX, SRV)
Free DNS lookup supporting 16 record types (A, AAAA, MX, SRV, HTTPS, etc.) via Cloudflare, Google, or AliDNS DoH. All queries run in your browser — no server.
HTTP Headers Viewer — Analyze & Audit Response Headers
Paste raw HTTP response headers to analyze cache, security, CORS, and server headers. Detect missing security headers like HSTS, CSP, and X-Frame-Options.
IP Address Lookup — Free Geolocation, ISP & ASN Info
Find geolocation, ISP and ASN for any IP address. Free IP lookup tool with city-level location, timezone and map coordinates. Browser-based privacy.
Ping & Traceroute — Test Network Latency & Server Uptime
Test network latency using HTTP fetch timing. Check server response times and uptime. Includes traceroute commands for Windows, macOS, and Linux.
Port Scanner — Free Check Open Ports & Port Forwarding
Check web port availability and identify services. Full reference with 100+ ports. All checks run in your browser — no data sent to servers.
SSL/TLS Certificate Checker — Free Verify & Analyze
Upload certificate files or paste openssl output to check SSL/TLS details. Verify expiry, issuer, key strength, and security. All processing in your browser.
Subnet Calculator — Free CIDR/IPv4 Range & Host Calc
Calculate IPv4 subnets from CIDR. Get network address, broadcast, host range, subnet mask, and wildcard mask. 100% browser-based — no data sent to any server.
WHOIS Lookup — Domain, IP & ASN RDAP Lookup Tool Online Free
Look up domain, IP, and ASN data via RDAP — the modern replacement for WHOIS. Get registrar, dates, nameservers, DNSSEC, and abuse contact. 100% browser-based.
SEO & Content Tools
Meta Tag Generator — Free Create SEO Title & Description
Create title tags, meta descriptions, Open Graph tags, Twitter Cards, and canonical URLs. Preview Google search results and social media appearance.
Robots.txt Generator — Free Create & Test Rules Online
Generate robots.txt to control search crawlers. Set User-agent, Allow, Disallow, Crawl-delay, and Sitemap. All in your browser — no uploads.
Schema Markup Generator — Free JSON-LD for SEO & Rich
Generate JSON-LD schema markup for rich search results. Supports articles, products, FAQs, reviews and more. Google Rich Results compatible. 100% browser-based.
XML Sitemap Generator — Free Create Sitemaps for Google
Generate XML sitemaps for search engines. Add URLs with priority, change frequency, and last modified date. All processing runs in your browser.
URL Slug Generator — Create SEO-Friendly URL Slugs Online
Convert any text into clean, SEO-friendly URL slugs. Lowercase, remove special characters, replace spaces with hyphens. All processing in your browser.