DECODE. CONVERT. VERIFY.
ALL IN YOUR BROWSER.
Free online tools for SSL certificates, SAML tokens, JWTs, and more. Every tool runs 100% client-side — your data never touches a server.
Certificate & SSL
SSL decoders, CSR generators, certificate converters
SSL Certificate Decoder
Decode and inspect SSL/TLS certificates
CSR Decoder
Decode Certificate Signing Requests
Certificate Decoder
Auto-detect and decode any certificate format
PEM Decoder
Decode PEM-encoded certificates, keys, and CSRs
CSR Generator
Generate Certificate Signing Requests
SSL Checker
Check SSL certificate status for any domain
Certificate Key Matcher
Verify if a certificate and private key match
Self-Signed Cert Generator
Generate self-signed SSL certificates
Authentication & Tokens
JWT decoders, SAML tools, OAuth debuggers
SAML Decoder
Decode and inspect SAML responses and assertions
SAML Response Decoder
Decode Base64-encoded SAML responses
SAML Validator
Validate SAML response structure and conditions
JWT Decoder
Decode and inspect JSON Web Tokens
JWT Encoder
Create and sign JSON Web Tokens
JWT Debugger
Debug and edit JSON Web Tokens in real-time
OIDC Debugger
Debug OpenID Connect authorization flows
OAuth Token Inspector
Inspect and decode OAuth access tokens
Encryption & Decryption
AES, RSA, PGP encryption and decryption
AES Encrypt/Decrypt
Encrypt and decrypt text with AES algorithm
RSA Encrypt/Decrypt
Encrypt and decrypt with RSA public/private keys
DES Encrypt/Decrypt
Encrypt and decrypt text with DES algorithm
Text Encrypt/Decrypt
Simple password-based text encryption
File Encrypt/Decrypt
Encrypt and decrypt files with AES-256
PGP Encrypt/Decrypt
Encrypt and decrypt messages with PGP
PGP Key Generator
Generate PGP public/private key pairs
Fernet Encrypt/Decrypt
Python-compatible Fernet encryption and decryption
Hashing
SHA, MD5, HMAC, bcrypt hash generators
SHA-256 Hash Generator
Generate SHA-256 hashes from text or files
SHA-512 Hash Generator
Generate SHA-512 hashes from text or files
SHA-1 Hash Generator
Generate SHA-1 hashes from text or files
MD5 Hash Generator
Generate MD5 hashes from text or files
HMAC Generator
Generate HMAC authentication codes
HMAC-SHA256 Generator
Generate HMAC-SHA256 authentication codes
Bcrypt Generator
Generate and verify bcrypt password hashes
CRC32 Calculator
Calculate CRC32 checksums for data integrity
Encoding & Decoding
Base64, URL, HTML, hex encoders and decoders
Base64 Encoder/Decoder
Encode and decode Base64 strings
Base64 File Encoder
Encode files to Base64 and decode back
Base64 Image Encoder
Convert images to Base64 data URIs
URL Encoder/Decoder
Encode and decode URL components
HTML Encoder/Decoder
Encode and decode HTML entities
Unicode Encoder/Decoder
Convert between Unicode escape sequences and text
Hex Encoder/Decoder
Convert between hexadecimal and text
ASCII Encoder/Decoder
Convert between ASCII codes and text
Number Converters
Hex, binary, octal, decimal converters
Hex to Decimal Converter
Convert hexadecimal numbers to decimal
Decimal to Hex Converter
Convert decimal numbers to hexadecimal
Binary to Decimal Converter
Convert binary numbers to decimal
Decimal to Binary Converter
Convert decimal numbers to binary
Hex to Binary Converter
Convert hexadecimal to binary
Binary to Hex Converter
Convert binary to hexadecimal
Octal to Decimal Converter
Convert octal numbers to decimal
Decimal to Octal Converter
Convert decimal numbers to octal
Data Formatters
JSON, XML, YAML formatters and converters
JSON Formatter
Format and beautify JSON data
JSON Validator
Validate JSON syntax and structure
JSON Minifier
Minify and compress JSON data
JSON to CSV Converter
Convert JSON arrays to CSV format
JSON to YAML Converter
Convert JSON to YAML format
JSON to XML Converter
Convert JSON to XML format
JSON to Table Viewer
Display JSON data as an interactive table
JSON Diff Checker
Compare two JSON objects and find differences
Developer Utilities
UUID generators, cron builders, diff checkers
UUID Generator
Generate UUID v1, v4, and v7 identifiers
GUID Generator
Generate globally unique identifiers
Slug Generator
Generate URL-friendly slugs from text
Cron Expression Generator
Build and explain cron schedule expressions
Unix Timestamp Converter
Convert between Unix timestamps and dates
Diff Checker
Compare two texts and highlight differences
String Length Counter
Count characters, words, lines, and bytes
Random IP Generator
Generate random IPv4 and IPv6 addresses
Network & IP Tools
Subnet calculators, DNS lookup, SSH key generators
Random MAC Generator
Generate random MAC addresses
SSH Key Generator
Generate SSH public/private key pairs
Subnet Calculator
Calculate subnet masks, network ranges, and hosts
CIDR Calculator
Calculate CIDR notation ranges and subnets
DNS Lookup
Look up DNS records for any domain