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Format JSON, encode Base64 and more
JSON Formatter & Validator Online Free
Format, validate and beautify JSON instantly in your browser.
JWT Decoder Online Free — Inspect Token Claims
Decode and inspect JWT tokens online for free — no signature verification.
Password Generator Online Free
Generate strong random passwords with custom length and character sets.
Color Converter Online Free — HEX, RGB, HSL
Convert colors between HEX, RGB, and HSL formats instantly.
Text to Base64 Encoder Online Free
Encode any plain text string to Base64 instantly.
Base64 to Text Decoder Online Free
Decode a Base64 string back to readable plain text instantly.
SSL Certificate Inspector Online Free
Inspect SSL/TLS certificate details, dates, SANs and fingerprints.
RSA Key Generator Online Free
Generate RSA private and public keys in PEM format.
Encrypt Text Online Free
Encrypt text with a password using AES-GCM.
Decrypt Text Online Free
Decrypt AES-GCM text payloads created by SimpleToolsNow.
Sign Text Online Free — Digital Signatures
Sign text with an RSA private key using RSA-PSS SHA-256.
Verify Digital Signature Online Free
Verify RSA-PSS SHA-256 text signatures with a public key.
Encrypt File Online Free
Encrypt any file with a password and download a .stnenc file.
Decrypt File Online Free
Decrypt .stnenc files created with the Encrypt File tool.
Hash Generator Online Free — MD5, SHA256 & More
Generate SHA-1, SHA-256, and SHA-512 hashes from any text.
URL Encoder Online Free
Encode text or URLs with percent-encoding online for free.
URL Decoder Online Free
Decode percent-encoded URLs and query strings online for free.
UUID Generator Online Free
Generate random UUID v4 values online for free.
Unix Timestamp Converter Online Free
Convert Unix timestamps to human-readable dates and vice versa.
Regex Tester Online Free
Test regular expressions against text and see matches highlighted.
Markdown to HTML Converter Online Free
Convert Markdown text to HTML with a live preview.
CSV to JSON Converter Online Free
Convert CSV data to a JSON array of objects online for free.
JSON to CSV Converter Online Free
Convert a JSON array of objects to CSV format online for free.
Lorem Ipsum Generator Online Free
Generate Lorem Ipsum placeholder text by paragraphs, sentences, or words.
Number Base Converter Online Free
Convert numbers between binary, octal, decimal, and hexadecimal instantly.
Cron Expression Parser Online Free
Parse and explain cron expressions in plain English with next run times.
My IP Address Online Free — What Is My IP?
Find your public IP address instantly, with copy and geolocation info.
HTML Formatter & Beautifier Online Free
Format and beautify HTML code with proper indentation instantly.
XML Formatter & Validator Online Free
Format, indent and validate XML documents instantly in your browser.
YAML Validator & Formatter Online Free
Validate and format YAML documents and detect syntax errors instantly.
JSON to YAML Converter Online Free
Convert JSON to YAML and YAML to JSON instantly in your browser.
SQL Formatter & Beautifier Online Free
Format and beautify SQL queries with proper indentation and keywords.
CSS Minifier Online Free
Minify CSS code by removing whitespace and comments instantly.
JavaScript Minifier Online Free
Minify JavaScript code by removing whitespace and comments instantly.
Chmod Calculator Online Free — File Permission Calculator
Calculate Unix file permissions as octal and symbolic notation.
Excel to JSON Converter Online Free
Convert XLSX Excel sheets to JSON array of objects instantly.