Category Toolkit
Developer Tools
Essential tools for developers. All run in your browser.
54 toolsLocal-first processingFree forever
JSON Formatter & Validator
Format, validate, and minify JSON with syntax highlighting and error detection.
yft.ai/json-formatter
Base64 Encode / Decode
Encode text to Base64 or decode Base64 strings. UTF-8 safe.
yft.ai/base64
URL Encode / Decode
Encode or decode URLs and query parameters. Supports component and full URL modes.
yft.ai/url-encode
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files.
yft.ai/hash-generator
Regex Tester
Test regular expressions with live match highlighting, capture groups, and flag toggles.
yft.ai/regex-tester
JWT Decoder
Decode JWT tokens to inspect header, payload, and signature. Shows expiration status.
yft.ai/jwt-decoder
Diff Checker
Compare two texts side-by-side or inline with highlighted differences.
yft.ai/diff-checker
UUID Generator
Generate UUID v4 identifiers. Bulk generation up to 1000 at a time.
yft.ai/uuid-generator
Color Converter
Convert colors between HEX, RGB, HSL, and CMYK with a live preview.
yft.ai/color-converter
HTML Formatter & Validator
Format, beautify, and validate HTML code.
yft.ai/html-formatter
CSS Formatter & Beautifier
Format and beautify CSS code with proper indentation.
yft.ai/css-formatter
JavaScript Formatter
Format and beautify JavaScript code.
yft.ai/js-formatter
XML Formatter & Validator
Format, beautify, and validate XML documents.
yft.ai/xml-formatter
SQL Formatter
Format and beautify SQL queries with indentation.
yft.ai/sql-formatter
YAML Validator
Validate YAML syntax and check for errors.
yft.ai/yaml-validator
TOML Validator
Validate TOML configuration file syntax.
yft.ai/toml-validator
Markdown Formatter
Format and clean up Markdown documents.
yft.ai/markdown-validator
HTML Minifier
Minify HTML by removing whitespace and comments.
yft.ai/html-minifier
CSS Minifier
Minify CSS by removing whitespace and comments.
yft.ai/css-minifier
JavaScript Minifier
Minify JavaScript by removing whitespace and comments.
yft.ai/js-minifier
JSON Minifier
Minify JSON by removing whitespace.
yft.ai/json-minifier
XML Minifier
Minify XML by removing whitespace and comments.
yft.ai/xml-minifier
SVG Minifier
Minify SVG files by removing metadata and whitespace.
yft.ai/svg-minifier
Base32 Encoder/Decoder
Encode and decode Base32 strings.
yft.ai/base32-encoder
Hex Encoder/Decoder
Encode text to hexadecimal and decode hex to text.
yft.ai/hex-encoder
ASCII Code Converter
Convert between text and ASCII code values.
yft.ai/ascii-encoder
Binary Text Encoder
Encode text to binary and decode binary to text.
yft.ai/binary-encoder
Punycode Converter
Convert international domain names to Punycode.
yft.ai/punycode-converter
HTML Entity Encoder (Full)
Convert all characters to HTML numeric entities.
yft.ai/html-entity-encoder
URI Component Encoder
Encode and decode URI components for URLs.
yft.ai/uri-component-encoder
JWT Builder
Build JWT tokens from header and payload JSON.
yft.ai/jwt-encoder
Base58 Encoder/Decoder
Encode and decode Base58 strings (Bitcoin format).
yft.ai/base58-encoder
String Escape/Unescape
Escape and unescape special characters in strings.
yft.ai/escaped-string
Cron Expression Generator
Generate and validate cron schedule expressions.
yft.ai/cron-generator
Unix Timestamp Generator
Generate and convert Unix timestamps.
yft.ai/timestamp-generator
URL Slug Generator
Generate SEO-friendly URL slugs from text.
yft.ai/slug-generator
.htaccess Generator
Generate common .htaccess rules and redirects.
yft.ai/htaccess-generator
Nginx Config Generator
Generate common Nginx server configuration blocks.
yft.ai/nginx-config-gen
.gitignore Generator
Generate .gitignore files for common project types.
yft.ai/gitignore-generator
Dockerfile Generator
Generate Dockerfile templates for common frameworks.
yft.ai/dockerfile-generator
README Generator
Generate README.md templates for projects.
yft.ai/readme-generator
License Generator
Generate open source license files (MIT, Apache, GPL).
yft.ai/license-generator
Regex Pattern Generator
Generate common regex patterns for validation.
yft.ai/regex-generator
Random Token Generator
Generate random API keys and tokens.
yft.ai/random-token-generator
Lorem Code Generator
Generate placeholder code snippets in various languages.
yft.ai/lorem-code-gen
HTTP Status Code Lookup
Look up HTTP status codes and their meanings.
yft.ai/http-status-lookup
MIME Type Lookup
Look up MIME types by file extension.
yft.ai/mime-type-lookup
ASCII Table Lookup
Look up ASCII character codes and symbols.
yft.ai/ascii-table-lookup
CSS Color Name Lookup
Look up CSS named colors and their hex values.
yft.ai/css-color-name-lookup
Port Number Lookup
Look up common port numbers and their services.
yft.ai/port-lookup
MD5 Hash Checker
Generate and verify MD5 hash checksums.
yft.ai/md5-hash-checker
SHA-256 Hash Checker
Generate and verify SHA-256 hash checksums.
yft.ai/sha256-hash-checker
SHA-1 Hash Checker
Generate and verify SHA-1 hash checksums.
yft.ai/sha1-hash-checker
SHA-512 Hash Checker
Generate and verify SHA-512 hash checksums.
yft.ai/sha512-hash-checker
About Developer Tools
Our developer tools help you format, validate, convert, and debug code and data structures. From JSON formatting to regex testing, every tool runs locally in your browser for maximum speed and privacy. Whether you're debugging an API response or generating test data, these tools streamline your workflow without requiring any installation.