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D2i Technology DevTools
    Tools
    Most used by developers
    Share Secret Message Send a File Password Generator Key Generator Cron Expression Builder WebSocket Tester HTML to PDF PDF to Text JSON Pretty JSON Minify JSON Validate JWT Decode Base64 Encode Base64 Decode URL Encode URL Decode SHA-256 MD5 UUID v4 Bcrypt Hash Regex Test Unix Timestamp Now Unix to RFC3339
    Encoding
    Base64 URL Encode Base64 URL Decode Hex Encode Hex Decode Path Escape Path Unescape HTML Escape HTML Unescape Base32 Encode Base32 Decode Unicode Codepoints JSON Encode JSON Decode Punycode Encode Punycode Decode Gzip Compress Gzip Decompress Basic Auth Header
    Hashing
    SHA-1 SHA-224 SHA-384 SHA-512 SHA-512/224 SHA-512/256 CRC32 CRC32 Castagnoli Adler32 FNV-1a 32 FNV-1a 64 FNV-1a 128 HMAC MD5 HMAC SHA-1 HMAC SHA-256 HMAC SHA-384 HMAC SHA-512 Compare Digests SHA-256 Prefix 1 SHA-256 Prefix 2 SHA-256 Prefix 3 SHA-256 Prefix 4 SHA-256 Prefix 5 SHA-256 Prefix 6 SHA-256 Prefix 7 SHA-256 Prefix 8 SHA-256 Prefix 9 SHA-256 Prefix 10 SHA-256 Prefix 11 SHA-256 Prefix 12 SHA-256 Prefix 13 SHA-256 Prefix 14 SHA-256 Prefix 15 SHA-512
    Crypto
    Bcrypt Verify PBKDF2 SHA-256 Secure Compare
    Formatters
    PEM Blocks JSON String Escape Lines to JSON Array YAML to JSON JSON to YAML CSV to JSON JSON to CSV JSON to Go JSON to TypeScript Certificate Details JWT Sign XML Pretty XML to JSON SQL Formatter .env to JSON JSON to .env JSON to Python JSON to SQL INSERT Sort JSON Keys
    Generators
    Random Hex (8 bytes) Random Hex (16 bytes) Random Hex (32 bytes) Random Hex (64 bytes) Random Base64 Random Integer ULID QR Code Lorem Ipsum Docker Compose Builder Compose to docker run Dockerfile Builder UUID v7 Test Data
    Text
    ROT13 Reverse String Uppercase Lowercase Title Case Trim Space Collapse Whitespace Slugify Sort Lines Unique Lines Reverse Lines Count Lines Count Words Count Characters Count Bytes Regex Replace UUID Generator Strip alpha Strip digit Strip space Strip lower Strip upper Strip punct Normalize LF CRLF to LF LF to CRLF Remove Empty Lines Tabs to 4 Spaces Trim Left Trim Right Add Quotes Case Convert Text Diff HTML to Text Shell Quote Markdown Preview
    Network
    Validate IPv4 Validate IPv6 Expand IPv6 Parse CIDR CIDR Contains IPv4 to Integer Hostname Lookup URL Parser /8 Network Mask Query String to JSON /16 Network Mask JSON to Query String /24 Network Mask /32 Network Mask /40 Network Mask /48 Network Mask /56 Network Mask /64 Network Mask /72 Network Mask /80 Network Mask HTTP Status
    Date & Time
    RFC3339 to Unix Format Unix Add Duration Unix Milliseconds to RFC3339 RFC3339 to Unix Milliseconds Unix Seconds to Milliseconds Unix Milliseconds to Seconds Timezone Convert Cron Explainer Date Difference
    Converters
    Decimal to Binary Binary to Decimal Decimal to Hex Hex to Decimal Decimal to Octal Octal to Decimal Int8 Max Big Int Add Int16 Max Float64 to Bits Bits to Float64 Chmod Calculator Color Converter Contrast Check Int32 Max Percentage Number to Words Semver Compare Byte Size Aspect Ratio Int64 Max
    Image manipulation
    Image info Resize image Resize max edge JPEG quality PNG to JPEG JPEG to PNG Grayscale Flip image Rotate image Crop image Image to Data URL
    Web testing
    WebSocket Tester HTML to PDF PDF to Text

    Category

    Image manipulation

    Choose a tool below, or expand a group in the sidebar. Search from the header anytime.

    Image info Show width, height, format, and size. Resize image Resize to exact width and height (pixels). Resize max edge Scale so the longest side matches max edge. JPEG quality Re-encode as JPEG with chosen quality. PNG to JPEG Convert PNG (or other) to JPEG. JPEG to PNG Convert to lossless PNG. Grayscale Convert image to grayscale. Flip image Flip horizontally or vertically. Rotate image Rotate 90°, 180°, or 270° clockwise. Crop image Crop a rectangle (x, y, width, height). Image to Data URL Turn an image into a data: URL.
    D2i Technology

    AI-native engineering · accessibility-first development · quality engineering

    DevTools

    Encoding, hashing, formatting, and image utilities for developers. Inputs stay in memory for the request only.

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