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Found 68 tools
Developer32
JSON Formatter
Format, validate, minify, sort keys and inspect JSON outline locally.
Base64 Encoder / Decoder
Encode/decode Unicode text, URL-safe Base64, and small files in the browser.
URL Encoder / Decoder
Encode/decode URL components or full URLs and inspect query parameters.
UUID Generator
Generate UUID v1, v3, v4, v5, v6 and v7 with namespace, batch output, uppercase and hyphen options.
SHA Hash Generator
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes for text or small files.
Base Converter
Convert numbers across bases and transform text into hex, binary, Base64 and Unicode bytes.
IP / CIDR Calculator
Calculate network address, subnet mask, host range and wildcard mask for IPv4 CIDR blocks.
HTTP Status Code Lookup
Search and filter common HTTP status codes with bilingual explanations, categories and troubleshooting hints.
Protobuf Encoder / Decoder
Encode JSON into Protobuf bytes or decode hex / Base64 Protobuf payloads with a .proto schema in the browser.
JWT Decoder
Decode JWT header and payload locally, inspect claims, expiry times and raw Base64URL segments.
JWT Encoder
Generate HS256, HS384 or HS512 JSON Web Tokens directly in the browser for testing and local workflows.
Color Converter
Convert HEX, RGB, HSL and HSV colors, inspect alpha values, pick colors visually and preview palettes instantly.
ASCII Table
Look up printable ASCII codes, control names and character conversions between decimal, hex and binary.
XML Formatter
Format and validate XML locally with a clean pretty-printed output.
YAML Formatter
Format and validate YAML locally with stable indentation and clean output.
TOML Formatter
Format and validate TOML locally for config files and structured settings.
Docker Run to Compose
Convert common docker run commands into a starter docker-compose service block.
Random User-Agent Generator
Generate common desktop and mobile User-Agent strings for testing requests and client detection logic.
JSON ⇄ CSV Converter
Convert JSON arrays and CSV tables both ways in the browser, with headers, delimiter choice and quick validation.
AES / DES Encryption Tool
Encrypt or decrypt short text with AES, DES or 3DES in the browser, with selectable block mode, padding, IV and output format.
Hex Editor
Inspect text or files as hex bytes, edit hexadecimal content, and decode it back to text locally in the browser.
RSA Key Tool
Generate browser-side RSA key pairs and use them for short text encryption, decryption, signing and verification.
Regex Tester
Test JavaScript regular expressions, inspect matches, groups and replacements, and iterate with live sample text in the browser.
JSONPath Evaluator
Evaluate JSONPath expressions against JSON data, inspect matched paths and preview results with GitHub-style highlighted JSON output.
Crontab Expression Tool
Explain cron expressions, generate friendly schedules, and preview upcoming run times directly in the browser.
JSON / YAML / TOML / XML Converter
Convert structured data between JSON, YAML, TOML and XML, validate input, and preview the output with GitHub-style code highlighting.
Text Encoding Converter
Convert text bytes between UTF-8, UTF-16, Shift-JIS, EUC-JP and other browser-safe encodings, then inspect normalized text and hex bytes.
HTTP Response Header Reference
Browse common HTTP response headers, understand caching, security and delivery-related fields.
HTTP Request Header Reference
Look up common HTTP request headers and quickly review client, auth and caching related fields.
JSON Minify
Minify JSON instantly in the browser and remove unnecessary whitespace before shipping data elsewhere.
URL Parser
Break a URL into protocol, host, path, query and hash fields, then inspect every parameter clearly.
Query String Builder
Build clean query strings from key-value pairs and preview the final URL segment instantly.
Utility20
Timestamp Converter
Convert Unix timestamps, batch date strings, ISO, local time and generate timestamps from date input.
Password Generator
Generate strong random passwords with length, character sets, memorable mode and ambiguity filters.
Random Number Generator
Generate random integers or decimals with range, quantity, uniqueness and sorting options.
TOTP Generator
Generate current TOTP codes from a secret or otpauth URI with configurable digits, period and algorithm.
File Type Detector
Inspect a file in the browser and identify common formats from extension, MIME type and magic bytes.
Image Compressor & Converter
Compress images in the browser, convert to WebP / AVIF / JPEG / PNG, resize dimensions and compare file size savings instantly.
Timezone Converter
Convert one date and time across major time zones, compare offsets, and keep a live current-time board in the browser.
Image Watermark Tool
Add text watermarks to images in the browser, preview placement instantly, and export the final watermarked file without any backend.
Image to Base64 Converter
Convert images into Base64 data URLs locally, inspect size impact, and copy browser-ready output for HTML, CSS or API payloads.
Image EXIF / GPS Viewer
Read common image metadata such as EXIF time, camera tags and GPS coordinates directly in the browser.
MIME Type Reference
Look up common MIME types, file extensions and browser-facing content-type values in one fast table.
Keyboard Tester
Check keyboard input in the browser, see which keys fire correctly, and monitor repeat, code and modifier states live.
QR Code Generator / Decoder
Generate QR codes from text and decode uploaded QR images in one browser tool.
Phone / Area Code Lookup
Look up common international calling codes and quickly map phone prefixes to countries or regions.
Emoji Browser
Browse useful emoji groups, search by keyword, and copy symbols for social posts, notes and UI content.
Image Resize & Crop
Crop images to a chosen frame, resize dimensions, and export a clean result directly in the browser.
Image Rotate & Flip
Rotate, flip and re-export images directly in the browser with a clean visual preview.
Image Format Converter
Convert one image between PNG, JPEG and WebP directly in the browser with a clean visual preview.
Batch Image Converter
Convert multiple images to PNG, JPEG or WebP in one go, then download everything as a ZIP file.
Barcode Generator / Decoder
Generate common 1D barcodes from text and decode uploaded barcode images in one browser tool.
PDF7
PDF Merger
Merge multiple PDF files locally, reorder them, remove files, and export one combined PDF without uploading anything.
Image to PDF Converter
Turn JPG, PNG, WebP and other browser-readable images into a multi-page PDF locally, reorder pages, and export one clean document.
Word / HTML / Markdown Converter
Read a DOCX file in the browser, turn it into HTML or Markdown, and export simple HTML content back into a clean DOCX file.
PDF Splitter
Split selected pages from a PDF directly in the browser and export a smaller document instantly.
PDF Compressor
Rebuild each PDF page as a lighter image document, then export a smaller PDF directly in your browser.
PDF Watermark
Add repeated text watermarks across every page of a PDF directly in the browser.
PDF Protect
Add a password to a PDF directly in the browser and export a protected copy instantly.
Text7
Word Counter
Advanced bilingual word, character, keyword and reading-time analyzer.
Case Converter
Convert text to upper, lower, title, sentence, camel, Pascal, snake, kebab and more.
Text Cleaner
Trim, dedupe, sort, remove blanks, punctuation or numbers, and batch prefix/suffix lines.
Text Diff Checker
Compare two text blocks line by line and highlight added, removed and changed content.
ASCII Art Generator
Turn short text into classic ASCII art with multiple FIGlet fonts, directly in the browser.
Markdown / HTML Converter
Convert Markdown and HTML both ways, preview the result, then continue into PDF or Word export in the same browser workflow.
Slug Generator
Turn titles or phrases into clean URL-friendly slugs with case, separator and trim options.