开发工具
与「开发工具」相关的在线工具合集，共 116 个，浏览器打开即用，无需下载安装。
JSON Formatter
Online JSON formatting, minifying, and validating tool, supports multiple languages.
Timestamp Converter
Online timestamp converter between Unix timestamps and date-time, supports seconds/milliseconds and shows the current timestamp in real time.
URL Encode/Decode
Online URL encode/decode tool supporting encodeURIComponent/decodeURIComponent, one-click conversion.
Character Counter
Online tool to count characters, Chinese characters, words, lines and bytes with real-time statistics.
Case Converter
Online case converter: ALL CAPS, all lowercase, capitalizing first letters, and title case.
Base64 Encode
Free online Base64 encoder supporting Chinese characters, converts text to Base64 right in your browser.
Text to Uppercase
Free online text-to-uppercase tool, converts lowercase to uppercase with one click, supports mixed Chinese and English.
Hex Encoding/Decoding
Free online hexadecimal encoder/decoder, converts between text and HEX quickly and accurately.
ASCII Code Conversion
Convert between characters and ASCII codes with one click, supports common and extended ASCII.
Binary to Decimal
Free online binary to decimal converter, supports large numbers for accurate results.
Decimal to Binary
Convert decimal to binary quickly, supports integers and decimals, free online tool.
Decimal to Hexadecimal
Convert decimal to hexadecimal, supports integers and decimals, free to use online.
JSON to XML
Convert JSON data to XML format, handles nested objects and arrays, free and fast for developers.
XML to JSON
Convert XML data to JSON format, supports attributes, nested elements and text content.
JSON Formatter
Free online JSON formatter, beautifies JSON with syntax highlighting and indentation.
JSON Minify
Free online JSON minifier, removes extra spaces and newlines to reduce size for faster transfer.
JSON Validator
Free online JSON validator, checks syntax and pinpoints errors for reliable data.
JSON to CSV
Free online JSON to CSV converter, flattens JSON arrays into tables for Excel and data analysis.
XML Formatter
Free online XML formatter, auto-indents and aligns for better readability.
CSS Minify
Free online CSS minifier, removes comments and extra spaces to shrink file size and speed up pages.
HTML Minify
Free online HTML minifier, removes redundant spaces and comments to speed up page loading.
SQL Format
Free online SQL formatter, auto-indents and beautifies queries, supports multiple database dialects.
YAML to JSON
Free online YAML to JSON converter, paste or upload YAML and convert with one click, preserving data structure.
Regex Tester
Online regex tester supporting JavaScript and PCRE syntax, highlights matches with replace and group capture.
UUID Generator
Free online UUID generator supporting v1/v4, batch generation and one-click copy for developers.
MD5 Encryption
Free online MD5 hash generator, converts text to 32-character MD5 with uppercase/lowercase output.
SHA1 Encryption
Free online SHA1 generator, creates 40-character SHA1 hashes for digital signatures and file checks.
SHA256 Encryption
Free online SHA256 generator, produces secure 64-character hashes for blockchain and data integrity.
Password Strength Check
Free online password strength checker, analyzes security in real time with scores and improvement tips.
HTTP Status Code Lookup
HTTP status code reference, quickly look up meanings, use cases and common causes for developers.
Regex Escaping
Automatically escapes special characters in regex to prevent matching errors and improve maintainability.
Camel Case to Snake Case Converter
Convert between camelCase and snake_case to unify code style and improve readability.
Variable Naming Converter
Convert variable names to camelCase, snake_case, kebab-case, Hungarian notation and more.
Text Sorter
Free online text sorter, sorts lines alphabetically or numerically in ascending or descending order.
Newline Converter
Free online newline converter, converts line endings between Windows, Unix and Mac formats.
Remove HTML Tags
Free online HTML tag remover, strips all tags and keeps plain text with batch support.
HTML to Text
Free online HTML to text converter, keeps line breaks and paragraphs for easy reading.
Underscore to CamelCase
Online snake_case to camelCase converter with batch processing to boost coding efficiency.
CamelCase to Underscore
Online camelCase to snake_case converter with batch support for consistent code style.
Random String Generation
Free online random string generator, customize length and character sets for passwords and test data.
Random Email Generator
Random email generator provides temporary addresses to protect your real inbox from spam.
String Length Calculator
Free online string length calculator, counts characters and bytes instantly, supports mixed languages.
Character Frequency Counter
Free online character frequency analyzer, counts occurrences per character with sorting.
Remove Blank Lines
Free online empty line remover, deletes blank lines in one click for compact text.
Add Line Numbers
Free online line number tool, custom start number and step for code and lists.
Text Concatenate
Join multiple lines into one with a custom connector, perfect for CSV or SQL generation.
Regex Replace
Find and replace text with regular expressions, supports multiline, global and advanced modes.
Date Addition and Subtraction
Add or subtract days, weeks, months or years from a date and get the result instantly.
Data Storage Unit Conversion
Free online data storage converter, converts between bit, byte, KB, MB, GB, TB with binary and decimal standards.
Fibonacci Sequence
Free online Fibonacci generator, produces the first N terms with support for large numbers.
Random Number Generator
Free online random number generator, customize min and max to generate one or more random integers.
Base64 Encoder/Decoder
Online Base64 encoder/decoder supporting text and files, fast and secure conversion.
HTML Entity Encoder/Decoder
Online HTML entity encoder/decoder, converts special characters to entities to prevent XSS.
Unicode Encoder/Decoder
Online Unicode encoder/decoder, converts characters to \u escape sequences or back to readable text.
SHA512 Encrypt
Free online SHA512 Encrypt. Runs entirely in your browser, no data uploaded, ready to use.
CRC32 Checksum
Free online CRC32 Checksum. Runs entirely in your browser, no data uploaded, ready to use.
HMAC Calculator
Free online HMAC Calculator. Runs entirely in your browser, no data uploaded, ready to use.
All-in-One Hash Calculator
Free online All-in-One Hash Calculator. Runs entirely in your browser, no data uploaded, ready to use.
File MD5 Checker
Free online File MD5 Checker. Runs entirely in your browser, no data uploaded, ready to use.
URL Parser
Free online URL Parser. Runs entirely in your browser, no data uploaded, ready to use.
Base64 Image Converter
Free online Base64 Image Converter. Runs entirely in your browser, no data uploaded, ready to use.
User-Agent Parser
Free online User-Agent Parser. Runs entirely in your browser, no data uploaded, ready to use.
IP Analyzer
Free online IP Analyzer. Runs entirely in your browser, no data uploaded, ready to use.
Color Converter
Free online Color Converter. Runs entirely in your browser, no data uploaded, ready to use.
Markdown Preview
Free online Markdown Preview. Runs entirely in your browser, no data uploaded, ready to use.
Code Statistics
Free online Code Statistics. Runs entirely in your browser, no data uploaded, ready to use.
Cron Expression Explainer
Free online Cron Expression Explainer. Runs entirely in your browser, no data uploaded, ready to use.
ASCII Table
Free online ASCII Table. Runs entirely in your browser, no data uploaded, ready to use.
Batch Timestamp Converter
Free online Batch Timestamp Converter. Runs entirely in your browser, no data uploaded, ready to use.
World Timezone Converter
Free online World Timezone Converter. Runs entirely in your browser, no data uploaded, ready to use.
Random Name Generator
Free online Random Name Generator. Runs entirely in your browser, no data uploaded, ready to use.
Random Phone Number Generator
Free online Random Phone Number Generator. Runs entirely in your browser, no data uploaded, ready to use.
Test ID Card Generator
Free online Test ID Card Generator. Runs entirely in your browser, no data uploaded, ready to use.
Caesar Cipher
Free online Caesar Cipher. Runs entirely in your browser, no data uploaded, ready to use.
Number to English
Free online Number to English. Runs entirely in your browser, no data uploaded, ready to use.
Text Diff
Free online Text Diff. Runs entirely in your browser, no data uploaded, ready to use.
Prime Number List Generator
Free online Prime Number List Generator. Runs entirely in your browser, no data uploaded, ready to use.
CSS Formatter
Free online CSS formatting tool to quickly beautify CSS code, with automatic indentation and line breaks, making CSS code clear and readable. Supports paste, format, and one-click copy.
JS Formatter
Free online JavaScript formatting tool, quickly beautify JS code with automatic indentation and line breaks, making code clear and readable. Supports paste, format, and one-click copy.
JS Minifier
Free online JavaScript minifier tool, quickly minify JS code, remove spaces and comments, reduce file size. Supports paste, minify, and one-click copy.
HTML Formatter
Free online HTML formatting tool, quickly beautify HTML code with automatic indentation and line breaks, making code structure clear. Supports paste, format, one-click copy.
SQL Compressor
Free online SQL minifier tool to remove extra spaces and comments, reduce SQL file size, suitable for database script optimization.
JSON Diff
Free online JSON diff tool to quickly find differences between two JSON data, supporting multiple views.
JSON to TypeScript Types
Free online JSON to TypeScript type tool, automatically generates TypeScript interface definitions from JSON, improving development efficiency.
JSON Flattener
Free online JSON flattening tool that converts nested JSON objects into a single-level structure for data analysis.
CSV to JSON
Free online CSV to JSON tool, supporting custom delimiters and quotes, easily convert CSV data to JSON format.
JSON to YAML
Quickly convert JSON data to YAML format, suitable for configuration files, data exchange and other scenarios, simple and easy to use.
JWT Parser
Free online JWT parser tool, quickly decode JWT Header, Payload, and Signature, helping debug authentication flows.
Base Converter
Supports conversion between binary, octal, decimal, and hexadecimal with detailed steps, ideal for learning and development.
Code Indentation Converter
Online code indent converter tool, easily change space indentation to tabs or vice versa, with customizable indentation width.
JS String Escape
Quickly escape special characters in JavaScript strings, supports encoding into a format safe to embed in code, and can also unescape.
XPath Tester
Online XPath testing tool, input XML and XPath expression, instantly display matching results, supports common functions and axes.
Code Comment Remover
Remove comments from code online, supports multiple languages and comment types, preserving code formatting.
Count Duplicate Lines
Free online duplicate line counter, quickly count the occurrences of each line in text, and output duplicate lines and their counts, useful for data cleaning.
Format Number with Thousands Separator
Free online number thousands separator formatting tool, add thousands commas to numbers, support integers and decimals, easy to read.
Remove All Whitespace
Free online tool to remove all whitespace characters. One-click remove all spaces, tabs, newlines, and other whitespace from text to make it compact.
Remove Line Breaks
Free online tool to remove line breaks from text, replacing them with spaces or deleting them to merge multiple lines into one.
Reverse Word Order
Free online tool to quickly reverse the order of words in a sentence, preserving punctuation, and supporting multi-line text.
Base32 Encode/Decode
Free online Base32 encoding and decoding tool, supports standard Base32 character set, quickly convert text.
Text-Binary Converter
Free online tool to convert text to binary strings or restore binary strings to text, supporting UTF-8.
Vigenère Cipher
Encrypt and decrypt text using the Vigenère cipher algorithm with custom keys, free to use online.
ROT13 Cipher Converter
Free online ROT13 tool, one-click ROT13 conversion of text, often used to hide text.
AES Encryption/Decryption
Free online AES encryption/decryption tool, supporting multiple modes (CBC, ECB, CFB, OFB) and padding methods, with customizable keys.
RSA Encryption/Decryption
Free online RSA encryption/decryption tool, supporting public key encryption, private key decryption, and key generation.
Hash Comparison Tool
Free online hash comparison tool, supports MD5, SHA1, SHA256, SHA512 and other algorithms, quickly verify text or file hashes.
Millisecond Timestamp Converter
Free millisecond timestamp converter, supports bidirectional conversion between millisecond timestamps and date-time, accurate to the millisecond. Enter a timestamp or date for instant conversion.
Date Week Number Calculator
Free online week number calculator. Enter a date to get its week number in the year (ISO 8601 standard), with support for custom start week.
Date Formatting Tool
Free online date formatting tool, supports multiple common formats, customizable format, input date or timestamp, instant formatted output.
Add Prefix/Suffix to Each Line
Free online tool to add custom prefix and suffix to each line of text, supports batch processing, suitable for code, lists, etc.
Email Extractor
Free online email extraction tool that quickly extracts all email addresses from any text, supporting batch processing.
Phone Number Extractor
Free online phone number extraction tool to quickly extract Chinese mainland mobile phone numbers from text, supporting multiple formats.
Full-width/Half-width Converter
Free online full-width half-width conversion tool, one-click convert full-width and half-width characters in text, supporting English, numbers, and punctuation.
URL Extractor
Online URL extractor tool, one-click extraction of all HTTP/HTTPS links from any text, supports batch processing, clearly listed, suitable for data cleaning and link collection.
AI Code Explainer
Free online AI code explainer. Paste code in any programming language, and AI will output a feature overview, step-by-step explanation of core logic, and key point tips. A great helper for learning and debugging.
AI SQL Generator
Free online AI SQL generator, describe query requirements in natural language, AI automatically generates executable MySQL statements with explanations, improving development efficiency.
AI Regex Generator
Free online AI regex generator. Describe matching requirements in natural language, AI generates accurate regex with explanations and matching examples.
