Boost Your Coding Efficiency: 30+ Must-Have Online Tools for Developers
This guide explains why laziness is a programmer's virtue and presents a curated collection of searchable, generation, conversion, checking, reference, and online execution tools—plus a handy Chrome extension—to help developers write cleaner code, save time, and improve productivity.
Excellent programmers have three virtues: laziness, impatience, and arrogance. Laziness, as described by Larry Wall, means achieving goals with minimal effort, writing maintainable, readable code, documenting well, and leveraging tools to boost efficiency.
Search Tools
SearchCode – source‑code search engine covering GitHub, Bitbucket, Google Code, CodePlex, SourceForge, Fedora.
mvnrepository – Maven artifact lookup.
Iconfont – Chinese vector‑icon library with download, storage, format conversion.
BinaryDoc for OpenJDK – generate documentation directly from OpenJDK binaries.
Unsplash – free stock‑photo repository.
Jiumodiary – powerful ebook search engine, no registration required.
MySlide – PPT sharing platform.
IT大咖说 – IT expert knowledge sharing and live‑stream platform.
Generation Tools
BeJSON – convert JSON to Java POJOs.
Online Cron generator – graphical UI for creating cron expressions.
Regex generator – assist building regular expressions.
ASCII art generator – turn text into ASCII art.
Conversion Tools
站长工具编码转换 – Unicode, UTF‑8, URL encode/decode, ASCII, ISO‑8859‑1, GB2312, GBK, UTF‑16, etc.
Timestamp conversion – convert Unix timestamps.
Timebie – world‑time conversion between cities.
Online encryption/decryption – quickly test cryptographic algorithms.
ConvertWorld – comprehensive unit conversion (time, currency, etc.).
Convertio – online video/audio format conversion (FLV, MOV, AVI, etc.).
Docsmall – batch image compression (up to 30 images, 25 MB each).
Checking Tools
JSON Formatter – validate, format, compress JSON.
Regex validator – test regular expressions.
Diffchecker – compare code differences online.
Reference Tools
ASCII table, HTTP status codes, Content‑type list, common TCP/UDP ports, HTML entity reference, RGB color reference, web‑font reference – all hosted on OSChina tool pages.
Online Code Execution
CodeRunner – run PHP, C, C++, Go, Python, Java, Groovy directly in the browser.
Useful Browser Extension
FeHelper – a Chrome extension that bundles many of the above utilities (JSON formatting, timestamp conversion, Markdown editing, encoding/decoding, encryption/decryption, regex testing, etc.) for quick access.
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Su San Talks Tech
Su San, former staff at several leading tech companies, is a top creator on Juejin and a premium creator on CSDN, and runs the free coding practice site www.susan.net.cn.
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