Essential Online Tools Every Developer Should Know

Search Engines and Resource Sites

Bing (International) : https://cn.bing.com/

DuckDuckGo : https://duckduckgo.com/

Stack Overflow : https://stackoverflow.com/

Gitlogs : https://www.gitlogs.com/

Jiumo Search (Jiumodiary) : https://www.jiumodiary.com/

Ebooke : https://ebookee.org/

Iconfinder : https://www.iconfinder.com/

TinEye : https://www.tineye.com/

Semantic Scholar : https://www.semanticscholar.org/

LibreStock : https://librestock.com/

CC Search : https://ccsearch.creativecommons.org/

Pexels : https://www.pexels.com/

Unsplash : https://unsplash.com/

The App Store : https://theappstore.org/

Tool Categories

Image‑Related Tools

TinyPNG : https://tinypng.com/ – lossless image compression.

Picdiet : https://www.picdiet.com/zh-cn – JavaScript‑based compression achieving ~80% size reduction.

SmartResize : https://www.smartresize.com/zh-cn – batch cropping and scaling built with JavaScript/HTML5.

Regex Visualization Tools

https://regexr.com/ – interactive regex editor.

https://jex.im/regulex/ – graphical regex visualizer.

File Conversion Tools

https://smallpdf.com/cn – PDF, image, Word conversions.

https://convertio.co/zh/ – multi‑format conversion.

https://www.online-convert.com/ – online file conversion.

https://www.pdftoword.com/ – PDF to Word.

https://tools.pdf24.org/zh/ – PDF utilities.

https://cn.office-converter.com/ – Office document conversion.

Online Compilers

https://rextester.com/ – multi‑language code runner.

https://www.onlinegdb.com/ – online IDE and debugger.

https://c.runoob.com/ – online C/Java/PHP execution.

HTML/CSS/JS/Design Tools

JSFiddle: https://jsfiddle.net/ – front‑end playground.

CodePen: https://codepen.io/ – front‑end snippets.

Runoob tutorials: https://c.runoob.com/front-end/61

JSON parser: https://c.runoob.com/front-end/53

Online PS: http://www.kantu.com/ – browser‑based Photoshop alternative.

TableConvert: https://tableconvert.com/ – convert between Markdown, HTML tables, CSV, Excel.

DesignCap: https://www.designcap.com/ – online poster design with templates.

Mind‑Mapping Tools

Xmind: https://www.xmind.cn/ – cross‑platform mind‑map software.

ProcessOn: https://www.processon.com/ – free online diagramming and collaboration.

MindMaster: https://www.edrawsoft.cn/mindmaster/ – multi‑platform mind‑map tool.

MindMeister: https://www.mindmeister.com/zh – online mind‑mapping with large user base.

百度脑图: http://naotu.baidu.com/ – simple online mind‑map.

Gliffy: https://www.gliffy.com/ – diagramming tool (Chrome extension available).

Document & Note Platforms

印象笔记 (Evernote China): https://www.yinxiang.com/

有道笔记: https://note.youdao.com/

OneNote: https://www.onenote.com/

幕布: https://mubu.com/

为知笔记: https://www.wiz.cn/

石墨文档: https://shimo.im/

Google Keep: https://keep.google.com/

Simplenote: https://simplenote.com/

Code example

Mybatis 进阶