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https://github.com/moimikey/awesome-devtools

🤖 A curated list of in-browser bookmarklets, tools, and resources for modern full-stack software engineers.
https://github.com/moimikey/awesome-devtools

List: awesome-devtools

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🤖 A curated list of in-browser bookmarklets, tools, and resources for modern full-stack software engineers.

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README 

        
# Awesome Developer Tools



> A curated list of in-browser [bookmarklets](#bookmarklets), [tools](#tools), and [resources](#resources) for modern full-stack software engineers.



Inspired by the [awesome](https://github.com/sindresorhus/awesome) list thing.



## Bookmarklets



- [artoo.js](https://medialab.github.io/artoo/) - Client-side scraping utility for the currently loaded uri.

- [DOM Monster](http://mir.aculo.us/dom-monster/) - A cross-platform, cross-browser bookmarklet that will analyze the DOM & other features of the page you're on.

- [Make Bookmarklets](https://make-bookmarklets.com) - Online tool to turn JavaScript into a bookmarklet.

- [Rulers Guides](http://mark-rolich.github.io/RulersGuides.js/) - A JavaScript library which enables Photoshop-like rulers and guides interface on a web page.

- [Viewport Resizer](http://lab.maltewassermann.com/viewport-resizer/) - A browser-based tool to test any website's responsiveness.



## Web-based Tools



### Debug JavaScript



- [Babel Time Travel](https://babel-time-travel.boopathi.in/) - Travel in time as babel transpiles.

- [DebugJS](http://debugjs.com/) - Debug your JavaScript in the browser (lol?)

- [endpoints.dev](https://www.endpoints.dev) - View realtime HTTP requests using a endpoints.dev generated URL.

- [httpbin](http://httpbin.org/) - HTTP Request & Response service.

- [JavaScript Visualizer 9000](https://www.jsv9000.app) - Loupe-inspired JavaScript execution visualizer

- [JSONBIN.io](https://jsonbin.io/quick-store) - Custom, mock JSON API

- [Loupe](http://latentflip.com/loupe/) - Similar in goal to SlowmoJS, a JavaScript call stack visualizer.

- [SlowmoJS](http://toolness.github.io/slowmo-js/) - Execute JavaScript in slow motion.



### Postman Alternatives

- [Hoppscotch](https://hoppscotch.io) - A lightweight, web-based API development suite.

- [RecipeUI](https://recipeui.com/editor) - Open source Postman alternative with type safety built in.

- [Reqbin](https://reqbin.com) - REST & SOAP API Online Testing Tool



### Diagramming & Scratch



- [asciiflow](https://asciiflow.com) - ASCIIFlow is a client-side only web based application for drawing ASCII diagrams.

- [dbdiagram](https://dbdiagram.io/d) - Draw Entity-Relationship Diagrams, Painlessly.

- [dot-to-ascii](https://dot-to-ascii.ggerganov.com) - Graphviz to ASCII converter using Graph::Easy.

- [Excalidraw](https://excalidraw.com) - Virtual whiteboard.

- [JSON-to-Chart](https://jsontochart.com) - Create beautiful charts from JSON data in your browser.

- [JSONCrack](https://jsoncrack.com/editor) - Visualize CSV/JSON/TOML/XML/YAML instantly into graphs.

- [Knotend](https://www.knotend.com) - A flowchart editor designed for speed through keyboard shortcuts and autolayout.

- [Markmap](https://markmap.js.org/repl) - Visualize markdown as a feature-rich mindmaps.

- [nomnoml](https://nomnoml.com) - A tool for drawing UML diagrams based on a simple syntax.

- [Sequence Diagram](https://sequencediagram.org) - An online tool / software for creating UML sequence diagrams.



### Diffing



- [Diff Text](https://difftext.com/) - Quickly highlight differences in plain text, code, or JSON files.

- [JSONDiffPatch](https://benjamine.github.io/jsondiffpatch) - Run a visual or non-visual diff on two JSON blobs.



### Document & Editors



- [README.so](https://readme.so/editor) - A simple editor to quickly add and customize all the sections you need for your project's readme.



### Generators



- [JSONGenerator](https://www.jsongenerator.io) - Create random JSON data

- [NGINXConfig](https://www.digitalocean.com/community/tools/nginx) - The easiest way to configure a performant, secure, and stable NGINX server.

- [Readme](https://nxt-readme.vercel.app) - All in one tool to quickly generate a readme for your project or github profile.



### Image



- [Clippy](https://bennettfeely.com/clippy) - CSS clip-path maker and editor.

- [Favic-o-matic](http://www.favicomatic.com/) - Literally generates every favicon neccessary + markup.

- [JPEG.rocks](https://jpeg.rocks) - Privacy-aware JPEG optimizer

- [PicPerf](https://www.picperf.dev/analyze) - Boost web performance with image optimization. Analyze and improve `` tags, `` tags, and inline CSS.

- [PNG-to-SVG](https://png-to-svg.com) - Free conversion from JPG or PNG images To vectorized SVG.

- [Squoosh](https://squoosh.app/) - Compress and optimize images in browser

- [SVG-to-backgroundImage](https://csspro.com/svg-to-background-image-css) - Convert your SVG files into CSS url (data URIs) by encoding it.

- [SVGOMG](https://jakearchibald.github.io/svgomg/) - Try [SVGO](https://github.com/svg/svgo) (SVG Optimizer) in the browser!



## Web-based Services



### Copy/Paste Scripts & Styles



- [crontab guru](https://crontab.guru/) - The quick and simple editor for cron schedule expressions by Cronitor

- [CSS Scan - Box Shadows](https://getcssscan.com/css-box-shadow-examples) - CSS, Ready to use, click to copy

- [CSS Scan - Buttons](https://getcssscan.com/css-buttons-examples) - CSS, Ready to use, click to copy

- [CSS Scan - Checkboxes](https://getcssscan.com/css-checkboxes-examples) - CSS, Ready to use, click to copy

- [CSS Scan - Shapes](https://getcssscan.com/css-shapes) - CSS, Ready to use, click to copy

- [Devtools Tips](https://devtoolstips.org) - Copy-and-paste'able collection of useful cross-browser DevTools snippets.

- [transition.css](https://www.transition.style) - Drop-in CSS transitions



### File Sharing



- [file.io](https://www.file.io) - Ephemeral file sharing. Convenient, anonymous and secure.

- [instant.io](https://instant.io) - Instant file transfer/sharing over WebTorrent

- [pairdrop](https://pairdrop.net) - Instant file transfer over your local network (P2P)



### Performance



- [Perflink](https://perf.link) - JS benchmarks



### Playgrounds



- [codepen](http://codepen.io/pen) - Social development environment for front-end designers and developers. Build and deploy a website, show off your work, build test cases to learn and debug, and find inspiration.

- [CodeSandbox](https://codesandbox.io/s/new) - Online code editor and sandbox

- [Ellie](https://ellie-app.com/) - The Elm Live Editor

- [ES.nextBin](http://esnextb.in/) - Like RequireBin but ES2015

- [ESM](https://code.esm.sh) - A fast, smart, & global CDN for modern(es2015+) web development.

- [JSBin](http://jsbin.com/) - JS/Coffee/Babel/Babel/Live/JSX/HTML/Markdown/Pug/CSS/Stylus/LESS/Sass

- [JSFiddle](http://jsfiddle.net/) - JS/ES3/Coffee/HTML/CSS/Sass

- [playcode.io](https://playcode.io/new) - JS/Typescript/Coffee/LiveScript/Babel/CSS/Sass/LESS/Stylus/HTML/Pug



### Regex



- [Debuggex](https://www.debuggex.com/) - PCRE/Python/JavaScript regex matching.

- [ExtendsClass](https://extendsclass.com/regex-tester.html) - PHP/Python/Ruby/JavaScript regex matching.

- [RegExplained](http://leaverou.github.io/regexplained/) - JavaScript regex matching.

- [Regexr](http://www.regexr.com/) - JavaScript regex matching.

- [Regulex](https://jex.im/regulex) - JavaScript Regular Expression Visualizer.



### Transformation



- [AST Explorer](http://astexplorer.net/) - Parse JS to an explorable AST tree via acorn, babel, babylon, espree, esprima, recast, shift, and typescript.

- [Babel REPL](https://babeljs.io/en/repl) - The compiler for next generation JavaScript

- [Compiler Explorer](https://godbolt.org) - Run compilers interactively from your web browser and interact with the assembly

- [fixmyjs](http://goatslacker.github.io/fixmyjs.com/) - Automatically fix your JS, driven by JSHint.

- [JavaScript Deobfuscator](https://deobfuscate.io) - A simple but powerful deobfuscator to remove common JavaScript obfuscation techniques.

- [JSNice](http://www.jsnice.org/) - Statistical renaming, type inference and deobfuscation.

- [JSON ABC](https://novicelab.org/jsonabc/) - Sorts JSON alphabetically

- [Markdown to HTML](https://markdowntohtml.com) - Paste or type your markdown and see it rendered as HTML. Download or copy the resulting HTML.

- [Markdown Tools](https://markdowntools.com) - Tools to convert Markdown to/from a number of formats. E.g. Html to Markdown, or a CSV to a Markdown table.

- [Sucrase](https://sucrase.io) - Super-fast Babel alternative

- [SWC](https://swc.rs/playground) - compile JS/TS files using modern JS features and outputs valid code that is supported by all major browsers.

- [Terser](https://try.terser.org/) - JavaScript parser, mangler and compressor toolkit for ES6+

- [Web2Img](https://etherdream.com/web2img) - A tool to bundle your web files into a single image, and extract them via Service Worker at runtime.

- [WebAssembly Explorer](https://mbebenita.github.io/WasmExplorer/) - translate C/C++ to WebAssembly, and then see the machine code generated by the browser.



### Presentation



- [Ray.so](https://ray.so) - Create beautiful images of code snippets.

- [snapify](https://snappify.com/editor) - Snappify enables you to create stunning presentations, with first-class support for code snippets.



## Resources



### APIs



- [FillText](http://filltext.com/) - Generate JSON datasets for testing or demonstration purposes

- [JSONPlaceholder](https://jsonplaceholder.typicode.com) - Free fake API for testing and prototyping.

- [Zippopotamus](http://zippopotam.us/) - Zipcode to Geo



### Browser Information



- [What's My Browser?](http://www.whatsmybrowser.org/)



### CDN



- [JSDelivr](https://www.jsdelivr.com) - A free CDN for open source projects.

- [Skypack](https://www.skypack.dev) - Load optimized npm packages with no install and no build tools.

- [unpkg](https://www.unpkg.com) - Fast, global content delivery network for everything on npm.



### Cheat Sheets



- [OWASP Cheat Sheet Series](https://cheatsheetseries.owasp.org) - A concise collection of high value information on specific application security topics.



### CSS Inliners



- [Campaign Monitor](https://www.campaignmonitor.com/resources/tools/css-inliner)

- [MailChimp](http://templates.mailchimp.com/resources/inline-css)



### Documentation



- [DevDocs](http://devdocs.io/) - Basically [Dash](https://kapeli.com/dash) but a web application and FREE.

- [ECMAScript Proposal Stages](https://www.proposals.es/stages)

- [ExplainShell](https://explainshell.com/explain?cmd=ls+-lisah) - A better way to read MAN pages.



### Easings & Animations



- [Ceaser](http://matthewlein.com/ceaser/)



### Glyphs & Icons



- [Copy/Paste Character](http://copypastecharacter.com) - Copy & Paste emojis and unicode symbols

- [CSS Icons](https://cssicon.space) - Copy & Paste icons in CSS + transition animations!

- [Entity Lookup](http://entity-lookup.leftlogic.com) - Enter any character(s) and find its corresponding HTML entity code.

- [heroicons](https://heroicons.com) - Beautiful hand-crafted SVG icons, by the makers of Tailwind CSS.

- [Icon Finder](https://www.iconfinder.com) - Millions of graphics for your design projects. Created by independent designers.

- [Icon Monstr](http://iconmonstr.com) - Discover 4000+ free icons in 300+ collections.

- [Icônes](https://icones.js.org/collection/all) - Over 150,000 open source vector icons.

- [Tabler Icons](https://tablericons.com) - 4000+ Open source free SVG icons. Highly customizable. No attribution required. For commercial use.



### Proxy as a Service



- [CORS Anywhere](https://cors-anywhere.herokuapp.com/) - Proxies any HTTP request through a CORS enabled environment.



### Responsiveness



- [Responsive Patterns](http://bradfrost.github.io/this-is-responsive/patterns.html)



### Validation & Parsers



- [numverify](https://numverify.com/) - Validate phone numbers from over 200 countries.

- [CSP Evaluator](https://csp-evaluator.withgoogle.com) - Evaluate CSP rules

- [Ada URL Parser](https://playground.ada-url.com/?url=torrent://blog/post/1?source|rest=rss) - WHATWG-compliant and fast URL parser written in modern C++, online.



## Security



### SSL



- [Self-Signed Certificate Generator](http://selfsignedcertificate.com/) - A self-signed certificate generator.

- [Mozilla SSL Configuration Generator](https://ssl-config.mozilla.org) - SSL configuration generator for various server software and platforms.



### Test



- [HSTS Preload](https://hstspreload.org) - Check HSTS preload status and elibility.

- [Mozilla Observatory](https://observatory.mozilla.org) - A set of tools to analyze your website and inform you if you are utilizing the many available methods to secure it.

- [Security Headers by Probely](https://securityheaders.com/?q=https%3A%2F%2Fsecurityheaders.com) - An easy to use tool designed to help you better deploy and understand modern security features that are available for your website.

- [Web Check](https://web-check.xyz) - All-in-one OSINT tool for analysing any website.



## Notable Mentions



- [ASCII Silhouettify](https://meatfighter.com/ascii-silhouettify/spa) - Convert images into ANSI-escaped color ASCII art.

- [Octopus](https://octopus.do) - Lightning-fast visual sitemap builder & website planner.

- [Type Fluidity](https://wearerequired.github.io/fluidity) - Fluid typography `clamp` value generator

- [TypeScriptToLua](https://typescripttolua.github.io) - TypeScript to Lua



## The Outside World



### Swag



- [DevSwag](http://devswag.com/)

- [DevSwag](http://devswag.com/)

- [StickerMule](https://www.stickermule.com/marketplace/collections/open-source-stickers/)



## License



[![CC0](http://i.creativecommons.org/p/zero/1.0/88x31.png)](http://creativecommons.org/publicdomain/zero/1.0/)