Advertise here via BSA Resumable.js is a JavaScript library providing multiple simultaneous, stable and resumable uploads via the HTML5 File API . The library is designed to introduce fault-tolerance into the upload of large files through HTTP

foxGuide is a firefox extension that displays horizontal and vertical guides. Guides will appear as thin lines that float over the webpage. You can move or remove them just the way you do it photoshop. Guides are useful for laying out elements symmetrically, structure a design and improving the overall layout.

When you make a grid of guides for a webpage, those guides will stay forever for that page.  Whether you close the tab or restart your browser, the guide [...]

JSONView is a Firefox extension that helps you view JSON documents in the browser.

Normally when encountering a JSON document (content type “application/json”), Firefox simply prompts you to download the file. With the JSONView extension, JSON documents are shown in the browser similar to how XML documents are shown. The document is formatted, highlighted, and arrays and objects can be collapsed. Even if the JSON document contains errors, JSONView will still show the raw text. More info in the inaugural blog [...]

PixelZoomer is a Firefox extension for web designers and developers which allows for zooming into websites. The core features are characterized by tools for pixel perfect measuring of distances and picking colors (HEX codes) with an eye dropper. The viewable area of a web page is being displayed in PixelZoomer through using a screenshot so that the view is based on real pixels.

The add-on ought to replace the step of using an image editing software when developing a web project. [...]