
CodePen
replit
JSFiddle
StackBlitz
GitHub
VS Code
JS Bin
Online playground for React

Gumlet
HTML Hoster
imageupload.app
FireImg
Uplink
imgix
Downlink
The best way to host files & images. Upload supports: file uploads, file storage, image processing, and image optimization through a worldwide image CDN.

Which is more popular?
Based on our record, CodeSandbox seems to be a lot more popular than Upload. While we know about 313 links to CodeSandbox, we've tracked only 4 mentions of Upload.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | codesandbox.io | upload.io |
| Pricing | ||
| Company | Startup from The Netherlands · 1 - 9 employees · 2017 | — |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of Upload yet.
Walkthroughs and reviews on video.
A browser IDE that's actually GOOD? (CodeSandbox.io Review!)
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Upload Amazon Prime Series Review
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using CodeSandbox and Upload. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Codesandbox is an online code editor and prototyping tool that makes creating and sharing web apps faster. Codesandbox: Online code editor and ide for rapid web development.
CodeSandbox can be thought of as a much more powerful and complete take on JSFiddle. True to its name, CodeSandbox provides a complete code editor experience and a sandboxed environment for front-end development.
We have no reviews of Upload yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


To begin, you can start creating your own react app using the command line or can directly go to CodeSandbox if you want to skip using the command line which is faster. CodeSandbox is an online code editor and prototype tool that speeds... - Source: dev.to / 5 months ago
To begin, you can create a react app using the command line or any code editor (e.g., VSCode). You can also try using CodeSandbox as an online code editor that is simple to use and allows you to deploy your code. - Source: dev.to / 5 months ago
If you are in a rush to open unknown repos, use GitHub Codespaces or codesandbox with Copilot or another AI integration to analyze the repo for malicious intent and to run it in a safe environment. - Source: dev.to / 11 months ago
I have a website where visitors store and view their images. Storage is not the main part, it's just part of business. Any alternative for upload.io? They have amazing API and react components. Source: over 3 years ago
The ML Model is hosted on Replicate and Upload is used for image storage. During my 30 days of OpenAI series, I have focused on OpenAI, but in this example, the developer uses Replicate. - Source: dev.to / over 3 years ago
I couldnt ever get upload.io to work. Im seeing if dropbox will work. So far it's being very weird. Source: about 4 years ago
When comparing CodeSandbox and Upload, you can also consider the following products.


Gumlet is an end-to-end AI-powered video streaming and image delivery platform.
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Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.
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Upload HTML files or folders and get instant hosted URLs. HTML Hoster keeps nested assets intact for demos, landing pages, and static site previews.
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Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.
Compare JSFiddle to CodeSandbox or Upload:
Upload and share your images effortlessly with imageupload.app. Fast, secure, and free!
Compare imageupload.app to CodeSandbox or Upload: