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Everyday utilities for the everyday developer

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56 free browser-based tools for images, PDFs, videos, and more. No upload, no signup, no limits — your files never leave your device.
Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | dev-box.app | convertful.app |
| Pricing | — | |
| Company | — | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of DevBox yet.
Convertful is a free online file converter with 56+ tools for images, PDFs, videos, and developer utilities. Unlike iLovePDF, Smallpdf, or CloudConvert, everything on Convertful runs entirely in your browser — no files are ever uploaded to a server. Why Convertful? 100% Private — Your files never...
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.


No analysis of DevBox yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing DevBox and Convertful.app.
Convertful.app's answer:
Everything runs entirely in the user's browser. Unlike every major competitor (iLovePDF, Smallpdf, CloudConvert), files are never uploaded to a server. This means instant processing, complete privacy, and zero file size restrictions — all powered by WebAssembly and browser APIs.
Convertful.app's answer:
Competitors upload your files to their servers, charge $7-21/month for full access, and impose daily limits on free tiers. Convertful processes everything client-side, so it's faster, more private, and completely free. No account required to start using tools.
Convertful.app's answer:
Anyone who needs to convert, compress, or edit files quickly — freelancers, designers, developers, students, small business owners, and content creators who value privacy and don't want to pay for basic file operations.
Convertful.app's answer:
We got tired of paying monthly subscriptions just to compress a PDF or convert an image. Every competitor uploads your files to their servers, which is slow, expensive to run, and a privacy concern. We realized modern browsers are powerful enough to handle all of this locally — so we built Convertful to prove that file conversion can be free, instant, and private.
Convertful.app's answer:
Next.js, React, TypeScript, WebAssembly (FFmpeg for video, Tesseract.js for OCR), Canvas API, Web Crypto API, pdf-lib, Tailwind CSS. Hosted on AWS.
Share your experience with using DevBox and Convertful.app. For example, how are they different and which one is better?
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