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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.

All Over Tools
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50+ free browser-based developer tools. No signup, no data collection.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | convertful.app | toolbox-dev.com |
| Pricing | — | |
| Company | Startup from the United States · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


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...
No description of Toolbox-Dev yet.
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
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 Convertful.app and Toolbox-Dev.
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 Convertful.app and Toolbox-Dev. For example, how are they different and which one is better?
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