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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?
Based on our record, Impulse.dev seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | impulse.dev | 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 Impulse.dev 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.


No features have been listed yet.
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 Impulse.dev 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 Impulse.dev and Convertful.app. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I you use Tailwind and React, you might like Impulse[1] (disclaimer: I made it and use it almost daily) Not only does it provide means for visual editing (for Tailwind only), but it also saves all changes to your code. Free and open... - Source: Hacker News / over 3 years ago
Tracking Convertful.app since Apr 2026.
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