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FastFileTool
Edit, convert & compress files 100% locally. Zero uploads.
FastFileTool is a privacy-first web utility suite that converts, compresses, and edits PDFs, videos, images, and audio entirely inside your browser. Powered by WebAssembly and client-side scripts, your sensitive data never leaves your computer. No network wait times, no storage server file intercepting, and a radically reduced carbon footprint. Work offline, securely, and with zero file-size limits.
Hey Product Hunt!
I’m Illies, the maker behind FastFileTool.fr. Like many of you, I grew tired of uploading sensitive PDFs, personal photos, or heavy videos to sketchy cloud converters just to change a format or reduce a few kilobytes. Waiting for uploads to finish and knowing my files sat on someone else’s server felt deeply broken. So, I built FastFileTool. It handles over 100 dedicated web tools running 100% locally inside your browser sandbox using modern client-side tech and WebAssembly (like local FFmpeg execution). Why use it?
Total Privacy: Your data never touches an external server.
Instant Execution: No network lag or upload wait times.
Eco-Friendly: Uses local compute instead of global cloud farms.
Works Offline: Once the page loads, cut your internet and keep building. FastFileTool is entirely free, without any watermarks or registration walls. I’ll be online all day today to answer questions, debug, and hear your feature requests. To kick things off: Which file tool do you find yourself needing most often in your current workflow? Thanks for the support!
How does the WebAssembly side actually handle large video compression without choking on RAM on older laptops?
Curious how you handle really large video files in-browser without choking on memory, is there a chunking trick under the hood or do you just lean on each browser's available RAM?
Finally something that handles big video files without uploading them anywhere, compressed a 4K clip in under a minute right in my browser. The offline-first approach is a nice change from all these tools that farm out your files to random servers.
love that everything stays local, huge plus for handling sensitive docs. one thing that would make it even better for me is a batch watermark tool for pdfs, like letting me drop a folder, pick a text or image stamp, position and opacity, then export the whole set in one go. right now i have to watermark files one at a time and it kills the workflow when im prepping a stack of contracts.
How does it actually handle the really compute-heavy stuff like compressing a long video without melting my laptop, is there a size cap that kicks in even though it says zero file-size limits?
About FastFileTool on Product Hunt
“Edit, convert & compress files 100% locally. Zero uploads.”
FastFileTool was submitted on Product Hunt and earned 6 upvotes and 11 comments, placing #124 on the daily leaderboard. FastFileTool is a privacy-first web utility suite that converts, compresses, and edits PDFs, videos, images, and audio entirely inside your browser. Powered by WebAssembly and client-side scripts, your sensitive data never leaves your computer. No network wait times, no storage server file intercepting, and a radically reduced carbon footprint. Work offline, securely, and with zero file-size limits.
FastFileTool was featured in Productivity (656.2k followers), Privacy (11.2k followers) and Developer Tools (515.9k followers) on Product Hunt. Together, these topics include over 230.3k products, making this a competitive space to launch in.
Who hunted FastFileTool?
FastFileTool was hunted by Illiès Aknazzay. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Illiès Aknazzay