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Hakotools
25+ free browser tools — no install, no upload, all local
Hakotools is a collection of 25+ free web tools that run entirely in your browser. No installation, no sign-up, no data uploaded to any server. Tools include image compression, PDF merge/split, salary calculator, investment simulator, roulette, and more. All processing happens on your device — your files never leave your browser. Built with Astro + React, hosted on Cloudflare Pages.
Hi Product Hunt! I built Hakotools as a solo project — a collection of 25+ browser-based tools that process everything locally on your device.
Why local-only? I wanted tools I could trust with sensitive files (tax documents, personal photos) without worrying about uploads.
The site is in Japanese for now, but most tools (image compress, PDF merge, roulette) work regardless of language.
Tech: Astro + React islands, Cloudflare Pages (zero server cost), all processing via Canvas/Web APIs.
Would love your feedback!
love the privacy-first approach and the variety here, honestly kind of rare to see this many tools without an account. one thing that would be awesome is letting users pin their favorite tools to the top so you dont have to scroll through all 25 every time, like a quick-access bar at the top. would make it way more practical for daily use
The browser-only approach is genuinely useful for sensitive files like payslips or PDFs. Tried the image compressor on a few photos and it handled them without any upload wait, which feels refreshingly fast.
Love the no-server approach, super refreshing. One thing that would make it stick for me is adding a way to chain multiple tools together, like compress image then convert to PDF then merge, without re-downloading files in between. A simple drag-to-connect workflow would turn this from a handy toolkit into something I keep open all day.
The fact that everything runs locally without uploading files is genuinely useful for the image compression and PDF tools. Tried the salary calculator too and it loaded instantly. Solid collection.
Love that everything runs locally, tried the image compressor and it cut my file size in half without re-uploading anything. Super handy for quick tasks without the privacy worry.
Love that everything runs locally, the salary calculator and image compressor are going into my bookmarks for sure. One thing that would make this even better is letting users pin their favorite tools to a sidebar so they don't have to scroll through all 25 every time they open the site.
The PDF merge tool worked instantly without me uploading anything, which is exactly the kind of privacy-friendly design I want from these utilities. Nice to see so many useful tools in one place without any sign-up friction.
Tried the image compressor and the salary calculator, both worked instantly without any sign-up or upload delays. Really appreciate that everything just runs locally, especially the file tools.
Love that everything runs locally without uploading anything, the privacy angle is a big deal for me. Tried the image compressor and it actually handled a batch pretty fast right in the browser, no waiting around.
Love that everything runs locally in the browser, no accounts or uploads needed. Tried the PDF merge tool and it handled a few large files instantly on my laptop.
About Hakotools on Product Hunt
“25+ free browser tools — no install, no upload, all local”
Hakotools was submitted on Product Hunt and earned 16 upvotes and 11 comments, placing #101 on the daily leaderboard. Hakotools is a collection of 25+ free web tools that run entirely in your browser. No installation, no sign-up, no data uploaded to any server. Tools include image compression, PDF merge/split, salary calculator, investment simulator, roulette, and more. All processing happens on your device — your files never leave your browser. Built with Astro + React, hosted on Cloudflare Pages.
Hakotools was featured in Web App (123k followers) and Productivity (656.7k followers) on Product Hunt. Together, these topics include over 184.2k products, making this a competitive space to launch in.
Who hunted Hakotools?
Hakotools was hunted by Mnti. 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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Mnti