This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
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CoolPDF
Free PDF tools that never upload your files
Merge, split, compress, sign and convert PDFs right in your browser. Your files never leave your device — every tool runs 100% client-side with WebAssembly. No uploads, no sign-up, no servers, free forever. Open source (AGPL-3.0).
Hi PH.
I built CoolPDF after watching a colleague upload our company's draft contract to an online merger. Two pages needed, the whole contract uploaded.
The idea is simple: every online PDF tool asks you to upload your file first. CoolPDF does the opposite — it brings the processing to your file. All 20 tools (merge, split, compress, sign, HEIC → PDF, PDF → Markdown and more) run 100% in your browser via WebAssembly. There is no backend at all.
And you don't have to take our word for it: load a page, switch off your Wi-Fi, and every tool still works. Or open DevTools → Network and watch zero file bytes go out. The whole codebase is open source (AGPL-3.0): https://github.com/Jimsnote/coolpdf
Would love your feedback — and tell us which tool we should build next!
About CoolPDF on Product Hunt
“Free PDF tools that never upload your files”
CoolPDF was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #41 on the daily leaderboard. Merge, split, compress, sign and convert PDFs right in your browser. Your files never leave your device — every tool runs 100% client-side with WebAssembly. No uploads, no sign-up, no servers, free forever. Open source (AGPL-3.0).
On the analytics side, CoolPDF competes within Productivity, Open Source, Privacy and GitHub — topics that collectively have 779.5k followers on Product Hunt. The dashboard above tracks how CoolPDF performed against the three products that launched closest to it on the same day.
Who hunted CoolPDF?
CoolPDF was hunted by Zhang Jim. 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.
For a complete overview of CoolPDF including community comment highlights and product details, visit the product overview.
Zhang Jim