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Toolars
Free online tools that never upload your files
Most "free online tool" sites upload your files to a server and cover the page in ads. Toolars runs 100 tools (PDF, JSON, image, hash, text) entirely in your browser with WebAssembly — nothing you paste or drop leaves your device. We verified it: canary-string network audits found zero outbound requests, and measured limits for every tool are published at /benchmarks. No sign-up, no ads, works offline, 13 languages, plus a Chrome extension side panel. Free forever.
I built Toolars because I got tired of a specific kind of website: the "free online PDF tool" that makes you upload a sensitive file to a server you've never heard of, then covers the result page in ads.
So I made the opposite: 100 tools where your input never leaves your browser. Not as a policy promise — as architecture. Tools run on WebAssembly and Web Workers, and to prove it we ran canary-string network audits: inject a unique string, run the tool, check that it appears in zero network requests. Nine tools audited so far, zero leaks, results published at /benchmarks along with each tool's measured input limits.
Also: no sign-up, no ads, works offline once loaded, 13 languages, and a Chrome extension that puts the toolkit in a side panel next to whatever you're working on.
Genuinely curious where this model breaks for you — if a tool you need is missing, there's a request-tool page and I read every submission.
About Toolars on Product Hunt
“Free online tools that never upload your files”
Toolars was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #112 on the daily leaderboard. Most "free online tool" sites upload your files to a server and cover the page in ads. Toolars runs 100 tools (PDF, JSON, image, hash, text) entirely in your browser with WebAssembly — nothing you paste or drop leaves your device. We verified it: canary-string network audits found zero outbound requests, and measured limits for every tool are published at /benchmarks. No sign-up, no ads, works offline, 13 languages, plus a Chrome extension side panel. Free forever.
On the analytics side, Toolars competes within Chrome Extensions, Productivity and Developer Tools — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how Toolars performed against the three products that launched closest to it on the same day.
Who hunted Toolars?
Toolars was hunted by Aixtral Labs. 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 Toolars including community comment highlights and product details, visit the product overview.
Aixtral Labs