Toolsyy is 25 small utilities for the jobs that interrupt real work — merging a PDF, converting a spreadsheet export, checking a hash, decoding a token. No account, no upload, no trial that expires. Each one has a written guide explaining what it actually does, because a tool you do not understand is one you cannot trust with anything that matters.
The one rule: nothing leaves your browser
Every tool here runs entirely on your device. Your file is not uploaded, queued, scanned, or held on a server for an hour before deletion — because there is no server to hold it. The site is static files and JavaScript; the work happens in the tab you already have open.
That is a stronger promise than a privacy policy, because it is not a commitment about what we choose to do with your data. It is a statement that the data never arrives. A policy can change with a paragraph; this would take a rewrite of the whole site.
You do not have to take my word for it. Open your browser’s developer tools, switch to the Network tab, and use any tool on this site. Drop in a 50MB PDF and watch nothing leave. That check takes about thirty seconds and is worth doing on any site making this claim, including this one.
What that rules out
The constraint is real, and it means some things you might expect are deliberately missing. There is no OCR on scanned documents, no file storage or sync, no shareable links to results, no accounts, and no server-side conversion of the formats that genuinely need one. Each of those would require sending your file somewhere, which would make the sentence above false.
It also puts the limits on your device rather than on a pricing tier. There is no cap on file size or page count anywhere on this site, because there is no bandwidth bill to protect. What stops you is your own machine’s memory — which is a much higher ceiling than most free tiers, and it does not ask for your email first.
How the privacy page stays honest
Some tools remember what you typed so a reload does not lose your work. That is genuinely useful and also the kind of detail a privacy policy quietly gets wrong as a site changes.
So it is wired up rather than written down. Each tool declares what tier of storage it uses — persistent for ordinary drafts, cleared-on-close for secret-prone input like tokens and API keys, and nothing at all for files and generated passwords. The privacy page is generated from those declarations. The page cannot describe behaviour the code does not have, because it is reading the same source the tools are.
Who runs it
Toolsyy is built and maintained by Saunak Sen, working solo from India. One person writes the tools, the guides, and this sentence — which is worth knowing when you are deciding how much to trust a site you have just met.
Corrections are welcome and I would rather hear them than not. If a guide is wrong, a tool disagrees with a standard, or something behaves in a way the page does not describe, email privacy@toolsyy.dev. That is a role address on this domain, and it reaches me.
How it is paid for
Advertising, and nothing else. There is no paid tier, no upsell, and no feature held back for one. Your files are never sold or shared, which is not a promise so much as an impossibility — they are never received in the first place.
Analytics are limited to aggregate page views and loading-speed measurements, both cookieless and anonymised. That is why this site has never shown you a cookie consent banner: there is no cookie to consent to.
How it is built
SvelteKit, deployed as static pages, with the heavier libraries loaded only on the page that needs them so the rest of the site stays quick. The tools lean on browser primitives where they exist — the platform’s own cryptographic random source for passwords, its hashing for checksums — rather than reimplementing what has already been reviewed far more carefully than one person could manage.
The guides are written from the source code rather than around it, which is why they tend to cover the awkward parts: the reason an emoji counts as two characters, why a merged PDF loses its form fields, what a leading zero does to a spreadsheet export. Those are the details that decide whether a tool does what you needed, and they are usually the ones left out.
Start at the tool directory, or read the guides.