About Tooleras

A free online developer tools site at tooleras.com.

Tooleras is a collection of free online tools and editorial articles for developers, designers, and the people who keep websites and applications running. Our defining promise is simple: a reviewed tool states where its processing happens, what it sends, which standard or assumption it uses, and where its result stops being reliable.

Why the site exists

Most developer tool sites started as one useful page that worked, then accumulated trackers, popups, modal subscription prompts, paywalls, and aggressive interstitial ads until the page barely loaded the tool you came for. Some sites quietly send the data you paste into a JSON formatter or password generator to a server you've never heard of. That's an obvious problem when the data includes API keys, JWTs, internal config values, or customer information.

We built Tooleras because we wanted somewhere to do small developer tasks without that overhead. No accounts. No premium tier. No surprise data flow. The tool you came for, the standards documentation that explains it, and a clean page to do the work.

How the tools work

Tooleras runs on Next.js with a Supabase-managed PostgreSQL database for tool definitions, blog posts, tags, shortened-link destinations, and the contact form. Pages render server-side so browsers and search engines receive a useful document; the reviewed workbenches process their stated inputs locally using standard Web APIs:

  • Reviewed JSON and delimited-data workbenches parse or convert text locally and make their format limits visible
  • Reviewed UUID, cron, and diff tools show the exact inputs, output formats, and implementation boundaries relevant to the task
  • The reviewed salary estimator names its tax year, federal assumptions, and exclusions instead of presenting an estimate as a payroll quote
  • Every reviewed local workbench labels processing as In your browser and data sent as None; those labels are part of the product contract, not marketing shorthand

A small number of routes genuinely need network access. IP, DNS, SSL, HTTP-header, and broken-link tools may query public or Tooleras services for the host or address you enter; the URL shortener stores its destination so the redirect keeps working. Those routes carry a specific processing and data-sent disclosure. Routes still undergoing capability review are not presented as reviewed workbenches or included in the indexable catalogue.

What the site is not

Tooleras is not a SaaS product. There is nothing to subscribe to. There is no gated content. There is no "premium" tier of the JSON formatter that strips fewer characters than the free one. We're not collecting your data to train models, sell to advertisers, or build a behavioral profile.

Tooleras is also not a substitute for professional advice. Calculators are estimates based on the inputs you provide. Security tools are reference utilities. Legal-document generators produce general templates. Read the Disclaimer if you're using a tool for anything that matters.

How the site is funded

Tooleras displays advertising provided by Google AdSense. That's how we cover hosting, domain, and the time spent maintaining and adding tools. Ads are clearly distinguishable from editorial content. We don't accept payment to recommend tools, alter calculator outputs, or change article conclusions. The full advertising disclosure is in our Privacy Policy.

Editorial articles

Beyond the tools themselves, the blog publishes long-form guides about authentication, identifiers, password security, regular expressions, text encoding, accessibility, and practical finance planning. They are written for people who need enough context to make a good decision—not just a snippet to paste.

Before a guide joins the reviewed library, we check its claims against primary sources such as IETF RFCs, NIST publications, W3C specifications, or official documentation. Where a tool or source cannot support a claim, we correct it, qualify it, or leave it out. We'd rather under-claim and earn trust than over-claim and lose it.

Privacy and data

For a complete picture of what is and isn't collected, see the Privacy Policy. The short version: standard server access logs from our hosting provider; consent-only analytics and advertising; contact form submissions; and destinations intentionally submitted to the URL shortener. Local-tool inputs, file contents, and tokens are not uploaded; network-tool exceptions are disclosed on their pages.

Get in touch

If you found a bug, want to suggest a tool, spotted an article that needs a correction, or have a question about how something works, send us a note through the contact form. Real humans read it.

Site policies