A few weeks ago I shared Toollium here — 45 free browser-based tools with no sign-up, no watermarks, and nothing uploaded to a server.
The response pushed me to keep going. Toollium is now at 70 tools, and I want to walk through what's new and why I built it this way.
The philosophy hasn't changed
Same three rules as before:
No sign-up, ever
No watermarks on anything you export
Files never leave your browser — conversion, compression, and editing all happen client-side
The only thing that's changed is scope.
What's new since the last 45
Developer tools — this category didn't exist before. Now there's a regex tester, JSON formatter, UUID generator, JWT decoder, Base64 encode/decode, URL encoder, hash generator, CSS minifier, a CSS gradient builder, an SVG viewer, and a subnet calculator. These came directly from things I kept opening random sites for myself.
Finance calculators — mortgage payments, debt payoff (snowball vs. avalanche), auto loans, life insurance coverage, compound interest, rent vs. buy, salary-to-hourly conversion, and sales tax by state. All calculation-only, nothing sold, no lead-gen forms.
Health calculators — a BMI calculator and a calorie (TDEE) calculator, both written with honest caveats instead of pretending a formula can replace a doctor.
More PDF converters — Excel to PDF, GIF to PDF, BMP to PDF, HEIC to PDF (for iPhone photos), ZIP to PDF (bulk images into one file), watermarking, page deletion, and page numbering.
More image tools — an image format converter, SVG to PNG, a signature maker, and a crop tool, on top of the compressor, resizer, and AI background remover from before.
New AI writing tools — an AI cover letter generator and an AI email writer, alongside the paraphraser, grammar checker, and summarizer.
Business utilities — an invoice generator, age calculator, EMI/loan calculator, unit converter, percentage calculator, date duration calculator, and a time zone converter.
Why keep adding instead of polishing 45
Two reasons.
First, the tools that get used most aren't glamorous — password generators and word counters get more traffic than the AI features. That told me breadth matters as much as depth for this kind of product.
Second, every tool runs the same architecture: process in-browser with WebAssembly or plain JS wherever possible, and only send data to a server when it genuinely can't be avoided (the AI writing tools send text for processing but store nothing). Adding a new tool is mostly a UI problem at this point, not an infrastructure one, so shipping fast made sense.
What stayed hard
The AI tools are the exception to "everything is free forever" — the background remover, paraphraser, grammar checker, and summarizer call external models, which costs real money per request. Keeping those free without ads or watermarks is the part I'm still figuring out long-term. If anyone here has run a similar product and found a sustainable model that doesn't compromise on the no-sign-up promise, I'd genuinely like to hear it.
Try it
Everything's live at toollium.com. If there's a specific tool you keep paying for elsewhere, tell me — that's usually how the next batch gets decided.
Top comments (0)