Toololis — 25 Free Browser Tools,
No Signup, Ever.
We built Toololis as a free browser-based toolkit covering PDFs, images, text, code, and calculations. Every tool runs locally in your browser. Your files never leave your device. No signup. No upload. No watermark. No limit. Ever.
What is Toololis?
Toololis is a free online utility toolkit with 25 browser-based tools. We cover 5 categories — PDF (merge, split, compress, convert), image (compress, resize, convert, crop, QR), developer (JSON, regex, Base64, JWT, hash), calculator (percentage, age, BMI, loan, currency), and text (word count, case, password, Lorem Ipsum, diff). Every tool runs entirely client-side using the HTML5 Canvas API, Web Crypto API, and WebAssembly.
⭐ Most Popular Tools
Our most-used utilities, hand-picked across all categories.
Word Counter
Count words, characters, sentences & reading time instantly
JSON Formatter
Format, validate & minify JSON in your browser
QR Code Generator
Create QR codes for URLs, text, WiFi or anything
Password Generator
Strong, random passwords — generated in your browser
Percentage Calculator
Calculate percentages, increases, decreases & more
Base64 Encoder / Decoder
Encode or decode Base64 instantly
PDF Tools
5 tools · all in your browser
Image Tools
5 tools · all in your browser
QR Code Generator
Create QR codes for URLs, text, WiFi or anything
Image Compressor
Reduce image file size without losing quality
Image Resizer
Resize images by pixels or percentage
Image Format Converter
Convert between JPG, PNG, WebP, AVIF
Image Cropper
Crop images to any aspect ratio
Developer Tools
5 tools · all in your browser
JSON Formatter
Format, validate & minify JSON in your browser
Regex Tester
Test regular expressions in real-time
Base64 Encoder / Decoder
Encode or decode Base64 instantly
JWT Decoder
Decode JSON Web Tokens — 100% client-side
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes
Calculator Tools
5 tools · all in your browser
Percentage Calculator
Calculate percentages, increases, decreases & more
Age Calculator
Calculate exact age in years, months, days, hours
BMI Calculator
Body Mass Index — metric and imperial
Loan Calculator
Monthly payments, total interest & amortization
Currency Converter
Live exchange rates for 170+ currencies
Text Tools
5 tools · all in your browser
Word Counter
Count words, characters, sentences & reading time instantly
Case Converter
UPPERCASE, lowercase, Title Case, camelCase & more
Password Generator
Strong, random passwords — generated in your browser
Lorem Ipsum Generator
Placeholder text in words, sentences or paragraphs
Text Diff Checker
Compare two texts and highlight the differences
Why Choose Toololis Over Other Tool Sites?
Most online tool sites are bloated, slow, and demand signups. Here's our direct comparison on the things that matter.
| Feature | Toololis | Typical tool site |
|---|---|---|
| Signup required | ❌ Never | ✓ Often |
| Files uploaded to server | ❌ Never | ✓ Always |
| Watermark on output | ❌ Never | Often |
| Usage limits | ❌ None | 3 free / day |
| Page load time | < 1 second | 3–8 seconds |
| Mobile-friendly | ✓ Built-for-mobile | Desktop-first |
On the other hand — when classic tool sites make sense
To be fair: server-based tool sites like ilovepdf and smallpdf can handle huge files (500 MB+) more gracefully than a browser can, and their premium tiers offer features we don't — OCR, batch processing on massive collections, API access. If you need to process a 2 GB PDF archive or automate 10,000 documents via an API, a server-based service is still the right fit. For everyday use by individuals and small teams, browser-based wins on speed and privacy.
How to use Toololis
- Pick a tool from the categories above, or use the most-popular grid.
- Drop or paste your input directly on the tool page. No login, no upload prompt.
- Adjust options (quality, format, dimensions) if the tool has them.
- Click the primary action — processing runs in your browser and finishes in milliseconds to a few seconds.
- Download or copy the result. Nothing is stored anywhere. Close the tab — everything is gone.
Key technical terms
- Client-side processing
- All computation happens in your browser using JavaScript. No server receives your files.
- Progressive Web App (PWA)
- A website that behaves like a native app. You can
Add to Home Screenand use it offline. - Canvas API
- Browser-native graphics API we use to resize, compress, and convert images without server round-trips.
- Web Crypto API
- Browser-native cryptography —
crypto.subtle.digest()gives us SHA-256 / SHA-512 hashes without any server.
Toololis by the numbers
Our own build metrics and a few market statistics — we keep these updated quarterly.
Market context: According to HTTP Archive (2024), the median webpage is 2.2 MB. Toololis pages are 22× smaller. The median Core Web Vitals LCP across the web is 2.5 seconds — we target under 1 second.
Our research: In our internal testing across 51 Node functional tests, 100% of tools pass correctness checks including known-vector hashes (SHA-256 of "abc" = ba7816bf…20015ad, matching NIST FIPS 180-4) and mortgage math (verified against bank amortization formulas).
Frequently Asked Questions
What is Toololis?
Are these tools really free?
Do I need to upload my files?
How many tools does Toololis have?
Do the tools work on mobile?
Is Toololis open source?
Our verdict
If you process PDFs, images, text, or code more than once a week and privacy matters to you — bookmark Toololis. Every tool takes one tap to open, runs in milliseconds, and leaves no trace on any server.
Best for: individuals, small teams, developers, writers, students, privacy-conscious professionals.
Not ideal for: enterprise batch pipelines with 10,000+ files per day (use a server-based API).
Full-stack developer based in Germany. I build fast, accessible, privacy-respecting web tools. Also the creator of Promptolis (AI prompt library) and SEO Autopilot.