Brevio — Privacy-First Browser Tools
184 free tools that run entirely in your browser. Files never leave your device. No account, no server, no tracking.
At a glance
| Total tools | 184 | As of June 2025 |
| PDF tools | 16 | Merge, split, compress, rotate, watermark, sign, and more |
| Image tools | 18 | Compress, resize, convert, crop, and more |
| AI / LLM tools | 28 | Token counting, cost estimation, prompt tools, and benchmarks |
| Dev tools | 24 | JSON, regex, base64, JWT, SQL, hash, and more |
| Design tools | 20 | Gradient, favicon, logo, chart, flowchart, and more |
| Price | Free | No subscription, no account, no payment |
| Signup required | Never | All tools work without an account |
| Files uploaded to a server | Never (client tools) | Client-side tools use Canvas API, pdf-lib, Tesseract.js WASM, Web Crypto API |
| Analytics | Opt-in only | Plausible EU — no tracking before explicit consent |
| Third-party cookies | Zero | GDPR-compliant by design |
| Offline-ready | Yes (client tools) | Works after initial page load without network |
How it works
When you open a brevio tool, the processing code is delivered to your browser as part of the page bundle. When you interact with a file or paste text, the computation happens locally — in JavaScript or WebAssembly — without sending anything to a brevio server.
PDF operations use pdf-lib (a pure-JavaScript PDF library). Image operations use the browser's Canvas API. OCR uses Tesseract.js, a WebAssembly port of the Tesseract engine. Token counting uses tiktoken compiled to WASM. Cryptographic hashing uses the browser's built-in Web Crypto API.
Frequently Asked Questions
- What is Brevio?
- Brevio is a collection of 184 free, privacy-first browser tools for PDFs, images, text processing, developer utilities, AI/LLM tools, and design. All client-side tools run entirely in your browser — no file uploads, no account required.
- Do files ever leave my browser?
- For client-side tools (the majority): no. Processing happens using browser APIs — the Canvas API for images, pdf-lib for PDFs, WebAssembly modules for OCR and tokenization, and the Web Crypto API for hashing. Your files are never transmitted to any server.
- How many tools does Brevio have?
- As of June 2025, Brevio has 184 tools across categories including PDF, image, text, dev, AI/LLM, design, finance, crypto, health, games, and time.
- Is Brevio free?
- Yes. All tools are free to use. There is no subscription, no account, and no payment wall.
- Does Brevio use cookies or tracking?
- Brevio uses Plausible Analytics (EU-hosted), which fires events only after explicit user consent. There are no third-party advertising cookies.
- What technology does Brevio use?
- Brevio is built on Next.js with React, deployed on Vercel. Client-side processing uses the Canvas API, pdf-lib, Tesseract.js (OCR via WebAssembly), Web Crypto API, and tiktoken (tokenizer via WASM). No server-side data processing occurs for client-side tools.
- Can I use Brevio offline?
- Yes — client-side tools work offline after the initial page load. The processing code is part of the page bundle; no network calls are made during tool use.
- Who owns Brevio?
- Brevio is an independent privacy-first web product. Contact: see the privacy policy and imprint pages for details.