About Tooloco
What is Tooloco?
Tooloco is a collection of 95 free, browser-based tools for everyday conversion and transformation tasks. Whether you need to convert an image from JPG to PNG, transform text to uppercase, convert kilometers to miles, work with PDF files, or create a quick meme — Tooloco has a tool for it. Every single tool on the site runs entirely inside your web browser. Nothing is ever sent to a server. Your files never leave your device.
The site covers 11 categories: Image Converters, Text Tools, Unit Converters, Color Tools, Number Converters, Data Tools, Audio Converters, Video Converters, Developer Utilities, Meme Maker, and PDF Tools — with more categories and tools being added regularly.
Why we built it
Most online converter tools make you upload your files to a remote server. That means your photos, documents, and data are transmitted over the internet, stored temporarily (or permanently) on someone else's infrastructure, and potentially subject to third-party access or data breaches. For everyday conversion tasks — resizing a photo, reformatting a document, encoding a string — this is an unnecessary risk.
We built Tooloco on a simple premise: every conversion that can be done in the browser should be done in the browser. Modern web APIs — the Canvas API for image processing, WebAssembly for audio and video encoding, the Web Crypto API for security tools — are powerful enough to handle the vast majority of everyday conversion tasks with no server required. The result is a tool that is faster, more private, and completely free with no usage limits.
How it works
Different tool categories use different browser technologies under the hood:
- 🖼️Image toolsuse the browser's built-in Canvas API to read, manipulate, and re-encode image data. Conversion is instant and lossless where possible.
- 🎵Audio and video tools are powered by FFmpeg compiled to WebAssembly — the same professional-grade encoder/decoder used in desktop applications, running entirely inside your browser tab.
- 📄PDF tools use pdf-lib and PDF.js — open-source libraries for reading, modifying, and rendering PDF documents client-side.
- 📐Unit and number converters apply precise mathematical formulas directly in JavaScript — results are instant and accurate to full floating-point precision.
Who is Tooloco for?
Tooloco is built for anyone who regularly needs to convert, transform, or work with digital files and data:
- Web developers and designers who need to quickly convert image formats, check color codes, or encode strings
- Students and researchers who need unit conversions, number base conversions, or text formatting
- Content creators who need to resize images, convert HEIC photos from iPhones, compress PDFs, or make quick memes
- Privacy-conscious userswho don't want to upload personal files to unknown third-party services
- Everyday users who just need a quick conversion tool without installing software or creating accounts
Our values
- ✅Free forever — all tools are completely free to use with no usage limits
- ✅No account required — use any tool immediately with no sign-up, no email, no subscription
- ✅Privacy by design — your files and data are processed locally and never transmitted anywhere
- ✅No software to install — everything runs in your browser on any device, including mobile
Have a question, found a bug, or want to suggest a new tool? Get in touch — we read every message.