José Donato

Tools

Small, fast tools that run entirely in your browser. No uploads, no accounts; most never send your data anywhere.

trading

Markets, crypto, and investing: live data and finance basics.

BTC 100K Countdown

A real-time Bitcoin price tracker that shows the progress towards $100,000, powered by Pyth Network's price feeds.

ETF & Investing 101

Interactive quiz on ETF and investing basics: diversification, compound interest, accumulating funds, and risk. Originally a Christmas gift.

ai

AI-assisted helpers for text, content, and ideas.

EmojiSense

AI-powered emoji suggestion tool that helps you find the perfect emojis for your text. Get customized emoji recommendations instantly.

Gift Helper

AI-powered gift suggestion tool that helps you find the perfect gift for your family, friends, and anyone else you want to give a gift to.

Quiz Generator

Transform your blog posts into interactive quizzes powered by AI.

media & files

Edit images, video, and PDFs. Everything runs client-side, nothing is uploaded.

Image Blur

Blur or pixelate regions of any image. Draw rectangles or paint freehand masks, adjust intensity, export PNG. 100% client-side.

Video Cutter

Trim videos losslessly in your browser — no re-encoding, no quality loss, no upload. MP4, MKV, WebM, MOV. Cuts snap to keyframes.

PDF Editor

Merge, reorder, delete, split and rotate pages, then add text, images, or a drawn signature to any PDF. 100% client-side — your files never leave your device.

Image Compressor

Compress and convert images to WebP, AVIF, JPEG or PNG. Batch mode, quality slider, optional resize. 100% client-side — your images are never uploaded.

Image Editor

Paste or upload an image, drop more on top, resize and rotate them, then add text, arrows, shapes and freehand notes. Lossless PNG export — 100% in your browser.

dev

Small utilities for building and shipping.

Sprite your SVGs

Transform and optimize your SVGs by generating an efficient sprite. Reduce HTTP requests, style with CSS, and externalize icon data.

JSON Formatter

Format, beautify and validate JSON with instant feedback.

Quick Image Upload

Upload an image and get a short shareable URL. Handy whenever you need a quick public link to a picture — like pasting a screenshot into Claude Code over SSH from your phone. Optional password, auto-expires in 1h.