Tools.
Small browser tools, utilities, and experiments that started from real work.
Built on didof.dev
Conway's Game of Life
Interactive simulation of cellular automata. Explore patterns and watch life evolve.
CSV Table Cleaner
Clean your CSV files instantly. Remove blank rows and optimize data for processing using Go and WebAssembly.
Shader Water Generator
Customize and export premium GLSL water shaders. Control waves, noise, materials, and colors with real-time preview.
Browser Fingerprint Probe
See how a website can identify your device without cookies. Five-phase walkthrough generating a 256-bit hardware SimHash live in your browser.
Extension Fingerprint Demo
A safe mock professional feed showing how exposed browser extension resources can become proxy fingerprinting signals.
Powered by Velocaption
Video Trimmer
Trim and export as MP4 with filmstrip timeline.
Video Compressor
Reduce file size with 5 quality presets.
Video Converter
Convert between MP4, WebM, and MKV.
Video Rotator
Rotate 90°, 180°, or 270° and export.
Video Cropper
Interactive crop with aspect ratio presets.
Video Resizer
Downscale to 480p, 720p, or 1080p.
Audio Extractor
Extract audio as AAC, Opus, or WAV.
Video Watermarker
Add text or image watermark to every frame.
Webcam Recorder
Record webcam + mic, trim, export MP4.
Screen Recorder
Record screen or tab with optional mic.
Image Compressor
Reduce size as JPEG, WebP, or PNG.
Image Converter
Convert between JPEG, WebP, and PNG.
Image Rotator
Rotate 90°, 180°, or 270° and download.
SRT Validator
Check .srt files for timestamp and index errors.
VTT Validator
Verify .vtt file syntax and cue formatting.
Palette Extractor
Extract colors from images via K-Means clustering.
Video Speed Changer
Speed up or slow down any video from 0.5x to 2x.
Powered by LinkPreview.ai
Free Carousel Editor
Design pro-grade Instagram and LinkedIn carousels in your browser. 16 templates, 4 packs, 12 themes, brand kit, PDF + PNG export. 100% free, zero sign-up.
WhatsApp Link Generator
Create a custom WhatsApp 'Click to Chat' wa.me link and QR code instantly. Pre-fill your message, copy the HTML snippet, and connect with customers for free.
Background Remover
Remove the background from any image instantly for free. Powered by AI, runs entirely in your browser — no uploads, no accounts, no watermarks.
Emergency (ICE) QR Code
Generate a secure, offline medical ID for your helmet, wallet, or keychain. Vital info for first responders, zero data stored on servers.
Luggage & Property Tag
Protect your bags without broadcasting your home address. Generate a secure 'If Found' QR code that works offline in airports anywhere.
Image to Offline QR Codes
Turn any photo into a sequence of secure, scannable QR codes. Share images across air-gapped devices without WiFi, Bluetooth, or the cloud.
Digital Business Card (vCard)
Generate a professional, privacy-first QR business card. No monthly fees, no tracking. Scans directly to phone contacts.