Zolkit

Zolkit is a collection of fast, focused web utilities for everyday file, text, media, and productivity tasks. It solves the problem of cluttered online tools with intrusive popups, tracking, and forced uploads by offering a local-first approach where tools run directly in the browser, keeping user data on the device. The target audience includes developers, creators, students, and digital professionals. It is positioned as a privacy-minded alternative to other online tools, with no accounts, setup, or installation required.

Key features

• AI object removal from photos
• AI background removal for images and videos
• AI image upscaling
• Image compression (JPG, PNG, WebP)
• WebP and AVIF conversion
• SVG optimization and conversion to components
• JSON formatting and validation
• Diff checking for text and documents
• Password generation
• Base64 encoding/decoding
• Word counting and reading time estimation
• Cron expression builder
• Color conversion (HEX, RGB, HSL, Tailwind)
• Mortgage and Amazon FBA calculators
• Hash and UUID generation
• Regex testing
• URL encoding/decoding
• Time zone conversion and meeting planner
• Countdown, Pomodoro, stopwatch, interval timers
• Unit, percentage, BMI calculators
• Business Model Canvas tool
• Markdown editor, converter, viewer
• Mermaid diagram viewer
• AI OCR for images and PDFs
• Audio enhancer, vocal remover, audio to text
• Video editor, converter, compressor, trimmer, joiner
• Screen recorder