Privacy-first
Local-first, with network tools clearly marked
Know your tools instantly
Convert, inspect, and ship faster with toolcli
Text, data, time, colour, security, and generator utilities live in a single workspace so you always know where to go for quick fixes.
High performance
Edge-accelerated delivery
Multi-language & themes
English/Chinese with light/dark modes
Workflow Picks
Featured workflows
01Open workflow →02Open workflow →03Open workflow →
401 / 403 and webhook troubleshooting
API Auth Debugger
Check JSON bodies, diagnose JWT timing issues, and verify HMAC-SHA256 signatures.
Multi-line content processing
List Cleanup & Export
Clean multi-line content, normalize lists, and export reusable formats.
Web image publishing workflow
Responsive Image Publisher
Turn source images into responsive AVIF and WebP assets, ready-to-use picture markup, and one downloadable package.
Tool Picks
Featured tools
JSON Toolkit
Format, compact, or validate JSON payloads.
Batch Image Lab
Compress multiple images in one go with unified settings, previews, and bulk downloads.
Time Studio
Convert timestamps and dates between multiple formats with ease.
Hash Workbench
Generate SHA digests or HMAC signatures for payloads.
Color Lab
Convert between HEX/RGB or generate vibrant palettes instantly.
Identifier Forge
Mint UUIDs, Nano IDs, secure tokens, passwords, or filler text.
Practical guides
From the blog
Online JSON Viewer and Formatter for Client‑Side Payload Debugging
When you’re staring at messy JSON payloads in devtools, you need a fast way to view, format, edit, and validate them without risking sensitive data. This guide shows how privacy-first, client-side toolcli helps you debug APIs entirely in the browser.
Installing Node.Js and Npm on Windows and macOS with Practical Npm Install Usage
If you need a clean local setup for Node.js and npm, this guide walks through installing them on Windows and macOS, verifying node -v and npm -v, using npm install for project dependencies, and avoiding common CLI pitfalls with options like --save-dev and --global.
Base64 Converter in Your Browser: Encode and Decode Text, Images, and PDFs with Toolcli
When you need to inspect or embed Base64 in real projects, a privacy‑first converter that runs entirely in your browser matters. This guide shows how toolcli handles text, images, and PDFs, explains Base64 basics, and helps you avoid common encoding pitfalls.