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
Base64 Online Encoder Decoder Workflows in the Browser with ToolCLI
When you need to inspect or reshape Base64 payloads directly in the browser, ToolCLI offers a privacy‑first workspace to encode text, files, and images, decode Base64 back to assets, and handle URL‑safe variants without switching between separate tools or scripts.
Browser-Based XML Formatting and Validation in JSON/XML Debugging Workflows
When you are debugging XML‑based APIs or configuration files, a browser‑based Online Xml Formatting Tool like toolcli.com helps you quickly pretty‑print, validate, and minify XML locally, keeping sensitive responses and integration test data private while streamlining everyday JSON/XML workflows.
Json Online Format Workflows for Debugging APIs in the Browser
When API responses or log payloads turn into unreadable blobs, a browser-based Json Online Format workflow helps you pretty print, validate, and edit JSON entirely client-side. This guide shows how privacy-first tools like toolcli streamline day-to-day debugging without leaking sensitive data.