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 Compare Workflows for API and QA Debugging
When API responses, configs, or test baselines drift, an online JSON compare workspace like toolcli’s browser-based diff helps you quickly spot real data changes, ignore noise such as formatting or key order, and keep debugging and regression checks fast and private.
Running JavaScript Online in the Browser with Developer-Friendly Tool Workflows
When you want to run, debug, or format JavaScript directly in the browser without local setup, online editors, compilers, and playgrounds become part of your daily workflow. This guide focuses on privacy‑friendly tooling and browser‑based workflows built around toolcli.
Using Base64 Studio as a Browser-Based Encoder and Decoder in Developer Workflows
Need to inspect encoded headers, JSON blobs or files without leaving your browser? This guide shows how developers can use toolcli’s Base64 Studio as a free, privacy‑friendly Base64 encoder/decoder for everyday web, API and logging workflows.