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 Web Developer Tools for Everyday Browser Workflows
Stuck reformatting JSON, cleaning logs, or checking hashes during reviews or incident response? This guide shows how to rely on free, browser-based developer tools like privacy-focused toolcli.com to handle text transforms, time and data conversions, color checks, and JSON/API debugging entirely in the browser with minimal setup and risk.
Choosing the Right Angular Text Editor and WYSIWYG Stack for Browser-Based Projects
Choosing between ngx-editor, @kolkov/angular-editor, and other Angular WYSIWYG options directly shapes how safely you handle in-browser HTML. This guide compares key trade-offs and shows how to pair these editors with online tools like toolcli for faster debugging and cleanup.
Online JSON Viewer and Formatter Guide for Debugging APIs and Logs
When raw API responses, logs, or front‑end state turn into unreadable JSON blobs, a browser‑based viewer and formatter like toolcli lets you safely pretty‑print, validate, and edit them entirely on the client, even for large or dirty payloads that must never leave your device.