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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.

Explore workflows Browse all tools

Privacy-first

Local-first, with network tools clearly marked

High performance

Edge-accelerated delivery

Multi-language & themes

English/Chinese with light/dark modes

401 / 403 and webhook troubleshooting

API Auth Debugger

Check JSON bodies, diagnose JWT timing issues, and verify HMAC-SHA256 signatures.

Open workflow →02

Multi-line content processing

List Cleanup & Export

Clean multi-line content, normalize lists, and export reusable formats.

Open workflow →03

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.

Open workflow →

JSON Toolkit

Format, compact, or validate JSON payloads.

Data & APIsLocal processingHistory

Batch Image Lab

Compress multiple images in one go with unified settings, previews, and bulk downloads.

Design & VisualsLocal processingBatch

Time Studio

Convert timestamps and dates between multiple formats with ease.

Date & TimeLocal processing

Hash Workbench

Generate SHA digests or HMAC signatures for payloads.

Security & HashingLocal processing

Color Lab

Convert between HEX/RGB or generate vibrant palettes instantly.

Design & VisualsLocal processingAuto-run

Identifier Forge

Mint UUIDs, Nano IDs, secure tokens, passwords, or filler text.

GeneratorsLocal processing

Online Json Viewer And Formatter · 9 min read

Using an Online JSON Viewer and Formatter for Browser‑Based Debugging Workflows

When API payloads, configs, and logs are all JSON, you need an online viewer and formatter that stays privacy‑friendly. This guide shows how to use toolcli’s in‑browser JSON toolkit to inspect, pretty print, validate, and debug complex data without uploading it.

Unix Timestamp To Date Converter · 9 min read

Using an Online Unix Timestamp to Date Converter in Everyday Developer Workflows

When logs, API payloads or analytics exports are full of epoch values, an online Unix timestamp to date converter in your browser helps you quickly flip between numeric Unix time and human‑readable datetimes, compare UTC vs local time, and avoid seconds vs milliseconds mistakes.

Formatter Json Online · 8 min read

Formatter Json Online Guide: Beautify, Validate, and Inspect API Data in the Browser

Toolcli’s browser‑only JSON formatter helps developers safely beautify, validate, and inspect API responses and logs without uploading data. This guide shows how to format, debug, and compare JSON online using its editor, viewer, and validation tools.