Privacy-first
All processing stays local
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 →
API Debug Workflow
API Debug Workflow
Tidy JSON payloads, decode JWTs, and sign requests in one focused flow.
Content Cleanup Workflow
Content Cleanup Workflow
Clean copy, normalize lists, and export ready-to-use formats.
Frontend Workflow Suite
Frontend Workflow Suite
Compress images, extract colors, and export asset manifests in one immersive workflow.
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 Decoder Encoder as a Privacy-Focused in-Browser Debugging Workspace
When you’re debugging APIs, JWTs, or log snippets, a browser‑only Base64 encoder/decoder lets you safely inspect and transform data without leaking payloads. This guide focuses on using ToolCLI’s in‑browser Base64 utility as a privacy‑friendly workbench for developers.
Using an Online Base64 Encoder and Decoder in Everyday API Debugging
When you’re debugging HTTP headers, JSON payloads, or data URIs, a privacy‑friendly Base64 encoder and decoder running fully in the browser lets you safely inspect, convert, and restore text, binary data, and files without uploading sensitive information.