Developer utility tools: JSON, Base64, UUID, Hashes, Images, etc.
Users
5
−1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#253K
#211K among extensions
Version
1.0.0
updated 22 Jun 2026
Users
monthly, 4 months
Latest, 16 Oct 2026:5 usersMove the mouse over the chart for any month
Ratings count
monthly, 4 months
Latest, 16 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About ToolsBox 4 DEV
ToolsBox 4 DEV — The ultimate developer utility suite right in your browser's side panel.
ToolsBox 4 DEV is a lightweight Chrome extension that provides instant access to a robust set of everyday developer tools directly in your side panel.
Local Tools (100% Offline & Private):
🖥️ JSON & Formats: Validate, format, and beautify raw JSON data instantly.
🔐 Encoding & Cryptography:
Encode and decode strings to and from Base64.
Convert images to Base64 data URLs and back.
Generate MD5 and SHA-1 cryptographic hashes.
🔑 Password & Identifier Utilities:
Highly customizable random password generator.
Generate secure bcrypt password hashes and easily verify them.
Generate standard UUID (v4) identifiers.
🖼️ Local Image Converters:
Convert images to WebP format.
Convert images to AVIF format.
Render and save SVG assets as raster images.
Complementary External Web Tools (requires internet connection):
🔗 QR Code Generator: Direct link to our external service for creating custom QR codes.
🔗 Link Shortener: Direct link to our external URL shortener (DropLink).
Eliminate the security risk of pasting sensitive tokens, JSON payloads, or passwords into online utility websites. Simply open your side panel and work.