01 /utility platform

YOUR TOOLBOX.
WITHOUT THE CLUTTER.

Fast, private tools for developers, creators, and everyday work. Most utilities process data directly inside your browser—your files never upload to our servers.

Explore Tools
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02 /Featured Utilities

ENGINEERED FOR WORK.

Seven core offline utilities, built with zero external telemetry.

JSON Formatter

Format · Validate · Beautify

client-side
json-beautifier.js
{"name":"Toolzen","version":"1.0","private":true,"modules":["json","image","pdf"]}
RAW INPUT
NO UPLOADS · < 5MSOPEN →

QR Generator

Dynamic Vector QR

client
SVG EXPORTOPEN →

Image Compressor

Local Canvas Compress

client
original2.4 MB
compressed762 KB
Quality: 75%Savings: -69%
PNG · JPG · WEBPOPEN →

PDF Tools

Merge · Split · Secure

client
report_q2.pdf1.4 MB
+
appendix_c.pdf450 KB
→
merged.pdf1.8 MB
LOCAL WEBASSEMBLYOPEN →

Unit Converter

Fast Dimensions

client
USD
↔
OMR
CURRENCY · TEMP · WEIGHTOPEN →

Password Generator

Entropy Secure Key

client
P#~|5rF<6V1v
strength: STRONG68 bits
len: 12
CRYPTOGRAPHIC ENTROPYOPEN →

ICO Converter

Multi-size ICO compiler

client
PNGavatar.png
→
ICO
16px32px48px
MULTI-RESOLUTIONOPEN →

Regex Tester

Match · Debug · Export

client
/
([a-z]+)-([0-9]+)
/g
order-abc-123 verified
CAPTURE GROUPS · EXP CONTEXTOPEN →

API Client

Test endpoints offline/proxy

hybrid
GET
/api/v1/users
200 OK42ms
HEADERS · PARAMS · BODYOPEN →

Base64 Converter

Encode/Decode Text & Files

client
TEXT:
Toolzen
↓
BASE64:
VG9vbHplbg==
UTF-8 · URL-SAFE · DRAG & DROPOPEN →

CSV Converter

Convert CSV to JSON/Markdown

client
id,name,role
1,Alice,Dev
↓
| 1 | Alice | Dev |
JSON · YAML · MARKDOWNOPEN →

JWT Decoder

Offline JWT Token Debugger

client
eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiIxMjM0NTY3ODkwIi....SflKxwRJSMeKKF2QT4fwpMeJf36...
HS256 Verified
OFFLINE PARSING · HS256 VERIFYOPEN →

Loan Calculator

Calculate Repayments & APR

client
75% Principal
25% Interest
AMORTIZATION · SVG CHARTSOPEN →

Mortgage Calculator

Calculate PITI & PMI Costs

client
60% P&I
40% Taxes/Ins
PITI · PMI RULESETS · SVGOPEN →
03 /Data Privacy

YOUR FILES DON'T
NEED OUR SERVER.

Whenever possible, Toolzen processes your data directly inside your browser. No uploads, no waiting, and no unnecessary data collection.

Files are processed in-memory and never stored.
Zero tracker injection or third-party ad pixels.
Opt-in server utilities are clearly demarcated.
in-browser pipeline
source fileUser Device
browser engineLocal Memory
beautified resultDownload Ready
client-side isolated 100% PRIVATE
04 /Tool directory

PLATFORM DIRECTORY.

Structured catalog of browser utilities built for high-speed operation.

01

Developer Tools

12 Tools
JSON FORMATTER · REGEX TESTER · API CLIENT · BASE64 · CSV CONVERTER · JWT DECODER · CRON EXPRESSION · UUID GENERATOR · DIFF CHECKER · HASH GENERATOR
EXPLORE →
02

Image Tools

6 Tools
COMPRESSOR · RESIZER · FORMAT CONVERTER · COLOR PICKER
EXPLORE →
03

Document Tools

8 Tools
PDF MERGE · PDF SPLIT · EXCEL TO PDF · SECURE SIGN
EXPLORE →
04

Converters

10 Tools
CURRENCY · UNIT MEASUREMENT · TIMEZONE · HEX TO RGB
EXPLORE →
05

Calculators

7 Tools
LOAN INTEREST · MORTGAGE · DATE DIFFERENCE · PERCENTAGE
EXPLORE →
System Topology
ClientAngular FrontendZoneless SPA
LocalBrowser ProcessingWebAssembly / Web APIs
RemoteASP.NET Core Web APISecure Fallback Service
core web vitalsEXCELLENT
avg response< 15ms
05 /Built in public

ENGINEERED,
NOT JUST ASSEMBLED.

Toolzen is architected as a modular, browser-first application. We avoid large runtime dependencies and bulky packages, prioritizing instant interaction and full client-side execution.

Angular 22+ASP.NET Core 8.0WebAssemblyVanilla CSSDocker
View on GitHub