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100% Client-Side · No Servers · Total Privacy

Powerful tools, right in your browser

Linters, calculators, converters, encoders, and more — all running entirely in your browser. Zero servers. Your data never leaves your device.

76+ tools10 categories100% free
Explore ToolsHow It Works

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Active Tools

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Categories

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Servers Used

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See tools in action

Previews — try the real thing with one click

my-bucketassetsimages
hero-banner.png2.4 MB
product-shots/—
logo.svg12 KB
brand-guide.pdf8.1 MB
icons/—
5 objects · 3 files, 2 foldersConnected · AWS S3
Cloud Storage

S3 Storage Explorer

Browse, upload, download, and manage files across any S3-compatible storage — AWS, GCS, MinIO, Cloudflare R2, and more. Entirely client-side with encrypted credentials.

  • 4 view modes — list, grid, thumbnail, column
  • Drag-and-drop upload with progress tracking
  • Folder download as ZIP, rename, copy & paste
  • Real-time analytics with storage breakdown charts
Open S3 Explorer
Design & Visual

Gradient Generator

Create stunning CSS gradients with an intuitive visual editor. Choose from linear, radial, or conic types — add multiple color stops, adjust angles, and copy production-ready CSS in one click.

  • 10 curated presets to start from
  • Real-time preview as you edit
  • Copy CSS with one click
Try Gradient Generator

Cosmic Fusion

background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
SIP Calculator

Monthly SIP

₹10,000

Duration

15 yrs

Invested₹18,00,000
Returns₹32,86,573
Total Value₹50,86,573
Year 1Year 15
Calculators

Financial Calculators

Plan investments with 21 financial calculators — SIP, compound interest, EMI, NPS, PPF, FD, and more. Get instant breakdowns with year-by-year tables and visual charts.

  • 21 calculators for every financial need
  • Year-by-year breakdown tables
  • Export results to CSV
Try SIP Calculator
Linters & Validators

Instant Code Validation

Paste JSON, YAML, XML, HTML, CSS, JavaScript, or Markdown and get instant validation with precise error locations, auto-formatting, and tree visualisation.

  • 11 language validators
  • Line-level error highlighting
  • Auto-format & pretty-print
Try JSON Linter
data.json
1{
2 "name": "STEPlus Tools",
3 "version": "1.0.0",
4 "private": true,
5 "tools": 76
6}
Valid JSON — 0 errors, 6 lines
Color Converter
HEX#10B981
RGBrgb(16, 185, 129)
HSLhsl(160, 84%, 39%)
OKLCHoklch(0.69 0.17 163)
Converters

Universal Converters

Convert between color formats, units, currencies, number bases, timezones, data formats, and more. Instant bidirectional conversion with live preview.

  • 8 converter tools in one place
  • HEX, RGB, HSL, OKLCH & more
  • Real-time bidirectional conversion
Try Color Converter
Encoders & Decoders

Encode, Decode & Generate

Base64, URL encoding, JWT decoding, hash generation, UUID creation, QR codes, and AES encryption — all client-side. Debug tokens, generate secure hashes, and create QR codes instantly.

  • 7 encoding & security tools
  • QR codes with custom styling
  • JWT decode with expiry check
Try QR Generator
QR Code Generator

Input Text

https://tools.steplus.co
RegEx Tester

Pattern

/\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,}\b/gi
Contact us at hello@steplus.co or support@steplus.co for help.

2

Matches

2

Groups

0

Errors

Text Tools

Text Processing Suite

Diff text, count words, convert cases, test regex patterns, generate lorem ipsum, manipulate strings, and write Markdown — all with instant visual feedback.

  • 7 text processing tools
  • Live regex match highlighting
  • Side-by-side text diff view
Try RegEx Tester
Developer Tools

Developer Toolkit

Build cron expressions visually, explore HTTP status codes, mock API responses, generate meta tags, robots.txt, .htaccess rules, and JSON schemas — everything a developer needs.

  • 8 essential dev tools
  • Visual cron expression builder
  • Meta tag & robots.txt generators
Try Cron Builder
Cron Builder
0 9 * * 1-5

Every weekday at 9:00 AM

0

Min

9

Hour

*

Day

*

Month

1-5

Weekday

Next 3 runs

Mon, 3 Mar 2026 09:00
Tue, 4 Mar 2026 09:00
Wed, 5 Mar 2026 09:00
Test Data Generator
IDNameEmailCity
1Ananya Sharmaananya@mail.coMumbai
2Ravi Patelravi.p@inbox.ioBangalore
3Meera Joshimeera.j@test.coPune
4Arjun Reddyarjun@demo.devHyderabad
4 rows·JSON / CSV / SQL export
Data Tools

Data Generation & Editing

Generate realistic test data with Faker.js, edit CSV files with a spreadsheet-like interface, and convert between SQL and JSON — all without leaving your browser.

  • Realistic names, emails, addresses
  • Spreadsheet-style CSV editor
  • Export as JSON, CSV, or SQL
Try Data Generator
Privacy & Security

Security Essentials

Generate strong passwords, check password strength, create privacy policies, and decode SSL certificates — all processed locally with zero network exposure.

  • Cryptographically secure generation
  • Strength meter with entropy score
  • Privacy policy & SSL tools
Try Password Generator
Password Generator
kX9$mR2@vL5#nQ8&pT
StrengthVery Strong
Length18
Entropy107 bits
Uppercase✓
Symbols✓
S3 Explorer
JSON Linter
YAML Linter
XML Linter
HTML Validator & Preview
Simple Interest
Compound Interest
NPS Calculator
EPF Calculator
Unit Converter
Currency Converter
Color Converter
Number Base Converter
Base64 Encoder/Decoder
URL Encoder/Decoder
JWT Decoder
Hash Generator
Text Diff
Word Counter
Case Converter
Lorem Ipsum Generator
Gradient Generator
Box Shadow Generator
Favicon Generator
SVG Editor
Cron Builder
HTTP Status Codes
API Response Mocker
Chmod Calculator
CSV Editor
Test Data Generator
SQL ↔ JSON
Password Generator
Password Strength Checker
Privacy Policy Generator
SSL Certificate Decoder
S3 Explorer
JSON Linter
YAML Linter
XML Linter
HTML Validator & Preview
Simple Interest
Compound Interest
NPS Calculator
EPF Calculator
Unit Converter
Currency Converter
Color Converter
Number Base Converter
Base64 Encoder/Decoder
URL Encoder/Decoder
JWT Decoder
Hash Generator
Text Diff
Word Counter
Case Converter
Lorem Ipsum Generator
Gradient Generator
Box Shadow Generator
Favicon Generator
SVG Editor
Cron Builder
HTTP Status Codes
API Response Mocker
Chmod Calculator
CSV Editor
Test Data Generator
SQL ↔ JSON
Password Generator
Password Strength Checker
Privacy Policy Generator
SSL Certificate Decoder

How it works

Three principles behind every tool

01

Runs in Your Browser

Every tool executes entirely client-side using Web APIs. There are no backend servers, no API calls, and no data transmitted over the network. Your input stays in your tab.

02

Encrypted at Rest

When data is persisted to localStorage, it's encrypted with AES-256-GCM using the Web Crypto API. Keys are derived via PBKDF2 and held in memory only — never written to disk.

03

Zero Telemetry

No analytics scripts, no tracking pixels, no cookies, no third-party code. Nothing leaves your device. Not even error reports. You have absolute privacy.

Browse by category

78 tools organised across 10 categories

Storage & Explorer

1

Browse and manage cloud object storage directly from your browser

Linters & Validators

11

Validate, format, and minify code and data files instantly

Calculators

21

Indian financial calculators with charts and yearly breakdowns

Converters

8

Convert between units, currencies, colors, formats, and more

Encoders & Decoders

7

Encode, decode, hash, and generate cryptographic data

Text Tools

7

Diff, count, convert, and manipulate text

Design & Visual Tools

6

Generate gradients, shadows, favicons, SVGs, and compress images

Developer Tools

8

Cron builder, HTTP codes, chmod, .htaccess, meta tags, and more

Data Tools

3

Edit CSVs, generate fake data, and convert between SQL and JSON

Privacy & Security

4

Generate passwords, check strength, and decode certificates

Built for developers

Thoughtful features across every tool

Real-time Validation

Instant linting and formatting as you type — no submit buttons, no waiting.

Export Anywhere

Download as CSV, JSON, SVG, PNG, or copy to clipboard. Every tool outputs usable files.

Dark Mode

Full dual-theme support with carefully tuned contrast and glass effects for both modes.

Keyboard Shortcuts

⌘K to search, tool-specific shortcuts, and keyboard navigation throughout.

Mobile Ready

Responsive layout, touch-optimised controls, and adaptive grids for every screen size.

Zero Setup

No accounts, no installs, no configuration. Open and start using any tool instantly.

Your data, your device

Every tool is architected with a zero-trust philosophy. Data processing happens exclusively in your browser tab — nothing is transmitted, stored on servers, or accessible to us.

  • All computation runs client-side via Web APIs
  • AES-256-GCM encryption for any persisted data
  • No analytics, cookies, or tracking scripts
  • No third-party code or external requests
  • Keys derived via PBKDF2, held in memory only

Your Input

Raw data stays in your browser tab

AES-256-GCM Encryption

Web Crypto API encrypts before storage

localStorage

Encrypted payload. Only your device decrypts.

No AnalyticsNo CookiesNo TrackingOpen Architecture

Frequently Asked Questions

Everything you need to know

What data do you store?+
All data is stored exclusively in your browser's localStorage, encrypted with AES-256-GCM. No data is ever sent to any server. You can clear it anytime from your browser settings.
How is encryption handled?+
We use the Web Crypto API with AES-256-GCM encryption. A key is derived using PBKDF2 from a device-stable fingerprint. Keys are held in memory only — never written to disk or transmitted.
Can I export my data?+
Yes. Most tools provide download and copy buttons. Calculator results can be exported to CSV, code tools offer file downloads, and design tools export PNG, SVG, and CSS.
Does it work offline?+
Most tools work offline once the page is loaded, since everything runs in your browser. Currency Converter is the only exception — it needs internet to fetch live exchange rates.
Which browsers are supported?+
All modern browsers — Chrome, Firefox, Safari, Edge, and their mobile versions. We use standard Web APIs (Web Crypto, Intersection Observer, Canvas) that are widely supported.
How accurate are the calculators?+
Financial calculators use standard formulas (compound interest, EMI, SIP) with IEEE 754 double-precision arithmetic. Results match what banks and financial institutions use.
Is this open source?+
Tools is developed by STEPlus. Contact us for licensing and collaboration inquiries.

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76+ tools, zero setup, total privacy. Just open and use.

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