107

Core tools

10

Categories

49

Dedicated pages

1

One place

Core Categories

Browse tools by category so you can move straight to the formatters, converters, generators, calculators, and lookup tools you need.

Developer Tools

23 tools

Developer-focused formatting, encoding, debugging, and API productivity tools.

JSON Formatter Base64 Encoder Base64 Decoder

Network Tools

13 tools

Networking lookup, addressing, headers, DNS, and connectivity utilities.

IP Lookup DNS Lookup Subnet Calculator

AI Tools

12 tools

AI-assisted explainers, generators, and analysis helpers.

Regex Generator Regex Explainer Code Explainer

Everyday utility generators, counters, QR tools, and text helpers.

Random String Generator Random Number Generator Random Name Generator

Calculators

10 tools

Business, finance, sizing, and utility calculators.

GST Calculator EMI Calculator Age Calculator

File, image, PDF, and metadata analysis and conversion tools.

File Hash Generator Image Metadata Viewer PDF Metadata Viewer

Threat intelligence, reconnaissance, and security-analysis tools for analysts and defenders.

Hash Analyzer Password Strength Checker CVE Search

Structured data converters and visualizers for JSON, CSV, XML, YAML, and storage planning.

CSV to JSON Converter JSON to CSV Converter XML to JSON Converter

Security Tools

6 tools

Security-focused generators, encryption helpers, and certificate utilities.

Password Generator SSL Certificate Checker Hash Generator

Log, text, and structured data analysis tools for troubleshooting and anomaly detection.

JSON Diff Tool Log File Analyzer Text Similarity Checker

Featured Tools

Start with the tools people reach for most often when working with JSON, text, encoding, URLs, SQL, and utility workflows.

Developer Tools

JSON Formatter

Format, pretty print, and clean raw JSON with this free JSON Formatter. Paste minified or messy JSON, run the tool, and copy readable output for debugging, editing, or sharing.

  • Format JSON
  • Validate JSON
  • Pretty print JSON
Developer Tools

Base64 Encoder

Encode text to Base64 online with this free Base64 Encoder. Paste plain text, run the tool, and copy the encoded output for tokens, payloads, headers, or data transport.

  • Encode text
  • Encode file
  • Copy output
Developer Tools

Base64 Decoder

Decode Base64 strings online with this free Base64 Decoder. Paste an encoded value, run the tool, and view the decoded text immediately for debugging or review.

  • Decode Base64
  • Decode image content
  • Download file
Security Tools

Password Generator

Generate strong random passwords online with this free Password Generator. Choose the length and options you need, create a password instantly, and copy it for secure account setup.

  • Custom length
  • Symbols toggle
  • Numbers toggle
Developer Tools

UUID Generator

Generate UUID v4 values online with this free UUID Generator. Create one or many UUIDs instantly and copy the result for applications, databases, APIs, or test data.

  • UUID v4
  • Bulk generation
  • Copy values
Developer Tools

JWT Decoder

Decode JWT tokens online with this free JWT Decoder. Paste a token, inspect the header and payload, and review claims such as expiration without manual parsing.

  • Decode token
  • View payload
  • Show expiration
Developer Tools

URL Encoder

Encode URLs, query string values, and special characters safely with this free URL Encoder. Paste text, run the tool, and copy the percent-encoded result for links, APIs, and web forms.

  • Encode URL
  • Handle special characters
  • Copy result
Developer Tools

URL Decoder

Decode percent-encoded URLs and query values online with this free URL Decoder. Paste encoded text, run the tool, and view the readable URL content immediately.

  • Decode encoded URL
  • Copy decoded result
Developer Tools

Timestamp Converter

Convert Unix timestamps to readable date and time values online with this free Timestamp Converter. Paste an epoch value or date, run the tool, and switch between timestamp and human-readable output instantly.

  • Unix timestamp conversion
  • Timezone conversion
Developer Tools

SQL Formatter

Format SQL queries online with this free SQL Formatter. Paste raw SQL, clean the layout instantly, and copy readable output for review, debugging, or query editing.

  • Format SQL
  • Syntax highlighting
  • Copy result
Developer Tools

Regex Tester

Test regular expressions online with this free Regex Tester. Paste a pattern and sample text, run the tool, and review matches instantly while refining your expression.

  • Test regex
  • Highlight matches
  • Regex flags
Data Conversion Tools

CSV to JSON Converter

Convert CSV data to JSON online with this free CSV to JSON Converter. Paste CSV or upload a file, run the tool, and copy structured JSON output in seconds.

  • Upload CSV
  • Convert to JSON
  • Preview JSON

Guides and Comparisons

Start with practical pages that explain common workflows before you jump into the matching tool.

How to Format JSON Online

Learn how to format JSON online, clean messy payloads, and move from raw API responses to readable structured output in a faster workflow.

json formatter json validator

JSON Formatter vs JSON Validator

Understand when to use JSON Formatter and when to use JSON Validator so you can clean JSON faster and catch syntax problems before they break a workflow.

json formatter json validator

URL Encoding Guide

Learn when URL encoding is required, what percent-encoding does, and how to safely encode query parameters, redirects, and callback values.

url encoder url decoder

Base64 vs URL Encoding

Compare Base64 and URL encoding so you can choose the right transformation for links, payloads, tokens, and application data.

base64 encode base64 decode

How to Decode JWT Tokens

Learn how to decode JWT tokens safely, inspect claims such as expiration and issuer, and separate token inspection from signature verification.

jwt decoder base64 decode

How to Check DNS Records

Learn how to check DNS records online and when to look at A, AAAA, MX, TXT, NS, and CNAME results during troubleshooting or deployment work.

dns lookup dns propagation checker

Focused tool pages

Open direct pages for common conversion targets, record types, formats, and preset workflows.

Why use onlinetoolsplanet

The platform is organized to keep common workflows fast, clear, and easy to continue.

  • Browse by category and open the right tool quickly.
  • Run tools in a consistent interface with copy and download actions where they help.
  • Move through related tools when one task leads to the next.
  • Use dedicated pages for common presets without reconfiguring the main tool.