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Free Developer Tools

Useful tools for developers and designers - free, fast, no signup.

JSON

JSON Viewer

Visualize and explore JSON data in a collapsible tree

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JSON

JSON Formatter

Beautify or minify your JSON instantly

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Converter

JSON to CSV

Convert JSON arrays to CSV files

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Converter

JSON to YAML Converter

Convert JSON to YAML and YAML to JSON with validation and copyable output

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Text

Word Counter

Count words, characters, and reading time

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Text

Case Converter

Convert text between all case formats

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Text

Text Diff Checker

Compare text, code, JSON, and documents with inline differences

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Generator

Lorem Ipsum Generator

Generate placeholder text instantly

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Generator

QR Code Generator

Generate QR codes for links, text, email, phone, SMS, and Wi-Fi

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Text

Markdown Preview Editor

Write Markdown and preview formatted HTML instantly

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Developer

Base64 Encoder/Decoder

Encode and decode Base64 strings

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Developer

Hash Generator

Generate MD5, SHA, and HMAC hashes from text or files

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Generator

Cron Expression Generator

Build, explain, and preview cron schedules with next run times

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Formatter

SQL Formatter

Format, beautify, minify, and clean SQL queries online

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Image

Image Compressor & Resizer

Compress, resize, and convert images to WebP, JPEG, or PNG

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Developer

JWT Decoder & Inspector

Decode JWT header, payload, expiry, and claims locally in your browser

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Converter

Unix Timestamp Converter

Convert Unix timestamps, epoch time, UTC, local dates, and milliseconds instantly

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Developer

URL Encoder/Decoder

Encode or decode URL strings

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Developer

Color Converter

Convert between HEX, RGB, and HSL

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Developer

Regex Tester

Test and debug regular expressions

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Generator

Password Generator

Generate strong, secure passwords

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Generator

UUID Generator

Generate unique identifiers instantly

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Firebase

Firebase Cost Calculator

Estimate Firebase costs from Firestore, Hosting, storage, and traffic usage

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Firebase

Firebase Rules Generator

Generate starter Firestore and Storage security rules

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Android

Android Manifest Generator

Create AndroidManifest.xml snippets with permissions and deep links

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Android

Deep Link Generator

Generate app links, Android intent URLs, and manifest intent filters

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Firebase

FCM Payload Builder

Build Firebase Cloud Messaging JSON payloads for tokens, topics, and conditions

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Android

Logcat Analyzer

Analyze Android logcat output for errors, warnings, crashes, and exceptions

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Android

APK Size Analyzer

Inspect APK file size by category and largest ZIP entries

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Android

Play Store Release Notes Generator

Generate Google Play release notes under the 500-character limit

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Finance

SIP Calculator

Calculate SIP investment value with sliders for monthly amount, return rate, and time period

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Finance

Step-up SIP Calculator

Calculate SIP returns when your monthly investment increases every year

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Finance

Lumpsum Calculator

Estimate future value and returns from a one-time investment

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Finance

SWP Calculator

Estimate systematic withdrawal plan balance and monthly cash flow

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Finance

EMI Calculator

Calculate loan EMI, total interest, and total repayment amount

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Finance

FD Calculator

Calculate fixed deposit maturity value with compounding frequency

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Finance

RD Calculator

Calculate recurring deposit maturity from monthly deposits

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Finance

PPF Calculator

Estimate Public Provident Fund maturity amount with yearly investment

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Finance

GST Calculator

Add or remove GST and view tax breakup instantly

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Finance

CAGR Calculator

Calculate compound annual growth rate from start value, end value, and duration

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