Free Online Tools

Troubleshooting tools, developer tools, and productivity utilities right in your browser

Most Used Daily Tools

Calc

Online Calculator

Fast calculator for daily math operations with percentage and memory-friendly workflow.

Daily
Unit

Unit Converter

Convert length, weight, temperature, and speed units instantly.

Converter
FX

Currency Converter

Live currency conversion using daily exchange rates for major world currencies.

Finance
BMI

BMI Calculator

Body Mass Index calculator with health category output.

Health
Age

Age Calculator

Calculate exact age in years, months, and days from date of birth.

Daily
EMI

Loan EMI Calculator

Compute monthly EMI for loans using principal, interest rate, and tenure.

Finance
Tip

Tip Calculator

Calculate tip and split bill amount quickly for restaurants and services.

Daily
QR

QR Code Generator

Create downloadable QR codes for links, text, phone numbers, and more.

Utility
Wx

Weather Checker

Check current weather and temperature for any city worldwide.

Weather
TZ

Time Zone Converter

Convert date and time between major global time zones instantly.

Time
Txt

Word Counter

Count words, characters, sentences, and reading time for any text.

Writing
Img

Image Resizer

Resize images in-browser and download optimized versions quickly.

Image
B64

Base64 Encoder Decoder

Encode and decode Base64 text directly in your browser.

Developer
UUID

UUID Generator

Generate v4 UUIDs instantly for apps, APIs, and databases.

Developer
Rnd

Random Number Picker

Generate random numbers in custom ranges for giveaways and decisions.

Utility

Developer Tools

{ }

JSON Formatter & Validator

Format, beautify, minify, and validate JSON instantly. Find syntax errors and fix them.

Developer
.*

Regex Tester

Test regular expressions with real-time match highlighting and preset patterns.

Developer
M↓

Markdown Previewer

Write and preview Markdown in real-time. Side-by-side editor with live rendering.

Developer
!?

Error Message Explainer

Paste any error message and get a plain-English explanation with step-by-step fixes.

Developer

Security & Identity

***

Password Generator

Generate strong, secure passwords with customizable length and character types.

Security
@

Random Username Generator

Create unique usernames for gaming, social media, and professional accounts.

Identity

Text & Productivity

Aa

Text Case Converter

Convert between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and 12 more.

Productivity
TL;DR

AI Text Summarizer

Summarize long articles, essays, and documents. Extract key points automatically.

Productivity

Troubleshooting Tools

SV

App Server Status Checker

Check if an app or service is down, degraded, or facing a regional outage.

Troubleshooting
OF

Outage Finder

Find ongoing outages and user-reported incidents for major apps and websites.

Outage
SP

Internet Speed Checker

Run a quick browser-based speed estimate and latency snapshot.

Network
DN

DNS Checker

Resolve DNS records for a domain and identify common DNS issues.

DNS
UP

App Update Checker

Find official app pages quickly to verify latest version and update notes.

App
SC

Subscription Cancel Helper

Get quick platform-specific paths to cancel recurring app subscriptions safely.

Billing
WD

Website Down Checker

Check if a website is down globally or just blocked on your connection.

Web
AP

API Response Checker

Validate API endpoint reachability and basic response timing from browser.

API
LG

App Login Troubleshooter

Step-by-step helper for login failures, MFA issues, and account lockouts.

Account
WF

Wi-Fi Troubleshooter

Guided checks for Wi-Fi connected but no internet and unstable drops.

Network
VP

VPN Connection Checker

Diagnose VPN connection failures and identify DNS or tunnel conflicts.

VPN
PG

Latency Ping Tester

Measure quick round-trip latency from browser with multiple requests.

Network
SL

SSL Certificate Checker

Quickly review HTTPS validity and certificate availability for a domain.

Security
DP

DNS Propagation Helper

Track post-change DNS propagation and verify global resolver visibility.

DNS
CC

App Cache Clear Helper

Get safe cache-clearing steps for Android, iOS, and desktop apps.

App
NT

Push Notification Checker

Check browser notification permissions and likely blockers instantly.

Device
MC

Microphone & Camera Checker

Verify camera and microphone access from browser before calls/meetings.

Device
PR

App Permission Checker

Review critical browser permissions that commonly break app features.

Device
BC

Browser Compatibility Checker

Test whether your browser supports modern web APIs required by apps.

Browser
ST

Storage Space Checker

Inspect available browser storage quota and usage for web apps.

Storage
BT

Battery Health Helper

Identify battery drain factors that impact app performance and stability.

Device
EM

Email Deliverability Checker

Troubleshoot missing verification/reset emails with DNS and spam checks.

Email
PY

Payment Failure Helper

Diagnose declined payment, pending charge, and billing retry issues.

Payments
SB

Streaming Buffering Fixer

Quick triage for buffering, low bitrate, and playback interruptions.

Streaming
AR

Account Recovery Helper

Structured recovery checklist for locked, hacked, or inaccessible accounts.

Account

Advanced Troubleshooting Tools

TS

Status Page Finder

Find official status pages and real-time outage signals for any service.

Troubleshooting
TS

App Outage Map

Build region-based outage checks with quick incident verification links.

Troubleshooting
TS

Server Response Time Checker

Measure quick response time and identify high-latency services.

Troubleshooting
TS

Domain Health Checker

Run core domain checks for DNS reachability and issue triage.

Troubleshooting
TS

ISP Outage Helper

Check ISP-level outages and distinguish them from app-only failures.

Troubleshooting
TS

CDN Reachability Checker

Test CDN edge reachability and latency symptoms.

Troubleshooting
TS

API Health Helper

Quickly validate API endpoint health and status behavior.

Troubleshooting
TS

HTTP Error Troubleshooter

Diagnose HTTP 4xx/5xx patterns with actionable next steps.

Troubleshooting
TS

DNS Flush Helper

Get platform-specific DNS cache flush and resolver reset guidance.

Troubleshooting
TS

IPv6 Connectivity Helper

Identify IPv6 route issues that break selective services.

Troubleshooting
TS

Proxy Detection Helper

Check likely proxy interference with app and web traffic.

Troubleshooting
TS

Firewall Conflict Checker

Find common firewall and security rule conflicts.

Troubleshooting
TS

Port Blocking Helper

Troubleshoot port restrictions impacting calls, games, and apps.

Troubleshooting
TS

WebSocket Issue Helper

Debug live-update and real-time socket connection failures.

Troubleshooting
TS

SSL Handshake Helper

Fix certificate and TLS handshake errors quickly.

Troubleshooting
TS

App Lag Diagnoser

Isolate app lag caused by network, device, or backend bottlenecks.

Troubleshooting
TS

Stuck Loading Screen Helper

Resolve endless loading screen and spinner issues.

Troubleshooting
TS

Crash Loop Helper

Troubleshoot repeated app crash loops with safe recovery steps.

Troubleshooting
TS

Account Lockout Helper

Recover locked accounts with safer identity recovery flow.

Troubleshooting
TS

MFA Code Delay Checker

Fix delayed one-time code delivery and validation errors.

Troubleshooting
TS

Email Verification Helper

Diagnose missing verification emails and sender issues.

Troubleshooting
TS

SMS Verification Helper

Troubleshoot SMS OTP failures and delivery delays.

Troubleshooting
TS

Payment Gateway Helper

Investigate gateway declines, retries, and pending states.

Troubleshooting
TS

Refund Status Helper

Track refund timelines and identify stuck refund scenarios.

Troubleshooting
TS

Subscription Renewal Helper

Fix failed subscription renewals and billing loops.

Troubleshooting
TS

In-App Purchase Helper

Resolve in-app purchase failures across app stores.

Troubleshooting
TS

Stream Quality Checker

Diagnose low bitrate, stutter, and stream quality drops.

Troubleshooting
TS

Audio Sync Helper

Fix audio/video sync drift and delayed playback issues.

Troubleshooting
TS

Video Playback Helper

Troubleshoot black screen, freeze, and playback interruptions.

Troubleshooting
TS

Meeting Connection Helper

Fix join failures and unstable conference sessions.

Troubleshooting
TS

Screen Share Helper

Resolve screen-share permission and rendering failures.

Troubleshooting
TS

Bluetooth Audio Helper

Troubleshoot Bluetooth audio dropouts and pairing errors.

Troubleshooting
TS

Location Permission Helper

Fix map and location feature failures across devices.

Troubleshooting
TS

Camera Permission Helper

Check camera access and permission blockers.

Troubleshooting
TS

Microphone Permission Helper

Check mic access and input capture failures.

Troubleshooting
TS

Notification Delay Helper

Diagnose delayed push notifications and background limits.

Troubleshooting
TS

Background Sync Helper

Fix background sync interruptions and queue delays.

Troubleshooting
TS

Data Sync Conflict Helper

Resolve sync conflicts and duplicate data states.

Troubleshooting
TS

Backup Restore Helper

Troubleshoot restore failures and incomplete backups.

Troubleshooting
TS

File Upload Failure Helper

Fix upload failures caused by size, format, or network issues.

Troubleshooting
TS

Download Failure Helper

Resolve stalled, blocked, or corrupted downloads.

Troubleshooting
TS

Cache Corruption Helper

Detect cache corruption patterns and recover clean state.

Troubleshooting
TS

Cookie Session Helper

Fix login loops and broken sessions from cookie issues.

Troubleshooting
TS

Browser Extension Conflict Checker

Find extension conflicts that break app features.

Troubleshooting
TS

Mobile Data Helper

Troubleshoot app failures specific to cellular data.

Troubleshooting
TS

Roaming Connectivity Helper

Debug roaming network restrictions and app failures.

Troubleshooting
TS

Device Time Sync Helper

Fix security/login failures caused by incorrect device time.

Troubleshooting
TS

Storage Cleanup Helper

Recover app stability by reducing storage pressure safely.

Troubleshooting
TS

Battery Saver Conflict Helper

Identify power-saver settings blocking app behavior.

Troubleshooting
TS

App Compatibility Helper

Check compatibility issues between app version and OS/browser.

Troubleshooting

SEO Magnet Utility Tools

%

Percentage Calculator

Calculate percentages, percentage increase, and decrease quickly.

Daily
Off

Discount Calculator

Compute discount amount and final price instantly.

Shopping
Tax

Tax Calculator

Estimate tax amount and total payable for purchases.

Finance
GST

GST Calculator

Calculate GST-inclusive and GST-exclusive totals.

Finance
PM

Profit Margin Calculator

Find profit margin, markup, and break-even values.

Business
Int

Loan Interest Calculator

Calculate simple and compound loan interest quickly.

Finance
SIP

SIP Calculator

Estimate SIP investment growth with monthly contributions.

Finance
CI

Compound Interest Calculator

Compute compound growth over time with frequency controls.

Finance
AgeD

Age In Days Calculator

Calculate exact age in total days and weeks.

Daily
Date

Date Difference Calculator

Find difference between two dates in days, months, and years.

Time
Tmr

Countdown Timer Online

Set quick countdown timers in browser.

Productivity
Pomo

Pomodoro Timer

Focus timer with work and break intervals.

Productivity
TZ+

Timezone Meeting Planner

Plan meetings across global time zones.

Time
Unix

Unix Timestamp Converter

Convert unix timestamps to human-readable dates and back.

Developer
J2C

JSON to CSV Converter

Convert JSON arrays into downloadable CSV data.

Developer
C2J

CSV to JSON Converter

Convert CSV rows to JSON objects instantly.

Developer
MD

Markdown To HTML Converter

Convert markdown text into clean HTML output.

Developer
H2M

HTML To Markdown Converter

Transform HTML snippets into markdown format.

Developer
URL

URL Encoder Decoder

Encode or decode URL strings for safe sharing.

Developer
Ent

HTML Entity Encoder Decoder

Encode and decode special HTML entities.

Developer
JWT

JWT Decoder

Decode JWT headers and payload safely in-browser.

Developer
Hash

Hash Generator

Generate MD5, SHA-1, SHA-256 hashes from text.

Security
Pwd

Password Strength Checker

Check password strength and entropy indicators.

Security
Lorem

Lorem Ipsum Generator

Generate placeholder paragraphs for design and content drafts.

Writing
Slug

Slug Generator

Create SEO-friendly URL slugs from titles and phrases.

SEO
Meta

Meta Tag Generator

Generate SEO meta title, description, and social tags quickly.

SEO
Robot

Robots.txt Generator

Build custom robots.txt entries for crawler control.

SEO
Map

Sitemap URL List Cleaner

Clean and normalize URL lists before sitemap submission.

SEO
Diff

Text Diff Checker

Compare two text blocks and highlight differences.

Writing
Dup

Duplicate Line Remover

Remove duplicate lines from long text lists.

Writing
Sort

Line Sorter

Sort text lines alphabetically or reverse order.

Writing
WS

Whitespace Cleaner

Trim extra spaces, tabs, and blank lines.

Writing
N2W

Number To Words Converter

Convert numbers into words for invoices and docs.

Daily
List

Random Password List Generator

Generate batch random passwords for testing.

Security
Clr

Color Code Converter

Convert HEX, RGB, and HSL color values.

Design
Grad

Gradient Generator

Create CSS linear gradient code with live preview values.

Design
CSS

CSS Minifier

Minify CSS code for faster page loads.

Developer
JS

JS Minifier

Minify JavaScript quickly in browser.

Developer
HTML

HTML Minifier

Compress HTML markup for performance.

Developer
Freq

Word Frequency Counter

Count top repeated words in text content.

Writing

Need help with an app issue?

Browse our 100+ free troubleshooting guides for popular apps and services.

View All Guides