fast · free · no signup

Free online tools for
developers & everyday use

A growing collection of fast, privacy-first utilities — PDF tools, developer helpers, network diagnostics, finance calculators and more. No signup, no install.

26Tools

6Categories

0No signup

∞Free uses

100% free forever

No signup required

Files stay in your browser

Works on all devices

PDF Utilities2 tools

PDF Password Remover

Remove password from PDFs when you know the password.

PDF utilitiesOpen tool

PDF Merge & Split

Combine multiple PDFs into one, or extract a specific page range.

PDF utilitiesOpen tool

Developer Tools12 tools

JSON Formatter & Validator

Format, validate, and beautify JSON. Spot errors instantly with syntax highlighting.

Dev & OpsOpen tool

Base64 / URL Encoder & Decoder

Encode/decode Base64, URLs, and view JWT payloads.

Dev & OpsOpen tool

Cron Expression Builder

Build and explain cron expressions visually with a human-readable preview.

Dev & OpsOpen tool

Diff Checker (Text Compare)

Compare two text snippets side-by-side and highlight the differences.

Dev & OpsOpen tool

YAML ↔ JSON Converter

Convert YAML to JSON and JSON back to YAML instantly.

Dev & OpsOpen tool

Query WHOIS records for domains and IPs, with a clean summary.

Dev & OpsOpen tool

SSL Certificate Checker

Inspect a site's SSL/TLS certificate, expiry, and cipher details.

Dev & OpsOpen tool

Regex Tester / Extractor

Test your regular expressions with real-time matching and extraction.

Dev & OpsOpen tool

Image to Base64 Converter

Convert images to Base64 strings for HTML, CSS, and APIs.

Dev & OpsOpen tool

HTTP Header Checker

Check HTTP headers for any URL and inspect response details.

Dev & OpsOpen tool

Hash & HMAC Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text.

Dev & OpsOpen tool

Subnet Calculator

Calculate IPv4 subnets, masks, and host ranges.

Dev & OpsOpen tool

Network & Security3 tools

Scan a host for open TCP ports (local / internal usage only).

NetworkOpen tool

Public IP & Geo Lookup

See your public IP, approximate geographic location, and ISP details.

NetworkOpen tool

Password Generator

Generate cryptographically secure passwords with a visual strength meter.

NetworkOpen tool

Finance & Planning4 tools

Investment Planner

Visualize investment growth with a compound interest calculator and chart.

FinanceOpen tool

Loan Repayment Planner

Calculate monthly payments, total interest, and amortization schedule for any loan.

FinanceOpen tool

Live LONG/SHORT crypto trading signals across multiple timeframes.

FinanceOpen tool

Indian Stock Market Analysis

Real-time NSE prices, NIFTY/SENSEX overview, and technical signal scores for top Nifty 50 stocks.

FinanceOpen tool

Files & Media2 tools

Image Resizer & Compressor

Resize and compress images with a live before/after preview and size savings readout.

Files & MediaOpen tool

Excel ↔ CSV Converter

Convert Excel files to CSV, or CSV files to .xlsx in a single click.

Files & MediaOpen tool

General Utilities3 tools

QR Code Generator

Generate downloadable QR codes for URLs, Wi-Fi credentials, and plain text.

UtilitiesOpen tool

Convert length, area, mass, volume, speed, temperature, and digital storage units.

UtilitiesOpen tool

Kundli Generator

Free Vedic birth chart with North/South Indian style, Navamsa, Dasha timeline, yogas, life predictions, and yearly forecast.

UtilitiesOpen tool

Guides & Tutorials

In-depth how-to articles for every tool

View all articles →

PDF Tools5 min read

How to Remove a Password from a PDF — Step-by-Step Guide

PDF Tools5 min read

How to Merge and Split PDF Files Online — Free Guide

Developer Tools7 min read

What is Base64 Encoding? Complete Guide with Examples

Developer Tools6 min read

JSON Formatting Guide — How to Read, Write, and Validate JSON

Developer Tools8 min read

Understanding Cron Expressions — Complete Guide with Examples

Developer Tools4 min read

How to Compare Two Text Files or Code Snippets Online