Every tool, in one searchable list

IPv4 Subnet Calculator

Network, broadcast, host range and binary working for IPv4.

IPv6 Subnet Calculator

IPv6 prefix maths with correct 128-bit address counts.

Public IP Lookup

See your public IP, ISP, ASN and approximate location.

DNS Lookup

Query DNS records over DoH with multiple record types.

MAC Address Lookup

Identify hardware vendors from MAC address prefixes.

SSL Certificate Checker

Check TLS issuer, expiry and covered domains.

HTTP Header Checker

Response headers plus a practical security-header audit.

CIDR Calculator

Test IP membership and summarise multiple CIDR blocks.

IP Address Validator

Validate and classify IPv4 and IPv6 addresses.

MX Lookup

Mail exchanger records with priorities.

SPF Checker

Audit the SPF record that authorises senders.

DMARC Checker

Audit DMARC policy and reporting tags.

DKIM Checker

Read and audit a DKIM selector record.

Reverse DNS Lookup

PTR records with forward-confirmed checks.

DNS Propagation Checker

Compare answers from two independent public resolvers.

HTTP Status Checker

Status codes, redirects and final URL.

JSON Formatter

Beautify or minify JSON, with precise error positions.

JSON Validator

Pinpoint JSON errors by line and column, instantly.

Base64 Encoder

UTF-8-safe Base64 encoding, including URL-safe mode.

Base64 Decoder

Decode standard or URL-safe Base64 back to readable text.

URL Encoder

Percent-encode values or whole URLs, correctly.

URL Decoder

Turn percent-encoded links back into readable text.

JWT Decoder

Read JWT claims and optionally verify HMAC signatures.

Password Generator

Cryptographically secure passwords with entropy scoring.

UUID Generator

Bulk random UUID v4 generation with format options.

Hash Generator

MD5 and SHA digests for text or files, computed locally.

Regex Tester

Live regex matching, groups and replace preview.

Word Counter

Words, characters, sentences, paragraphs and reading time.

Character Counter

Live character count against any limit you choose.

Case Converter

Switch between nine letter cases without retyping.

Duplicate Line Remover

Remove repeated lines while keeping the original order.

Text Reverser

Reverse characters, words or lines safely.

Whitespace Remover

Trim, collapse and remove unwanted whitespace.

Slug Generator

Create readable, lowercase URL slugs.

Lorem Ipsum Generator

Placeholder copy in paragraphs, sentences or words.

Text Diff Checker

Line-by-line differences between two texts.

CSV to JSON

Turn CSV rows into clean JSON objects.

JSON to CSV

Turn JSON arrays into spreadsheet-ready CSV.

HTML to Markdown

Turn HTML into readable Markdown.

Markdown Editor

Write Markdown with a live, sanitised preview.

File Hash Verifier

Check a file against a published checksum.

Password Strength Checker

Estimate password strength without sending it anywhere.

Secure Token Generator

Cryptographically random API keys and secrets.

Meta Tag Analyzer

Audit the head of a page for SEO and sharing tags.

SERP Snippet Preview

Preview how a search result will look.

Canonical URL Checker

Spot canonical mismatches before they split ranking signals.

Hreflang Generator

Create valid hreflang tags for language variants.

robots.txt Generator

Write valid crawl rules without syntax mistakes.

Sitemap Generator

Create a valid XML sitemap from a URL list.

Open Graph Previewer

Preview and generate social sharing tags.

Merge PDF

Combine PDFs in any order, entirely on your device.

Split PDF

Extract page ranges or split a PDF into separate files.

Compress PDF

Shrink PDFs with adjustable DPI and quality.

PDF to JPG

Export PDF pages as JPGs at your chosen resolution.

JPG to PDF

Build a PDF from images with page-size control.

PDF Editor

Click words to replace them, add text and manage pages locally.

Sign PDF

Place a drawn, typed or uploaded signature on a PDF.

Rotate PDF

Rotate all or selected PDF pages.

Watermark PDF

Stamp text across every page of a PDF.

Remove PDF Metadata

Clear identifying metadata before sharing a PDF.

Image Compressor

Shrink JPG, PNG and WebP with a live size comparison.

Image Resizer

Resize to exact pixels or percentage with aspect control.

PNG to JPG

Convert PNG to JPEG with quality control.

JPG to PNG

Convert JPEG photos to PNG for lossless editing.

WebP Converter

Convert WebP ↔ JPG/PNG with quality control.

Image Cropper

Drag-to-crop with ratio presets and exact output.

Passport Photo Maker

Crop to 35×45 mm, 2×2 in and more, then print a 6×4 sheet.

SVG to PNG

Render SVG files to PNG at a chosen size.

PNG to WebP

Encode images as WebP with adjustable quality.

Image to Base64

Turn an image into a copy-ready Base64 string.

CSS Gradient Generator

Build and copy CSS gradients visually.

Percentage Calculator

Percent of a number, percent share and percent change.

Age Calculator

Exact age plus a next-birthday countdown.

GST Calculator

Add or remove GST with the CGST/SGST breakdown.

EMI Calculator

Monthly EMI plus a full amortisation schedule.

SIP Calculator

Project SIP growth from monthly amount and return.

Discount Calculator

Sale price, savings and stacked discounts.

Date Difference Calculator

Days, weeks and weekdays between two dates.

Unix Timestamp Converter

Convert Unix time to dates and back.

Time Zone Converter

Convert meeting times across time zones.

Unit Converter

Convert twelve categories of measurement units.

Data Storage Converter

Convert decimal and binary storage units.

Compound Interest Calculator

Project growth with compounding and contributions.

UTM Builder

Create consistent, analysable campaign links.

QR Code Generator

Create downloadable PNG and SVG QR codes.

Email Signature Generator

Generate an email signature that survives mail clients.

Campaign ROI Calculator

Profit, ROI, ROAS and payback from two numbers.

APA Citation Generator

APA 7 references for books, articles and websites.

MLA Citation Generator

MLA 9 works-cited entries in a consistent format.

Harvard Citation Generator

Harvard author–date references for common sources.

GPA Calculator

Weighted GPA from credits and grades.

PDF Page Numbering

Stamp page numbers with any format and position.

PDF Form Filler

Complete PDF forms locally and download the result.

PDF Comparison

Highlight text differences between two PDFs.

EXIF Viewer

Inspect camera and GPS metadata in a JPEG.

EXIF Location Remover

Strip GPS coordinates from JPEG photos.

Image Metadata Remover

Remove EXIF and comments from a JPEG.

Favicon Generator

Generate PNG favicons and a multi-size ICO.

Social Media Image Resizer

Crop an image to common social media sizes.

Color Picker

Convert colours and check text contrast.

Color Palette Generator

Create harmonious colour palettes from one colour.

Barcode Generator

Create and download barcodes as SVG or PNG.

QR Code with Logo

Branded QR codes with a safe logo area.

Open Graph Image Generator

Make a 1200×630 social share image.

CSV Viewer

Inspect CSV rows, columns and irregular data.

HTML Minifier

Compress HTML without breaking inline code.

CSS Minifier

Compress CSS while keeping values intact.

JS Minifier

Strip JS comments and whitespace conservatively.

User-Agent Parser

Decode browser, OS and bot details from a UA string.

Schema Markup Generator

Build JSON-LD structured data with validation hints.

Keyword Density Checker

Find repeated words and phrases in your copy.

Readability Checker

Score text with Flesch reading metrics.

Sitemap URL Extractor

List every URL in a sitemap XML file.

Email Header Analyzer

Trace email hops and authentication results.

Broken Link Checker

Test a short list of links for broken responses.

IP Blacklist Checker

Check an IP against common DNSBL zones.

TLS Configuration Checker

Check HTTPS redirects and HSTS headers.

ASN Lookup

Find the ASN and owner of an IP address.

IPv4/IPv6 Compatibility

See whether a domain publishes IPv4 and IPv6 records.

Instagram Caption Formatter

Format captions and check the preview cutoff.

Hashtag Generator

Generate a deduplicated hashtag list.

YouTube Thumbnail Previewer

Preview all YouTube thumbnail sizes for a video.

YouTube Tag Generator

Build a tag list that fits YouTube's limit.

YouTube Description Formatter

Build a structured YouTube description.

Social Media Bio Generator

Generate short, medium and long social bios.

Email Subject Line Tester

Check subject length and spammy wording.

Marketing Calendar Generator

Plan posting slots across weeks and channels.

CGPA Calculator

Combine semester GPAs into one CGPA.

Grade Percentage Calculator

Combine weighted marks into a course grade.

Study Timetable Generator

Turn subjects into a weekly study schedule.

Flashcard Generator

Turn a list into interactive study cards.

Pomodoro Timer

Run focus and break cycles in the browser.

Typing Speed Test

Measure typing speed over a timed passage.

Typing Accuracy Test

Check typing precision without a clock.

Scientific Calculator

Evaluate scientific expressions in the browser.

Fraction Calculator

Calculate with fractions and mixed numbers.

World Clock

Compare live times across time zones.

Tip Calculator

Split a bill with a tip.

Hourly to Annual Salary

Turn an hourly rate into yearly gross pay.

Overtime Calculator

Work out pay including overtime hours.

Fuel Cost Calculator

Estimate trip fuel use and cost.

Electricity Cost Calculator

Estimate an appliance's electricity cost.

PII Detector

Find personal data in pasted text.

PDF Metadata Inspector

Inspect hidden metadata in a PDF.

Text Redaction Helper

Replace detected personal data in text.

WHOIS Lookup

Read a domain's registry record over RDAP.

Domain Expiry Checker

Check registry expiry dates and days remaining.

BGP Prefix Lookup

Find the routed prefix and origin ASN for an IP.

Currency Converter

Convert amounts with daily ECB reference rates.

AI Background Remover

Erase a photo background locally with an AI model.

Internet Speed Test

Measure ping, jitter, download and upload speed.