Krishna Tools

JPG to PNG

Convert JPG images to PNG format in your browser.

PNG to JPG

Convert PNG images to compact JPG.

WEBP to JPG

Convert WEBP images to JPG.

JPG to WEBP

Convert JPG to modern WEBP format.

HEIC to JPG

Convert iPhone HEIC photos to JPG.

Image to PDF

Combine images into a single PDF.

PDF to JPG

Convert PDF pages to JPG images.

Image Compressor

Compress images to a target KB size.

Image Resizer

Resize images by px, %, or preset.

Image Cropper

Crop images with aspect ratio presets.

Rotate & Flip

Rotate or flip images.

PRO

Bulk Image Converter

Convert many images at once, download as ZIP.

Passport Photo Maker

Make 35×45mm passport photos + 4×6 sheet.

Signature Cleaner

Remove white background from signatures, 20KB output.

Photo to 20/50/100 KB

Resize photos to exact KB for exam forms.

Watermark Adder

Add text or logo watermark to images.

Image ↔ Base64

Convert images to Base64 and back.

Favicon Generator

Generate all-size favicons, ZIP download.

Color Picker from Image

Pick colors (HEX/RGB) from an image.

EXIF Viewer & Remover

View and remove EXIF metadata.

Meme Generator

Create memes with top/bottom text.

Image DPI Changer

Change DPI (72→300) for printing.

Merge PDF

Merge multiple PDFs into one.

Split PDF

Split a PDF into separate pages.

Compress PDF

Reduce PDF file size.

PRO

PDF to Word

Convert PDF to editable Word.

Word to PDF

Convert Word documents to PDF.

PRO

PDF to Excel

Extract PDF tables to Excel.

Excel to PDF

Convert Excel sheets to PDF.

PRO

PDF to PPT

Convert PDF to presentation.

PPT to PDF

Convert presentations to PDF.

PDF to Text

Extract text from PDF.

Rotate PDF

Rotate PDF pages.

Delete Pages

Delete pages from PDF.

Reorder Pages

Reorder PDF pages.

Extract Pages

Extract specific pages to a new PDF.

Password Protect

Add a password to a PDF.

Password Remove

Unlock PDF with a known password.

Page Numbers

Add page numbers to a PDF.

PDF Watermark

Add a text watermark to a PDF.

PDF Metadata Editor

Edit PDF title/author metadata.

eSign PDF

Draw or upload a signature on a PDF.

Excel to CSV

Convert Excel sheets to CSV.

CSV to Excel

Convert CSV to Excel.

JSON to Excel

Convert JSON array to Excel table.

Excel to JSON

Convert Excel to JSON.

JSON Formatter

Beautify or minify JSON.

XML ↔ JSON

Convert between XML and JSON.

CSV Merger

Merge multiple CSV files.

Word Counter

Count words, characters, sentences.

Case Converter

Change text case (UPPER/lower/Title).

Find & Replace

Find and replace text.

Duplicate Line Remover

Remove duplicate lines.

Text Diff Checker

Compare two texts.

Markdown to HTML

Convert Markdown to HTML.

HTML to Text

Strip HTML tags to plain text.

CCTV Storage Calculator

Calculate HDD size from cameras, resolution, retention.

Reverse Storage Calculator

From HDD size, find days of recording.

CCTV Bandwidth Calculator

Mbps upload needed for remote viewing.

Lens / Focal Length Calculator

Find mm lens & FOV from distance.

Camera Coverage / FOV Visualizer

Draw camera coverage on a floor plan.

IP / Subnet Calculator

CIDR, usable IPs, broadcast.

IP Range Planner for NVR

Auto-assign static IPs for N cameras.

PoE Power Budget Calculator

Switch watts vs camera watts, headroom %.

Cable Length / Voltage Drop

Cat6/RG59 max distance, 12V drop.

DVR/NVR Channel Planner

Hybrid recommendation for analog + IP mix.

PPM / Pixel Density Calculator

Detect/recognize/identify distance.

PRO

CCTV Quotation Generator

Build a GST PDF quote on AK Computer letterhead.

PRO

CCTV AMC Contract Generator

Generate a yearly AMC contract PDF.

Default Password / Port Reference

Default ports for major CCTV brands.

Camera Time Sync Helper

NTP list, IST offset, epoch↔date, drift calc.

CCTV Site Survey Form Generator

Printable site survey checklist PDF.

Data Storage Converter

Convert bit/Byte/KB/MB/GB/TB (1000 & 1024).

RAM Configuration Calculator

Slots, DDR, dual-channel check.

HDD/SSD Real Capacity

Why 1TB = 931GB usable.

Partition Planner

Suggest C/D/E partition split.

File Transfer Time Calculator

File size ÷ speed = time.

Backup Size Estimator

Estimate backup storage needs.

PSU Wattage Calculator

Recommended SMPS watts from components.

PC Build Cost Estimator

Parts list + margin % + GST.

UPS Backup Time Calculator

Minutes from VA, load, battery Ah.

Screen Size / PPI Calculator

Screen size / resolution / PPI.

Aspect Ratio Calculator

Aspect ratio and new dimensions.

Printer Page Cost Calculator

Cartridge price ÷ yield = cost per page.

Toner/Ink Yield Estimator

Cartridges per year from monthly pages.

Download Time Calculator

Download time from internet speed.

Video File Size Estimator

Bitrate × duration = file size.

Mbps ↔ MB/s Converter

Convert Mbps and MB/s.

Barcode Generator

Code128/EAN13 barcodes for inventory.

Service Job Sheet Generator

Repair token PDF + WhatsApp to customer.

GST Calculator

Inclusive/exclusive, CGST-SGST-IGST split.

PRO

Invoice Generator

GST tax invoice PDF with HSN & logo.

Quotation Generator

Generate a general quotation PDF.

EMI Calculator

Loan EMI + amortization table.

Profit Margin / Markup

Cost → MRP at target margin %.

Discount Calculator

Price after discount.

Currency Converter

Live rate + manual fallback.

Warranty Expiry Tracker

Purchase + months = expiry + days left.

AMC Renewal Date Calculator

Renewal date from AMC start.

Salary/Payroll Calculator

Basic, HRA, PF, ESI breakdown.

Purchase Order Generator

Generate a purchase order PDF.

Inventory Valuation Calculator

Calculate total stock value.

Total Days Calculator

Days/weeks/working days between dates.

Age Calculator

Age in Y/M/D + next birthday.

Date Add/Subtract

Add or subtract days/months from a date.

Working Days Calculator

Working days excluding holidays.

Timestamp/Epoch Converter

Convert Unix timestamp and date.

Time Zone Converter

Compare time zones with IST.

Countdown Timer / Stopwatch

Countdown and stopwatch.

Unit Converter

Length/weight/temp/area/volume.

Percentage Calculator

All percentage calculations.

Scientific Calculator

Scientific calc with trig, log, powers.

QR Code Generator

URL/WiFi/vCard/UPI QR with center logo.

QR Code Scanner

Scan QR via camera or image.

Password Generator

Strong password + strength meter.

Hash Generator

Generate MD5/SHA1/SHA256 hashes.

Base64 Encoder/Decoder

Encode/decode Base64 text.

URL Encoder/Decoder

Encode/decode URLs.

Lorem Ipsum Generator

Dummy text (English + Gujarati).

WiFi QR Card Generator

Printable WiFi QR card.

API / REST Client

Send GET/POST/PUT/DELETE requests to any REST API and inspect the response.

Webhook Tester

Get a unique URL and inspect incoming webhook requests live.

JWT Decoder & Verifier

Decode JWT header/payload and verify the HS256 signature.

JWT Generator

Create an HS256 JWT from a payload and secret.

Regex Tester

Test regular expressions live with match highlighting.

Cron Expression Parser

Explain a cron expression and show next run times.

UUID / ULID Generator

Generate UUID v4 and ULID in bulk.

JSON ↔ YAML Converter

Convert between JSON and YAML.

JSON to TypeScript

Generate TypeScript interfaces from JSON.

SQL Formatter

Beautify and format SQL queries.

HTTP Status Codes

Look up the meaning of any HTTP status code.

MIME Type Lookup

Find the MIME type for any file extension.

User Agent Parser

Parse browser, OS and device from a User-Agent string.

What Is My IP

See your public IP address and request headers.

DNS Lookup

Look up A, MX, TXT, NS and CNAME records for a domain.

HTML Minifier

Minify HTML to reduce size.

CSS Minifier

Minify CSS code.

JavaScript Minifier

Minify JavaScript code.

Code Beautifier

Beautify HTML, CSS and JS code.

Slug Generator

Convert text into a URL-friendly slug.

String Escaper

Escape strings for JSON, JS, SQL or HTML.

Chmod Calculator

Calculate Linux file permissions (755, 644).

Color Converter

Convert colors between HEX, RGB and HSL.

Number Base Converter

Convert binary, octal, decimal and hex.

Meta Tag Generator

Generate SEO title, description and OG meta tags.

Robots.txt Generator

Build a robots.txt file easily.

.htaccess Redirect Generator

Generate 301/302 redirect rules.

Text to Binary/ASCII

Convert text to binary, ASCII or hex.