How to Use Image Compressor: Complete Guide & Examples
Image Compressor processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then preview the f…
NBOUND KNOWLEDGE BASE
Practical guides for every NBOUND tool
Learn the workflow, formulas, examples, checks and limitations behind each calculator, file utility, developer tool, QR workflow, creator utility and business tool.
Image Tools guides
Compress Image to 20KB: Photo & Signature Guide
A 20KB limit is extremely small. Confirm the destination portal’s file-size, format and pixel rules, compress to the target, then inspect faces, signature…
How to Use Compress Image to 50KB: Complete Guide & Examples
Compress Image to 50KB processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then preview…
How to Use Compress Image to 100KB: Complete Guide & Examples
Compress Image to 100KB processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then previe…
How to Use Compress Image to 200KB: Complete Guide & Examples
Compress Image to 200KB processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then previe…
How to Use Compress Image to 500KB: Complete Guide & Examples
Compress Image to 500KB processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then previe…
How to Use Compress Image to 1MB: Complete Guide & Examples
Compress Image to 1MB processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then preview…
How to Use Image Resizer: Complete Guide & Examples
Image Resizer processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then preview the fina…
How to Use JPG to PNG Converter: Complete Guide & Examples
JPG to PNG Converter processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then preview t…
How to Use PNG to JPG Converter: Complete Guide & Examples
PNG to JPG Converter processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then preview t…
How to Use JPG to WebP Converter: Complete Guide & Examples
JPG to WebP Converter processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then preview…
How to Use PNG to WebP Converter: Complete Guide & Examples
PNG to WebP Converter processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then preview…
How to Use WebP to JPG Converter: Complete Guide & Examples
WebP to JPG Converter processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then preview…
How to Use WebP to PNG Converter: Complete Guide & Examples
WebP to PNG Converter processes supported images in the browser. Confirm the destination format, dimensions and file-size requirement first, then preview…
Calculators guides
How to Use Percentage Calculator: Complete Guide & Examples
Percentage Calculator applies a documented calculation in the browser. Confirm the units and inputs, review the formula, and compare at least one alternat…
How to Use Age Calculator: Complete Guide & Examples
Age Calculator applies a documented calculation in the browser. Confirm the units and inputs, review the formula, and compare at least one alternative sce…
EMI Calculator Guide: Formula, Interest & Loan Comparison
An EMI estimate converts principal, annual interest rate and tenure into a monthly payment using a reducing-balance formula. Compare EMI and total interes…
GST Calculator Guide: Inclusive vs Exclusive GST with Examples
For a GST-exclusive amount, tax = base × rate and total = base + tax. For a GST-inclusive amount, base = inclusive price ÷ (1 + rate), then GST = inclusiv…
How to Use CGPA Calculator: Complete Guide & Examples
CGPA Calculator applies a documented calculation in the browser. Confirm the units and inputs, review the formula, and compare at least one alternative sc…
How to Use Attendance Calculator: Complete Guide & Examples
Attendance Calculator applies a documented calculation in the browser. Confirm the units and inputs, review the formula, and compare at least one alternat…
Developer Tools guides
How to Use JSON Formatter & Validator: Complete Guide & Examples
JSON Formatter & Validator is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assum…
How to Use JSON Validator: Complete Guide & Examples
JSON Validator is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumptions befor…
How to Use JSON Minifier: Complete Guide & Examples
JSON Minifier is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumptions before…
How to Use XML Formatter & Minifier: Complete Guide & Examples
XML Formatter & Minifier is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumpt…
How to Use XML Validator: Complete Guide & Examples
XML Validator is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumptions before…
How to Use XML Minifier: Complete Guide & Examples
XML Minifier is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumptions before…
How to Use XML to JSON Converter: Complete Guide & Examples
XML to JSON Converter is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumption…
How to Use JSON to XML Converter: Complete Guide & Examples
JSON to XML Converter is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumption…
How to Use Base64 Encoder: Complete Guide & Examples
Base64 Encoder is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumptions befor…
How to Use Base64 Decoder: Complete Guide & Examples
Base64 Decoder is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumptions befor…
How to Use JWT Decoder: Complete Guide & Examples
JWT Decoder is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumptions before u…
How to Use UUID Generator: Complete Guide & Examples
UUID Generator is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumptions befor…
How to Use Unix Timestamp Converter: Complete Guide & Examples
Unix Timestamp Converter is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security assumpt…
How to Use Case Converter & Word Counter: Complete Guide & Examples
Case Converter & Word Counter is a browser-side developer utility for inspecting or transforming data quickly. Review validation, encoding and security as…
QR Tools guides
How to Use QR Code Generator: Complete Guide & Examples
QR Code Generator handles QR data in the browser. Test generated codes at the real output size, and inspect scanned destinations before following unfamili…
Online QR Scanner Guide: Camera, Image Upload & Safe Scanning
Use camera mode for a physical QR code and image upload for screenshots or saved images. After decoding, inspect the text or hostname before opening unfam…
PDF Tools guides
How to Use JPG to PDF Converter: Complete Guide & Examples
JPG to PDF Converter processes supported PDF workflows in the browser. Keep the original file, verify page order or ranges, and open the exported PDF once…
How to Use Merge PDF: Complete Guide & Examples
Merge PDF processes supported PDF workflows in the browser. Keep the original file, verify page order or ranges, and open the exported PDF once before sha…
How to Use Split PDF: Complete Guide & Examples
Split PDF processes supported PDF workflows in the browser. Keep the original file, verify page order or ranges, and open the exported PDF once before sha…
Business Tools guides
Free Invoice Generator Guide: Create, Check & Export Invoices
Enter seller and customer details, add line items, discounts or taxes, review the final total and export the invoice. Keep your own copy because a documen…
Profit Margin Calculator Guide: Margin vs Markup, Formula & Examples
Profit margin measures profit as a percentage of selling price, while markup measures profit as a percentage of cost. Enter cost and selling price to see…
How to Use Payment Receipt Generator: Complete Guide & Examples
Payment Receipt Generator helps with a common business calculation or document in the browser. Verify commercial inputs, check totals, and keep the result…
Creator Tools guides
Aspect Ratio Calculator Guide: 16:9, 9:16, 4:5 & Pixel Sizes
Aspect ratio describes shape, not resolution. 1920×1080 and 1280×720 are both 16:9. Enter a known width or height and keep the ratio locked to solve the m…
How to Use Social Media Image Resizer: Complete Guide & Examples
Social Media Image Resizer helps prepare creator assets in the browser. Start from the destination platform requirement, preserve proportions unless cropp…
How to Use Hashtag & Caption Formatter: Complete Guide & Examples
Hashtag & Caption Formatter helps prepare creator assets in the browser. Start from the destination platform requirement, preserve proportions unless crop…
How to Use Caption Formatter: Complete Guide & Examples
Caption Formatter helps prepare creator assets in the browser. Start from the destination platform requirement, preserve proportions unless cropping is in…