GUIDES
Practical help for digital tasks
Clear explanations that help you choose formats, protect privacy and get better results from the tools.Image guides
View tools →How to Reduce Image File Size Without Ruining Quality
A practical guide to making JPG, PNG and WebP images smaller while keeping them sharp enough for websites, email and sharing.
Read guide →JPG vs PNG vs WebP: Which Image Format Should You Use?
Understand the practical differences between JPG, PNG and WebP and choose the right format for photos, graphics and websites.
Read guide →How to Convert HEIC to JPG Without Uploading Your Photos
Convert iPhone HEIC photos to JPG locally in your browser and understand when JPG is the better choice for compatibility.
Read guide →Pdf guides
View tools →How to Combine Multiple PDF Files Into One Document
Learn how PDF merging works, how to order pages correctly and how to combine documents locally in your browser.
Read guide →How to Split a PDF and Extract Only the Pages You Need
A simple guide to extracting page ranges from PDF documents while keeping the original file intact.
Read guide →Developer guides
View tools →JSON vs CSV: Differences, Use Cases and Conversion Tips
Compare JSON and CSV, understand where each format works best, and avoid common problems when converting structured data.
Read guide →How to Format and Validate JSON Quickly
Learn how to spot invalid JSON, format compact data for reading and minify JSON again for transport or storage.
Read guide →Utility guides
View tools →QR Codes Explained: What to Encode and How to Make Them Reliable
Create useful QR codes for links and text while avoiding common scanning and printing problems.
Read guide →Percentage Calculations Explained With Simple Examples
Understand percentage-of, percentage-change and reverse percentage calculations with straightforward formulas and examples.
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