Help Articles

Guides, tips and recommendations for our tools

21 articles
New to URL Encoding/Decoding? This Guide Has You CoveredLatest

New to URL Encoding/Decoding? This Guide Has You Covered

This tutorial will guide you step-by-step on how to use a URL Encoding/Decoding tool to solve issues with links containing special characters like Chinese text or spaces. Follow along, and you'll be able to safely share or process various links yourself.

10/27/2026
Online Mind Mapping and PPT Downgrade: A Beginner's Guide

Online Mind Mapping and PPT Downgrade: A Beginner's Guide

This tutorial teaches you how to use online mind mapping for brainstorming and how to convert high-version PPTs to lower versions. No software installation needed, just use your browser. Detailed steps ensure success even for beginners.

10/27/2026 2
How to Choose Between a "Ratio Calculator" and a "Volume Calculator"? A Clear Explanation in One Article

How to Choose Between a "Ratio Calculator" and a "Volume Calculator"? A Clear Explanation in One Article

Many people make mistakes when manually calculating ratios or volumes, such as confusing units or forgetting formulas. This article compares two online tools, the "Ratio Calculator" and the "Volume Calculator," to help you understand what each is good at, how to use them, and how to make the right choice for different scenarios.

10/26/2026 20
230-Stroke Order Query: Why Can't I See the Stroke Order Animation Clearly? It's Probably the Input Method

230-Stroke Order Query: Why Can't I See the Stroke Order Animation Clearly? It's Probably the Input Method

After inputting a Chinese character, the stroke order animation stutters or displays incompletely, making it impossible to see the writing order of each stroke? This article tells you directly where the problem lies and the correct operational steps, allowing you to use the "230-Stroke Order Query" tool efficiently.

10/26/2026 22

How to Choose Between "Trace Paper" and "Username Generator": A Clear Guide

Still struggling with printing practice sheets or coming up with online usernames? This article compares two efTool online tools: Trace Paper (focused on practice sheet generation) and Username/Nickname Generator (focused on creative naming). The conclusion: Use Trace Paper for calligraphy practice and beginners, and Username Generator for gaming or social media accounts. We'll then compare their operational logic, detail the steps for using Trace Paper, and explain the use cases for Username Generator to help you make a quick choice.

10/26/2026 23

Getting Started with Material Density Lookup: From Opening the Page to Getting Results

Many people rely on search engines or flip through physical manuals to find material density, which is inefficient. This tutorial will show you how to use efTool's Material Density Lookup tool to complete density lookup, unit conversion, and mass/volume calculations in three steps.

10/26/2026 11
Mastering the Details of the "QQ Avatar Fetching Tool"

Mastering the Details of the "QQ Avatar Fetching Tool"

This guide will take you beyond the basic operation of inputting a QQ number to fetch an avatar. You'll learn to use public APIs to obtain high-definition avatars in different sizes, extract QQ Space avatars, and handle batch processing. It also points out common mistakes and introduces how to combine this tool with others on the site to improve efficiency.

10/25/2026 18
Audio Format Converter: A Beginner's Guide from Opening the Page to Getting Results

Audio Format Converter: A Beginner's Guide from Opening the Page to Getting Results

This tutorial will guide you step-by-step through the process of converting audio formats. Whether you want to turn a phone recording into an MP3 or process music files, following along will help you get it done smoothly.

10/25/2026 14
501-MBTI Personality Test Results Inaccurate? You Probably Missed This When Answering

501-MBTI Personality Test Results Inaccurate? You Probably Missed This When Answering

Many people take the MBTI test and feel the results don't quite match their self-perception, or they're confused about the dimensions in the report. Don't worry, this is usually because the core was missed during answering. This tutorial will tell you how to answer correctly and how to interpret the results, so you can truly benefit from it.

10/25/2026 28
How to Choose Between a "Text Comparison Tool" and a "Text Statistics Tool"? A Clear Explanation in One Article

How to Choose Between a "Text Comparison Tool" and a "Text Statistics Tool"? A Clear Explanation in One Article

When you need to compare the differences between two pieces of text, or count the characters and words in an article, which tool should you use? This article helps you clarify the distinction between the "Text Comparison Tool" and the "Text Statistics Tool," explaining what each is best at and how to choose the right one for different scenarios.

10/25/2026 26
Password Generator Keeps Failing? I've Stepped in These Setup Traps for You

Password Generator Keeps Failing? I've Stepped in These Setup Traps for You

Passwords generated by a password generator are either rejected by websites or impossible for you to remember? The issue often lies not in the tool itself, but in the custom settings. This article will help you clarify your approach and learn how to set up correctly to generate passwords that are both secure and practical.

10/24/2026 34
Struggling with First Class Constructor Architecture Exam Prep? I Tackled It in 3 Steps Using the "601-First Class Constructor - Architecture" Tool

Struggling with First Class Constructor Architecture Exam Prep? I Tackled It in 3 Steps Using the "601-First Class Constructor - Architecture" Tool

The First Class Constructor Architecture exam involves numerous knowledge points and difficult practical case studies, with low efficiency in practice questions? This article guides you through a real exam prep scenario to show how to use the "601-First Class Constructor - Architecture" tool for efficient preparation and precise score improvement.

10/24/2026 34
First Time Using the HTTP Status Code Checker and HTML Formatter? This Guide Has You Covered</title

First Time Using the HTTP Status Code Checker and HTML Formatter? This Guide Has You Covered</title

When you encounter web error codes or face a mess of HTML code, this tutorial will guide you step by step through using two practical tools on efTool: the HTTP Status Code Checker and HTML Formatter. Master them, and you'll quickly understand the causes of errors and make your code clear and readable.</summary

10/24/2026 26
First Time Using the Japanese Name Generator? This Guide Has You Covered

First Time Using the Japanese Name Generator? This Guide Has You Covered

Do you often need to give Japanese names to characters, story figures, or a project, but aren't familiar with Japanese naming conventions? Don't worry. This tutorial will guide you step-by-step through using the "Japanese Name Generator" to easily create natural and appropriate Japanese names.

10/23/2026 63
Integer Base Converter & Date & Time Converter: A Beginner's Guide from Page Opening to Results

Integer Base Converter & Date & Time Converter: A Beginner's Guide from Page Opening to Results

This tutorial will quickly get you started with the "Integer Base Converter" and "Date & Time Converter," enabling you to easily perform number base conversions and date/time format transformations, avoiding stumbling blocks due to format issues in programming or data processing.

10/23/2026 58
Percentage Calculator Quick Reference: Master Daily Percentage Calculations in 3 Steps

Percentage Calculator Quick Reference: Master Daily Percentage Calculations in 3 Steps

Encountering problems like product discounts, salary increases, or data change ratios? This guide teaches you how to use an online percentage calculator to solve all percentage calculation challenges in under 3 minutes. Simple and intuitive, even beginners can master it easily.

10/23/2026 75
CAD Panel Cutting Optimal Solution: A Beginner's Guide from Page Opening to Result Acquisition

CAD Panel Cutting Optimal Solution: A Beginner's Guide from Page Opening to Result Acquisition

This tutorial will guide you from scratch to use the "CAD Panel Cutting Optimal Solution" online tool. By inputting simple panel parameters, you can get an optimal cutting layout. You don't need any professional software or worry about complex operations. Follow the steps to easily solve problems of material waste and low efficiency.

10/23/2026 61
3 Advanced Uses of "Case Converter" and "String Obfuscator" That Most People Don't Know

3 Advanced Uses of "Case Converter" and "String Obfuscator" That Most People Don't Know

This article provides 3 advanced techniques for the "Case Converter" and "String Obfuscator" tools, helping programmers and office workers handle text naming and code protection more efficiently. It also points out common mistakes and how to correct them.

10/22/2026 73